package models

import (
	"arbeitszeitmessung/helper"
	"log"
	"log/slog"
	"time"
)

type IWorkDay interface {
	Date() time.Time
	ToString() string
	Type() DayType
	IsWorkDay() bool
	IsKurzArbeit() bool
	GetDayProgress(User) int8
	RequiresAction() bool
	GetWorktime(User, WorktimeBase, bool) time.Duration
	GetPausetime(User, WorktimeBase, bool) time.Duration
	GetTimes(User, WorktimeBase, bool) (work, pause, overtime time.Duration)
	GetOvertime(User, WorktimeBase, bool) time.Duration
}

type DayType int

const (
	DayTypeWorkday DayType = 1
	DayTypeAbsence DayType = 2
	DayTypeHoliday DayType = 3
)

func GetDays(user User, tsFrom, tsTo time.Time, orderedForward bool) []IWorkDay {
	var allDays map[string]IWorkDay = make(map[string]IWorkDay)

	for _, day := range GetWorkDays(user, tsFrom, tsTo) {
		allDays[day.Date().Format(time.DateOnly)] = &day
	}
	absences, err := GetAbsencesByCardUID(user.CardUID, tsFrom, tsTo)
	if err != nil {
		log.Println("Error gettings absences for all Days!", err)
		return nil
	}
	holidays, err := GetHolidaysFromTo(tsFrom, tsTo)
	if err != nil {
		slog.Warn("Error getting holidays from DB!", slog.Any("Error", err))
	}
	for _, day := range absences {
		if helper.IsWeekend(day.Date()) {
			continue
		}
		// Absence should be integrated in workday
		switch {
		case day.AbwesenheitTyp.WorkTime < 0:
			if workDay, ok := allDays[day.Date().Format(time.DateOnly)].(*WorkDay); ok {
				workDay.kurzArbeit = true
				workDay.kurzArbeitAbsence = day
			}
		case day.AbwesenheitTyp.WorkTime < 100:
			if workDay, ok := allDays[day.Date().Format(time.DateOnly)].(*WorkDay); ok {
				workDay.worktimeAbsece = day
			}
		default:
			allDays[day.Date().Format(time.DateOnly)] = &day
		}
	}

	for _, day := range holidays {
		if helper.IsWeekend(day.Date()) {
			continue
		}
		allDays[day.Date().Format(time.DateOnly)] = &day
		slog.Debug("Logging Holiday: ", slog.String("HolidayName", allDays[day.Date().Format(time.DateOnly)].ToString()), slog.Any("Overtime", day.GetOvertime(user, WorktimeBaseDay, false).String()), "wokrtie", float32(day.worktime)/100)
	}

	sortedDays := sortDays(allDays, orderedForward)
	return sortedDays
}