feat: manage workers via webui

README.md

@@ -13,10 +13,7 @@ You can put these in `.env` file or pass them as environment variables.
 
 - `TG_BOT_TOKEN` - Telegram bot token. Get yours from [@BotFather](https://t.me/BotFather).
   Required.
-- `SD_API_URL` - URL to Stable Diffusion API. Only used on first run. Default:
-  `http://127.0.0.1:7860/`
 - `TG_ADMIN_USERNAMES` - Comma separated list of usernames of users that can use admin commands.
-  Only used on first run. Optional.
 
 ## Running
 

api/paramsRoute.ts

@@ -30,18 +30,15 @@ export const paramsRoute = createMethodFilter({
         return { status: 401, body: { type: "text/plain", data: "Must be logged in" } };
       }
       const chat = await bot.api.getChat(session.userId);
-      if (chat.type !== "private") {
+      if (chat.type !== "private") throw new Error("Chat is not private");
-        throw new Error("Chat is not private");
+      if (!chat.username) {
-      }
-      const userName = chat.username;
-      if (!userName) {
         return { status: 403, body: { type: "text/plain", data: "Must have a username" } };
       }
       const config = await getConfig();
-      if (!config?.adminUsernames?.includes(userName)) {
+      if (!config?.adminUsernames?.includes(chat.username)) {
         return { status: 403, body: { type: "text/plain", data: "Must be an admin" } };
       }
-      logger().info(`User ${userName} updated default params: ${JSON.stringify(body.data)}`);
+      logger().info(`User ${chat.username} updated default params: ${JSON.stringify(body.data)}`);
       const defaultParams = deepMerge(config.defaultParams ?? {}, body.data);
       await setConfig({ defaultParams });
       return { status: 200, body: { type: "application/json", data: config.defaultParams } };

api/statsRoute.ts

@@ -1,25 +1,54 @@
-// deno-lint-ignore-file require-await
 import { createEndpoint, createMethodFilter, createPathFilter } from "t_rest/server";
-import { liveGlobalStats } from "../app/globalStatsStore.ts";
+import { globalStats } from "../app/globalStats.ts";
 import { getDailyStats } from "../app/dailyStatsStore.ts";
 import { getUserStats } from "../app/userStatsStore.ts";
 import { getUserDailyStats } from "../app/userDailyStatsStore.ts";
+import { generationStore } from "../app/generationStore.ts";
+import { subMinutes } from "date-fns";
+
+const STATS_INTERVAL_MIN = 3;
 
 export const statsRoute = createPathFilter({
   "": createMethodFilter({
     GET: createEndpoint(
       { query: null, body: null },
       async () => {
-        const stats = liveGlobalStats;
+        const after = subMinutes(new Date(), STATS_INTERVAL_MIN);
+        const generations = await generationStore.getAll({ after });
+
+        const imagesPerMinute = generations.length / STATS_INTERVAL_MIN;
+
+        const stepsPerMinute = generations
+          .map((generation) => generation.value.info?.steps ?? 0)
+          .reduce((sum, steps) => sum + steps, 0) / STATS_INTERVAL_MIN;
+
+        const pixelsPerMinute = generations
+          .map((generation) =>
+            (generation.value.info?.width ?? 0) * (generation.value.info?.height ?? 0)
+          )
+          .reduce((sum, pixels) => sum + pixels, 0) / STATS_INTERVAL_MIN;
+
+        const pixelStepsPerMinute = generations
+          .map((generation) =>
+            (generation.value.info?.width ?? 0) * (generation.value.info?.height ?? 0) *
+            (generation.value.info?.steps ?? 0)
+          )
+          .reduce((sum, pixelSteps) => sum + pixelSteps, 0) / STATS_INTERVAL_MIN;
+
         return {
           status: 200,
           body: {
             type: "application/json",
             data: {
-              imageCount: stats.imageCount,
+              imageCount: globalStats.imageCount,
-              pixelCount: stats.pixelCount,
+              stepCount: globalStats.stepCount,
-              userCount: stats.userIds.length,
+              pixelCount: globalStats.pixelCount,
-              timestamp: stats.timestamp,
+              pixelStepCount: globalStats.pixelStepCount,
+              userCount: globalStats.userIds.length,
+              imagesPerMinute,
+              stepsPerMinute,
+              pixelsPerMinute,
+              pixelStepsPerMinute,
             },
           },
         };

api/usersRoute.ts

@@ -3,26 +3,6 @@ import { getConfig } from "../app/config.ts";
 import { bot } from "../bot/mod.ts";
 
 export const usersRoute = createPathFilter({
-  "{userId}": createMethodFilter({
-    GET: createEndpoint(
-      { query: null, body: null },
-      async ({ params }) => {
-        const chat = await bot.api.getChat(params.userId);
-        if (chat.type !== "private") {
-          throw new Error("Chat is not private");
-        }
-        const config = await getConfig();
-        const isAdmin = chat.username && config?.adminUsernames?.includes(chat.username);
-        return {
-          status: 200,
-          body: {
-            type: "application/json",
-            data: { ...chat, isAdmin },
-          },
-        };
-      },
-    ),
-  }),
   "{userId}/photo": createMethodFilter({
     GET: createEndpoint(
       { query: null, body: null },
@@ -51,4 +31,25 @@ export const usersRoute = createPathFilter({
       },
     ),
   }),
+
+  "{userId}": createMethodFilter({
+    GET: createEndpoint(
+      { query: null, body: null },
+      async ({ params }) => {
+        const chat = await bot.api.getChat(params.userId);
+        if (chat.type !== "private") {
+          throw new Error("Chat is not private");
+        }
+        const config = await getConfig();
+        const isAdmin = chat.username && config?.adminUsernames?.includes(chat.username);
+        return {
+          status: 200,
+          body: {
+            type: "application/json",
+            data: { ...chat, isAdmin },
+          },
+        };
+      },
+    ),
+  }),
 });

api/workersRoute.ts

@@ -3,47 +3,261 @@ import { activeGenerationWorkers } from "../app/generationQueue.ts";
 import { getConfig } from "../app/config.ts";
 import * as SdApi from "../app/sdApi.ts";
 import createOpenApiFetch from "openapi_fetch";
+import { sessions } from "./sessionsRoute.ts";
+import { bot } from "../bot/mod.ts";
+import { getLogger } from "std/log/mod.ts";
+import { WorkerInstance, workerInstanceStore } from "../app/workerInstanceStore.ts";
+import { getAuthHeader } from "../utils/getAuthHeader.ts";
+import { Model } from "indexed_kv";
+import { generationStore } from "../app/generationStore.ts";
+import { subMinutes } from "date-fns";
+
+const logger = () => getLogger();
+
+export type WorkerData = Omit<WorkerInstance, "sdUrl" | "sdAuth"> & {
+  id: string;
+  isActive: boolean;
+  imagesPerMinute: number;
+  stepsPerMinute: number;
+  pixelsPerMinute: number;
+  pixelStepsPerMinute: number;
+};
+
+const STATS_INTERVAL_MIN = 10;
+
+async function getWorkerData(workerInstance: Model<WorkerInstance>): Promise<WorkerData> {
+  const after = subMinutes(new Date(), STATS_INTERVAL_MIN);
+
+  const generations = await generationStore.getBy("workerInstanceKey", {
+    value: workerInstance.value.key,
+    after: after,
+  });
+
+  const imagesPerMinute = generations.length / STATS_INTERVAL_MIN;
+
+  const stepsPerMinute = generations
+    .map((generation) => generation.value.info?.steps ?? 0)
+    .reduce((sum, steps) => sum + steps, 0) / STATS_INTERVAL_MIN;
+
+  const pixelsPerMinute = generations
+    .map((generation) => (generation.value.info?.width ?? 0) * (generation.value.info?.height ?? 0))
+    .reduce((sum, pixels) => sum + pixels, 0) / STATS_INTERVAL_MIN;
+
+  const pixelStepsPerMinute = generations
+    .map((generation) =>
+      (generation.value.info?.width ?? 0) * (generation.value.info?.height ?? 0) *
+      (generation.value.info?.steps ?? 0)
+    )
+    .reduce((sum, pixelSteps) => sum + pixelSteps, 0) / STATS_INTERVAL_MIN;
+
+  return {
+    id: workerInstance.id,
+    key: workerInstance.value.key,
+    name: workerInstance.value.name,
+    lastError: workerInstance.value.lastError,
+    lastOnlineTime: workerInstance.value.lastOnlineTime,
+    isActive: activeGenerationWorkers.get(workerInstance.id)?.isProcessing ?? false,
+    imagesPerMinute,
+    stepsPerMinute,
+    pixelsPerMinute,
+    pixelStepsPerMinute,
+  };
+}
 
 export const workersRoute = createPathFilter({
   "": createMethodFilter({
-    "GET": createEndpoint(
+    GET: createEndpoint(
       { query: null, body: null },
       async () => {
-        const activeWorkers = activeGenerationWorkers;
+        const workerInstances = await workerInstanceStore.getAll();
-        const { sdInstances } = await getConfig();
+        const workers = await Promise.all(workerInstances.map(getWorkerData));
-
-        const workers = Object.entries(sdInstances).map(([sdInstanceId, sdInstance]) => ({
-          id: sdInstanceId,
-          name: sdInstance.name ?? sdInstanceId,
-          maxResolution: sdInstance.maxResolution,
-          active: activeWorkers.has(sdInstanceId),
-          lastOnline: null,
-          imagesPerMinute: null,
-          pixelsPerSecond: null,
-          pixelStepsPerSecond: null,
-        }));
 
         return {
           status: 200,
-          body: { type: "application/json", data: workers },
+          body: { type: "application/json", data: workers satisfies WorkerData[] },
+        };
+      },
+    ),
+    POST: createEndpoint(
+      {
+        query: {
+          sessionId: { type: "string" },
+        },
+        body: {
+          type: "application/json",
+          schema: {
+            type: "object",
+            properties: {
+              key: { type: "string" },
+              name: { type: ["string", "null"] },
+              sdUrl: { type: "string" },
+              sdAuth: {
+                type: ["object", "null"],
+                properties: {
+                  user: { type: "string" },
+                  password: { type: "string" },
+                },
+                required: ["user", "password"],
+              },
+            },
+            required: ["key", "name", "sdUrl", "sdAuth"],
+          },
+        },
+      },
+      async ({ query, body }) => {
+        const session = sessions.get(query.sessionId);
+        if (!session?.userId) {
+          return { status: 401, body: { type: "text/plain", data: "Must be logged in" } };
+        }
+        const chat = await bot.api.getChat(session.userId);
+        if (chat.type !== "private") throw new Error("Chat is not private");
+        if (!chat.username) {
+          return { status: 403, body: { type: "text/plain", data: "Must have a username" } };
+        }
+        const config = await getConfig();
+        if (!config?.adminUsernames?.includes(chat.username)) {
+          return { status: 403, body: { type: "text/plain", data: "Must be an admin" } };
+        }
+        const workerInstance = await workerInstanceStore.create({
+          key: body.data.key,
+          name: body.data.name,
+          sdUrl: body.data.sdUrl,
+          sdAuth: body.data.sdAuth,
+        });
+        logger().info(`User ${chat.username} created worker ${workerInstance.id}`);
+        const worker = await getWorkerData(workerInstance);
+        return {
+          status: 200,
+          body: { type: "application/json", data: worker satisfies WorkerData },
         };
       },
     ),
   }),
 
-  "{workerId}/loras": createMethodFilter({
+  "{workerId}": createPathFilter({
+    "": createMethodFilter({
       GET: createEndpoint(
         { query: null, body: null },
         async ({ params }) => {
-        const { sdInstances } = await getConfig();
+          const workerInstance = await workerInstanceStore.getById(params.workerId);
-        const sdInstance = sdInstances[params.workerId];
+          if (!workerInstance) {
-        if (!sdInstance) {
             return { status: 404, body: { type: "text/plain", data: `Worker not found` } };
           }
-        const sdClient = createOpenApiFetch<SdApi.paths>({ baseUrl: sdInstance.api.url });
+          const worker: WorkerData = await getWorkerData(workerInstance);
-        const lorasResponse = await sdClient.GET("/sdapi/v1/loras", {
+          return {
-          headers: sdInstance.api.auth ? { Authorization: sdInstance.api.auth } : undefined,
+            status: 200,
+            body: { type: "application/json", data: worker satisfies WorkerData },
+          };
+        },
+      ),
+      PATCH: createEndpoint(
+        {
+          query: {
+            sessionId: { type: "string" },
+          },
+          body: {
+            type: "application/json",
+            schema: {
+              type: "object",
+              properties: {
+                key: { type: "string" },
+                name: { type: ["string", "null"] },
+                sdUrl: { type: "string" },
+                auth: {
+                  type: ["object", "null"],
+                  properties: {
+                    user: { type: "string" },
+                    password: { type: "string" },
+                  },
+                  required: ["user", "password"],
+                },
+              },
+            },
+          },
+        },
+        async ({ params, query, body }) => {
+          const workerInstance = await workerInstanceStore.getById(params.workerId);
+          if (!workerInstance) {
+            return { status: 404, body: { type: "text/plain", data: `Worker not found` } };
+          }
+          const session = sessions.get(query.sessionId);
+          if (!session?.userId) {
+            return { status: 401, body: { type: "text/plain", data: "Must be logged in" } };
+          }
+          const chat = await bot.api.getChat(session.userId);
+          if (chat.type !== "private") throw new Error("Chat is not private");
+          if (!chat.username) {
+            return { status: 403, body: { type: "text/plain", data: "Must have a username" } };
+          }
+          const config = await getConfig();
+          if (!config?.adminUsernames?.includes(chat.username)) {
+            return { status: 403, body: { type: "text/plain", data: "Must be an admin" } };
+          }
+          if (body.data.name !== undefined) {
+            workerInstance.value.name = body.data.name;
+          }
+          if (body.data.sdUrl !== undefined) {
+            workerInstance.value.sdUrl = body.data.sdUrl;
+          }
+          if (body.data.auth !== undefined) {
+            workerInstance.value.sdAuth = body.data.auth;
+          }
+          logger().info(
+            `User ${chat.username} updated worker ${params.workerId}: ${JSON.stringify(body.data)}`,
+          );
+          await workerInstance.update();
+          const worker = await getWorkerData(workerInstance);
+          return {
+            status: 200,
+            body: { type: "application/json", data: worker satisfies WorkerData },
+          };
+        },
+      ),
+      DELETE: createEndpoint(
+        {
+          query: {
+            sessionId: { type: "string" },
+          },
+          body: null,
+        },
+        async ({ params, query }) => {
+          const workerInstance = await workerInstanceStore.getById(params.workerId);
+          if (!workerInstance) {
+            return { status: 404, body: { type: "text/plain", data: `Worker not found` } };
+          }
+          const session = sessions.get(query.sessionId);
+          if (!session?.userId) {
+            return { status: 401, body: { type: "text/plain", data: "Must be logged in" } };
+          }
+          const chat = await bot.api.getChat(session.userId);
+          if (chat.type !== "private") throw new Error("Chat is not private");
+          if (!chat.username) {
+            return { status: 403, body: { type: "text/plain", data: "Must have a username" } };
+          }
+          const config = await getConfig();
+          if (!config?.adminUsernames?.includes(chat.username)) {
+            return { status: 403, body: { type: "text/plain", data: "Must be an admin" } };
+          }
+          logger().info(`User ${chat.username} deleted worker ${params.workerId}`);
+          await workerInstance.delete();
+          return { status: 200, body: { type: "application/json", data: null } };
+        },
+      ),
+    }),
+
+    "loras": createMethodFilter({
+      GET: createEndpoint(
+        { query: null, body: null },
+        async ({ params }) => {
+          const workerInstance = await workerInstanceStore.getById(params.workerId);
+          if (!workerInstance) {
+            return { status: 404, body: { type: "text/plain", data: `Worker not found` } };
+          }
+          const sdClient = createOpenApiFetch<SdApi.paths>({
+            baseUrl: workerInstance.value.sdUrl,
+            headers: getAuthHeader(workerInstance.value.sdAuth),
           });
+          const lorasResponse = await sdClient.GET("/sdapi/v1/loras", {});
           if (lorasResponse.error) {
             return {
               status: 500,
@@ -62,23 +276,26 @@ export const workersRoute = createPathFilter({
       ),
     }),
 
-  "{workerId}/models": createMethodFilter({
+    "models": createMethodFilter({
       GET: createEndpoint(
         { query: null, body: null },
         async ({ params }) => {
-        const { sdInstances } = await getConfig();
+          const workerInstance = await workerInstanceStore.getById(params.workerId);
-        const sdInstance = sdInstances[params.workerId];
+          if (!workerInstance) {
-        if (!sdInstance) {
             return { status: 404, body: { type: "text/plain", data: `Worker not found` } };
           }
-        const sdClient = createOpenApiFetch<SdApi.paths>({ baseUrl: sdInstance.api.url });
+          const sdClient = createOpenApiFetch<SdApi.paths>({
-        const modelsResponse = await sdClient.GET("/sdapi/v1/sd-models", {
+            baseUrl: workerInstance.value.sdUrl,
-          headers: sdInstance.api.auth ? { Authorization: sdInstance.api.auth } : undefined,
+            headers: getAuthHeader(workerInstance.value.sdAuth),
           });
+          const modelsResponse = await sdClient.GET("/sdapi/v1/sd-models", {});
           if (modelsResponse.error) {
             return {
               status: 500,
-            body: { type: "text/plain", data: `Models request failed: ${modelsResponse["error"]}` },
+              body: {
+                type: "text/plain",
+                data: `Models request failed: ${modelsResponse["error"]}`,
+              },
             };
           }
           const models = modelsResponse.data.map((model) => ({
@@ -94,6 +311,7 @@ export const workersRoute = createPathFilter({
         },
       ),
     }),
+  }),
 });
 
 export interface Lora {

app/config.ts

@@ -21,27 +21,8 @@ export const configSchema = {
         negative_prompt: { type: "string" },
       },
     },
-    sdInstances: {
-      type: "object",
-      additionalProperties: {
-        type: "object",
-        properties: {
-          name: { type: "string" },
-          api: {
-            type: "object",
-            properties: {
-              url: { type: "string" },
-              auth: { type: "string" },
   },
-            required: ["url"],
+  required: ["adminUsernames", "maxUserJobs", "maxJobs", "defaultParams"],
-          },
-          maxResolution: { type: "number" },
-        },
-        required: ["api", "maxResolution"],
-      },
-    },
-  },
-  required: ["adminUsernames", "maxUserJobs", "maxJobs", "defaultParams", "sdInstances"],
 } as const satisfies JsonSchema;
 
 export type Config = jsonType<typeof configSchema>;
@@ -55,13 +36,6 @@ export async function getConfig(): Promise<Config> {
     maxUserJobs: config?.maxUserJobs ?? Infinity,
     maxJobs: config?.maxJobs ?? Infinity,
     defaultParams: config?.defaultParams ?? {},
-    sdInstances: config?.sdInstances ??
-      {
-        "local": {
-          api: { url: Deno.env.get("SD_API_URL") ?? "http://127.0.0.1:7860/" },
-          maxResolution: 1024 * 1024,
-        },
-      },
   };
 }
 
@@ -73,7 +47,6 @@ export async function setConfig(newConfig: Partial<Config>): Promise<void> {
     maxUserJobs: newConfig.maxUserJobs ?? oldConfig.maxUserJobs,
     maxJobs: newConfig.maxJobs ?? oldConfig.maxJobs,
     defaultParams: newConfig.defaultParams ?? oldConfig.defaultParams,
-    sdInstances: newConfig.sdInstances ?? oldConfig.sdInstances,
   };
   await db.set(["config"], config);
 }

app/dailyStatsStore.ts

@@ -13,10 +13,12 @@ export const dailyStatsSchema = {
   properties: {
     userIds: { type: "array", items: { type: "number" } },
     imageCount: { type: "number" },
+    stepCount: { type: "number" },
     pixelCount: { type: "number" },
+    pixelStepCount: { type: "number" },
     timestamp: { type: "number" },
   },
-  required: ["userIds", "imageCount", "pixelCount", "timestamp"],
+  required: ["userIds", "imageCount", "stepCount", "pixelCount", "pixelStepCount", "timestamp"],
 } as const satisfies JsonSchema;
 
 export type DailyStats = jsonType<typeof dailyStatsSchema>;
@@ -27,7 +29,9 @@ export const getDailyStats = kvMemoize(
   async (year: number, month: number, day: number): Promise<DailyStats> => {
     const userIdSet = new Set<number>();
     let imageCount = 0;
+    let stepCount = 0;
     let pixelCount = 0;
+    let pixelStepCount = 0;
 
     const after = new Date(Date.UTC(year, month - 1, day));
     const before = new Date(Date.UTC(year, month - 1, day + 1));
@@ -39,13 +43,19 @@ export const getDailyStats = kvMemoize(
     ) {
       userIdSet.add(generation.value.from.id);
       imageCount++;
+      stepCount += generation.value.info?.steps ?? 0;
       pixelCount += (generation.value.info?.width ?? 0) * (generation.value.info?.height ?? 0);
+      pixelStepCount += (generation.value.info?.width ?? 0) *
+        (generation.value.info?.height ?? 0) *
+        (generation.value.info?.steps ?? 0);
     }
 
     return {
       userIds: [...userIdSet],
       imageCount,
+      stepCount,
       pixelCount,
+      pixelStepCount,
       timestamp: Date.now(),
     };
   },

app/generationQueue.ts

@@ -10,12 +10,14 @@ import { bot } from "../bot/mod.ts";
 import { PngInfo } from "../bot/parsePngInfo.ts";
 import { formatOrdinal } from "../utils/formatOrdinal.ts";
 import { formatUserChat } from "../utils/formatUserChat.ts";
+import { getAuthHeader } from "../utils/getAuthHeader.ts";
 import { SdError } from "./SdError.ts";
 import { getConfig } from "./config.ts";
 import { db, fs } from "./db.ts";
 import { SdGenerationInfo } from "./generationStore.ts";
 import * as SdApi from "./sdApi.ts";
 import { uploadQueue } from "./uploadQueue.ts";
+import { workerInstanceStore } from "./workerInstanceStore.ts";
 
 const logger = () => getLogger();
 
@@ -34,7 +36,7 @@ interface GenerationJob {
   chat: Chat;
   requestMessage: Message;
   replyMessage: Message;
-  sdInstanceId?: string;
+  workerInstanceKey?: string;
   progress?: number;
 }
 
@@ -47,18 +49,17 @@ export const activeGenerationWorkers = new Map<string, Worker<GenerationJob>>();
  */
 export async function processGenerationQueue() {
   while (true) {
-    const config = await getConfig();
+    for await (const workerInstance of workerInstanceStore.listAll()) {
-
+      const activeWorker = activeGenerationWorkers.get(workerInstance.id);
-    for (const [sdInstanceId, sdInstance] of Object.entries(config?.sdInstances ?? {})) {
-      const activeWorker = activeGenerationWorkers.get(sdInstanceId);
       if (activeWorker?.isProcessing) {
         continue;
       }
 
       const workerSdClient = createOpenApiClient<SdApi.paths>({
-        baseUrl: sdInstance.api.url,
+        baseUrl: workerInstance.value.sdUrl,
-        headers: { "Authorization": sdInstance.api.auth },
+        headers: getAuthHeader(workerInstance.value.sdAuth),
       });
+
       // check if worker is up
       const activeWorkerStatus = await workerSdClient.GET("/sdapi/v1/memory", {
         signal: AbortSignal.timeout(10_000),
@@ -70,16 +71,20 @@ export async function processGenerationQueue() {
           return response;
         })
         .catch((error) => {
-          logger().debug(`Worker ${sdInstanceId} is down: ${error}`);
+          workerInstance.update({ lastError: { message: error.message, time: Date.now() } })
+            .catch(() => undefined);
+          logger().debug(`Worker ${workerInstance.value.key} is down: ${error}`);
         });
+
       if (!activeWorkerStatus?.data) {
         continue;
       }
 
       // create worker
       const newWorker = generationQueue.createWorker(async ({ state }, updateJob) => {
-        await processGenerationJob(state, updateJob, sdInstanceId);
+        await processGenerationJob(state, updateJob, workerInstance.id);
       });
+
       newWorker.addEventListener("error", (e) => {
         logger().error(
           `Generation failed for ${formatUserChat(e.detail.job.state)}: ${e.detail.error}`,
@@ -96,11 +101,19 @@ export async function processGenerationQueue() {
           },
         ).catch(() => undefined);
         newWorker.stopProcessing();
-        logger().info(`Stopped worker ${sdInstanceId}`);
+        workerInstance.update({ lastError: { message: e.detail.error.message, time: Date.now() } })
+          .catch(() => undefined);
+        logger().info(`Stopped worker ${workerInstance.value.key}`);
       });
+
+      newWorker.addEventListener("complete", () => {
+        workerInstance.update({ lastOnlineTime: Date.now() }).catch(() => undefined);
+      });
+
+      await workerInstance.update({ lastOnlineTime: Date.now() });
       newWorker.processJobs();
-      activeGenerationWorkers.set(sdInstanceId, newWorker);
+      activeGenerationWorkers.set(workerInstance.id, newWorker);
-      logger().info(`Started worker ${sdInstanceId}`);
+      logger().info(`Started worker ${workerInstance.value.key}`);
     }
     await delay(60_000);
   }
@@ -112,19 +125,19 @@ export async function processGenerationQueue() {
 async function processGenerationJob(
   state: GenerationJob,
   updateJob: (job: Partial<JobData<GenerationJob>>) => Promise<void>,
-  sdInstanceId: string,
+  workerInstanceId: string,
 ) {
   const startDate = new Date();
   const config = await getConfig();
-  const sdInstance = config?.sdInstances?.[sdInstanceId];
+  const workerInstance = await workerInstanceStore.getById(workerInstanceId);
-  if (!sdInstance) {
+  if (!workerInstance) {
-    throw new Error(`Unknown sdInstanceId: ${sdInstanceId}`);
+    throw new Error(`Unknown workerInstanceId: ${workerInstanceId}`);
   }
   const workerSdClient = createOpenApiClient<SdApi.paths>({
-    baseUrl: sdInstance.api.url,
+    baseUrl: workerInstance.value.sdUrl,
-    headers: { "Authorization": sdInstance.api.auth },
+    headers: getAuthHeader(workerInstance.value.sdAuth),
   });
-  state.sdInstanceId = sdInstanceId;
+  state.workerInstanceKey = workerInstance.value.key;
   state.progress = 0;
   logger().debug(`Generation started for ${formatUserChat(state)}`);
   await updateJob({ state: state });
@@ -142,14 +155,16 @@ async function processGenerationJob(
   await bot.api.editMessageText(
     state.replyMessage.chat.id,
     state.replyMessage.message_id,
-    `Generating your prompt now... 0% using ${sdInstance.name || sdInstanceId}`,
+    `Generating your prompt now... 0% using ${
+      workerInstance.value.name || workerInstance.value.key
+    }`,
     { maxAttempts: 1 },
   ).catch(() => undefined);
 
   // reduce size if worker can't handle the resolution
   const size = limitSize(
     { ...config.defaultParams, ...state.task.params },
-    sdInstance.maxResolution,
+    1024 * 1024,
   );
   function limitSize(
     { width, height }: { width?: number; height?: number },
@@ -233,7 +248,7 @@ async function processGenerationJob(
         state.replyMessage.message_id,
         `Generating your prompt now... ${
           (progressResponse.data.progress * 100).toFixed(0)
-        }% using ${sdInstance.name || sdInstanceId}`,
+        }% using ${workerInstance.value.name || workerInstance.value.key}`,
         { maxAttempts: 1 },
       ).catch(() => undefined);
     }
@@ -268,7 +283,7 @@ async function processGenerationJob(
     from: state.from,
     requestMessage: state.requestMessage,
     replyMessage: state.replyMessage,
-    sdInstanceId: sdInstanceId,
+    workerInstanceKey: workerInstance.value.key,
     startDate,
     endDate: new Date(),
     imageKeys,

app/generationStore.ts

@@ -5,7 +5,7 @@ import { db } from "./db.ts";
 export interface GenerationSchema {
   from: User;
   chat: Chat;
-  sdInstanceId?: string;
+  sdInstanceId?: string; // TODO: change to workerInstanceKey
   info?: SdGenerationInfo;
   startDate?: Date;
   endDate?: Date;
@@ -48,6 +48,7 @@ export interface SdGenerationInfo {
 type GenerationIndices = {
   fromId: number;
   chatId: number;
+  workerInstanceKey: string;
 };
 
 export const generationStore = new Store<GenerationSchema, GenerationIndices>(
@@ -57,6 +58,7 @@ export const generationStore = new Store<GenerationSchema, GenerationIndices>(
     indices: {
       fromId: { getValue: (item) => item.from.id },
       chatId: { getValue: (item) => item.chat.id },
+      workerInstanceKey: { getValue: (item) => item.sdInstanceId ?? "" },
     },
   },
 );

app/globalStats.ts

@@ -9,17 +9,19 @@ export const globalStatsSchema = {
   properties: {
     userIds: { type: "array", items: { type: "number" } },
     imageCount: { type: "number" },
+    stepCount: { type: "number" },
     pixelCount: { type: "number" },
+    pixelStepCount: { type: "number" },
     timestamp: { type: "number" },
   },
-  required: ["userIds", "imageCount", "pixelCount", "timestamp"],
+  required: ["userIds", "imageCount", "stepCount", "pixelCount", "pixelStepCount", "timestamp"],
 } as const satisfies JsonSchema;
 
 export type GlobalStats = jsonType<typeof globalStatsSchema>;
 
-export const liveGlobalStats: GlobalStats = await getGlobalStats();
+export const globalStats: GlobalStats = await getGlobalStats();
 
-export async function getGlobalStats(): Promise<GlobalStats> {
+async function getGlobalStats(): Promise<GlobalStats> {
   // find the year/month/day of the first generation
   const startDate = await generationStore.getAll({}, { limit: 1 })
     .then((generations) => generations[0]?.id)
@@ -28,7 +30,9 @@ export async function getGlobalStats(): Promise<GlobalStats> {
   // iterate to today and sum up stats
   const userIdSet = new Set<number>();
   let imageCount = 0;
+  let stepCount = 0;
   let pixelCount = 0;
+  let pixelStepCount = 0;
 
   const tomorrow = addDays(new Date(), 1);
 
@@ -44,13 +48,17 @@ export async function getGlobalStats(): Promise<GlobalStats> {
     );
     for (const userId of dailyStats.userIds) userIdSet.add(userId);
     imageCount += dailyStats.imageCount;
+    stepCount += dailyStats.stepCount;
     pixelCount += dailyStats.pixelCount;
+    pixelStepCount += dailyStats.pixelStepCount;
   }
 
   return {
     userIds: [...userIdSet],
     imageCount,
+    stepCount,
     pixelCount,
+    pixelStepCount,
     timestamp: Date.now(),
   };
 }

app/uploadQueue.ts

@@ -9,7 +9,7 @@ import { bot } from "../bot/mod.ts";
 import { formatUserChat } from "../utils/formatUserChat.ts";
 import { db, fs } from "./db.ts";
 import { generationStore, SdGenerationInfo } from "./generationStore.ts";
-import { liveGlobalStats } from "./globalStatsStore.ts";
+import { globalStats } from "./globalStats.ts";
 
 const logger = () => getLogger();
 
@@ -18,7 +18,7 @@ interface UploadJob {
   chat: Chat;
   requestMessage: Message;
   replyMessage: Message;
-  sdInstanceId: string;
+  workerInstanceKey?: string;
   startDate: Date;
   endDate: Date;
   imageKeys: Deno.KvKey[];
@@ -56,7 +56,7 @@ export async function processUploadQueue() {
           fmt`${bold("CFG scale:")} ${state.info.cfg_scale}, `,
           fmt`${bold("Seed:")} ${state.info.seed}, `,
           fmt`${bold("Size")}: ${state.info.width}x${state.info.height}, `,
-          fmt`${bold("Worker")}: ${state.sdInstanceId}, `,
+          state.workerInstanceKey ? fmt`${bold("Worker")}: ${state.workerInstanceKey}, ` : "",
           fmt`${bold("Time taken")}: ${format(jobDurationMs, { ignoreZero: true })}`,
         ]
         : [],
@@ -104,7 +104,7 @@ export async function processUploadQueue() {
     await generationStore.create({
       from: state.from,
       chat: state.chat,
-      sdInstanceId: state.sdInstanceId,
+      sdInstanceId: state.workerInstanceKey,
       startDate: state.startDate,
       endDate: new Date(),
       info: state.info,
@@ -112,11 +112,13 @@ export async function processUploadQueue() {
 
     // update live stats
     {
-      liveGlobalStats.imageCount++;
+      globalStats.imageCount++;
-      liveGlobalStats.pixelCount += state.info.width * state.info.height;
+      globalStats.stepCount += state.info.steps;
-      const userIdSet = new Set(liveGlobalStats.userIds);
+      globalStats.pixelCount += state.info.width * state.info.height;
+      globalStats.pixelStepCount += state.info.width * state.info.height * state.info.steps;
+      const userIdSet = new Set(globalStats.userIds);
       userIdSet.add(state.from.id);
-      liveGlobalStats.userIds = [...userIdSet];
+      globalStats.userIds = [...userIdSet];
     }
 
     // delete the status message

app/userStatsStore.ts

@@ -13,14 +13,24 @@ export const userStatsSchema = {
   properties: {
     userId: { type: "number" },
     imageCount: { type: "number" },
+    stepCount: { type: "number" },
     pixelCount: { type: "number" },
+    pixelStepCount: { type: "number" },
     tagCountMap: {
       type: "object",
       additionalProperties: { type: "number" },
     },
     timestamp: { type: "number" },
   },
-  required: ["userId", "imageCount", "pixelCount", "tagCountMap", "timestamp"],
+  required: [
+    "userId",
+    "imageCount",
+    "stepCount",
+    "pixelCount",
+    "pixelStepCount",
+    "tagCountMap",
+    "timestamp",
+  ],
 } as const satisfies JsonSchema;
 
 export type UserStats = jsonType<typeof userStatsSchema>;
@@ -48,7 +58,9 @@ export const getUserStats = kvMemoize(
   ["userStats"],
   async (userId: number): Promise<UserStats> => {
     let imageCount = 0;
+    let stepCount = 0;
     let pixelCount = 0;
+    let pixelStepCount = 0;
     const tagCountMap: Record<string, number> = {};
 
     logger().info(`Calculating user stats for ${userId}`);
@@ -57,7 +69,11 @@ export const getUserStats = kvMemoize(
       const generation of generationStore.listBy("fromId", { value: userId })
     ) {
       imageCount++;
+      stepCount += generation.value.info?.steps ?? 0;
       pixelCount += (generation.value.info?.width ?? 0) * (generation.value.info?.height ?? 0);
+      pixelStepCount += (generation.value.info?.width ?? 0) *
+        (generation.value.info?.height ?? 0) *
+        (generation.value.info?.steps ?? 0);
 
       const tags = generation.value.info?.prompt
         // split on punctuation and newlines
@@ -85,7 +101,9 @@ export const getUserStats = kvMemoize(
     return {
       userId,
       imageCount,
+      stepCount,
       pixelCount,
+      pixelStepCount,
       tagCountMap,
       timestamp: Date.now(),
     };

app/workerInstanceStore.ts

@@ -0,0 +1,38 @@
+import { Store } from "indexed_kv";
+import { JsonSchema, jsonType } from "t_rest/server";
+import { db } from "./db.ts";
+
+export const workerInstanceSchema = {
+  type: "object",
+  properties: {
+    // used for counting stats
+    key: { type: "string" },
+    // used for display
+    name: { type: ["string", "null"] },
+    sdUrl: { type: "string" },
+    sdAuth: {
+      type: ["object", "null"],
+      properties: {
+        user: { type: "string" },
+        password: { type: "string" },
+      },
+      required: ["user", "password"],
+    },
+    lastOnlineTime: { type: "number" },
+    lastError: {
+      type: "object",
+      properties: {
+        message: { type: "string" },
+        time: { type: "number" },
+      },
+      required: ["message", "time"],
+    },
+  },
+  required: ["key", "name", "sdUrl", "sdAuth"],
+} as const satisfies JsonSchema;
+
+export type WorkerInstance = jsonType<typeof workerInstanceSchema>;
+
+export const workerInstanceStore = new Store<WorkerInstance>(db, "workerInstances", {
+  indices: {},
+});

bot/queueCommand.ts

@@ -1,9 +1,9 @@
 import { CommandContext } from "grammy";
 import { bold, fmt } from "grammy_parse_mode";
-import { getConfig } from "../app/config.ts";
 import { activeGenerationWorkers, generationQueue } from "../app/generationQueue.ts";
 import { getFlagEmoji } from "../utils/getFlagEmoji.ts";
 import { ErisContext } from "./mod.ts";
+import { workerInstanceStore } from "../app/workerInstanceStore.ts";
 
 export async function queueCommand(ctx: CommandContext<ErisContext>) {
   let formattedMessage = await getMessageText();
@@ -14,8 +14,8 @@ export async function queueCommand(ctx: CommandContext<ErisContext>) {
   handleFutureUpdates().catch(() => undefined);
 
   async function getMessageText() {
-    const config = await getConfig();
     const allJobs = await generationQueue.getAllJobs();
+    const workerInstances = await workerInstanceStore.getAll();
     const processingJobs = allJobs
       .filter((job) => job.lockUntil > new Date()).map((job) => ({ ...job, index: 0 }));
     const waitingJobs = allJobs
@@ -30,24 +30,17 @@ export async function queueCommand(ctx: CommandContext<ErisContext>) {
           `${job.index}. `,
           fmt`${bold(job.state.from.first_name)} `,
           job.state.from.last_name ? fmt`${bold(job.state.from.last_name)} ` : "",
-          job.state.from.username ? `(@${job.state.from.username}) ` : "",
           getFlagEmoji(job.state.from.language_code) ?? "",
-          job.state.chat.type === "private" ? " in private chat " : ` in ${job.state.chat.title} `,
+          job.index === 0 && job.state.progress && job.state.workerInstanceKey
-          job.state.chat.type !== "private" && job.state.chat.type !== "group" &&
+            ? `(${(job.state.progress * 100).toFixed(0)}% using ${job.state.workerInstanceKey}) `
-            job.state.chat.username
-            ? `(@${job.state.chat.username}) `
-            : "",
-          job.index === 0 && job.state.progress && job.state.sdInstanceId
-            ? `(${(job.state.progress * 100).toFixed(0)}% using ${job.state.sdInstanceId}) `
             : "",
           "\n",
         ])
         : ["Queue is empty.\n"],
       "\nActive workers:\n",
-      ...Object.entries(config.sdInstances).flatMap(([sdInstanceId, sdInstance]) => [
+      ...workerInstances.flatMap((workerInstace) => [
-        activeGenerationWorkers.get(sdInstanceId)?.isProcessing ? "✅ " : "☠️ ",
+        activeGenerationWorkers.get(workerInstace.id)?.isProcessing ? "✅ " : "☠️ ",
-        fmt`${bold(sdInstance.name || sdInstanceId)} `,
+        fmt`${bold(workerInstace.value.name || workerInstace.value.key)} `,
-        `(max ${(sdInstance.maxResolution / 1000000).toFixed(1)} Mpx) `,
         "\n",
       ]),
     ]);

deno.json

@@ -42,6 +42,7 @@
     "react": "https://esm.sh/react@18.2.0?dev",
     "react-dom/client": "https://esm.sh/react-dom@18.2.0/client?dev",
     "react-router-dom": "https://esm.sh/react-router-dom@6.16.0?dev",
+    "react-intl": "https://esm.sh/react-intl@6.4.7?external=react&alias=@types/react:react&dev",
     "swr": "https://esm.sh/swr@2.2.4?dev",
     "swr/mutation": "https://esm.sh/swr@2.2.4/mutation?dev",
     "use-local-storage": "https://esm.sh/use-local-storage@3.0.0?dev",

ui/App.tsx

@@ -4,8 +4,9 @@ import useLocalStorage from "use-local-storage";
 import { AppHeader } from "./AppHeader.tsx";
 import { QueuePage } from "./QueuePage.tsx";
 import { SettingsPage } from "./SettingsPage.tsx";
+import { StatsPage } from "./StatsPage.tsx";
+import { WorkersPage } from "./WorkersPage.tsx";
 import { fetchApi, handleResponse } from "./apiClient.tsx";
-import { HomePage } from "./HomePage.tsx";
 
 export function App() {
   // store session ID in the local storage
@@ -30,7 +31,8 @@ export function App() {
       />
       <div className="self-center w-full max-w-screen-md flex flex-col items-stretch gap-4 p-4">
         <Routes>
-          <Route path="/" element={<HomePage />} />
+          <Route path="/" element={<StatsPage />} />
+          <Route path="/workers" element={<WorkersPage sessionId={sessionId} />} />
           <Route path="/queue" element={<QueuePage />} />
           <Route path="/settings" element={<SettingsPage sessionId={sessionId} />} />
         </Routes>

ui/AppHeader.tsx

@@ -57,6 +57,9 @@ export function AppHeader(
         <NavTab to="/">
           Stats
         </NavTab>
+        <NavTab to="/workers">
+          Workers
+        </NavTab>
         <NavTab to="/queue">
           Queue
         </NavTab>

ui/Counter.tsx

@@ -2,18 +2,18 @@ import { cx } from "@twind/core";
 import React from "react";
 
 function CounterDigit(props: { value: number; transitionDurationMs?: number }) {
-  const { value, transitionDurationMs = 1000 } = props;
+  const { value, transitionDurationMs = 1500 } = props;
   const rads = -(Math.floor(value) % 1_000_000) * 2 * Math.PI * 0.1;
 
   return (
-    <span className="w-[1em] h-[1.3em] relative">
+    <span className="w-[1em] relative">
       {Array.from({ length: 10 }).map((_, i) => (
         <span
           key={i}
           className="absolute inset-0 grid place-items-center transition-transform duration-1000 ease-in-out [backface-visibility:hidden]"
           style={{
             transform: `rotateX(${rads + i * 2 * Math.PI * 0.1}rad)`,
-            transformOrigin: `center center 1.8em`,
+            transformOrigin: `center center 2em`,
             transitionDuration: `${transitionDurationMs}ms`,
           }}
         >
@@ -24,31 +24,35 @@ function CounterDigit(props: { value: number; transitionDurationMs?: number }) {
   );
 }
 
+const Spacer = () => 
+<span className="border-l-1 mx-[0.1em] border-zinc-200 dark:border-zinc-700" />;
+
+const CounterText = (props: { children: React.ReactNode }) => (
+  <span className="self-center px-[0.1em]">
+    {props.children}
+  </span>
+);
+
 export function Counter(props: {
   value: number;
   digits: number;
+  fractionDigits?: number;
   transitionDurationMs?: number;
   className?: string;
+  postfix?: string;
 }) {
-  const { value, digits, transitionDurationMs, className } = props;
+  const { value, digits, fractionDigits = 0, transitionDurationMs, className, postfix } = props;
 
   return (
     <span
       className={cx(
-        "inline-flex items-stretch border-1 border-zinc-300 dark:border-zinc-700 shadow-inner rounded-md overflow-hidden",
+        "inline-flex h-[1.5em] items-stretch border-1 border-zinc-300 dark:border-zinc-700 shadow-inner rounded-md overflow-hidden",
         className,
       )}
     >
       {Array.from({ length: digits })
         .flatMap((_, i) => [
-          i > 0 && i % 3 === 0
+          i > 0 && i % 3 === 0 ? <Spacer key={`spacer${i}`} /> : null,
-            ? (
-              <span
-                key={`spacer${i}`}
-                className="border-l-1 mx-[0.1em] border-zinc-200 dark:border-zinc-700"
-              />
-            )
-            : null,
           <CounterDigit
             key={`digit${i}`}
             value={value / 10 ** i}
@@ -56,6 +60,30 @@ export function Counter(props: {
           />,
         ])
         .reverse()}
+
+      {fractionDigits > 0 && (
+        <>
+          <Spacer />
+          <CounterText>.</CounterText>
+          <Spacer />
+          {Array.from({ length: fractionDigits })
+            .flatMap((_, i) => [
+              i > 0 && i % 3 === 0 ? <Spacer key={`fractionSpacer${i}`} /> : null,
+              <CounterDigit
+                key={`fractionDigit${i}`}
+                value={value * 10 ** (i + 1)}
+                transitionDurationMs={transitionDurationMs}
+              />,
+            ])}
+        </>
+      )}
+
+      {postfix && (
+        <>
+          <Spacer />
+          <CounterText>{postfix}</CounterText>
+        </>
+      )}
     </span>
   );
 }

ui/HomePage.tsx

@@ -1,48 +0,0 @@
-import React from "react";
-import { fetchApi, handleResponse } from "./apiClient.tsx";
-import useSWR from "swr";
-import { eachDayOfInterval, endOfMonth, startOfMonth, subMonths } from "date-fns";
-import { UTCDateMini } from "@date-fns/utc";
-import { Counter } from "./Counter.tsx";
-
-export function HomePage() {
-  const globalStats = useSWR(
-    ["stats", "GET", {}] as const,
-    (args) => fetchApi(...args).then(handleResponse),
-    { refreshInterval: 2_000 },
-  );
-
-  return (
-    <div className="my-16 flex flex-col gap-16 text-zinc-600 dark:text-zinc-400">
-      <p className="flex flex-col items-center gap-2 text-2xl sm:text-3xl">
-        <span>Pixels painted</span>
-        <Counter
-          className="font-bold text-zinc-700 dark:text-zinc-300"
-          value={globalStats.data?.pixelCount ?? 0}
-          digits={12}
-          transitionDurationMs={3_000}
-        />
-      </p>
-      <div className="flex flex-col md:flex-row gap-16 md:gap-8">
-        <p className="flex-grow flex flex-col items-center gap-2 text-2xl">
-          <span>Images generated</span>
-          <Counter
-            className="font-bold text-zinc-700 dark:text-zinc-300"
-            value={globalStats.data?.imageCount ?? 0}
-            digits={9}
-            transitionDurationMs={1_500}
-          />
-        </p>
-        <p className="flex-grow flex flex-col items-center gap-2 text-2xl">
-          <span>Unique users</span>
-          <Counter
-            className="font-bold text-zinc-700 dark:text-zinc-300"
-            value={globalStats.data?.userCount ?? 0}
-            digits={6}
-            transitionDurationMs={1_500}
-          />
-        </p>
-      </div>
-    </div>
-  );
-}

ui/QueuePage.tsx

@@ -41,7 +41,7 @@ export function QueuePage() {
               <Progress className="w-full h-full" value={job.state.progress} />}
           </span>
           <span className="text-sm text-zinc-500 dark:text-zinc-400">
-            {job.state.sdInstanceId}
+            {job.state.workerInstanceKey}
           </span>
         </li>
       ))}

ui/StatsPage.tsx

@@ -0,0 +1,94 @@
+import React from "react";
+import { fetchApi, handleResponse } from "./apiClient.tsx";
+import useSWR from "swr";
+import { Counter } from "./Counter.tsx";
+
+export function StatsPage() {
+  const globalStats = useSWR(
+    ["stats", "GET", {}] as const,
+    (args) => fetchApi(...args).then(handleResponse),
+    { refreshInterval: 2_000 },
+  );
+
+  return (
+    <div className="my-16 flex flex-col gap-16 text-zinc-600 dark:text-zinc-400">
+      <p className="flex flex-col items-center gap-2 text-2xl sm:text-3xl">
+        <span>Pixelsteps diffused</span>
+        <Counter
+          className="font-bold text-zinc-700 dark:text-zinc-300"
+          value={globalStats.data?.pixelStepCount ?? 0}
+          digits={15}
+          transitionDurationMs={3_000}
+        />
+        <Counter
+          className="text-base"
+          value={(globalStats.data?.pixelStepsPerMinute ?? 0) / 60}
+          digits={9}
+          transitionDurationMs={2_000}
+          postfix="/s"
+        />
+      </p>
+      <p className="flex flex-col items-center gap-2 text-2xl sm:text-3xl">
+        <span>Pixels painted</span>
+        <Counter
+          className="font-bold text-zinc-700 dark:text-zinc-300"
+          value={globalStats.data?.pixelCount ?? 0}
+          digits={15}
+          transitionDurationMs={3_000}
+        />
+        <Counter
+          className="text-base"
+          value={(globalStats.data?.pixelsPerMinute ?? 0) / 60}
+          digits={9}
+          transitionDurationMs={2_000}
+          postfix="/s"
+        />
+      </p>
+      <div className="flex flex-col md:flex-row gap-16 md:gap-8">
+        <p className="flex-grow flex flex-col items-center gap-2 text-2xl">
+          <span>Steps processed</span>
+          <Counter
+            className="font-bold text-zinc-700 dark:text-zinc-300"
+            value={globalStats.data?.stepCount ?? 0}
+            digits={9}
+            transitionDurationMs={3_000}
+          />
+          <Counter
+            className="text-base"
+            value={(globalStats.data?.stepsPerMinute ?? 0) / 60}
+            digits={3}
+            fractionDigits={3}
+            transitionDurationMs={2_000}
+            postfix="/s"
+          />
+        </p>
+        <p className="flex-grow flex flex-col items-center gap-2 text-2xl">
+          <span>Images generated</span>
+          <Counter
+            className="font-bold text-zinc-700 dark:text-zinc-300"
+            value={globalStats.data?.imageCount ?? 0}
+            digits={9}
+            transitionDurationMs={3_000}
+          />
+          <Counter
+            className="text-base"
+            value={(globalStats.data?.imagesPerMinute ?? 0) / 60}
+            digits={3}
+            fractionDigits={3}
+            transitionDurationMs={2_000}
+            postfix="/s"
+          />
+        </p>
+      </div>
+      <p className="flex-grow flex flex-col items-center gap-2 text-2xl">
+        <span>Unique users</span>
+        <Counter
+          className="font-bold text-zinc-700 dark:text-zinc-300"
+          value={globalStats.data?.userCount ?? 0}
+          digits={6}
+          transitionDurationMs={1_500}
+        />
+      </p>
+    </div>
+  );
+}

ui/WorkersPage.tsx

@@ -0,0 +1,330 @@
+import React, { useRef } from "react";
+import { FormattedRelativeTime } from "react-intl";
+import useSWR, { useSWRConfig } from "swr";
+import { WorkerData } from "../api/workersRoute.ts";
+import { Counter } from "./Counter.tsx";
+import { fetchApi, handleResponse } from "./apiClient.tsx";
+
+export function WorkersPage(props: { sessionId?: string }) {
+  const { sessionId } = props;
+
+  const createWorkerModalRef = useRef<HTMLDialogElement>(null);
+
+  const session = useSWR(
+    sessionId ? ["sessions/{sessionId}", "GET", { params: { sessionId } }] as const : null,
+    (args) => fetchApi(...args).then(handleResponse),
+  );
+  const user = useSWR(
+    session.data?.userId
+      ? ["users/{userId}", "GET", { params: { userId: String(session.data.userId) } }] as const
+      : null,
+    (args) => fetchApi(...args).then(handleResponse),
+  );
+
+  const workers = useSWR(
+    ["workers", "GET", {}] as const,
+    (args) => fetchApi(...args).then(handleResponse),
+    { refreshInterval: 5000 },
+  );
+
+  return (
+    <>
+      <ul className="my-4 flex flex-col gap-2">
+        {workers.data?.map((worker) => (
+          <WorkerListItem key={worker.id} worker={worker} sessionId={sessionId} />
+        ))}
+      </ul>
+      {user.data?.isAdmin && (
+        <button
+          className="button-filled"
+          onClick={() => createWorkerModalRef.current?.showModal()}
+        >
+          Add worker
+        </button>
+      )}
+      <dialog
+        className="dialog"
+        ref={createWorkerModalRef}
+      >
+        <form
+          method="dialog"
+          className="flex flex-col gap-4 p-4"
+          onSubmit={(e) => {
+            e.preventDefault();
+            const data = new FormData(e.target as HTMLFormElement);
+            const key = data.get("key") as string;
+            const name = data.get("name") as string;
+            const sdUrl = data.get("url") as string;
+            const user = data.get("user") as string;
+            const password = data.get("password") as string;
+            console.log(key, name, user, password);
+            workers.mutate(async () => {
+              const worker = await fetchApi("workers", "POST", {
+                query: { sessionId: sessionId! },
+                body: {
+                  type: "application/json",
+                  data: {
+                    key,
+                    name: name || null,
+                    sdUrl,
+                    sdAuth: user && password ? { user, password } : null,
+                  },
+                },
+              }).then(handleResponse);
+              return [...(workers.data ?? []), worker];
+            });
+
+            createWorkerModalRef.current?.close();
+          }}
+        >
+          <div className="flex gap-4">
+            <label className="flex flex-1 flex-col items-stretch gap-1">
+              <span className="text-sm">
+                Key
+              </span>
+              <input
+                className="input-text"
+                type="text"
+                name="key"
+                required
+              />
+              <span className="text-sm text-zinc-500">
+                Used for counting statistics
+              </span>
+            </label>
+            <label className="flex flex-1 flex-col items-stretch gap-1">
+              <span className="text-sm">
+                Name
+              </span>
+              <input
+                className="input-text"
+                type="text"
+                name="name"
+              />
+              <span className="text-sm text-zinc-500">
+                Used for display
+              </span>
+            </label>
+          </div>
+          <label className="flex flex-col items-stretch gap-1">
+            <span className="text-sm">
+              URL
+            </span>
+            <input
+              className="input-text"
+              type="url"
+              name="url"
+              required
+              pattern="https?://.*"
+            />
+          </label>
+          <div className="flex gap-4">
+            <label className="flex flex-1 flex-col items-stretch gap-1">
+              <span className="text-sm">
+                User
+              </span>
+              <input
+                className="input-text"
+                type="text"
+                name="user"
+              />
+            </label>
+            <label className="flex flex-1 flex-col items-stretch gap-1">
+              <span className="text-sm">
+                Password
+              </span>
+              <input
+                className="input-text"
+                type="password"
+                name="password"
+              />
+            </label>
+          </div>
+
+          <div className="flex gap-2 items-center justify-end">
+            <button
+              type="button"
+              className="button-outlined"
+              onClick={() => createWorkerModalRef.current?.close()}
+            >
+              Close
+            </button>
+            <button type="submit" disabled={!sessionId} className="button-filled">
+              Save
+            </button>
+          </div>
+        </form>
+      </dialog>
+    </>
+  );
+}
+
+function WorkerListItem(props: { worker: WorkerData; sessionId?: string }) {
+  const { worker, sessionId } = props;
+  const editWorkerModalRef = useRef<HTMLDialogElement>(null);
+  const deleteWorkerModalRef = useRef<HTMLDialogElement>(null);
+
+  const session = useSWR(
+    sessionId ? ["sessions/{sessionId}", "GET", { params: { sessionId } }] as const : null,
+    (args) => fetchApi(...args).then(handleResponse),
+  );
+  const user = useSWR(
+    session.data?.userId
+      ? ["users/{userId}", "GET", { params: { userId: String(session.data.userId) } }] as const
+      : null,
+    (args) => fetchApi(...args).then(handleResponse),
+  );
+
+  const { mutate } = useSWRConfig();
+
+  return (
+    <li className="flex flex-col gap-2 rounded-md bg-zinc-100 dark:bg-zinc-800 p-2">
+      <p className="font-bold">
+        {worker.name ?? worker.key}
+      </p>
+      {worker.isActive ? <p>✅ Active</p> : (
+        <>
+          <p>
+            Last seen {worker.lastOnlineTime
+              ? (
+                <FormattedRelativeTime
+                  value={(worker.lastOnlineTime - Date.now()) / 1000}
+                  numeric="auto"
+                  updateIntervalInSeconds={1}
+                />
+              )
+              : "never"}
+          </p>
+          {worker.lastError && (
+            <p className="text-red-500">
+              {worker.lastError.message} (
+              <FormattedRelativeTime
+                value={(worker.lastError.time - Date.now()) / 1000}
+                numeric="auto"
+                updateIntervalInSeconds={1}
+              />)
+            </p>
+          )}
+        </>
+      )}
+      <p className="flex gap-1">
+        <Counter value={worker.imagesPerMinute} digits={2} fractionDigits={1} /> images per minute,
+        {" "}
+        <Counter value={worker.stepsPerMinute} digits={3} /> steps per minute
+      </p>
+      <p className="flex gap-2">
+        {user.data?.isAdmin && (
+          <>
+            <button
+              className="button-outlined"
+              onClick={() => editWorkerModalRef.current?.showModal()}
+            >
+              Settings
+            </button>
+            <button
+              className="button-outlined"
+              onClick={() => deleteWorkerModalRef.current?.showModal()}
+            >
+              Delete
+            </button>
+          </>
+        )}
+      </p>
+      <dialog
+        className="dialog"
+        ref={editWorkerModalRef}
+      >
+        <form
+          method="dialog"
+          className="flex flex-col gap-4 p-4"
+          onSubmit={(e) => {
+            e.preventDefault();
+            const data = new FormData(e.target as HTMLFormElement);
+            const user = data.get("user") as string;
+            const password = data.get("password") as string;
+            console.log(user, password);
+            fetchApi("workers/{workerId}", "PATCH", {
+              params: { workerId: worker.id },
+              query: { sessionId: sessionId! },
+              body: {
+                type: "application/json",
+                data: {
+                  auth: user && password ? { user, password } : null,
+                },
+              },
+            });
+            editWorkerModalRef.current?.close();
+          }}
+        >
+          <div className="flex gap-4">
+            <label className="flex flex-1 flex-col items-stretch gap-1">
+              <span className="text-sm">
+                User
+              </span>
+              <input
+                className="input-text"
+                type="text"
+                name="user"
+              />
+            </label>
+            <label className="flex flex-1 flex-col items-stretch gap-1">
+              <span className="text-sm">
+                Password
+              </span>
+              <input
+                className="input-text"
+                type="password"
+                name="password"
+              />
+            </label>
+          </div>
+          <div className="flex gap-2 items-center justify-end">
+            <button
+              type="button"
+              className="button-outlined"
+              onClick={() => editWorkerModalRef.current?.close()}
+            >
+              Close
+            </button>
+            <button type="submit" disabled={!sessionId} className="button-filled">
+              Save
+            </button>
+          </div>
+        </form>
+      </dialog>
+      <dialog
+        className="dialog"
+        ref={deleteWorkerModalRef}
+      >
+        <form
+          method="dialog"
+          className="flex flex-col gap-4 p-4"
+          onSubmit={(e) => {
+            e.preventDefault();
+            fetchApi("workers/{workerId}", "DELETE", {
+              params: { workerId: worker.id },
+              query: { sessionId: sessionId! },
+            }).then(handleResponse).then(() => mutate(["workers", "GET", {}]));
+            deleteWorkerModalRef.current?.close();
+          }}
+        >
+          <p>
+            Are you sure you want to delete this worker?
+          </p>
+          <div className="flex gap-2 items-center justify-end">
+            <button
+              type="button"
+              className="button-outlined"
+              onClick={() => deleteWorkerModalRef.current?.close()}
+            >
+              Close
+            </button>
+            <button type="submit" disabled={!sessionId} className="button-filled">
+              Delete
+            </button>
+          </div>
+        </form>
+      </dialog>
+    </li>
+  );
+}

ui/main.tsx

@@ -4,9 +4,12 @@ import React from "react";
 import { App } from "./App.tsx";
 import "./twind.ts";
 import { BrowserRouter } from "react-router-dom";
+import { IntlProvider } from "react-intl";
 
 createRoot(document.body).render(
   <BrowserRouter>
+    <IntlProvider locale="en">
       <App />
+    </IntlProvider>
   </BrowserRouter>,
 );

utils/formatUserChat.ts

@@ -1,7 +1,7 @@
 import { Chat, User } from "grammy_types";
 
 export function formatUserChat(
-  ctx: { from?: User; chat?: Chat; sdInstanceId?: string },
+  ctx: { from?: User; chat?: Chat; workerInstanceKey?: string },
 ) {
   const msg: string[] = [];
   if (ctx.from) {
@@ -26,8 +26,8 @@ export function formatUserChat(
       }
     }
   }
-  if (ctx.sdInstanceId) {
+  if (ctx.workerInstanceKey) {
-    msg.push(`using ${ctx.sdInstanceId}`);
+    msg.push(`using ${ctx.workerInstanceKey}`);
   }
   return msg.join(" ");
 }

utils/getAuthHeader.ts

@@ -0,0 +1,4 @@
+export function getAuthHeader(auth: { user: string; password: string } | null) {
+  if (!auth) return {};
+  return { "Authorization": `Basic ${btoa(`${auth.user}:${auth.password}`)}` };
+}