const express = require("express");
const bodyParser = require("body-parser");
const path = require("path");
const morgan = require("morgan");
const dbConnection = require("./util/dbConnection");
const fs = require("fs");
const cors = require("cors");
require('dotenv').config()

// credentials
const port = process.env.PORT

// Router
const search = require("./routes/search");
const regions = require("./routes/regions");
const countries = require("./routes/countries");
const climate = require("./routes/climate");
const places = require("./routes/place");
const update = require("./routes/update");

const app = express();

const swaggerJsdoc = require('swagger-jsdoc');
const swaggerUi = require('swagger-ui-express');

// Swagger set up
const swaggerOptions = {
    swaggerDefinition: {
        openapi: "3.0.0",
        info: {
            title: "TravOpti API",
            version: "1.0.0",
            description:
                "Enable intrest controlled region searching with this API\n" +
                "No API Key required.",
            license: {
                name: "Licensing Pending",
                url: "https://www.youtube.com/watch?v=dQw4w9WgXcQ&feature=youtu.be"
            },
            contact: {
                name: "travOpti",
                url: "https://travopti.de/home",
                email: "feedback@travopti.de"
            }
        },
        servers: [
            {
                url: "http://localhost:3000/api/v1"
            },
            {
                url: "https://travopti.de/api/v1"
            }
        ]
    },
    apis: [
        "./Routes/*.js",
        "./Models/handleClimateUpdate.js",
        "./Models/handleClimateUpdateV2.js",
    ]
};

const swaggerDocs = swaggerJsdoc(swaggerOptions);

(async () => {
    try {
        const dbConn = await dbConnection();

        // Express middleware
        app.use(morgan("dev"));
        app.use(express.static(path.join(__dirname, "../../dist")));
        app.use(bodyParser.json());
        app.use(cors());
        app.use('/api/v1/doc', swaggerUi.serve, swaggerUi.setup(swaggerDocs, {explorer: true}));

        // Express routes
        app.use(search(dbConn));
        app.use(regions(dbConn));
        app.use(countries(dbConn));
        app.use(climate(dbConn));
        app.use(places(dbConn));
        app.use(update(dbConn))

        app.use((err, req, res, next) => {
            // 500
            if (true) {
                next();
            } else {
                res.status(500).send();
            }
        });

        // Start webserver
        app.listen(port, () => {
            console.log(`Travopti backend listening at http://localhost:${port}`)
        });
    } catch (error) {
        // TODO: logging
        console.error("Failed to start the webserver");
        console.error(error);
    }
})();