package users

import (
	"time"

	"github.com/google/uuid"
	"gorm.io/gorm"
)

// BeforeCreate will set a UUID rather than numeric ID.
func (base *User) BeforeCreate(tx *gorm.DB) error {
	if base.ID == "" {
		id, err := uuid.NewRandom()
		if err != nil {
			return err
		}
		base.ID = id.String()
	}
	return nil
}

type User struct {
	ID          string           `json:"id" gorm:"type:uuid;primary_key;"`
	Email       string           `json:"email" gorm:"uniqueIndex;size:255"`
	Name        string           `json:"name" gorm:"size:255"`
	Password    string           `json:"-" gorm:"size:255"`
	Permission  string           `json:"permission"`
	Type        UserType         `json:"type"`
	Status      UserStatus       `json:"status" gorm:"type:text;default:'pending'"`
	Details     *UserDetails     `json:"details" gorm:"constraint:OnUpdate:CASCADE,OnDelete:SET NULL;"`
	Preferences *UserPreferences `json:"preferences" gorm:"constraint:OnUpdate:CASCADE,OnDelete:SET NULL;"`
	Avatar      *string          `json:"avatar" gorm:"size:512"`
	ActivatedAt *time.Time       `json:"activatedAt" ts:"type=Nullable<Date>"`
	CreatedAt   *time.Time       `json:"createdAt,omitempty" ts:"type=Date"`
	UpdatedAt   *time.Time       `json:"updatedAt,omitempty" ts:"type=Date"`
	DeletedAt   *gorm.DeletedAt  `json:"-" gorm:"index" `
}

type UpdateUserProfileRequest struct {
	ID         string     `json:"id"`
	Email      string     `json:"email"`
	Name       string     `json:"name"`
	Permission string     `json:"permission"`
	Type       UserType   `json:"type"`
	Status     UserStatus `json:"status"`
}

type UpdateUserAvatarRequest struct {
	ID  string `json:"id" validate:"required,uuid4"`
	Img []byte `json:"img"`
}

// UserPreferences holds per-user settings stored as JSON.

type UserPreferences struct {
	ID               int        `json:"id" gorm:"primaryKey"`
	UserID           string     `json:"userId" gorm:"type:uuid;column:user_foreign_key;not null;"`
	UseIdle          bool       `json:"useIdle"`
	IdleTimeout      int        `json:"idleTimeout"`
	UseIdlePassword  bool       `json:"useIdlePassword"`
	IdlePin          string     `json:"idlePin"`
	UseDirectLogin   bool       `json:"useDirectLogin"`
	UseQuadcodeLogin bool       `json:"useQuadcodeLogin"`
	SendNoticesMail  bool       `json:"sendNoticesMail"`
	Language         string     `json:"language"`
	CreatedAt        *time.Time `json:"createdAt,omitempty" ts:"type=Date"`
	UpdatedAt        *time.Time `json:"updatedAt,omitempty" ts:"type=Date"`
}

type UpdateUserPreferencesRequest struct {
	ID               int    `json:"id"`
	UserID           string `json:"userId"`
	UseIdle          bool   `json:"useIdle"`
	IdleTimeout      int    `json:"idleTimeout"`
	UseIdlePassword  bool   `json:"useIdlePassword"`
	IdlePin          string `json:"idlePin"`
	UseDirectLogin   bool   `json:"useDirectLogin"`
	UseQuadcodeLogin bool   `json:"useQuadcodeLogin"`
	SendNoticesMail  bool   `json:"sendNoticesMail"`
	Language         string `json:"language"`
}

// UserDetails holds optional profile data.

type UserDetails struct {
	ID        int        `json:"id" gorm:"primaryKey"`
	UserID    string     `json:"userId" gorm:"type:uuid;column:user_foreign_key;not null;"`
	Title     string     `json:"title"`
	FirstName string     `json:"firstName"`
	LastName  string     `json:"lastName"`
	Address   string     `json:"address"`
	City      string     `json:"city"`
	ZipCode   string     `json:"zipCode"`
	Country   string     `json:"country"`
	Phone     string     `json:"phone"`
	CreatedAt *time.Time `json:"createdAt,omitempty" ts:"type=Date"`
	UpdatedAt *time.Time `json:"updatedAt,omitempty" ts:"type=Date"`
}

type UpdateUserDetailsRequest struct {
	ID        int    `json:"id"`
	UserID    string `json:"userId" gorm:"index"`
	Title     string `json:"title"`
	FirstName string `json:"firstName"`
	LastName  string `json:"lastName"`
	Address   string `json:"address"`
	City      string `json:"city"`
	ZipCode   string `json:"zipCode"`
	Country   string `json:"country"`
	Phone     string `json:"phone"`
}

// UserDetails holds optional profile data.

// Session tracks logins with browser metadata.

type Session struct {
	ID               int             `gorm:"primaryKey"`
	UserID           *string         `json:"userId" gorm:"index"`
	Username         string          `json:"username" gorm:"size:255"`
	AccessTokenHash  string          `json:"-" gorm:"size:128;index"`
	RefreshTokenHash string          `json:"-" gorm:"size:128;index"`
	ExpiresAt        time.Time       `json:"expiresAt" ts:"type=Nullable<Date>" gorm:"index"`
	IPAddress        string          `json:"ipAddress" gorm:"size:64"`
	UserAgent        string          `json:"userAgent" gorm:"size:512"`
	CreatedAt        time.Time       `json:"createdAt,omitempty" ts:"type=Date"`
	UpdatedAt        *time.Time      `json:"updatedAt,omitempty" ts:"type=Date"`
	DeletedAt        *gorm.DeletedAt `json:"-" gorm:"index" `
}

type PasswordResetToken struct {
	ID        int             `gorm:"primaryKey"`
	UserID    string          `json:"userId" gorm:"index"`
	TokenHash string          `json:"-" gorm:"size:64;uniqueIndex"`
	ExpiresAt time.Time       `json:"expiresAt,omitempty" ts:"type=Date" gorm:"index"`
	UsedAt    *time.Time      `json:"usedAt,omitempty" ts:"type=Date"`
	CreatedAt *time.Time      `json:"createdAt" ts:"type=Date"`
	UpdatedAt *time.Time      `json:"updatedAt,omitempty" ts:"type=Date"`
	DeletedAt *gorm.DeletedAt `json:"-" gorm:"index"`
}

// UserStatus represents lifecycle state of a user.
type UserStatus string

// Typescript: enum=UserStatus
const (
	UserStatusPending  UserStatus = "pending"
	UserStatusActive   UserStatus = "active"
	UserStatusDisabled UserStatus = "disabled"
)

// UserTypes represents different types of a user.
type UserType string

// Typescript: enum=UserTypes
const (
	UserTypeInternal UserType = "internal"
	UserTypeExternal UserType = "external"
	UserTypeSurveyor UserType = "surveyor"
)

type LoginRequest struct {
	Username string `json:"username" validate:"required,email"`
	Password string `json:"password" validate:"required,min=8,max=128"`
}

type RefreshRequest struct {
	RefreshToken string `json:"refresh_token"`
}

type ForgotPasswordRequest struct {
	Email string `json:"email" validate:"required,email"`
}

type ResetPasswordRequest struct {
	Token    string `json:"token" validate:"required,min=20,max=255"`
	Password string `json:"password" validate:"required,min=8,max=128"`
}

type UpdatePasswordRequest struct {
	ID       string `json:"id" validate:"required,uuid4"`
	Password string `json:"password" validate:"required,min=8,max=128"`
}

type UpdateUserRequest struct {
	ID         string     `json:"id" validate:"required,uuid4"`
	Name       string     `json:"name" validate:"required,min=1,max=255"`
	Email      string     `json:"email" validate:"required,email"`
	Password   string     `json:"password" validate:"omitempty,min=8,max=128"`
	Permission string     `json:"permission"`
	Status     UserStatus `json:"status"`
	Type       UserType   `json:"type"`
}

// UserCreateRequest captures the minimal payload to create a user.

type UserCreateRequest struct {
	Name        string           `json:"name" validate:"required,min=1,max=255"`
	Email       string           `json:"email" validate:"required,email"`
	Password    string           `json:"password" validate:"required,min=8,max=128"`
	Permission  string           `json:"permission"`
	Status      UserStatus       `json:"status"`
	Type        UserType         `json:"type"`
	Avatar      *string          `json:"avatar,omitempty"`
	Details     *UserDetails     `json:"details,omitempty"`
	Preferences *UserPreferences `json:"preferences,omitempty"`
}