97 lines
2.6 KiB
JavaScript
97 lines
2.6 KiB
JavaScript
const crypto = require("crypto");
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const { Bot, Keyboard } = require("grammy");
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const log = require("./log");
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const util = require("./util");
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const cache = require("./cache");
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const config = require("./config");
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const request = require("./request");
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const bot = new Bot(config.get("TELEGRAM_TOKEN"));
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log.debug("bot initialized");
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bot.command("start", async (ctx) => {
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log.debug(ctx.update, "/start cmd executed");
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const tgLinked = await cache.get(ctx.msg.from.id);
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log.debug({ cache: tgLinked }, "cache request:tgLinked");
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if (tgLinked) {
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const localSessionId = crypto.randomBytes(16).toString("hex");
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await cache.set(tgLinked, localSessionId);
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const res = util.parseUssdResponse(
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await request.proxy(localSessionId, tgLinked)
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);
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return ctx.reply(res.text, {
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reply_markup: {
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resize_keyboard: true,
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keyboard: res.keyboard,
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},
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});
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}
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const keyboard = new Keyboard();
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return await ctx.reply(
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"Click on the button below to link your phone number.",
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{
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reply_markup: keyboard.requestContact("Link Phone"),
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}
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);
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});
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bot.on("message:text", async (ctx) => {
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log.debug(ctx.update, "msg:text received");
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const tgLinked = await cache.get(ctx.msg.from.id);
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const localSessionId = await cache.get(tgLinked);
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log.debug({ cache: localSessionId }, "cache request:localSessionId");
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if (tgLinked && localSessionId) {
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const res = util.parseUssdResponse(
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await request.proxy(localSessionId, tgLinked, ctx.msg.text)
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);
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if (res.code === "END") {
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await cache.del(tgLinked);
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return await ctx.reply(res.text, {
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reply_markup: { remove_keyboard: true },
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});
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}
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return await ctx.reply(res.text, {
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reply_markup: {
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resize_keyboard: true,
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keyboard: res.keyboard,
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},
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});
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}
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return await ctx.reply(
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"Session expired or account not linked. /start the bot again to access your Sarafu account."
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);
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});
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bot.on("msg:contact", async (ctx) => {
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log.debug(ctx.update, "msg:contact received");
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const contact = ctx.msg.contact;
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if (ctx.msg.reply_to_message.from.is_bot && ctx.from.id === contact.user_id) {
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if (contact.phone_number.slice(0, 4) !== "+254") {
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return ctx.reply("Sarafu is only available in Kenya at the moment.");
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}
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await cache.set(contact.user_id, contact.phone_number.slice(1));
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return ctx.reply(
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"Phone number successfully linked. /start the bot again to access your Sarafu account."
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);
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}
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log.info(ctx.update.user, "contact spoof attempted");
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return ctx.reply("Could not verify sent contact.");
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});
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module.exports = bot;
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