package model

import (
	"time"

	"gorm.io/gorm"
)

const CommentLengthLimit = 2000

var (
	EmptyCommentsConnection = CommentsConnection{
		Edges: make([]*CommentsEdge, 0),
		PageInfo: &PageInfo{
			StartCursor: 0,
			EndCursor:   0,
			HasNextPage: false,
		},
	}
	EmptyPostsConnections = PostsConnection{
		Edges: make([]*PostsEdge, 0),
		PageInfo: &PageInfo{
			StartCursor: 0,
			EndCursor:   0,
			HasNextPage: false,
		},
	}
)

type Comment struct {
	// db fields
	ID        uint           `json:"id" gorm:"primarykey;column:id"`
	CreatedAt time.Time      `gorm:"column:created_at"`
	UpdatedAt time.Time      `gorm:"column:updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index;column:deleted_at"`

	RootComment bool       `gorm:"column:root"`
	PostID      uint       `json:"post_id" gorm:"column:post_id"`
	Author      string     `json:"author" gorm:"column:author"`
	Contents    string     `json:"contents" gorm:"column:contents"`
	Replies     []*Comment `json:"replies" gorm:"many2many:comment_replies"`
}

type Post struct {
	// db fields
	ID        uint           `json:"id" gorm:"primarykey;column:id"`
	CreatedAt time.Time      `gorm:"column:created_at"`
	UpdatedAt time.Time      `gorm:"column:updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index;column:deleted_at"`

	Title         string     `json:"title" gorm:"column:title"`
	Author        string     `json:"author" gorm:"column:author"`
	Contents      string     `json:"contents" gorm:"column:contents"`
	Comments      []*Comment `json:"comments" gorm:"foreignKey:PostID"`
	AllowComments bool       `json:"allowComments" gorm:"column:allow_comments"`
}

func PostFromInput(input *PostInput) *Post {
	return &Post{
		Author:        input.Author,
		Title:         input.Title,
		Contents:      input.Contents,
		AllowComments: input.AllowComments,
		Comments:      make([]*Comment, 0),
	}
}

func CommentFromInput(input *CommentInput) *Comment {
	return &Comment{
		Author:   input.Author,
		Contents: input.Contents,
		Replies:  make([]*Comment, 0),
	}
}