package controller

import (
	"GolangLearnPractice1/bookstore/dao"
	"GolangLearnPractice1/bookstore/model"
	"fmt"
	"net/http"
	"strconv"
	"text/template"
)

/*
//IndexHandler 处理首页
func IndexHandler(w http.ResponseWriter, r *http.Request) {

	pageNo := r.FormValue("pageNo")
	if pageNo == "" {
		pageNo = "1"
	}
	page, err := dao.GetPageBooks(pageNo)
	if err != nil {
		fmt.Println("分页获取所有图书失败")
	}
	t := template.Must(template.ParseFiles("view/index.html"))
	t.Execute(w, page)
}
*/
/*
//GetBooks 获取所有图书
func GetBooks(w http.ResponseWriter, r *http.Request) {
	books, err := dao.GetBooks()
	if err != nil {
		fmt.Println("获取所有图书失败")
	}
	t := template.Must(template.ParseFiles("view/pages/manager/book_manager.html"))
	t.Execute(w, books)
}
*/
//GetPageBooks 分页获取所有图书
func GetPageBooks(w http.ResponseWriter, r *http.Request) {
	pageNo := r.FormValue("pageNo")
	if pageNo == "" {
		pageNo = "1"
	}
	page, err := dao.GetPageBooks(pageNo)
	if err != nil {
		fmt.Println("分页获取所有图书失败")
	}
	t := template.Must(template.ParseFiles("view/pages/manager/book_manager.html"))
	t.Execute(w, page)
}

//GetPageBooksByPrice 分页获取价格范围内的所有图书
func GetPageBooksByPrice(w http.ResponseWriter, r *http.Request) {
	pageNo := r.FormValue("pageNo")
	minPrice := r.FormValue("min")
	maxPrice := r.FormValue("max")
	if pageNo == "" {
		pageNo = "1"
	}
	var page *model.Page
	if minPrice == "" && maxPrice == "" {
		//没有按价格查找，正常反馈
		page, _ = dao.GetPageBooks(pageNo)
	} else {
		//价格查找商品
		page, _ = dao.GetPageBooksByPrice(pageNo, minPrice, maxPrice)
		page.MinPrice = minPrice
		page.MaxPrice = maxPrice

	}
	/*
		cookie, _ := r.Cookie("user")
		if cookie != nil {
			cookieValue := cookie.Value
			sess, _ := dao.GetSessionByID(cookieValue)
			if sess.UserID > 0 {
				page.IsLogin = true
				page.Username = sess.Username
			}

		}
	*/

	//-------------------
	//调用IsLogin函数判断是否已经登录
	flag, session := dao.IsLogin(r)

	if flag {
		//已经登录，设置page中的IsLogin字段和Username的字段值
		page.IsLogin = true
		page.Username = session.Username
		page.UserID = session.UserID
		page.IsAdmin = dao.UserIDIsAdmin(page.UserID)
	}

	t := template.Must(template.ParseFiles("view/index.html"))
	t.Execute(w, page)
}

/*

//UpdateOrAddBook 修改或者添加图书
func UpdateOrAddBook(w http.ResponseWriter, r *http.Request) {
	template.Must(template.ParseFiles("view/pages/manager/book_edit.html"))
	title := r.PostFormValue("title")
	author := r.PostFormValue("author")
	price := r.PostFormValue("price")
	sales := r.PostFormValue("sales")
	stock := r.PostFormValue("stock")

	fPrice, _ := strconv.ParseFloat(price, 64)
	fSales, _ := strconv.ParseInt(sales, 10, 0)
	fStcok, _ := strconv.ParseInt(stock, 10, 0)
	book := &model.Book{
		Title:   title,
		Author:  author,
		Price:   fPrice,
		Sales:   int(fSales),
		Stock:   int(fStcok),
		ImgPath: "/static/img/default.jpg",
	}

	dao.AddBook(book)
	GetBooks(w, r)
}
*/

//ToPageAddBook 页面跳转到
func ToPageAddBook(w http.ResponseWriter, r *http.Request) {
	t := template.Must(template.ParseFiles("view/pages/manager/book_edit.html"))
	t.Execute(w, "")
}

//DeleteBook 从数据库里删除图书
func DeleteBook(w http.ResponseWriter, r *http.Request) {
	bookID := r.FormValue("bookId")

	dao.DeleteBookByID(bookID)
	GetPageBooks(w, r)
}

//ToUpdateBookPage 网页转到更新或添加图书页面
func ToUpdateBookPage(w http.ResponseWriter, r *http.Request) {

	bookID := r.FormValue("bookId")
	book, _ := dao.GetBookByID(bookID)
	if book.ID > 0 {
		t := template.Must(template.ParseFiles("view/pages/manager/book_modify.html"))
		t.Execute(w, book)
	} else {
		t := template.Must(template.ParseFiles("view/pages/manager/book_modify.html"))
		t.Execute(w, "")
	}

}

//UpdateOrAddBook 添加或更新图书的信息
func UpdateOrAddBook(w http.ResponseWriter, r *http.Request) {
	template.Must(template.ParseFiles("view/pages/manager/book_modify.html"))
	id := r.PostFormValue("bookId")

	title := r.PostFormValue("title")
	author := r.PostFormValue("author")
	price := r.PostFormValue("price")
	sales := r.PostFormValue("sales")
	stock := r.PostFormValue("stock")

	fPrice, _ := strconv.ParseFloat(price, 64)
	fSales, _ := strconv.ParseInt(sales, 10, 0)
	fStcok, _ := strconv.ParseInt(stock, 10, 0)
	fID, _ := strconv.ParseInt(id, 10, 0)
	book := &model.Book{
		ID:      int(fID),
		Title:   title,
		Author:  author,
		Price:   fPrice,
		Sales:   int(fSales),
		Stock:   int(fStcok),
		ImgPath: "/static/img/default.jpg",
	}
	if book.ID > 0 {
		dao.UpdateBook(book)
	} else {
		dao.AddBook(book)
	}

	GetPageBooks(w, r)
}