package controller

import (
	"jaecoo-be/app/module/promotions/request"
	"jaecoo-be/app/module/promotions/service"
	"jaecoo-be/utils/paginator"
	"strconv"

	"github.com/gofiber/fiber/v2"

	utilRes "jaecoo-be/utils/response"
	utilVal "jaecoo-be/utils/validator"
)

type promotionsController struct {
	promotionsService service.PromotionsService
}

type PromotionsController interface {
	All(c *fiber.Ctx) error
	Show(c *fiber.Ctx) error
	Save(c *fiber.Ctx) error
	Update(c *fiber.Ctx) error
	Delete(c *fiber.Ctx) error
	Approve(c *fiber.Ctx) error
	Reject(c *fiber.Ctx) error
	Comment(c *fiber.Ctx) error
	Viewer(c *fiber.Ctx) error
}

func NewPromotionsController(promotionsService service.PromotionsService) PromotionsController {
	return &promotionsController{
		promotionsService: promotionsService,
	}
}

// All Promotions
// @Summary      Get all Promotions
// @Description  API for getting all Promotions
// @Tags         Promotions
// @Security     Bearer
// @Param        X-Client-Key header string true "Insert the X-Client-Key"
// @Param 	     req query request.PromotionsQueryRequestContext false "query parameters"
// @Param 	     req query paginator.Pagination false "pagination parameters"
// @Success      200  {object}  response.Response
// @Failure      400  {object}  response.BadRequestError
// @Failure      401  {object}  response.UnauthorizedError
// @Failure      500  {object}  response.InternalServerError
// @Router       /promotions [get]
func (_i *promotionsController) All(c *fiber.Ctx) error {
	paginate, err := paginator.Paginate(c)
	if err != nil {
		return err
	}

	reqContext := request.PromotionsQueryRequestContext{
		Title: c.Query("title"),
	}
	req := reqContext.ToParamRequest()
	req.Pagination = paginate

	promotionsData, paging, err := _i.promotionsService.GetAll(req)
	if err != nil {
		return err
	}

	return utilRes.Resp(c, utilRes.Response{
		Success:  true,
		Messages: utilRes.Messages{"Promotions list successfully retrieved"},
		Data:     promotionsData,
		Meta:     paging,
	})
}

// Show Promotion
// @Summary      Get Promotion by ID
// @Description  API for getting Promotion by ID
// @Tags         Promotions
// @Security     Bearer
// @Param        X-Client-Key header string true "Insert the X-Client-Key"
// @Param        id path int true "Promotion ID"
// @Success      200  {object}  response.Response
// @Failure      400  {object}  response.BadRequestError
// @Failure      401  {object}  response.UnauthorizedError
// @Failure      500  {object}  response.InternalServerError
// @Router       /promotions/{id} [get]
func (_i *promotionsController) Show(c *fiber.Ctx) error {
	id, err := strconv.ParseUint(c.Params("id"), 10, 0)
	if err != nil {
		return err
	}

	promotionData, err := _i.promotionsService.GetOne(uint(id))
	if err != nil {
		return err
	}

	return utilRes.Resp(c, utilRes.Response{
		Success:  true,
		Messages: utilRes.Messages{"Promotion successfully retrieved"},
		Data:     promotionData,
	})
}

// Save Promotion
// @Summary      Create Promotion
// @Description  API for creating Promotion with file upload
// @Tags         Promotions
// @Security     Bearer
// @Param        X-Client-Key header string true "Insert the X-Client-Key"
// @Param        file formData file false "Upload file"
// @Param        title formData string true "Promotion title"
// @Param        description formData string false "Promotion description"
// @Success      200  {object}  response.Response
// @Failure      400  {object}  response.BadRequestError
// @Failure      401  {object}  response.UnauthorizedError
// @Failure      500  {object}  response.InternalServerError
// @Router       /promotions [post]
func (_i *promotionsController) Save(c *fiber.Ctx) error {
	// Parse multipart form
	form, err := c.MultipartForm()
	if err != nil {
		return utilRes.Resp(c, utilRes.Response{
			Success:  false,
			Messages: utilRes.Messages{"Failed to parse form data"},
		})
	}

	// Extract form values
	req := request.PromotionsCreateRequest{
		Title: c.FormValue("title"),
	}

	if description := c.FormValue("description"); description != "" {
		req.Description = &description
	}

	// Validate required fields
	if req.Title == "" {
		return utilRes.Resp(c, utilRes.Response{
			Success:  false,
			Messages: utilRes.Messages{"Title is required"},
		})
	}

	// Check if file is uploaded
	if len(form.File["file"]) > 0 {
		// File will be handled in service
	}

	dataResult, err := _i.promotionsService.Create(c, req)
	if err != nil {
		return err
	}

	return utilRes.Resp(c, utilRes.Response{
		Success:  true,
		Messages: utilRes.Messages{"Promotion successfully created"},
		Data:     dataResult,
	})
}

// Update Promotion
// @Summary      Update Promotion
// @Description  API for updating Promotion
// @Tags         Promotions
// @Security     Bearer
// @Param        X-Client-Key header string true "Insert the X-Client-Key"
// @Param        id path int true "Promotion ID"
// @Param 	     payload body request.PromotionsUpdateRequest true "Required payload"
// @Success      200  {object}  response.Response
// @Failure      400  {object}  response.BadRequestError
// @Failure      401  {object}  response.UnauthorizedError
// @Failure      500  {object}  response.InternalServerError
// @Router       /promotions/{id} [put]
func (_i *promotionsController) Update(c *fiber.Ctx) error {
	id, err := strconv.ParseUint(c.Params("id"), 10, 0)
	if err != nil {
		return err
	}

	req := new(request.PromotionsUpdateRequest)
	if err := utilVal.ParseAndValidate(c, req); err != nil {
		return err
	}

	dataResult, err := _i.promotionsService.Update(uint(id), *req)
	if err != nil {
		return err
	}

	return utilRes.Resp(c, utilRes.Response{
		Success:  true,
		Messages: utilRes.Messages{"Promotion successfully updated"},
		Data:     dataResult,
	})
}

// Delete Promotion
// @Summary      Delete Promotion
// @Description  API for deleting Promotion (soft delete)
// @Tags         Promotions
// @Security     Bearer
// @Param        X-Client-Key header string true "Insert the X-Client-Key"
// @Param        id path int true "Promotion ID"
// @Success      200  {object}  response.Response
// @Failure      400  {object}  response.BadRequestError
// @Failure      401  {object}  response.UnauthorizedError
// @Failure      500  {object}  response.InternalServerError
// @Router       /promotions/{id} [delete]
func (_i *promotionsController) Delete(c *fiber.Ctx) error {
	id, err := strconv.ParseUint(c.Params("id"), 10, 0)
	if err != nil {
		return err
	}

	err = _i.promotionsService.Delete(uint(id))
	if err != nil {
		return err
	}

	return utilRes.Resp(c, utilRes.Response{
		Success:  true,
		Messages: utilRes.Messages{"Promotion successfully deleted"},
	})
}

// Approve Promotion
// @Summary      Approve Promotion
// @Description  API for approving Promotion (only for admin with roleId = 1)
// @Tags         Promotions
// @Security     Bearer
// @Param        X-Client-Key header string true "Insert the X-Client-Key"
// @Param        id path int true "Promotion ID"
// @Success      200  {object}  response.Response
// @Failure      400  {object}  response.BadRequestError
// @Failure      401  {object}  response.UnauthorizedError
// @Failure      500  {object}  response.InternalServerError
// @Router       /promotions/{id}/approve [put]
func (_i *promotionsController) Approve(c *fiber.Ctx) error {
	id, err := strconv.ParseUint(c.Params("id"), 10, 0)
	if err != nil {
		return err
	}

	// Get token from Authorization header
	authToken := c.Get("Authorization")
	if authToken == "" {
		return utilRes.Resp(c, utilRes.Response{
			Success:  false,
			Messages: utilRes.Messages{"Unauthorized: token not found"},
		})
	}

	promotionData, err := _i.promotionsService.Approve(uint(id), authToken)
	if err != nil {
		return err
	}

	return utilRes.Resp(c, utilRes.Response{
		Success:  true,
		Messages: utilRes.Messages{"Promotion successfully approved"},
		Data:     promotionData,
	})
}

// Reject Promotion
// @Summary      Reject Promotion
// @Description  API for rejecting Promotion (only for admin with roleId = 1)
// @Tags         Promotions
// @Security     Bearer
// @Param        X-Client-Key header string true "Insert the X-Client-Key"
// @Param        id path int true "Promotion ID"
// @Param        message body string false "Rejection message"
// @Success      200  {object}  response.Response
// @Failure      400  {object}  response.BadRequestError
// @Failure      401  {object}  response.UnauthorizedError
// @Failure      500  {object}  response.InternalServerError
// @Router       /promotions/{id}/reject [put]
func (_i *promotionsController) Reject(c *fiber.Ctx) error {
	id, err := strconv.ParseUint(c.Params("id"), 10, 0)
	if err != nil {
		return err
	}

	// Get token from Authorization header
	authToken := c.Get("Authorization")
	if authToken == "" {
		return utilRes.Resp(c, utilRes.Response{
			Success:  false,
			Messages: utilRes.Messages{"Unauthorized: token not found"},
		})
	}

	// Get optional message from request body
	var body struct {
		Message *string `json:"message"`
	}
	if err := c.BodyParser(&body); err != nil {
		body.Message = nil
	}

	promotionData, err := _i.promotionsService.Reject(uint(id), authToken, body.Message)
	if err != nil {
		return err
	}

	return utilRes.Resp(c, utilRes.Response{
		Success:  true,
		Messages: utilRes.Messages{"Promotion successfully rejected"},
		Data:     promotionData,
	})
}

// Comment Banner
// @Summary      Comment Banner
// @Description  API for comment Banner (only admin)
// @Tags         Banners
// @Security     BearerAuth
// @Param        id path int true "Banner ID"
// @Param        body body request.CommentRequest true "Comment payload"
// @Success      200 {object} response.Response
// @Router       /promotions/{id}/comment [put]
func (_i *promotionsController) Comment(c *fiber.Ctx) error {
	id, err := strconv.ParseUint(c.Params("id"), 10, 0)
	if err != nil {
		return err
	}

	authToken := c.Get("Authorization")
	if authToken == "" {
		return utilRes.Resp(c, utilRes.Response{
			Success:  false,
			Messages: utilRes.Messages{"Unauthorized"},
		})
	}

	var req request.CommentRequest
	if err := c.BodyParser(&req); err != nil {
		return utilRes.Resp(c, utilRes.Response{
			Success:  false,
			Messages: utilRes.Messages{"Invalid request"},
		})
	}

	bannerData, err := _i.promotionsService.Comment(uint(id), authToken, &req.Message)
	if err != nil {
		return err
	}

	return utilRes.Resp(c, utilRes.Response{
		Success:  true,
		Messages: utilRes.Messages{"Komentar berhasil disimpan"},
		Data:     bannerData,
	})
}

// Viewer Promotion
// @Summary      Viewer Promotion
// @Description  API for viewing Promotion file
// @Tags         Promotions
// @Security     Bearer
// @Param        X-Client-Key header string true "Insert the X-Client-Key"
// @Param        filename path string true "Promotion File Name (e.g., user_277788.png)"
// @Success      200  {file}  file
// @Failure      400  {object}  response.BadRequestError
// @Failure      401  {object}  response.UnauthorizedError
// @Failure      500  {object}  response.InternalServerError
// @Router       /promotions/viewer/{filename} [get]
func (_i *promotionsController) Viewer(c *fiber.Ctx) error {
	return _i.promotionsService.Viewer(c)
}