package model

import "time"

// 角色常量
const (
	RoleAdmin    = "admin"
	RoleOperator = "operator"
	RoleViewer   = "viewer"
	RoleFarmer   = "farmer"
)

// AllRoles 系统支持的全部角色
var AllRoles = []string{RoleAdmin, RoleOperator, RoleViewer, RoleFarmer}

// RoleNames 角色中文名映射
var RoleNames = map[string]string{
	RoleAdmin:    "管理员",
	RoleOperator: "操作员",
	RoleViewer:   "查看者",
	RoleFarmer:   "养殖员",
}

// Permission 权限表
type Permission struct {
	ID          string    `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	Code        string    `gorm:"column:code;uniqueIndex" json:"code"` // 权限码，如 device:control
	Name        string    `gorm:"column:name" json:"name"`             // 权限名称
	Description *string   `gorm:"column:description" json:"description,omitempty"`
	CreatedAt   time.Time `gorm:"type:timestamptz" json:"createdAt"`
}

func (Permission) TableName() string { return "permissions" }

// RolePermission 角色-权限关联表
type RolePermission struct {
	ID           string    `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	Role         string    `gorm:"column:role;index:idx_role_permissions_role_code,unique,priority:1" json:"role"`
	PermissionID string    `gorm:"column:permission_id;type:uuid;index:idx_role_permissions_role_code,unique,priority:2" json:"permissionId"`
	CreatedAt    time.Time `gorm:"type:timestamptz" json:"createdAt"`
}

func (RolePermission) TableName() string { return "role_permissions" }