package entity

import (
	"github.com/google/uuid"
	"time"
)

type License struct {
	ID           uuid.UUID  `gorm:"type:uuid;primaryKey;default:uuid_generate_v4()"`
	PartnerID    int64      `gorm:"type:bigint;not null"`
	Name         string     `gorm:"type:varchar(255);not null"`
	StartDate    time.Time  `gorm:"type:date;not null"`
	EndDate      time.Time  `gorm:"type:date;not null"`
	RenewalDate  *time.Time `gorm:"type:date"`
	SerialNumber string     `gorm:"type:varchar(255);unique;not null"`
	CreatedBy    int64      `gorm:"type:bigint;not null"`
	UpdatedBy    int64      `gorm:"type:bigint;not null"`
	CreatedAt    time.Time  `gorm:"autoCreateTime"`
	UpdatedAt    time.Time  `gorm:"autoUpdateTime"`
}

type LicenseGetAll struct {
	ID            uuid.UUID  `gorm:"type:uuid;primaryKey;default:uuid_generate_v4()"`
	PartnerID     int64      `gorm:"type:bigint;not null"`
	Name          string     `gorm:"type:varchar(255);not null"`
	StartDate     time.Time  `gorm:"type:date;not null"`
	EndDate       time.Time  `gorm:"type:date;not null"`
	RenewalDate   *time.Time `gorm:"type:date"`
	SerialNumber  string     `gorm:"type:varchar(255);unique;not null"`
	CreatedBy     int64      `gorm:"type:bigint;not null"`
	UpdatedBy     int64      `gorm:"type:bigint;not null"`
	CreatedAt     time.Time  `gorm:"autoCreateTime"`
	UpdatedAt     time.Time  `gorm:"autoUpdateTime"`
	PartnerName   string     `gorm:"type:varchar(255);not null"`
	LicenseStatus string     `gorm:"type:string(255);not null"`
	CreatedByName string     `gorm:"type:string(255);not null"`
	DaysToExpire  int64      `gorm:"type:bigint"`
}

func (License) TableName() string {
	return "licenses"
}

type LicenseDB struct {
	License
}

func (l *License) ToLicenseDB() *LicenseDB {
	return &LicenseDB{
		License: *l,
	}
}

func (LicenseDB) TableName() string {
	return "licenses"
}

func (e *LicenseDB) ToLicense() *License {
	return &License{
		ID:           e.ID,
		PartnerID:    e.PartnerID,
		Name:         e.Name,
		StartDate:    e.StartDate,
		EndDate:      e.EndDate,
		RenewalDate:  e.RenewalDate,
		SerialNumber: e.SerialNumber,
		CreatedBy:    e.CreatedBy,
		UpdatedBy:    e.UpdatedBy,
		CreatedAt:    e.CreatedAt,
		UpdatedAt:    e.UpdatedAt,
	}
}

func (o *LicenseDB) ToUpdatedLicense(updatedBy int64, req License) {
	o.UpdatedBy = updatedBy

	if req.Name != "" {
		o.Name = req.Name
	}

	if !req.StartDate.IsZero() {
		o.StartDate = req.StartDate
	}

	if !req.EndDate.IsZero() {
		o.EndDate = req.EndDate
	}

	if req.RenewalDate != nil {
		o.RenewalDate = req.RenewalDate
	}

	if req.SerialNumber != "" {
		o.SerialNumber = req.SerialNumber
	}
}

type PartnerLicense struct {
	PartnerID     int64  `json:"partner_id"`
	LicenseStatus string `json:"license_status"`
	DaysToExpire  int64  `json:"days_to_expire"`
}

func (l *LicenseDB) ToPartnerLicense() PartnerLicense {
	// Define the GMT+7 timezone
	location, err := time.LoadLocation("Asia/Jakarta")
	if err != nil {
		// Handle the error appropriately, but for simplicity, we'll default to UTC
		location = time.FixedZone("GMT+7", 7*60*60)
	}

	// Reinterpret StartDate as GMT+7 without changing the actual time values
	startDateInGMT7 := time.Date(
		l.StartDate.Year(),
		l.StartDate.Month(),
		l.StartDate.Day(),
		l.StartDate.Hour(),
		l.StartDate.Minute(),
		l.StartDate.Second(),
		l.StartDate.Nanosecond(),
		location,
	)

	// Convert EndDate similarly, if needed
	endDateInGMT7 := time.Date(
		l.EndDate.Year(),
		l.EndDate.Month(),
		l.EndDate.Day(),
		l.EndDate.Hour(),
		l.EndDate.Minute(),
		l.EndDate.Second(),
		l.EndDate.Nanosecond(),
		location,
	)

	now := time.Now().In(location)
	startOfDay := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())

	daysToExpire := int64(endDateInGMT7.Sub(startOfDay).Hours() / 24)
	var licenseStatus string

	if startDateInGMT7.After(startOfDay) {
		licenseStatus = "INACTIVE"
	} else if startDateInGMT7.Equal(startOfDay) || (startDateInGMT7.Before(startOfDay) && endDateInGMT7.After(startOfDay)) {
		if daysToExpire < 0 {
			licenseStatus = "EXPIRED"
		} else if daysToExpire <= 30 {
			licenseStatus = "EXPIRING_SOON"
		} else {
			licenseStatus = "ACTIVE"
		}
	} else if endDateInGMT7.Before(startOfDay) {
		licenseStatus = "EXPIRED"
	} else {
		licenseStatus = "ACTIVE"
	}

	return PartnerLicense{
		PartnerID:     l.PartnerID,
		DaysToExpire:  daysToExpire,
		LicenseStatus: licenseStatus,
	}
}