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server.js
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server.js
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"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 = 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 };
}
};
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
result["default"] = mod;
return result;
};
var _this = this;
Object.defineProperty(exports, "__esModule", { value: true });
// @ts-ignore
var crawler_1 = require("crawler");
var cron_1 = require("cron");
var mongodb = __importStar(require("mongodb"));
function initDB(db) {
return __awaiter(this, void 0, void 0, function () {
var e_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, db.createCollection("cars")];
case 1:
_a.sent();
return [3 /*break*/, 3];
case 2:
e_1 = _a.sent();
console.error(e_1);
return [3 /*break*/, 3];
case 3: return [2 /*return*/];
}
});
});
}
function crawl(db) {
return __awaiter(this, void 0, void 0, function () {
var _a, _b, _i, site, e_2;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
_c.trys.push([0, 5, , 6]);
_a = [];
for (_b in crawler_1.sites)
_a.push(_b);
_i = 0;
_c.label = 1;
case 1:
if (!(_i < _a.length)) return [3 /*break*/, 4];
site = _a[_i];
if (!(site === "cars")) return [3 /*break*/, 3];
return [4 /*yield*/, crawler_1.main(db, "cars", crawler_1.sites[site])];
case 2:
_c.sent();
_c.label = 3;
case 3:
_i++;
return [3 /*break*/, 1];
case 4: return [3 /*break*/, 6];
case 5:
e_2 = _c.sent();
console.error(e_2);
return [3 /*break*/, 6];
case 6: return [2 /*return*/];
}
});
});
}
(function () { return __awaiter(_this, void 0, void 0, function () {
var express, cors, bodyParser, logger, API_PORT_1, app_1, router, dbRoute, client, dbName, db_1, cars_1, e_3;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 5, , 6]);
express = require("express");
cors = require("cors");
bodyParser = require("body-parser");
logger = require("morgan");
API_PORT_1 = process.env.SERVER_PORT || process.env.npm_config_server_port || "3001";
app_1 = express();
app_1.use(cors());
router = express.Router();
dbRoute = "mongodb:https://" + process.env.MONGO_USER + ":" + process.env.MONGO_PASS + "@" + process.env.DB_HOST + ":27017";
if (process.env.MONGO_CONN !== undefined) {
dbRoute = process.env.MONGO_CONN;
}
else if (process.env.npm_package_config_db !== undefined) {
dbRoute = process.env.npm_package_config_db;
}
console.log(dbRoute);
return [4 /*yield*/, mongodb.connect(dbRoute, { useNewUrlParser: true })];
case 1:
client = _a.sent();
dbName = dbRoute.match(/(\/)(.[^\/]*$)/)[2];
return [4 /*yield*/, client.db(dbName)];
case 2:
db_1 = _a.sent();
return [4 /*yield*/, initDB(db_1)];
case 3:
_a.sent();
console.debug("Registering cronjob...");
new cron_1.CronJob("0 * * * *", function () {
console.log("Triggering crawler");
crawl(db_1);
}, null, true, undefined, undefined, true);
console.debug("Job registered.");
return [4 /*yield*/, db_1.collection("cars")];
case 4:
cars_1 = _a.sent();
// (optional) only made for logging and
// bodyParser, parses the request body to be a readable json format
app_1.use(bodyParser.urlencoded({ extended: false }));
app_1.use(bodyParser.json());
app_1.use(logger("dev"));
// this is our create method
// this method adds new data in our database
router.post("/putData", function (req, res) { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
try {
cars_1.insertOne(req.body);
return [2 /*return*/, res.json({ success: true })];
}
catch (err) {
return [2 /*return*/, res.json({ success: false, error: err })];
}
return [2 /*return*/];
});
}); });
// this is our get method
// this method fetches all available data in our database
router.get("/getData", function (req, res) { return __awaiter(_this, void 0, void 0, function () {
var data, err_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, cars_1.aggregate([{ $project: { _id: 0 } }]).toArray()];
case 1:
data = _a.sent();
// return res.json({ success: true, data: { aaData: data } });
return [2 /*return*/, res.json({ success: true, data: data })];
case 2:
err_1 = _a.sent();
return [2 /*return*/, res.json({ success: false, error: err_1 })];
case 3: return [2 /*return*/];
}
});
}); });
router.get("/crawl", function (req, res) { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
crawl(db_1);
return [2 /*return*/, res.json({ success: true, message: "Crawler started." })];
});
}); });
// append /api for our http requests
app_1.use("/api", router);
// launch our backend into a port
app_1.listen(API_PORT_1, function () { return console.log("LISTENING ON PORT " + API_PORT_1); });
return [3 /*break*/, 6];
case 5:
e_3 = _a.sent();
console.error(e_3);
return [3 /*break*/, 6];
case 6: return [2 /*return*/];
}
});
}); })();