package handler

import (
	"encoding/json"
	"github.com/gorilla/csrf"
	"math"
	"net/http"
	"picgo/corelib"
	"picgo/data"
	"picgo/model"
	"strconv"
)

func UserPageHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method == "GET" {
		var (
			err  error
			user model.SysUser
		)
		username := r.Context().Value("username").(string)
		if user, err = data.SysUserGetCacheByUsername(username); err != nil {
			http.Error(w, "IndexHandler SysUserGetCacheByUsername Error", http.StatusInternalServerError)
			return
		}
		tmpData := map[string]interface{}{
			csrf.TemplateTag: csrf.TemplateField(r),
		}
		tmpData["Title"] = "用户管理"
		tmpData["Active"] = r.URL.Path
		tmpData["IsSuper"] = user.IsSuper
		w.Header().Add("X-CSRF-Token", csrf.Token(r))
		corelib.TemplateHandler(w, tmpData, "layout.html", "view/layout.html", "view/user.html")
	} else {
		http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
		return
	}
}

func UserCreateApiHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method == http.MethodPost {
		var (
			err      error
			res      model.UserCreateRequest
			user     model.SysUser
			password string
			salt     string
		)

		if err = json.NewDecoder(r.Body).Decode(&res); err != nil {
			corelib.Logger.Error("UserCreateApiHandler, 参数获取失败")
			corelib.WriteJsonResponse(w, 400, "参数错误", nil)
			return
		}

		if (res.Username == "") || (res.Password == "") {
			corelib.Logger.Error("UserCreateApiHandler, 用户名或者密码为空")
			corelib.WriteJsonResponse(w, 400, "请输入用户名密码", nil)
			return
		}

		if isExists := data.SysUserExists(res.Username); !isExists {
			corelib.Logger.Error("UserCreateApiHandler, 用户已经存在")
			corelib.WriteJsonResponse(w, 10050, "用户已经存在", nil)
			return
		}
		salt = corelib.GenerateSalt()
		if password, err = corelib.HashPassword(res.Password, salt); err != nil {
			corelib.Logger.Error("UserCreateApiHandler, 生成密码失败")
			corelib.WriteJsonResponse(w, 10051, "生成密码失败", nil)
			return
		}
		user.Username = res.Username
		user.Password = password
		user.Salt = salt
		user.IsSuper = 0
		if err = data.SysUserCreate(user); err != nil {
			corelib.Logger.Error("UserCreateApiHandler, 数据保存用户数据失败")
			corelib.WriteJsonResponse(w, 10052, "新建用户失败", nil)
			return
		}
		w.Header().Set("Content-Type", "application/json")
		corelib.WriteJsonResponse(w, 200, "用户创建成功", nil)

	} else {
		//http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
		corelib.WriteJsonResponse(w, 405, "方法错误", nil)
		return
	}
}

// UserPageApiHandler 分页查询
func UserPageApiHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method == http.MethodPost {
		var (
			err          error
			page         int
			onePageCount int
			count        int
		)
		query := r.URL.Query()
		// 搜索条件
		search := query.Get("search")
		// 每页显示多少跳
		if onePageCount, err = strconv.Atoi(query.Get("count")); err != nil {
			corelib.Logger.Error("UserPageApiHandler, 获取count参数失败")
			corelib.WriteJsonResponse(w, 400, "参数错误", nil)
			return
		}
		// 第几页
		if page, err = strconv.Atoi(query.Get("page")); err != nil {
			corelib.Logger.Error("UserPageApiHandler, 获取page参数失败")
			corelib.WriteJsonResponse(w, 400, "参数错误", nil)
			return
		}
		numPage := math.Ceil(float64(count) / float64(onePageCount))
		paginationData := corelib.GetPaginationData(int(numPage), page, 2)
		if search != "" {

		} else {

		}

		corelib.Logger.Infoln("paginationData: ", paginationData)

	} else {
		corelib.WriteJsonResponse(w, 405, "方法错误", nil)
		return
	}
}

func pagination(page, onePageCount int, search string) {

}