eris/bot/mod.ts

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import { Api, Bot, Context, RawApi, session, SessionFlavor } from "grammy";
import { FileFlavor, hydrateFiles } from "grammy_files";
import { hydrateReply, ParseModeFlavor } from "grammy_parse_mode";
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import { run, sequentialize } from "grammy_runner";
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import { error, info, warning } from "std/log/mod.ts";
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import { sessions } from "../api/sessionsRoute.ts";
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import { formatUserChat } from "../utils/formatUserChat.ts";
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import { omitUndef } from "../utils/omitUndef.ts";
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import { broadcastCommand } from "./broadcastCommand.ts";
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import { cancelCommand } from "./cancelCommand.ts";
import { img2imgCommand, img2imgQuestion } from "./img2imgCommand.ts";
import { pnginfoCommand, pnginfoQuestion } from "./pnginfoCommand.ts";
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import { queueCommand } from "./queueCommand.ts";
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import { txt2imgCommand, txt2imgQuestion } from "./txt2imgCommand.ts";
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interface SessionData {
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chat: ErisChatData;
user: ErisUserData;
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}
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interface ErisChatData {
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language?: string | undefined;
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}
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interface ErisUserData {
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params?: Record<string, string> | undefined;
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}
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export type ErisContext =
& FileFlavor<ParseModeFlavor<Context>>
& SessionFlavor<SessionData>;
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type WithRetryApi<T extends RawApi> = {
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[M in keyof T]: T[M] extends (args: infer P, ...rest: infer A) => infer R
? (args: P extends object ? P & { maxAttempts?: number; maxWait?: number } : P, ...rest: A) => R
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: T[M];
};
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type ErisApi = Api<WithRetryApi<RawApi>>;
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export const bot = new Bot<ErisContext, ErisApi>(
Deno.env.get("TG_BOT_TOKEN")!,
{
client: { timeoutSeconds: 20 },
},
);
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bot.use(hydrateReply);
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bot.use(sequentialize((ctx) => ctx.chat?.id.toString()));
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bot.use(session<SessionData, ErisContext>({
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type: "multi",
chat: {
initial: () => ({}),
},
user: {
getSessionKey: (ctx) => ctx.from?.id.toFixed(),
initial: () => ({}),
},
}));
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bot.api.config.use(hydrateFiles(bot.token));
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// Automatically retry bot requests if we get a "too many requests" or telegram internal error
bot.api.config.use(async (prev, method, payload, signal) => {
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const maxAttempts = payload && ("maxAttempts" in payload) ? payload.maxAttempts ?? 3 : 3;
const maxWait = payload && ("maxWait" in payload) ? payload.maxWait ?? 10 : 10;
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let attempt = 0;
while (true) {
attempt++;
const result = await prev(method, payload, signal);
if (result.ok) return result;
if (result.error_code !== 429) return result;
if (attempt >= maxAttempts) return result;
const retryAfter = result.parameters?.retry_after ?? (attempt * 5);
if (retryAfter > maxWait) return result;
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warning(
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`${method} (attempt ${attempt}) failed: ${result.error_code} ${result.description}`,
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);
await new Promise((resolve) => setTimeout(resolve, retryAfter * 1000));
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}
});
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bot.catch((err) => {
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error(
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`Handling update from ${formatUserChat(err.ctx)} failed: ${err.name} ${err.message}`,
);
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});
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// if error happened, try to reply to the user with the error
bot.use(async (ctx, next) => {
try {
await next();
} catch (err) {
try {
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await ctx.reply(
`Handling update failed: ${err}`,
omitUndef({
reply_to_message_id: ctx.message?.message_id,
allow_sending_without_reply: true,
}),
);
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} catch {
throw err;
}
}
});
bot.api.setMyShortDescription("I can generate furry images from text");
bot.api.setMyDescription(
"I can generate furry images from text. " +
"Send /txt2img to generate an image.",
);
bot.api.setMyCommands([
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{ command: "txt2img", description: "Generate image from text" },
{ command: "img2img", description: "Generate image from image" },
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{ command: "pnginfo", description: "Show generation parameters of an image" },
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{ command: "queue", description: "Show the current queue" },
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{ command: "cancel", description: "Cancel all your requests" },
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]);
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bot.command("start", async (ctx) => {
if (ctx.match) {
const id = ctx.match.trim();
const session = sessions.get(id);
if (session == null) {
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await ctx.reply(
"Login failed: Invalid session ID",
omitUndef({
reply_to_message_id: ctx.message?.message_id,
}),
);
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return;
}
session.userId = ctx.from?.id;
sessions.set(id, session);
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info(`User ${formatUserChat(ctx)} logged in`);
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// TODO: show link to web ui
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await ctx.reply(
"Login successful! You can now return to the WebUI.",
omitUndef({
reply_to_message_id: ctx.message?.message_id,
}),
);
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return;
}
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await ctx.reply(
"Hello! Use the /txt2img command to generate an image",
omitUndef({
reply_to_message_id: ctx.message?.message_id,
}),
);
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});
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bot.command("txt2img", txt2imgCommand);
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bot.use(txt2imgQuestion.middleware());
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bot.command("img2img", img2imgCommand);
bot.use(img2imgQuestion.middleware());
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bot.command("pnginfo", pnginfoCommand);
bot.use(pnginfoQuestion.middleware());
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bot.command("queue", queueCommand);
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bot.command("cancel", cancelCommand);
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bot.command("broadcast", broadcastCommand);
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bot.command("crash", () => {
throw new Error("Crash command used");
});
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export async function runBot() {
const runner = run(bot);
await runner.task();
}