package models

import (
	"time"

	"gorm.io/gorm"
)

type User struct {
	ID        uint           `gorm:"primaryKey" json:"id"`
	Phone     string         `gorm:"size:20;uniqueIndex;not null" json:"phone"`
	Nickname  string         `gorm:"size:100" json:"nickname"`
	Role      string         `gorm:"size:20;default:user" json:"role"` // user, admin
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
}

// TimeSlot 时间槽模型
type TimeSlot struct {
	ID            uint           `gorm:"primaryKey" json:"id"`
	Date          time.Time      `gorm:"not null;index" json:"date"`
	StartTime     time.Time      `gorm:"not null" json:"start_time"`
	EndTime       time.Time      `gorm:"not null" json:"end_time"`
	MaxPeople     int            `gorm:"not null;default:1" json:"max_people"`     // 每个时间段最多预约人数
	CurrentPeople int            `gorm:"not null;default:0" json:"current_people"` // 当前已预约人数
	IsActive      bool           `gorm:"default:true" json:"is_active"`
	CreatedAt     time.Time      `json:"created_at"`
	UpdatedAt     time.Time      `json:"updated_at"`
	DeletedAt     gorm.DeletedAt `gorm:"index" json:"-"`
}

type Appointment struct {
	ID          uint           `gorm:"primaryKey" json:"id"`
	UserID      uint           `gorm:"not null" json:"user_id"`
	TimeSlotID  uint           `gorm:"not null" json:"time_slot_id"`
	PeopleCount int            `gorm:"not null;default:1" json:"people_count"` // 预约人数
	Status      string         `gorm:"size:20;default:pending" json:"status"`  // pending, confirmed, cancelled, completed
	Notes       string         `gorm:"size:500" json:"notes"`
	CreatedAt   time.Time      `json:"created_at"`
	UpdatedAt   time.Time      `json:"updated_at"`
	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`

	// 关联
	User     User     `gorm:"foreignKey:UserID" json:"user,omitempty"`
	TimeSlot TimeSlot `gorm:"foreignKey:TimeSlotID" json:"time_slot,omitempty"`
}

// 预约状态枚举
const (
	AppointmentPending   = "pending"
	AppointmentConfirmed = "confirmed"
	AppointmentCancelled = "cancelled"
	AppointmentCompleted = "completed"
)

// 用户角色枚举
const (
	RoleUser  = "user"
	RoleAdmin = "admin"
)