"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.acceptCrossOrigin = exports.fetchBody = exports.respondStatic = exports.respondWithJSON = exports.respond500 = exports.respond404 = exports.respond204 = exports.addPreventCachingHeaders = exports.PREVENT_CACHING_HEADERS = void 0;
const lodash_1 = require("lodash");
const promisify_stream_1 = __importDefault(require("../utils/promisify-stream"));
const builtin_header_names_1 = __importDefault(require("../request-pipeline/builtin-header-names"));
const json_1 = require("./json");
const STATIC_RESOURCES_DEFAULT_CACHING_OPTIONS = {
    maxAge: 30,
    mustRevalidate: true,
};
exports.PREVENT_CACHING_HEADERS = {
    [builtin_header_names_1.default.cacheControl]: 'no-cache, no-store, must-revalidate',
    [builtin_header_names_1.default.pragma]: 'no-cache',
};
function addPreventCachingHeaders(res) {
    res.setHeader(builtin_header_names_1.default.cacheControl, exports.PREVENT_CACHING_HEADERS[builtin_header_names_1.default.cacheControl]);
    res.setHeader(builtin_header_names_1.default.pragma, exports.PREVENT_CACHING_HEADERS[builtin_header_names_1.default.pragma]);
}
exports.addPreventCachingHeaders = addPreventCachingHeaders;
function respond204(res) {
    res.statusCode = 204;
    res.end();
}
exports.respond204 = respond204;
function respond404(res) {
    res.statusCode = 404;
    res.end();
}
exports.respond404 = respond404;
function respond500(res, err = '') {
    res.statusCode = 500;
    res.end(err);
}
exports.respond500 = respond500;
function respondWithJSON(res, data, skipContentType, shouldAcceptCrossOrigin) {
    if (!skipContentType)
        res.setHeader(builtin_header_names_1.default.contentType, 'application/json');
    // NOTE: GH-105
    addPreventCachingHeaders(res);
    if (shouldAcceptCrossOrigin)
        acceptCrossOrigin(res);
    res.end(data ? (0, json_1.stringify)(data) : '');
}
exports.respondWithJSON = respondWithJSON;
function respondStatic(req, res, resource, cachingOptions = {}) {
    cachingOptions = (0, lodash_1.defaultsDeep)(cachingOptions, STATIC_RESOURCES_DEFAULT_CACHING_OPTIONS);
    if (resource.etag === req.headers[builtin_header_names_1.default.ifNoneMatch]) {
        res.statusCode = 304;
        res.end();
    }
    else {
        const { maxAge, mustRevalidate } = cachingOptions;
        res.setHeader(builtin_header_names_1.default.cacheControl, `max-age=${maxAge}${mustRevalidate ? ', must-revalidate' : ''}`);
        res.setHeader(builtin_header_names_1.default.eTag, resource.etag);
        res.setHeader(builtin_header_names_1.default.contentType, resource.contentType);
        res.end(resource.content);
    }
}
exports.respondStatic = respondStatic;
function fetchBody(r, contentLength) {
    return (0, promisify_stream_1.default)(r, contentLength);
}
exports.fetchBody = fetchBody;
function acceptCrossOrigin(res) {
    res.setHeader('access-control-allow-origin', '*');
}
exports.acceptCrossOrigin = acceptCrossOrigin;