package models

import (
	"time"
)

// ModelUser represents a user in the system
type ModelUser struct {
	ID        int64     `gorm:"column:id;primaryKey;autoIncrement;type:bigint"`
	Username  string    `gorm:"column:username;type:varchar(100);not null;uniqueIndex:idx_username"`
	Email     string    `gorm:"column:email;type:varchar(255);not null;uniqueIndex"`
	Password  string    `gorm:"column:password;type:varchar(255);not null"`
	FirstName *string   `gorm:"column:first_name;type:varchar(100)"`
	LastName  *string   `gorm:"column:last_name;type:varchar(100)"`
	Bio       *string   `gorm:"column:bio;type:text"`
	IsActive  bool      `gorm:"column:is_active;type:boolean;default:true"`
	CreatedAt time.Time `gorm:"column:created_at;type:timestamp;default:now()"`
	UpdatedAt time.Time `gorm:"column:updated_at;type:timestamp;default:now()"`

	Posts    []*ModelPost    `gorm:"foreignKey:UserID;association_foreignkey:ID;constraint:OnDelete:CASCADE,OnUpdate:CASCADE"`
	Comments []*ModelComment `gorm:"foreignKey:UserID;association_foreignkey:ID;constraint:OnDelete:SET NULL"`
}

func (ModelUser) TableName() string {
	return "users"
}

// ModelPost represents a blog post
type ModelPost struct {
	ID          int64      `gorm:"column:id;primaryKey;autoIncrement;type:bigint"`
	UserID      int64      `gorm:"column:user_id;type:bigint;not null;index:idx_user_id"`
	Title       string     `gorm:"column:title;type:varchar(255);not null"`
	Slug        string     `gorm:"column:slug;type:varchar(255);not null;uniqueIndex:idx_slug"`
	Content     string     `gorm:"column:content;type:text;not null"`
	Excerpt     *string    `gorm:"column:excerpt;type:text"`
	Published   bool       `gorm:"column:published;type:boolean;default:false"`
	ViewCount   int64      `gorm:"column:view_count;type:bigint;default:0"`
	PublishedAt *time.Time `gorm:"column:published_at;type:timestamp"`
	CreatedAt   time.Time  `gorm:"column:created_at;type:timestamp;default:now()"`
	UpdatedAt   time.Time  `gorm:"column:updated_at;type:timestamp;default:now()"`

	User     *ModelUser      `gorm:"foreignKey:UserID;references:ID;constraint:OnDelete:CASCADE,OnUpdate:CASCADE"`
	Comments []*ModelComment `gorm:"foreignKey:PostID;association_foreignkey:ID;constraint:OnDelete:CASCADE"`
}

func (ModelPost) TableName() string {
	return "posts"
}

// ModelComment represents a comment on a post
type ModelComment struct {
	ID        int64      `gorm:"column:id;primaryKey;autoIncrement;type:bigint"`
	PostID    int64      `gorm:"column:post_id;type:bigint;not null;index:idx_post_id"`
	UserID    *int64     `gorm:"column:user_id;type:bigint;index:idx_user_id"`
	Content   string     `gorm:"column:content;type:text;not null"`
	CreatedAt time.Time  `gorm:"column:created_at;type:timestamp;default:now()"`
	UpdatedAt time.Time  `gorm:"column:updated_at;type:timestamp;default:now()"`

	Post *ModelPost `gorm:"foreignKey:PostID;references:ID;constraint:OnDelete:CASCADE"`
	User *ModelUser `gorm:"foreignKey:UserID;references:ID;constraint:OnDelete:SET NULL"`
}

func (ModelComment) TableName() string {
	return "comments"
}