package system

import (
	"fmt"
	"net/http"
	"time"

	"management/internal/db/model/dto"
	db "management/internal/db/sqlc"
	"management/internal/router/manage/util"
	systemservice "management/internal/service/system"
	"management/internal/tpl"
)

type SysDepartmentHandler struct{}

func NewSysDepartmentHandler() *SysDepartmentHandler {
	return &SysDepartmentHandler{}
}

func (h *SysDepartmentHandler) List(w http.ResponseWriter, r *http.Request) {
	tpl.HTML(w, r, "department/list.tmpl", nil)
}

func (h *SysDepartmentHandler) PostList(w http.ResponseWriter, r *http.Request) {
	var q dto.SearchDto
	q.SearchStatus = util.ConvertInt(r.PostFormValue("SearchStatus"), 9999)
	q.SearchParentID = util.ConvertInt(r.PostFormValue("SearchParentID"), 0)
	q.SearchName = r.PostFormValue("SearchName")
	q.SearchKey = r.PostFormValue("SearchKey")
	q.Page = util.ConvertInt(r.PostFormValue("page"), 1)
	q.Rows = util.ConvertInt(r.PostFormValue("rows"), 10)
	res, count, err := systemservice.ListSysDepartmentCondition(r.Context(), q)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	data := tpl.ResponseList{
		Code:    0,
		Message: "ok",
		Count:   count,
		Data:    res,
	}
	tpl.JSON(w, data)
}

func (h *SysDepartmentHandler) Add(w http.ResponseWriter, r *http.Request) {
	tpl.HTML(w, r, "department/edit.tmpl", map[string]any{
		"Item": &db.SysDepartment{Sort: 6666},
	})
}

func (h *SysDepartmentHandler) AddChildren(w http.ResponseWriter, r *http.Request) {
	vars := r.URL.Query()
	parentID := util.DefaultInt(vars, "parentID", 0)
	vm := &db.SysDepartment{ParentID: int32(parentID), Sort: 6666}
	tpl.HTML(w, r, "department/edit.tmpl", map[string]any{
		"Item": vm,
	})
}

func (h *SysDepartmentHandler) Edit(w http.ResponseWriter, r *http.Request) {
	vars := r.URL.Query()
	id := util.DefaultInt(vars, "id", 0)
	vm := &db.SysDepartment{Sort: 6666}
	if id > 0 {
		vm, _ = systemservice.GetSysDepartment(r.Context(), int32(id))
	}
	tpl.HTML(w, r, "department/edit.tmpl", map[string]any{
		"Item": vm,
	})
}

func (h *SysDepartmentHandler) Save(w http.ResponseWriter, r *http.Request) {
	id := util.ConvertInt(r.PostFormValue("ID"), 0)
	ParentID := util.ConvertInt(r.PostFormValue("ParentID"), 0)
	name := r.PostFormValue("Name")
	sort := util.ConvertInt(r.PostFormValue("Sort"), 6666)
	status := util.ConvertInt(r.PostFormValue("Status"), 9999)

	ctx := r.Context()
	var parent *db.SysDepartment
	if ParentID > 0 {
		var err error
		parent, err = systemservice.GetSysDepartment(ctx, int32(ParentID))
		if err != nil {
			tpl.JSON(w, tpl.Response{Success: false, Message: "父级节点错误"})
			return
		}
	}

	if id == 0 {
		arg := db.CreateSysDepartmentParams{
			Name:       name,
			ParentID:   int32(ParentID),
			ParentPath: fmt.Sprintf("%s,%d,", parent.ParentPath, parent.ID),
			Status:     int32(status),
			Sort:       int32(sort),
			CreatedAt:  time.Now(),
			UpdatedAt:  time.Now(),
		}
		_, err := systemservice.CreateSysDepartment(ctx, &arg)
		if err != nil {
			if db.IsUniqueViolation(err) {
				tpl.JSON(w, tpl.Response{Success: false, Message: "部门名称已存在"})
				return
			}
			tpl.JSON(w, tpl.Response{Success: false, Message: err.Error()})
			return
		}

		tpl.JSON(w, tpl.Response{Success: true, Message: "添加成功"})
	} else {
		res, err := systemservice.GetSysDepartment(ctx, int32(id))
		if err != nil {
			tpl.JSON(w, tpl.Response{Success: false, Message: err.Error()})
			return
		}

		arg := &db.UpdateSysDepartmentParams{
			ID:         res.ID,
			Name:       name,
			ParentID:   int32(ParentID),
			ParentPath: fmt.Sprintf("%s,%d,", parent.ParentPath, parent.ID),
			Status:     int32(status),
			Sort:       int32(sort),
			UpdatedAt:  time.Now(),
		}
		_, err = systemservice.UpdateSysDepartment(ctx, arg)
		if err != nil {
			tpl.JSON(w, tpl.Response{Success: false, Message: err.Error()})
			return
		}

		tpl.JSON(w, tpl.Response{Success: true, Message: "更新成功"})
	}
}

func (h *SysDepartmentHandler) DTree(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	res, err := systemservice.DTreeSysDepartment(ctx, 0)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	rsp := tpl.ResponseDtree{
		Status: tpl.ResponseDtreeStatus{
			Code:    200,
			Message: "OK",
		},
		Data: res,
	}
	tpl.JSON(w, rsp)
}

func (h *SysDepartmentHandler) Refresh(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	err := systemservice.RefreshSysDepartment(ctx)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	tpl.JSON(w, tpl.Response{Success: true, Message: "刷新成功"})
}

func (h *SysDepartmentHandler) RebuildParentPath(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	err := systemservice.RebuildSysDepartmentParentPath(ctx)
	if err != nil {
		tpl.JSON(w, tpl.Response{Success: false, Message: err.Error()})
		return
	}

	tpl.JSON(w, tpl.Response{Success: true, Message: "重建成功"})
}