package province

import (
	"cargo-erp-backend/internal/handlers/dto"
	"cargo-erp-backend/internal/usecases"
	"cargo-erp-backend/pkg/helpers"
	"cargo-erp-backend/pkg/response"
	"net/http"
	"strconv"

	"github.com/gin-gonic/gin"
)

type ProvinceHandlerInterface interface {
	Router()
}

type ProvinceHandler struct {
	Helper helpers.HelperInterface
	Group  *gin.RouterGroup
}

func NewProvinceHandler(helper helpers.HelperInterface, g *gin.RouterGroup) ProvinceHandlerInterface {
	return &ProvinceHandler{Helper: helper, Group: g}
}

func (h *ProvinceHandler) Router() {
	r := h.Group.Group("provinces")
	{
		r.GET("/", h.GetAll)
		r.POST("/list", h.GetList)
		r.GET("/:id", h.GetByID)
		r.POST("/", h.Create)
		r.PUT("/:id", h.Update)
		r.DELETE("/:id", h.Delete)
	}
}

func (h *ProvinceHandler) GetAll(c *gin.Context) {
	userid, err := h.Helper.GetAuthInfo(c.GetString("auth"))
	if err != nil {
		response.Error(c, http.StatusUnauthorized, err.Error())
		return
	}
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	limit, _ := strconv.Atoi(c.DefaultQuery("limit", "10"))

	if page < 1 {
		page = 1
	}
	if limit < 1 {
		limit = 10
	}

	u := usecases.NewProvinceUsecase(h.Helper, *userid)
	provinces, total, err := u.GetAll(page, limit)
	if err != nil {
		response.Error(c, http.StatusInternalServerError, err.Error())
		return
	}

	response.PaginatedResponse(c, provinces, int(total), page, limit)
}

func (h *ProvinceHandler) GetList(c *gin.Context) {
	userid, err := h.Helper.GetAuthInfo(c.GetString("auth"))
	if err != nil {
		response.Error(c, http.StatusUnauthorized, err.Error())
		return
	}

	var req dto.DataTableRequest

	// 1. Bind JSON request otomatis ke struct
	if err := c.ShouldBindJSON(&req); err != nil {
		response.Error(c, http.StatusBadRequest, "Request Format request invalid")
		return
	}
	u := usecases.NewProvinceUsecase(h.Helper, *userid)
	res, err := u.GetList(req)
	if err != nil {
		response.Error(c, http.StatusInternalServerError, err.Error())
		return
	}
	response.Success(c, res)
	return
}

func (h *ProvinceHandler) GetByID(c *gin.Context) {
	userid, err := h.Helper.GetAuthInfo(c.GetString("auth"))
	if err != nil {
		response.Error(c, http.StatusUnauthorized, err.Error())
		return
	}
	id := c.Param("id")

	u := usecases.NewProvinceUsecase(h.Helper, *userid)
	province, err := u.GetByID(id)
	if err != nil {
		response.Error(c, http.StatusNotFound, "province not found")
		return
	}

	response.Success(c, province)
}

func (h *ProvinceHandler) Create(c *gin.Context) {
	var req dto.CreateProvinceRequest
	if err := c.BindJSON(&req); err != nil {
		response.Error(c, http.StatusBadRequest, err.Error())
		return
	}
	userid, err := h.Helper.GetAuthInfo(c.GetString("auth"))
	if err != nil {
		response.Error(c, http.StatusUnauthorized, err.Error())
		return
	}
	var merchantid *string = nil
	if userid.UsersRole_Relation.RoleKey != "SPM" {
		merchantid = userid.MerchantID
	}
	createdBy := userid.ID

	u := usecases.NewProvinceUsecase(h.Helper, *userid)
	province, err := u.Create(req.Name, createdBy, merchantid)
	if err != nil {
		response.Error(c, http.StatusInternalServerError, err.Error())
		return
	}
	var responseDTO dto.CreateProvinceResponse
	h.Helper.MapStructToStruct(province, "json", &responseDTO, "json")
	response.Created(c, responseDTO)
}

func (h *ProvinceHandler) Update(c *gin.Context) {
	id := c.Param("id")

	var req dto.UpdateProvinceRequest
	if err := c.BindJSON(&req); err != nil {
		response.Error(c, http.StatusBadRequest, err.Error())
		return
	}
	userid, err := h.Helper.GetAuthInfo(c.GetString("auth"))
	if err != nil {
		response.Error(c, http.StatusUnauthorized, err.Error())
		return
	}
	updatedBy := userid.ID

	u := usecases.NewProvinceUsecase(h.Helper, *userid)
	province, err := u.Update(id, req.Name, updatedBy)
	if err != nil {
		response.Error(c, http.StatusInternalServerError, err.Error())
		return
	}

	response.Success(c, province)
}

func (h *ProvinceHandler) Delete(c *gin.Context) {
	userid, err := h.Helper.GetAuthInfo(c.GetString("auth"))
	if err != nil {
		response.Error(c, http.StatusUnauthorized, err.Error())
		return
	}
	id := c.Param("id")
	u := usecases.NewProvinceUsecase(h.Helper, *userid)
	if err := u.Delete(id); err != nil {
		response.Error(c, http.StatusInternalServerError, err.Error())
		return
	}

	response.Success(c, map[string]interface{}{"message": "province deleted"})
}