package routers

import (
	"crypto/md5"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"main/configs"
	"main/models"
	"main/utils"
	"net/http"
	"time"

	"github.com/google/uuid"
	"github.com/gorilla/mux"
)

// 獲取用戶列表
func UsersGet(w http.ResponseWriter, r *http.Request) {
	var listview models.ListView
	listview.Page = utils.ParamInt(r.URL.Query().Get("page"), 1)
	listview.PageSize = utils.ParamInt(r.URL.Query().Get("pageSize"), 10)
	var user_list []models.User
	db := configs.ORMDB()
	db.Offset((listview.Page - 1) * listview.PageSize).Limit(listview.PageSize).Find(&user_list)
	for _, user := range user_list {
		listview.List = append(listview.List, user)
	}
	db.Model(&models.User{}).Count(&listview.Total)
	listview.Next = listview.Page*listview.PageSize < int(listview.Total)
	listview.WriteJSON(w)
}

// 創建用戶
func UsersPost(w http.ResponseWriter, r *http.Request) {
	var form struct {
		Name     string `json:"name"`
		Email    string `json:"email"`
		Password string `json:"password"`
	}
	body, err := ioutil.ReadAll(r.Body)
	if err != nil {
		fmt.Println(err)
		return
	}
	defer r.Body.Close()
	if err = json.Unmarshal(body, &form); err != nil {
		fmt.Println(err)
		return
	}

	if form.Name == "" || form.Email == "" || form.Password == "" {
		fmt.Println("name, email, password cannot be empty")
		return
	}

	// 創建用戶
	var slat string = uuid.New().String()
	var user models.User = models.User{
		Name:      form.Name,
		Email:     form.Email,
		Password:  fmt.Sprintf("%x", md5.Sum([]byte(form.Password+slat))),
		Slat:      slat,
		CreatedAt: time.Now().Format("2006-01-02 15:04:05"),
		UpdatedAt: time.Now().Format("2006-01-02 15:04:05"),
	}
	if err := configs.ORMDB().Create(&user).Error; err != nil {
		fmt.Println(err)
		return
	}

	// 返回信息
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	w.Write(utils.ToJSON(user))
}

// 獲取用戶
func UsersItemGet(w http.ResponseWriter, r *http.Request) {
	user := models.User{ID: utils.ParamInt(mux.Vars(r)["id"], 0)}
	configs.ORMDB().First(&user)
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	w.Write(utils.ToJSON(user))
}

// 更新用戶
func UsersItemPatch(w http.ResponseWriter, r *http.Request) {
	user := models.User{ID: utils.ParamInt(mux.Vars(r)["id"], 0)}
	body, err := ioutil.ReadAll(r.Body)
	if err != nil {
		fmt.Println(err)
		return
	}
	defer r.Body.Close()
	if err = json.Unmarshal(body, &user); err != nil {
		fmt.Println(err)
		return
	}
	if err := configs.ORMDB().Save(&user).Error; err != nil {
		fmt.Println(err)
		return
	}
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	w.Write(utils.ToJSON(user))
}

// 刪除用戶
func UsersItemDelete(w http.ResponseWriter, r *http.Request) {
	user := models.User{ID: utils.ParamInt(mux.Vars(r)["id"], 0)}
	configs.ORMDB().Delete(&user)
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	w.Write(utils.ToJSON(user))
}