const db = require("../config/db");

class HistoryEntranceService {
    getHistoryEntrance(entrance_id) {
        return new Promise((res, rej) => {
            let sql = `
                SELECT 
                    *
                FROM 
                    entrance_history
                WHERE 
                    entrance_history.entrance_id = '${entrance_id}'
                ORDER BY 
                    entrance_history.date_start
            `;

            db.all(sql, (err, rows) => {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else {
                    let data = rows.map((row) => {
                        return {
                            "id": Number(row.id),
                            "entrance_id": Number(row.entrance_id),
                            "name": row.name,
                            "group_id": Number(row.group_id),
                            "sheep_id": Number(row.sheep_id),
                            "working": Number(row.working) == 0 ? false : true,
                            "date": {
                               "start": Number(row.date_start),
                               "end": row.date_end ? Number(row.date_end) : null
                            }
                        }                
                    })

                    return res(data);
                }
            });
        });
    }

    createHistoryEntrance(entrance_id, data) {
        return new Promise((res, rej) => {
            let sql = 'INSERT INTO entrance_history(entrance_id, name, date_start, group_id, sheep_id, working) VALUES (?, ?, ?, ?, ?, ?)';
            
            db.run(sql, [
                entrance_id,
                data.name,
                Math.floor(new Date(Date.now()).getTime()),
                Number(data.group_id),
                Number(data.sheep_id),
                1
            ], function(err) {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else if (this.changes === 0) {
                    return res(false);
                } else {
                    res({ "create": "ok", "id": this.lastID });
                }
            });
        });
    }

    updateHistoryEntrance(entrance_id) {
        return new Promise((res, rej) => {
            console.log(Number(entrance_id));
            
            let sql = 'UPDATE entrance_history SET date_end = ?, working = ? WHERE id = ?';
            db.run(sql, [
                Math.floor(new Date(Date.now()).getTime()),
                0,
                Number(entrance_id)
            ], function(err) {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else if (this.changes === 0) {
                    return res(false);
                } else {                    
                    res({ "update": "ok", "id": entrance_id });
                }
            });
        });
    }

    deleteHistoryEntrance(entrance_id) {
        return new Promise((res, rej) => {
            db.run('DELETE FROM entrance_history WHERE id = ?', [Number(entrance_id)], function(err) {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else if (this.changes === 0) {
                    return res(false);
                } else {
                    res({ "delete": "ok", "id": entrance_id });
                }
            });
        });
    }
}

module.exports = new HistoryEntranceService();