package model

import "time"

// WorkingHour represents a single day's working hours configuration for an inbox.
// Reference: Chatwoot app/models/working_hour.rb
//
// Each inbox has 7 WorkingHour records (day_of_week 0-6), one per day.
// Default: weekdays 9:00-17:00, weekends closed_all_day.
//
// Table: working_hours
type WorkingHour struct {
	ID            uint      `gorm:"primaryKey" json:"id"`
	InboxID       uint      `gorm:"not null;index" json:"inbox_id"`
	AccountID     uint      `gorm:"index" json:"account_id"`
	DayOfWeek     int       `gorm:"not null" json:"day_of_week"`                       // 0=Sunday, 1=Monday, ..., 6=Saturday
	ClosedAllDay  bool      `gorm:"default:false" json:"closed_all_day"`               // true → inbox closed entire day
	OpenAllDay    bool      `gorm:"default:false" json:"open_all_day"`                 // true → inbox open 24h
	OpenHour      *int      `gorm:"default:null" json:"open_hour"`                     // 0-23, nil when closed_all_day or open_all_day
	OpenMinutes   *int      `gorm:"default:null" json:"open_minutes"`                  // 0-59
	CloseHour     *int      `gorm:"default:null" json:"close_hour"`                    // 0-23
	CloseMinutes  *int      `gorm:"default:null" json:"close_minutes"`                 // 0-59
	CreatedAt     time.Time `json:"created_at"`
	UpdatedAt     time.Time `json:"updated_at"`
}

// TableName returns the GORM table name.
func (WorkingHour) TableName() string { return "working_hours" }

// Validate performs Chatwoot-equivalent validations:
//   - open_hour/close_hour must be 0-23 (unless closed_all_day)
//   - open_minutes/close_minutes must be 0-59 (unless closed_all_day)
//   - close time must be after open time (unless closed_all_day)
//   - open_all_day and closed_all_day cannot both be true
func (wh *WorkingHour) Validate() map[string]string {
	errors := make(map[string]string)

	// Chatwoot: open_all_day_and_closed_all_day validation
	if wh.OpenAllDay && wh.ClosedAllDay {
		errors["open_all_day"] = "cannot be true when closed_all_day is also true"
	}

	if wh.ClosedAllDay {
		return errors // no further validation needed
	}

	// Chatwoot: inclusion validations (0-23 for hours, 0-59 for minutes)
	if wh.OpenHour != nil {
		if *wh.OpenHour < 0 || *wh.OpenHour > 23 {
			errors["open_hour"] = "must be between 0 and 23"
		}
	} else if !wh.OpenAllDay {
		errors["open_hour"] = "is required when not closed_all_day or open_all_day"
	}

	if wh.CloseHour != nil {
		if *wh.CloseHour < 0 || *wh.CloseHour > 23 {
			errors["close_hour"] = "must be between 0 and 23"
		}
	} else if !wh.OpenAllDay {
		errors["close_hour"] = "is required when not closed_all_day or open_all_day"
	}

	if wh.OpenMinutes != nil {
		if *wh.OpenMinutes < 0 || *wh.OpenMinutes > 59 {
			errors["open_minutes"] = "must be between 0 and 59"
		}
	}

	if wh.CloseMinutes != nil {
		if *wh.CloseMinutes < 0 || *wh.CloseMinutes > 59 {
			errors["close_minutes"] = "must be between 0 and 59"
		}
	}

	// Chatwoot: close_after_open validation
	// close time must be strictly after open time
	if wh.OpenHour != nil && wh.CloseHour != nil && wh.OpenMinutes != nil && wh.CloseMinutes != nil {
		openTotal := *wh.OpenHour * 60 + *wh.OpenMinutes
		closeTotal := *wh.CloseHour * 60 + *wh.CloseMinutes
		if closeTotal <= openTotal {
			errors["close_hour"] = "close time must be after open time"
		}
	}

	return errors
}

// EnsureOpenAllDayHours fills open/close fields when open_all_day is true.
// Chatwoot: before_validation :ensure_open_all_day_hours
//   - When open_all_day: set open_hour=0, open_minutes=0, close_hour=23, close_minutes=59
func (wh *WorkingHour) EnsureOpenAllDayHours() {
	if wh.OpenAllDay {
		zero := 0
		fiftyNine := 59
		twentyThree := 23
		wh.OpenHour = &zero
		wh.OpenMinutes = &zero
		wh.CloseHour = &twentyThree
		wh.CloseMinutes = &fiftyNine
		wh.ClosedAllDay = false
	}
}