package main

import (
	"bytes"
	"encoding/json"
	"io"
	"io/ioutil"
	"net/http"
	"os"
	"path"
	"strconv"
	"strings"
	"time"
)

/**
控制器
 */


//页面

//主页面
func IndexView(w http.ResponseWriter,r *http.Request){
	html := loadHtml("./views/index.html")
	w.Write(html)
}

//上传页面
func UploadView(w http.ResponseWriter,r *http.Request){
	html := loadHtml("./views/upload.html")
	w.Write(html)
}

//图片上传
func ApiUpload(w http.ResponseWriter,r *http.Request){
	r.ParseForm()
	f,h,err:= r.FormFile("file")
	if err!=nil{
		io.WriteString(w,"上传错误!")
		return
	}
	t := h.Header.Get("Content-Type")
	if !strings.Contains(t,"image"){
		io.WriteString(w,"文件类型错误!")
		return
	}
	os.Mkdir("./static",0666)
	now := time.Now()
	name := now.Format("2006-01-02150405"+path.Ext(h.Filename))
	//path.Ext(h.Filename)//获取后缀名
	out,err := os.Create("./static/"+name)
	if err!=nil{
		io.WriteString(w,"文件创建错误!")
		return
	}
	io.Copy(out,f)
	out.Close()
	f.Close()

	mod := Info{
		Name:h.Filename,
		Path: "/static/"+name,
		Note:r.Form.Get("note"),
		Unix:now.Unix(),
	}
	InfoAdd(&mod)
	http.Redirect(w,r,"/list",302)
}

//详细页面
func DetailView(w http.ResponseWriter,r *http.Request){
	r.ParseForm()
	idStr := r.Form.Get("id")

	id,_ := strconv.ParseInt(idStr,10,64)
	mod,_:=InfoGet(id)
	html := loadHtml("./views/detail.html")
	date := time.Unix(mod.Unix,0).Format("2006年01月02日15:04:05")
	html = bytes.Replace(html,[]byte("@src"),[]byte(mod.Path),1)
	html = bytes.Replace(html,[]byte("@note"),[]byte(mod.Note),1)
	html = bytes.Replace(html,[]byte("@unix"),[]byte(date),1)
	w.Write(html)
}

//相册列表
func ApiList(w http.ResponseWriter,r *http.Request){
	mods,_ := InfoList()
	buf,_:=json.Marshal(mods)
	w.Header().Set("Content-Type","application/json")
	w.Write(buf)
}

//删除
func ApiDrop(w http.ResponseWriter,r *http.Request){
	r.ParseForm()
	idStr := r.Form.Get("id")
	id,_:=strconv.ParseInt(idStr,10,64)
	err:=InfoDelete(id)
	if err!= nil {
		io.WriteString(w,"删除失败")
		return
	}
	io.WriteString(w,"删除成功")
	return
}

//相册列表页面
func ListView(w http.ResponseWriter,r *http.Request){
	html := loadHtml("./views/list.html")
	w.Write(html)
}


/**
	加载html文件
 */
func loadHtml(name string) []byte {
	buf,err :=  ioutil.ReadFile(name)
	if err != nil {
		return []byte("")
	}
	return buf
}