package system

import (
	"io"
	"log"
	"net/http"

	"management/internal/erpserver/handler"
	"management/internal/erpserver/model/dto"
	"management/internal/erpserver/model/form"
	systemmodel "management/internal/erpserver/model/system"
	v1 "management/internal/erpserver/service/v1"
	"management/internal/erpserver/templ/auth"
	"management/internal/erpserver/templ/system/user"
	"management/internal/pkg/binding"
	"management/internal/pkg/convertor"
	"management/internal/pkg/render"
)

type UserHandler struct {
	*handler.Handler
	captchaService    v1.CaptchaService
	userService       v1.UserService
	roleService       v1.RoleService
	departmentService v1.DepartmentService
}

func NewUserHandler(
	handler *handler.Handler,
	captchaService v1.CaptchaService,
	userService v1.UserService,
	roleService v1.RoleService,
	departmentService v1.DepartmentService,
) *UserHandler {
	return &UserHandler{
		Handler:           handler,
		captchaService:    captchaService,
		userService:       userService,
		roleService:       roleService,
		departmentService: departmentService,
	}
}

func (h *UserHandler) Add(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	h.Render(ctx, w, user.Edit(ctx, &systemmodel.User{HashedPassword: nil}))
}

func (h *UserHandler) Edit(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	vars := r.URL.Query()
	id := convertor.QueryInt[int32](vars, "id", 0)
	vm := &systemmodel.User{}
	if id > 0 {
		if u, err := h.userService.Get(ctx, id); err == nil {
			vm.HashedPassword = []byte("********")
			vm = u
		}
	}
	h.Render(ctx, w, user.Edit(ctx, vm))
}

func (h *UserHandler) Save(w http.ResponseWriter, r *http.Request) {
	var req form.User
	if err := binding.Form.Bind(r, &req); err != nil {
		h.JSONErr(w, binding.ValidatorErrors(err))
		return
	}

	ctx := r.Context()
	if req.DepartmentID > 0 {
		if _, err := h.departmentService.Get(ctx, req.DepartmentID); err != nil {
			h.JSONErr(w, "部门数据错误")
			return
		}
	}
	if req.RoleID > 0 {
		if _, err := h.roleService.Get(ctx, req.RoleID); err != nil {
			h.JSONErr(w, "角色数据错误")
			return
		}
	}

	if *req.ID == 0 {
		err := h.userService.Create(ctx, &req)
		if err != nil {
			h.JSONErr(w, err.Error())
			return
		}

		h.JSONOk(w, "添加成功")
	} else {
		err := h.userService.Update(ctx, &req)
		if err != nil {
			h.JSONErr(w, err.Error())
			return
		}

		h.JSONOk(w, "更新成功")
	}
}

func (h *UserHandler) List(w http.ResponseWriter, r *http.Request) {
	switch r.Method {
	case http.MethodGet:
		ctx := r.Context()
		h.Render(ctx, w, user.List(ctx))
	case http.MethodPost:
		var q dto.SearchDto
		q.SearchTimeBegin, q.SearchTimeEnd = convertor.DefaultStartTimeAndEndTime(r.PostFormValue("timeBegin"), r.PostFormValue("timeEnd"))
		q.SearchStatus = convertor.ConvertInt(r.PostFormValue("status"), 9999)
		q.SearchName = r.PostFormValue("name")
		q.SearchEmail = r.PostFormValue("email")
		q.SearchID = convertor.ConvertInt[int64](r.PostFormValue("id"), 0)
		q.Page = convertor.ConvertInt(r.PostFormValue("page"), 1)
		q.Rows = convertor.ConvertInt(r.PostFormValue("rows"), 10)
		res, count, err := h.userService.List(r.Context(), q)
		if err != nil {
			h.JSONErr(w, err.Error())
			return
		}

		data := render.ResponseList{
			Code:    0,
			Message: "ok",
			Count:   count,
			Data:    res,
		}
		h.JSON(w, data)
	default:
		http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
	}
}

func (h *UserHandler) Profile(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	u := h.AuthUser(ctx)
	vm, _ := h.userService.Get(ctx, u.ID)
	h.Render(ctx, w, user.Profile(ctx, vm))
}

func (h *UserHandler) Data(w http.ResponseWriter, r *http.Request) {
	vars := r.URL.Query()
	t := vars.Get("type")
	if t == "xm_select" {
		res, err := h.userService.XmSelect(r.Context())
		if err != nil {
			h.JSONErr(w, err.Error())
			return
		}

		h.JSON(w, res)
		return
	}

	h.JSON(w, nil)
}

func (h *UserHandler) Login(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	switch r.Method {
	case http.MethodGet:
		u := h.AuthUser(ctx)
		if u.ID > 0 {
			if err := h.RenewToken(ctx); err == nil {
				http.Redirect(w, r, "/home.html", http.StatusFound)
				return
			}
		}

		_ = h.Destroy(ctx)
		component := auth.Login(ctx)
		h.Render(ctx, w, component)
	case http.MethodPost:
		defer func(Body io.ReadCloser) {
			err := Body.Close()
			if err != nil {
				h.Log.Error(err.Error(), err)
			}
		}(r.Body)
		var req form.Login
		if err := binding.Form.Bind(r, &req); err != nil {
			e := binding.ValidatorErrors(err)
			h.JSONErr(w, e)
			return
		}

		if !h.captchaService.Verify(req.CaptchaID, req.Captcha, true) {
			h.JSONErr(w, "验证码错误")
			return
		}

		req = req.SetAttributes(r)
		err := h.userService.Login(ctx, &req)
		if err != nil {
			log.Println(err)
			h.JSONErr(w, err.Error())
			return
		}

		h.JSONOk(w, "login successfully")
	default:
		http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
	}
}

func (h *UserHandler) Logout(w http.ResponseWriter, r *http.Request) {
	err := h.Destroy(r.Context())
	if err != nil {
		h.Log.Error(err.Error(), err)
	}
	http.Redirect(w, r, "/", http.StatusFound)
}