"use strict";
/**
 * Implements Lambda Response Streaming by polyfilling
 * `awslambda.streamifyResponse` and `awslambda.HttpResponseStream.from`.
 *
 * If they're used, `execute` will return a `ReadableStream` as `body`.
 *
 * See https://aws.amazon.com/fr/blogs/compute/introducing-aws-lambda-response-streaming/ for reference.
 */
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };
    return function (d, b) {
        if (typeof b !== "function" && b !== null)
            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
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 __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (g && (g = 0, op[0] && (_ = 0)), _) try {
            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
            }
            op = body.call(thisArg, _);
        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.StreamingBody = void 0;
var stream_1 = require("stream");
function streamifyResponse(handler) {
    var _this = this;
    return function (event, context) {
        return new Promise(function (resolve, reject) { return __awaiter(_this, void 0, void 0, function () {
            var body, metadata, error_1;
            var _a, _b, _c, _d;
            return __generator(this, function (_e) {
                switch (_e.label) {
                    case 0:
                        body = new StreamingBody(resolve);
                        _e.label = 1;
                    case 1:
                        _e.trys.push([1, 3, , 4]);
                        return [4 /*yield*/, handler(event, body, context)];
                    case 2:
                        metadata = _e.sent();
                        if (!body.headersSent) {
                            body.sendHeader(metadata);
                        }
                        (_b = (_a = context.__lambdaLocal).onInvocationEnd) === null || _b === void 0 ? void 0 : _b.call(_a);
                        return [3 /*break*/, 4];
                    case 3:
                        error_1 = _e.sent();
                        reject(error_1);
                        (_d = (_c = context.__lambdaLocal).onInvocationEnd) === null || _d === void 0 ? void 0 : _d.call(_c, error_1);
                        return [3 /*break*/, 4];
                    case 4: return [2 /*return*/];
                }
            });
        }); });
    };
}
var StreamingBody = /** @class */ (function (_super) {
    __extends(StreamingBody, _super);
    function StreamingBody(resolve) {
        var _this = _super.call(this) || this;
        _this.resolve = resolve;
        _this.headersSent = false;
        return _this;
    }
    StreamingBody.prototype.sendHeader = function (metadata) {
        if (metadata === void 0) { metadata = {}; }
        var headers = __assign({}, metadata.headers);
        if (this.contentType) {
            headers["Content-Type"] = this.contentType;
        }
        this.resolve(__assign(__assign({}, metadata), { headers: headers, body: this }));
        this.headersSent = true;
    };
    StreamingBody.prototype.setContentType = function (contentType) {
        this.contentType = contentType;
    };
    return StreamingBody;
}(stream_1.PassThrough));
exports.StreamingBody = StreamingBody;
var HttpResponseStream = /** @class */ (function () {
    function HttpResponseStream() {
    }
    HttpResponseStream.from = function (responseStream, metadata) {
        responseStream.sendHeader(metadata);
        return responseStream;
    };
    return HttpResponseStream;
}());
global.awslambda = global.awslambda || {
    streamifyResponse: streamifyResponse,
    HttpResponseStream: HttpResponseStream,
};