/*
Author : Enrique Blasco BLanquer
Date: 28 de mayo de 2019
*/
module.exports = Self => {
    Self.remoteMethodCtx('getHoursWorked', {
        description: 'Get worked hours in current week, month and year',
        accessType: 'WRITE',
        returns: [{
            type: 'Object',
            root: true
        }],
        http: {
            path: `/getHoursWorked`,
            verb: 'GET'
        }
    });

    Self.getHoursWorked = async(ctx, data) => {
        let totalHours = 0; // total hours worked in one year
        let totalMinutes = 0; // total minutes worked in one year
        let totalHoursMonth = 0; // total hours worked in one month
        let totalMinutesMonth = 0; // total minutes worked in one month
        let totalHoursWeek = 0; // total hours worked in one week
        let totalMinutesWeek = 0; // total minutes worked in one week
        const myUserId = ctx.req.accessToken.userId; // user id
        let today = new Date(); // needed to calculate total hours worked to current date
        let fromDate = today.getFullYear() + '-01-01'; // from date, current year
        let toDate = today.getFullYear() + '-12-31'; // to date, current year


        // 1  hours worked in a year
        let hoursYear = await Self.rawSql(`SELECT  wtc.userFk, DATE(wtc.timed) dated,  
                                                    UNIX_TIMESTAMP(MIN(timed))timedStart,  
                                                    SEC_TO_TIME(SUM(if( mod(wtc.order,2)=1, 
                                                    UNIX_TIMESTAMP(timed) *-1, 
                                                    UNIX_TIMESTAMP(timed)))) timeWorkDay 
                                           FROM vn.workerTimeControl wtc 
                                           WHERE wtc.timed BETWEEN ? AND ? AND userFk = ? 
                                           GROUP BY wtc.userFk,dated ORDER BY dated DESC`, [fromDate, toDate, myUserId]);


        // 2 Get days of week
        let week = [];
        // Starting Monday not Sunday
        let current = new Date();
        current.setDate((current.getDate() - current.getDay() + 1));
        for (let i = 0; i < 7; i++) {
            week.push(
                new Date(current)
            );
            current.setDate(current.getDate() + 1);
        }

        // 3 I have all timed control for one year... NOW I CALCULATE  TOTAL HOURS IN YEAR, MONTH, WEEK, Let's GO!
        for (hour of hoursYear) {
            if (parseInt(hour.timeWorkDay.split(':')[0]) > 0) {
                // YEAR
                totalHours += parseInt(hour.timeWorkDay.split(':')[0]);
                totalMinutes += parseInt(hour.timeWorkDay.split(':')[1]);
                // If it exceeds 5 hours we add 20 minutes of breakfast.
                if (parseInt(hour.timeWorkDay.split(':')[0]) >= 5)
                    totalMinutes += 20;
                // MONTH

                if ((new Date(hour.dated)).getMonth() == today.getMonth()) {
                    totalHoursMonth += parseInt(hour.timeWorkDay.split(':')[0]);
                    totalMinutesMonth += parseInt(hour.timeWorkDay.split(':')[1]);
                    // If it exceeds 5 hours we add 20 minutes of breakfast.
                    if (parseInt(hour.timeWorkDay.split(':')[0]) >= 5)
                        totalMinutesMonth += 20;
                }
                // WEEK
                for (day of week) {
                    let dayOfWeek = new Date(day);
                    let dayOfCurrentWeek = new Date(hour.dated);
                    if (dayOfWeek.getMonth() == dayOfCurrentWeek.getMonth() && dayOfWeek.getDate() == dayOfCurrentWeek.getDate()) {
                        totalHoursWeek += parseInt(hour.timeWorkDay.split(':')[0]);
                        totalMinutesWeek += parseInt(hour.timeWorkDay.split(':')[1]);
                        // If it exceeds 5 hours we add 20 minutes of breakfast.
                        if (parseInt(hour.timeWorkDay.split(':')[0]) >= 5)
                            totalMinutesWeek += 20;
                        break;
                    }
                }
            }
        }

        // TOTAL WORKED HOURS IN THE YEAR
        totalHours += totalMinutes / 60;
        totalHours = decimalToHour(totalHours);

        // TOTAL WORKED HOURS IN THE MONTH
        totalHoursMonth += totalMinutesMonth / 60;
        totalHoursMonth = decimalToHour(totalHoursMonth);

        // TOTAL WORKED HOURS IN THE WEEK
        totalHoursWeek += totalMinutesWeek / 60;
        totalHoursWeek = decimalToHour(totalHoursWeek);

        return {
            'totalWorekdYear': totalHours,
            'totalWorekdMonth': totalHoursMonth,
            'totalWorkedWeek': totalHoursWeek
        };
    };
};

/*
function to calculate hours and minutes from decimal value
*/
function decimalToHour(value) {
    let decimalTime = parseFloat(value);
    decimalTime = decimalTime * 60 * 60;
    let hoursDay = Math.floor((decimalTime / (60 * 60)));
    decimalTime = decimalTime - (hoursDay * 60 * 60);
    let minutesDay = Math.floor((decimalTime / 60));
    return hoursDay + ':' + minutesDay;
}