var express = require('express')
var router = express.Router()

const DB = require("../mongoDB.js");
const Song = require("../def/songs.js");

DB.getDB.then((DB)=>{

    const getUserId = function(req){
        const user_sid = req.cookies.user_sid || req.query.user_sid || req.body.user_sid;
        return DB.ObjectID(user_sid);
    }

    const getProfileId = (req)=>{
        return DB.ObjectID(req.cookies.profile_id || req.query.profile_id || req.body.profile_id);
    }

    /**
 * @swagger
 * tags:
 *   name: Songs
 *   description: Song management
 */

/**
 * @swagger
 * /songs:
 *   get:
 *     summary: Get all songs
 *     tags: [Songs]
 *     security:
 *       - cookieAuth: []
 *     responses:
 *       200:
 *         description: OK
 */
    router.get("/", async (req, res) => {
        let profileId = req.params.id;
        let songs = await DB.getSongs();
        return res.json({
            status: "ok",
            songs
        });
    });

    /**
 * @swagger
 * /songs:
 *   post:
 *     summary: Create a new song
 *     tags: [Songs]
 *     security:
 *       - cookieAuth: []
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *     responses:
 *       200:
 *         description: OK
 */
    router.post("/", async (req, res) => {
        let post = {
            userid: getUserId(req),
            ...req.body
        }
        let postObj = new Song(post);
        let dbr = await DB.newSong(postObj);
        song = postObj.toObj();
        song._id = dbr.insertedId;
        return res.json({
            status: "ok",
            ...song
        })
    });

    /**
 * @swagger
 * /songs/{id}:
 *   get:
 *     summary: Get a specific song by ID
 *     tags: [Songs]
 *     security:
 *       - cookieAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: string
 *     responses:
 *       200:
 *         description: OK
 */
    router.get("/:id", async (req, res) => {
        let profileId = req.params.id;
        let profile = await DB.getProfile(profileId);
        return res.json({
            status: "ok",
            ... profile
        });
    });

    async function songBelongsToUser(songId, userid){
        // TODO: Verify ownserhip
        return true;
    }

    /**
 * @swagger
 * /songs/{id}:
 *   delete:
 *     summary: Delete a song
 *     tags: [Songs]
 *     security:
 *       - cookieAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: string
 *     responses:
 *       200:
 *         description: OK
 */
    router.delete("/:id", async (req, res) => {
        const userid = getUserId(req);
        const songId = req.params.id;
        if(!await songBelongsToUser(songId, userid)) 
            return res.json({
                status: "This profile is not yours."
            });
        await DB.removeSong(songId);
        return res.json({
            status: "ok"
        });
    });

    /**
 * @swagger
 * /songs/{id}:
 *   post:
 *     summary: Update a song
 *     tags: [Songs]
 *     security:
 *       - cookieAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: string
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             properties:
 *               content:
 *                 type: string
 *     responses:
 *       200:
 *         description: OK
 */
    router.post("/:id", async (req, res) => {
        const userid = getUserId(req);
        const songId = req.params.id;
        const song = await DB.getSong(songId);
        const newContent = req.body.content;
        console.log("Updating song", newContent)
        if(!await songBelongsToUser(songId, userid))
            return res.json({
                status: "This post is not yours."
            });
        await DB.updateSongContent(songId, newContent, song.content);
        return res.json({
            status: "ok"
        });
    });

});

module.exports = router