package controller

import (
	"net/http"

	"github.com/Caknoooo/go-gin-clean-starter/modules/product/dto"
	"github.com/Caknoooo/go-gin-clean-starter/modules/product/query"
	"github.com/Caknoooo/go-gin-clean-starter/modules/product/service"
	"github.com/Caknoooo/go-gin-clean-starter/pkg/constants"
	"github.com/Caknoooo/go-gin-clean-starter/pkg/utils"
	"github.com/gin-gonic/gin"
	"github.com/samber/do"
	"gorm.io/gorm"
)

type (
	ProductController interface {
		Create(ctx *gin.Context)
		Update(ctx *gin.Context)
		Delete(ctx *gin.Context)
		GetById(ctx *gin.Context)
		GetAll(ctx *gin.Context)
		AssignCrossReference(ctx *gin.Context)
		RemoveCrossReference(ctx *gin.Context)
	}

	productController struct {
		productService service.ProductService
		db             *gorm.DB
	}
)

func NewProductController(i *do.Injector, productService service.ProductService) ProductController {
	db := do.MustInvokeNamed[*gorm.DB](i, constants.DB)
	return &productController{
		productService: productService,
		db:             db,
	}
}

func (c *productController) Create(ctx *gin.Context) {
	var req dto.ProductCreateRequest
	if err := ctx.ShouldBindJSON(&req); err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_DATA_FROM_BODY, err.Error(), nil)
		ctx.JSON(http.StatusBadRequest, res)
		return
	}
	created, err := c.productService.Create(ctx, req)
	if err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_CREATE_PRODUCT, err.Error(), nil)
		ctx.JSON(http.StatusInternalServerError, res)
		return
	}
	res := utils.BuildResponseSuccess(dto.MESSAGE_SUCCESS_CREATE_PRODUCT, created)
	ctx.JSON(http.StatusOK, res)
}

func (c *productController) Update(ctx *gin.Context) {
	id := ctx.Param("id")
	var req dto.ProductUpdateRequest
	if err := ctx.ShouldBindJSON(&req); err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_DATA_FROM_BODY, err.Error(), nil)
		ctx.JSON(http.StatusBadRequest, res)
		return
	}
	updated, err := c.productService.Update(ctx, req, id)
	if err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_UPDATE_PRODUCT, err.Error(), nil)
		ctx.JSON(http.StatusInternalServerError, res)
		return
	}
	res := utils.BuildResponseSuccess(dto.MESSAGE_SUCCESS_UPDATE_PRODUCT, updated)
	ctx.JSON(http.StatusOK, res)
}

func (c *productController) Delete(ctx *gin.Context) {
	id := ctx.Param("id")
	if err := c.productService.Delete(ctx, id); err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_DELETE_PRODUCT, err.Error(), nil)
		ctx.JSON(http.StatusInternalServerError, res)
		return
	}
	res := utils.BuildResponseSuccess(dto.MESSAGE_SUCCESS_DELETE_PRODUCT, nil)
	ctx.JSON(http.StatusOK, res)
}

func (c *productController) GetById(ctx *gin.Context) {
	id := ctx.Param("id")
	product, err := c.productService.GetById(ctx, id)
	if err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_PRODUCT, err.Error(), nil)
		ctx.JSON(http.StatusNotFound, res)
		return
	}
	res := utils.BuildResponseSuccess(dto.MESSAGE_SUCCESS_GET_PRODUCT, product)
	ctx.JSON(http.StatusOK, res)
}

func (c *productController) GetAll(ctx *gin.Context) {
	var filter query.ProductFilter
	if err := ctx.ShouldBindQuery(&filter); err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_PRODUCT, err.Error(), nil)
		ctx.JSON(http.StatusBadRequest, res)
		return
	}
	perPage := utils.ParseInt(ctx.DefaultQuery("per_page", "10"))
	page := utils.ParseInt(ctx.DefaultQuery("page", "1"))
	filter.PerPage = perPage
	filter.Page = (page - 1) * perPage
	products, total, err := c.productService.GetAll(ctx, filter)
	if err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_PRODUCT, err.Error(), nil)
		ctx.JSON(http.StatusBadRequest, res)
		return
	}
	paginationResponse := utils.BuildPaginationResponse(perPage, page, total)
	response := utils.BuildResponseSuccessWithPagination(http.StatusOK, dto.MESSAGE_SUCCESS_GET_PRODUCT, products, paginationResponse)
	ctx.JSON(http.StatusOK, response)
}

// AssignCrossReference implements ProductController.
func (c *productController) AssignCrossReference(ctx *gin.Context) {
	id := ctx.Param("id")
	var req dto.CrossReferenceRequest
	if err := ctx.ShouldBindJSON(&req); err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_DATA_FROM_BODY, err.Error(), nil)
		ctx.JSON(http.StatusBadRequest, res)
		return
	}
	if err := c.productService.AssignCrossReference(ctx, id, req.VendorIDs); err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_ASSIGN_CROSS_REF, dto.ErrAssignCrossRef.Error(), nil)
		ctx.JSON(http.StatusInternalServerError, res)
		return
	}
	res := utils.BuildResponseSuccess(dto.MESSAGE_SUCCESS_ASSIGN_CROSS_REF, nil)
	ctx.JSON(http.StatusOK, res)
}

// RemoveCrossReference implements ProductController.
func (c *productController) RemoveCrossReference(ctx *gin.Context) {
	id := ctx.Param("id")
	var req dto.CrossReferenceRequest
	if err := ctx.ShouldBindJSON(&req); err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_DATA_FROM_BODY, err.Error(), nil)
		ctx.JSON(http.StatusBadRequest, res)
		return
	}
	if err := c.productService.RemoveCrossReference(ctx, id, req.VendorIDs); err != nil {
		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_REMOVE_CROSS_REF, dto.ErrRemoveCrossRef.Error(), nil)
		ctx.JSON(http.StatusInternalServerError, res)
		return
	}
	res := utils.BuildResponseSuccess(dto.MESSAGE_SUCCESS_REMOVE_CROSS_REF, nil)
	ctx.JSON(http.StatusOK, res)
}