package models

import (
	"encoding/json"
	"log"
	"net/http"
)

type ListView struct {
	Page     int         `json:"page"`
	PageSize int         `json:"page_size"`
	Total    int64       `json:"total"`
	Next     bool        `json:"next"`
	List     interface{} `json:"list"`
	Type     string      `json:"-"`
}

// 轉換爲JSON並返回
func (listview *ListView) ToJSON() []byte {
	if listview.List == nil {
		listview.List = make([]interface{}, 0)
	}
	b, err := json.MarshalIndent(listview, "", "  ")
	if err != nil {
		log.Println(err)
		return nil
	}
	return b
}

// 直接輸出JSON給瀏覽器
func (listview *ListView) WriteJSON(w http.ResponseWriter) {
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	w.Write(listview.ToJSON())
}