"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
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());
    });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createApp = exports.POST_PROXY_ENDPOINTS = exports.GET_PROXY_ENDPOINTS = void 0;
const bee_js_1 = require("@ethersphere/bee-js");
const express_1 = __importDefault(require("express"));
const http_proxy_middleware_1 = require("http-proxy-middleware");
const bzzLink = __importStar(require("./bzz-link"));
const config_1 = require("./config");
const identity_1 = require("./identity");
const logger_1 = require("./logger");
const metrics_1 = require("./metrics");
const readiness_1 = require("./readiness");
const utils_1 = require("./utils");
const SWARM_STAMP_HEADER = 'swarm-postage-batch-id';
exports.GET_PROXY_ENDPOINTS = [
    '/bzz/:reference',
    '/bzz/:reference/*',
    '/bytes/:reference',
    '/chunks/:reference',
    '/feeds/:owner/:topic',
];
exports.POST_PROXY_ENDPOINTS = ['/bzz', '/bytes', '/chunks', '/feeds/:owner/:topic', '/soc/:owner/:id'];
const createApp = ({ hostname, beeApiUrl, beeDebugApiUrl, authorization, cidSubdomains, ensSubdomains, removePinHeader, exposeHashedIdentity, }, stampManager) => {
    const commonOptions = {
        target: beeApiUrl,
        changeOrigin: true,
        logProvider: () => logger_1.logger,
    };
    const bee = new bee_js_1.Bee(beeApiUrl);
    const beeDebug = new bee_js_1.BeeDebug(beeDebugApiUrl);
    // Create Express Server
    const app = (0, express_1.default)();
    // Register hashed identity
    if (exposeHashedIdentity) {
        if (!beeDebugApiUrl) {
            throw Error('BEE_DEBUG_API_URL is not set, but EXPOSE_HASHED_IDENTITY is set to true');
        }
        const beeDebug = new bee_js_1.BeeDebug(beeDebugApiUrl);
        (0, identity_1.fetchBeeIdentity)(beeDebug);
        app.use((_, res, next) => {
            res.set(identity_1.HASHED_IDENTITY_HEADER, (0, identity_1.getHashedIdentity)());
            next();
        });
    }
    if (hostname) {
        const subdomainOffset = hostname.split('.').length;
        app.set('subdomain offset', subdomainOffset);
    }
    // Authorization
    if (authorization) {
        app.use('', (req, res, next) => {
            if (req.headers.authorization === authorization) {
                next();
            }
            else {
                res.sendStatus(403);
            }
        });
    }
    if (cidSubdomains || ensSubdomains) {
        if (!hostname) {
            throw new Error('For Bzz.link support you have to configure HOSTNAME env!');
        }
        if (hostname === config_1.DEFAULT_HOSTNAME) {
            logger_1.logger.warn(`bzz.link support is enabled but HOSTNAME is set to the default ${config_1.DEFAULT_HOSTNAME}`);
        }
        if (cidSubdomains)
            logger_1.logger.info(`enabling CID subdomain support with hostname ${hostname}`);
        if (ensSubdomains)
            logger_1.logger.info(`enabling ENS subdomain support with hostname ${hostname}`);
        app.get('*', (0, http_proxy_middleware_1.createProxyMiddleware)(bzzLink.requestFilter, Object.assign(Object.assign({}, commonOptions), { cookieDomainRewrite: hostname, router: bzzLink.routerClosure(beeApiUrl, Boolean(cidSubdomains), Boolean(ensSubdomains)) })));
        app.use(bzzLink.errorHandler);
    }
    else {
        logger_1.logger.info('starting the app without bzz.link support (see HOSTNAME, ENS_SUBDOMAINS and CID_SUBDOMAINS)');
    }
    app.get('/metrics', (_req, res) => __awaiter(void 0, void 0, void 0, function* () {
        res.write(yield metrics_1.register.metrics());
        res.end();
    }));
    // Health endpoint
    app.get('/health', (_req, res) => res.send('OK'));
    // Readiness endpoint
    app.get('/readiness', (_req, res) => __awaiter(void 0, void 0, void 0, function* () {
        const readinessStatus = yield (0, readiness_1.checkReadiness)(bee, beeDebug, stampManager);
        if (readinessStatus === readiness_1.ReadinessStatus.OK) {
            res.end('OK');
        }
        else if (readinessStatus === readiness_1.ReadinessStatus.NO_STAMP) {
            res.status(503).end(readinessStatus);
        }
        else {
            res.status(502).end(readinessStatus);
        }
    }));
    // Download file/collection/chunk proxy
    app.get(exports.GET_PROXY_ENDPOINTS, (0, http_proxy_middleware_1.createProxyMiddleware)(commonOptions));
    const options = Object.assign({}, commonOptions);
    options.onProxyReq = (proxyReq, _req, res) => {
        if (removePinHeader) {
            proxyReq.removeHeader('swarm-pin');
        }
        if (stampManager) {
            proxyReq.removeHeader(SWARM_STAMP_HEADER);
            try {
                proxyReq.setHeader(SWARM_STAMP_HEADER, stampManager.postageStamp);
            }
            catch (error) {
                logger_1.logger.error('proxy failure', error);
                if ((0, utils_1.getErrorMessage)(error) === config_1.ERROR_NO_STAMP) {
                    res.writeHead(503).end(config_1.ERROR_NO_STAMP);
                }
                else {
                    res.writeHead(503).end('Service Unavailable');
                }
            }
        }
    };
    // Upload file/collection proxy
    app.post(exports.POST_PROXY_ENDPOINTS, (0, http_proxy_middleware_1.createProxyMiddleware)(options));
    app.use(express_1.default.static('public'));
    app.use((_req, res) => res.sendStatus(404));
    return app;
};
exports.createApp = createApp;