var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import ApplicationComponent from "../ApplicationComponent";
import { ServiceUnavailableHttpError } from "../HttpError";
export default class MaintenanceComponent extends ApplicationComponent {
    constructor(application, canServe) {
        super();
        this.application = application;
        this.canServe = canServe;
    }
    start(app, router) {
        return __awaiter(this, void 0, void 0, function* () {
            router.use((req, res, next) => {
                if (res.headersSent) {
                    return next();
                }
                if (!this.application.isReady()) {
                    res.header({ 'Retry-After': 60 });
                    res.locals.refresh_after = 5;
                    throw new ServiceUnavailableHttpError('Watch My Stream is readying up. Please wait a few seconds...');
                }
                if (!this.canServe()) {
                    res.locals.refresh_after = 30;
                    throw new ServiceUnavailableHttpError('Watch My Stream is unavailable due to failure of dependent services.');
                }
                next();
            });
        });
    }
    stop() {
        return __awaiter(this, void 0, void 0, function* () {
        });
    }
}
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