package domain

import (
	"strings"
	"time"

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

// User roles
const (
	RoleSuperAdmin  = "super_admin"  // 시스템 전역 관리자
	RoleTenantAdmin = "tenant_admin" // 테넌트 관리자
	RoleRPAdmin     = "rp_admin"     // 특정 앱(RP) 관리자
	RoleUser        = "user"         // 일반 사용자
)

// NormalizeRole maps legacy/synonym role values to canonical role keys.
func NormalizeRole(role string) string {
	normalized := strings.ToLower(strings.TrimSpace(role))
	switch normalized {
	case "tenant_member":
		return RoleUser
	case "admin":
		// Legacy admin is treated as tenant admin for least-privilege compatibility.
		return RoleTenantAdmin
	default:
		return normalized
	}
}

// User represents the user model stored in PostgreSQL
type User struct {
	ID              string         `gorm:"primaryKey;type:uuid;default:gen_random_uuid()" json:"id"`
	Email           string         `gorm:"uniqueIndex;not null" json:"email"`
	PasswordHash    *string        `gorm:"column:password_hash" json:"-"`
	Name            string         `gorm:"column:name;not null" json:"name"`
	Phone           string         `gorm:"column:phone" json:"phone"`
	Role            string         `gorm:"column:role;default:'user';not null" json:"role"` // super_admin, tenant_admin, rp_admin, user
	AffiliationType string         `gorm:"column:affiliation_type" json:"affiliationType"`
	CompanyCode     string         `gorm:"column:company_code;index" json:"companyCode"`
	TenantID        *string        `gorm:"column:tenant_id;type:uuid;index" json:"tenantId,omitempty"`
	Tenant          *Tenant        `gorm:"foreignKey:TenantID" json:"tenant,omitempty"`
	RelyingPartyID  *string        `gorm:"column:relying_party_id;type:uuid;index" json:"relyingPartyId,omitempty"` // RP Admin용
	Department      string         `gorm:"column:department" json:"department"`
	Position        string         `gorm:"column:position" json:"position"`  // 직급 (예: 수석, 책임, 선임)
	JobTitle        string         `gorm:"column:job_title" json:"jobTitle"` // 직무 (예: 프론트엔드 개발, 기획)
	Metadata        JSONMap        `gorm:"column:metadata;type:jsonb" json:"metadata,omitempty"`
	Status          string         `gorm:"column:status;default:'active'" json:"status"`
	CreatedAt       time.Time      `gorm:"column:created_at" json:"createdAt"`
	UpdatedAt       time.Time      `gorm:"column:updated_at" json:"updatedAt"`
	DeletedAt       gorm.DeletedAt `gorm:"column:deleted_at;index" json:"-"`
}

// BeforeCreate hook to generate UUID if not present
func (u *User) BeforeCreate(tx *gorm.DB) (err error) {
	if u.ID == "" {
		u.ID = uuid.New().String()
	}
	return
}