const express = require('express');
const router = express.Router();
const rt = require('../ResTool');
const config = require('../../config.json');
const fs = require('fs');
const mysql = require('../../libs/mysql_pool');
const tool = require('../../includes/apiTool');
const exec = require('child_process').exec;
const so = require('../../includes/storeObject');
const crypt = require('../../libs/crypto');
const path = require('path');

router
    .get('/', (req, res, n) => {
        res.send({ name: 'WebIO IPCam API' });
    })
    .post('*', async(req, res, n) => {
        try {
            res.db = await mysql.getConn();
        } catch (e) {
            console.log(`Get DB Connection ERROR ${e}`);
            return n('ERR8100');
        }
        n();
    })
    .post('/getipcamlist', (req, res, n) => {
        if (!config.permission.ipcam) return n('ERR9000');

        let query = "select * from ??.?? where `delete` = 0 order by `ctime`";
        let param = [config.db.db1, 'jcioccamset'];
        res.db.query(query, param, (err, row) => {
            if (err) return rt.err(res, err, n, 'ERR8000');

            res.api_res = {
                record: tool.checkArray(row)
            }

            n();
        });
    })
    .post('/addipcam', (req, res, n) => {
        if (!config.permission.ipcam) return n('ERR9000');
        if (!tool.checkPermission(req)) return n('ERR9000');
        let arr = req.body;
        if (!arr.data) return n('ERR0000');
        if (!arr.data.ip) return n("ERR0010");
        if (!arr.data.name) return n('ERR0026');
        if (!arr.data.model) return n('ERR0067');
        if (!arr.data.maxevents) return n('ERR0068');
        if (!arr.data.maximg) return n('ERR0069');
        if (!/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.test(arr.data.ip)) return n('ERR0025');

        let u = '';
        let obj = so.get(req.headers['x-auth-token'] || '');
        if (obj != null && 'user' in obj && 'account' in obj.user) u = obj.user.account;

        let active = arr.data.active == 1 ? 1 : 0;

        !async function runSync() {
            // data flag 0 is insert, 1 is update
            let flag = 0;
            let idx = 1;
            // query db data 
            try {
                let query = "select `uid` from ??.?? order by `uid` desc limit 1";
                let param = [config.db.db1, 'jcioccamset'];
                let id = await tool.promiseQuery(res, query, param);

                if (id.data.length > 0 && id.data[0].uid) idx = id.data[0].uid + 1;
                if (idx > config.ipcam_limit) {
                    query = "select `uid` from ??.?? where `delete` = 1 limit 1";
                    flag = 1;
                    let id = await tool.promiseQuery(res, query, param);
                    if (id.data.length > 0 && id.data[0].uid) idx = id.data[0].uid;
                    else return n('ERR0070');
                }

                query = "select count(*) as c from ??.?? where `ip` = ?";
                param = [config.db.db1, 'jcioccamset', arr.data.ip];
                let count = await tool.promiseQuery(res, query, param);
                if (count.data.length == 0) return n('ERR8000');
                if (count.data[0].c >= 1) return n('ERR0027');
            } catch (e) {
                return rt.err(res, e, n, 'ERR8000');
            }
            if (flag == 1) {
                try {
                    let query = "update ??.?? set \
                        `ip` = ?, \
                        `name` = ?, \
                        `model` = ?, \
                        `maxevents` = ?, \
                        `maximg` = ?, \
                        `active` = ?, \
                        `delete` = 0, \
                        `cuser` = ?, \
                        `ctime` = unix_timestamp(), \
                        `muser` = ?, \
                        `mtime` = unix_timestamp() \
                        where \
                        `uid` = ?";
                    let param = [config.db.db1, 'jcioccamset', arr.data.ip, arr.data.name, arr.data.model, arr.data.maxevents, arr.data.maximg, active, u, u, idx];
                    await tool.promiseQuery(res, query, param);
                } catch (e) {
                    return rt.err(res, e, n, 'ERR8002');
                }
            } else {
                try {
                    let query = "insert into ??.?? (`uid`, `ip`, `name`, `model`, `maxevents`, `maximg`, `active`, `cuser`, `muser`, `ctime`, `mtime` ) \
                        values (?, ?, ?, ?, ?, ?, ?, ?, ?, unix_timestamp(), unix_timestamp())";
                    let param = [config.db.db1, 'jcioccamset', idx, arr.data.ip, arr.data.name, arr.data.model, arr.data.maxevents, arr.data.maximg, active, u, u];
                    await tool.promiseQuery(res, query, param);
                } catch (e) {
                    return rt.err(res, e, n, 'ERR8001');
                }
            }

            res.api_res = {
                record: []
            }
            return n();
        }()

    })
    .post('/editipcam', (req, res, n) => {
        if (!config.permission.ipcam) return n('ERR9000');
        if (!tool.checkPermission(req)) return n('ERR9000');
        let arr = req.body;
        if (!arr.data) return n('ERR0000');
        if (!arr.data.id) return n('ERR0028');
        if (!arr.data.ip) return n("ERR0010");
        if (!arr.data.name) return n('ERR0026');
        if (!arr.data.model) return n('ERR0067');
        if (!arr.data.maxevents) return n('ERR0068');
        if (!arr.data.maximg) return n('ERR0069');
        if (!/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.test(arr.data.ip)) return n('ERR0025');

        let u = '';
        let obj = so.get(req.headers['x-auth-token'] || '');
        if (obj != null && 'user' in obj && 'account' in obj.user) u = obj.user.account;

        let active = arr.data.active == 1 ? 1 : 0;

        let query = "select count(*) as c from ??.?? where `ip` = ? and `uid` != ?";
        let param = [config.db.db1, 'jcioccamset', arr.data.ip, arr.data.id];

        res.db.query(query, param, (err, row) => {
            if (err || row.length == 0) return rt.err(res, err, n, 'ERR8000');

            if (row[0].c >= 1) return n('ERR0027');

            let query = "update ??.?? set \
                `ip` = ?, \
                `name` = ?, \
                `model` = ?, \
                `maxevents` = ?, \
                `maximg` = ?, \
                `active` = ?, \
                `muser` = ?, \
                `mtime` = unix_timestamp() \
                where \
                `uid` = ?";
            let param = [config.db.db1, 'jcioccamset', arr.data.ip, arr.data.name, arr.data.model, arr.data.maxevents, arr.data.maximg, active, u, arr.data.id];
            res.db.query(query, param, (err, row) => {
                if (err) return rt.err(res, err, n, 'ERR8002');

                res.api_res = {
                    record: []
                }
                n();
            })
        });
    })
    .post('/delipcam', (req, res, n) => {
        if (!config.permission.ipcam) return n('ERR9000');
        if (!tool.checkPermission(req)) return n('ERR9000');
        let arr = req.body;
        if (!arr.data) return n('ERR0000');
        if (!arr.data.id) return n('ERR0028');

        let u = '';
        let obj = so.get(req.headers['x-auth-token'] || '');
        if (obj != null && 'user' in obj && 'account' in obj.user) u = obj.user.account;

        res.db.query(`use ${config.db.db1}`);
        let query = "update ??.?? set \
            `delete` = 1, \
            `muser` = ?, \
            `mtime` = unix_timestamp() \
            where `uid` = ?";
        let param = [config.db.db1, 'jcioccamset', u, arr.data.id];

        res.db.query(query, param, (err, row) => {
            if (err) return rt.err(res, err, n, 'ERR8003');

            res.api_res = {
                record: []
            }
            n();
        })
    })
    .post('/swipcamactive', (req, res, n) => {
        if (!config.permission.ipcam) return n('ERR9000');
        if (!tool.checkPermission(req)) return n('ERR9000');
        let arr = req.body;
        if (!arr.data) return n('ERR0000');
        if (!arr.data.id) return n('ERR0028');

        let query = "update ??.?? set \
            `active` = case when `active` = 1 then 0 else 1 end \
            where \
            `uid` = ?";
        let param = [config.db.db1, 'jcioccamset', arr.data.id];

        res.db.query(query, param, (err, row) => {
            if (err) return rt.err(res, err, n, 'ERR8002');

            res.api_res = {
                record: []
            }
            n();
        })
    })
    .post('/getevents', async(req, res, n) => {
        if (!config.permission.ipcam) return n('ERR9000');
        if (!tool.checkPermission(req)) return n('ERR9000');
        let arr = req.body;
        if (!arr.data) return n('ERR0000');
        if (!arr.data.id) return n('ERR0028');

        try {
            let query = "select * from ??.?? where `uid` = ? and `delete` = 0";
            let param = [config.db.db1, 'jcioccamset', arr.data.id];
            let cam = await tool.promiseQuery(res, query, param);
            if (cam.length == 0) return n('ERR0071');
        } catch (e) {
            return rt.err(res, e, n, 'ERR8000');
        }
        let rp = config.cmdpath.ipcamsave;
        let dirs = [];

        try {
            let dirls = await new Promise((resolve, reject) => {
                fs.readdir(rp, (err, list) => {
                    if (err) return reject(err);
                    return resolve(list);
                })
            })
            for (let i of dirls) {
                let tmp = i.split('-');
                if (tmp.length != 2) continue;
                if (tmp[0] == arr.data.id) dirs.push({
                    name: i,
                    files: {
                        img: [],
                        video: []
                    }
                });
            }

            for (let i in dirs) {
                let p = path.resolve(rp, dirs[i].name);
                let idx = i;
                let files = await new Promise((resolve, reject) => {
                    fs.readdir(p, (err, list) => {
                        if (err) return reject(err);
                        return resolve(list);
                    })
                })
                for (let j of files) {
                    if (/^img/.test(j)) {
                        dirs[idx].files.img.push(j);
                    } else if (/^vid/.test(j)) {
                        dirs[idx].files.video.push(j);
                    }
                }
            }

        } catch (e) {
            return rt.err(res, e, n, 'ERR0072');
        }

        res.api_res = {
            record: tool.checkArray(dirs)
        }
        return n();
    })
    .post('/delevent', async(req, res, n) => {
        if (!config.permission.ipcam) return n('ERR9000');
        if (!tool.checkPermission(req)) return n('ERR9000');
        let arr = req.body;
        if (!arr.data) return n('ERR0000');
        if (!arr.data.dir) return n('ERR0073');

        let rp = config.cmdpath.ipcamsave;
        let dp = path.resolve(rp, arr.data.dir);
        try {
            let stat = await new Promise((resolve, reject) => {
                fs.stat(dp, (err, stats) => {
                    if (err) return reject(err);
                    return resolve(stats);
                });
            });
            if (dp.split(' ')[0] == '/') return n('ERR0073');
            await new Promise((resolve, reject) => {
                exec(`rm -rf ${dp}`, (err, sout, serr) => {
                    if (err) return reject(err);
                    return resolve(null);
                })
            })
        } catch (e) {
            return rt.err(res, e, n, 'ERR0072');
        }

        res.api_res = {
            record: []
        }
        return n();
    })
    .all('*', rt.send);

module.exports = router;