package models

import (
	"time"

	"gorm.io/gorm"
)

// Column 专栏模型
type Column struct {
	ID          uint   `json:"id" gorm:"primaryKey;column:id"`
	Name        string `json:"name" gorm:"column:name"`
	Description string `json:"description" gorm:"column:description;type:text"`
	Cover       string `json:"cover" gorm:"column:cover"`
	IsActive    int    `json:"isActive" gorm:"column:is_active;default:1"`
	SortOrder   uint   `json:"sortOrder" gorm:"column:sort_order;default:0"`
	CreatedAt   int64  `json:"createdAt" gorm:"column:created_at"`
	UpdatedAt   int64  `json:"updatedAt" gorm:"column:updated_at"`
	DeletedAt   int64  `json:"deletedAt" gorm:"column:deleted_at;default:0"`
}

// TableName 指定表名
func (Column) TableName() string {
	return "columns"
}

// BeforeCreate 创建前钩子
func (c *Column) BeforeCreate(tx *gorm.DB) error {
	now := time.Now().Unix()
	if c.CreatedAt == 0 {
		c.CreatedAt = now
	}
	if c.UpdatedAt == 0 {
		c.UpdatedAt = now
	}
	if c.DeletedAt == 0 {
		c.DeletedAt = 0
	}
	return nil
}

// BeforeUpdate 更新前钩子
func (c *Column) BeforeUpdate(tx *gorm.DB) error {
	c.UpdatedAt = time.Now().Unix()
	return nil
}

// ColumnResponse 专栏 API 响应
type ColumnResponse struct {
	ID          uint   `json:"id"`
	Name        string `json:"name"`
	Description string `json:"description"`
	Cover       string `json:"cover"`
	IsActive    int    `json:"isActive"`
	SortOrder   uint   `json:"sortOrder"`
	CreatedAt   string `json:"createdAt"`
	UpdatedAt   string `json:"updatedAt"`
	PostCount   int64  `json:"postCount,omitempty"`
	LastUpdated string `json:"lastUpdated,omitempty"`
}

// ColumnPost 专栏文章关联模型
type ColumnPost struct {
	ColumnID  uint  `json:"columnId" gorm:"primaryKey;column:column_id"`
	PostID    uint  `json:"postId" gorm:"primaryKey;column:post_id"`
	SortOrder uint  `json:"sortOrder" gorm:"column:sort_order;default:0"`
	CreatedAt int64 `json:"createdAt" gorm:"column:created_at"`
}

// TableName 指定表名
func (ColumnPost) TableName() string {
	return "column_posts"
}

// BeforeCreate 创建前钩子
func (cp *ColumnPost) BeforeCreate(tx *gorm.DB) error {
	if cp.CreatedAt == 0 {
		cp.CreatedAt = time.Now().Unix()
	}
	return nil
}
