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Viewing file:     context.js (3.56 KB)      -rw-r--r--

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const composer_1 = require("../composer");
const debug_1 = require("debug");
const debug = (0, debug_1.default)('telegraf:scenes:context');
const noop = () => Promise.resolve();
const now = () => Math.floor(Date.now() / 1000);
class SceneContextScene {
    constructor(ctx, scenes, options) {
        this.ctx = ctx;
        this.scenes = scenes;
        this.leaving = false;
        // @ts-expect-error {} might not be assignable to D
        const fallbackSessionDefault = {};
        this.options = { defaultSession: fallbackSessionDefault, ...options };
    }
    get session() {
        var _a, _b;
        const defaultSession = this.options.defaultSession;
        let session = (_b = (_a = this.ctx.session) === null || _a === void 0 ? void 0 : _a.__scenes) !== null && _b !== void 0 ? _b : defaultSession;
        if (session.expires !== undefined && session.expires < now()) {
            session = defaultSession;
        }
        if (this.ctx.session === undefined) {
            this.ctx.session = { __scenes: session };
        }
        else {
            this.ctx.session.__scenes = session;
        }
        return session;
    }
    get state() {
        var _a;
        var _b;
        return ((_a = (_b = this.session).state) !== null && _a !== void 0 ? _a : (_b.state = {}));
    }
    set state(value) {
        this.session.state = { ...value };
    }
    get current() {
        var _a;
        const sceneId = (_a = this.session.current) !== null && _a !== void 0 ? _a : this.options.default;
        return sceneId === undefined || !this.scenes.has(sceneId)
            ? undefined
            : this.scenes.get(sceneId);
    }
    reset() {
        if (this.ctx.session !== undefined)
            this.ctx.session.__scenes = this.options.defaultSession;
    }
    async enter(sceneId, initialState = {}, silent = false) {
        var _a, _b;
        if (!this.scenes.has(sceneId)) {
            throw new Error(`Can't find scene: ${sceneId}`);
        }
        if (!silent) {
            await this.leave();
        }
        debug('Entering scene', sceneId, initialState, silent);
        this.session.current = sceneId;
        this.state = initialState;
        const ttl = (_b = (_a = this.current) === null || _a === void 0 ? void 0 : _a.ttl) !== null && _b !== void 0 ? _b : this.options.ttl;
        if (ttl !== undefined) {
            this.session.expires = now() + ttl;
        }
        if (this.current === undefined || silent) {
            return;
        }
        const handler = 'enterMiddleware' in this.current &&
            typeof this.current.enterMiddleware === 'function'
            ? this.current.enterMiddleware()
            : this.current.middleware();
        return await handler(this.ctx, noop);
    }
    reenter() {
        return this.session.current === undefined
            ? undefined
            : this.enter(this.session.current, this.state);
    }
    async leave() {
        if (this.leaving)
            return;
        debug('Leaving scene');
        try {
            this.leaving = true;
            if (this.current === undefined) {
                return;
            }
            const handler = 'leaveMiddleware' in this.current &&
                typeof this.current.leaveMiddleware === 'function'
                ? this.current.leaveMiddleware()
                : composer_1.default.passThru();
            await handler(this.ctx, noop);
            return this.reset();
        }
        finally {
            this.leaving = false;
        }
    }
}
exports.default = SceneContextScene;