"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    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) : new P(function (resolve) { resolve(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 (_) try {
            if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [0, 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 });
var Nightmare = require("nightmare");
var web_server_1 = require("./web-server");
var selector = "svg";
/**
 * This component is responsible for turning data and a chart definition into a chart.
 */
var ChartRenderer = /** @class */ (function () {
    function ChartRenderer() {
        /**
         * Nightmare headless browser instance.
         */
        this.nightmare = null;
        /**
         * Interface to the web-server that serves the interactive chart.
         */
        this.webServer = null;
    }
    /**
     * Start the chart renderer.
     * For performance reasons the chart render can be reused to render multiple charts.
     */
    ChartRenderer.prototype.start = function (showBrowser) {
        return __awaiter(this, void 0, void 0, function () {
            var autoAssignPortNo;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        autoAssignPortNo = 0;
                        this.webServer = new web_server_1.WebServer(autoAssignPortNo);
                        return [4 /*yield*/, this.webServer.start()];
                    case 1:
                        _a.sent();
                        this.nightmare = new Nightmare({
                            show: showBrowser,
                            frame: showBrowser,
                        });
                        this.nightmare.on('crashed', function (evt) {
                            throw new Error("Nightmare crashed " + evt.toString());
                        });
                        this.nightmare.on('console', function (type, message) {
                            if (type === 'log') {
                                console.log('LOG: ' + message);
                                return;
                            }
                            if (type === 'warn') {
                                console.warn('LOG: ' + message);
                                return;
                            }
                            if (type === 'error') {
                                console.error("Browser JavaScript error:");
                                console.error(message);
                            }
                        });
                        return [2 /*return*/];
                }
            });
        });
    };
    /**
     * Finish the chart renderer.
     */
    ChartRenderer.prototype.end = function () {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.nightmare.end()];
                    case 1:
                        _a.sent();
                        this.nightmare = null;
                        return [4 /*yield*/, this.webServer.stop()];
                    case 2:
                        _a.sent();
                        this.webServer = null;
                        return [2 /*return*/];
                }
            });
        });
    };
    /**
     * Load the chart into the Electron browser.
     */
    ChartRenderer.prototype.loadChart = function (chartDef) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        this.webServer.chartDef = chartDef; //todo: this might prevent charts from being rendered in parallel!
                        this.nightmare.goto(this.webServer.getUrl());
                        return [4 /*yield*/, this.nightmare.wait(selector)];
                    case 1:
                        _a.sent();
                        return [2 /*return*/];
                }
            });
        });
    };
    /**
     * Create a chart from data and a chart definition and render it to an image file.
     */
    ChartRenderer.prototype.renderImage = function (chartDef, outputFilePath) {
        return __awaiter(this, void 0, void 0, function () {
            var _this = this;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.loadChart(chartDef)];
                    case 1:
                        _a.sent();
                        return [4 /*yield*/, this.nightmare.evaluate(function (selector) {
                                var body = document.querySelector('body');
                                var element = document.querySelector(selector);
                                var rect = element.getBoundingClientRect();
                                return {
                                    bodyWidth: body.scrollWidth,
                                    bodyHeight: body.scrollHeight,
                                    x: rect.left,
                                    y: rect.top,
                                    height: rect.bottom - rect.top,
                                    width: rect.right - rect.left,
                                };
                            }, selector)
                                .then(function (rect) {
                                return _this.nightmare
                                    .viewport(rect.bodyWidth, rect.bodyHeight)
                                    .screenshot(outputFilePath, rect);
                            })];
                    case 2:
                        _a.sent();
                        return [2 /*return*/];
                }
            });
        });
    };
    return ChartRenderer;
}());
exports.ChartRenderer = ChartRenderer;
//# sourceMappingURL=render-chart.js.map