feat[BE]: implement customer payment report retrieval with pagination and filtering

internal/modules/repports/controllers/repport.controller.go

@@ -242,6 +242,60 @@ func (c *RepportController) GetHppPerKandang(ctx *fiber.Ctx) error {
 	return ctx.Status(fiber.StatusOK).JSON(resp)
 }
 
+func (c *RepportController) GetCustomerPayment(ctx *fiber.Ctx) error {
+	var customerID *uint
+	if customerIDStr := ctx.Query("customer_id"); customerIDStr != "" {
+		if id, err := strconv.ParseUint(customerIDStr, 10, 32); err == nil {
+			cid := uint(id)
+			customerID = &cid
+		}
+	}
+
+	query := &validation.CustomerPaymentQuery{
+		Page:       ctx.QueryInt("page", 1),
+		Limit:      ctx.QueryInt("limit", 10),
+		CustomerID: customerID,
+		StartDate:  ctx.Query("start_date", ""),
+		EndDate:    ctx.Query("end_date", ""),
+	}
+
+	// Validate pagination
+	if customerID == nil && (query.Page < 1 || query.Limit < 1) {
+		return fiber.NewError(fiber.StatusBadRequest, "page and limit must be greater than 0")
+	}
+
+	result, totalResults, err := c.RepportService.GetCustomerPayment(ctx, query)
+	if err != nil {
+		return err
+	}
+
+	// If single customer mode, return without pagination
+	if customerID != nil {
+		return ctx.Status(fiber.StatusOK).
+			JSON(response.Success{
+				Code:    fiber.StatusOK,
+				Status:  "success",
+				Message: "Get customer payment report successfully",
+				Data:    result,
+			})
+	}
+
+	// Multiple customers mode with pagination
+	return ctx.Status(fiber.StatusOK).
+		JSON(response.SuccessWithPaginate[dto.CustomerPaymentReportItem]{
+			Code:    fiber.StatusOK,
+			Status:  "success",
+			Message: "Get customer payment report successfully",
+			Meta: response.Meta{
+				Page:         query.Page,
+				Limit:        query.Limit,
+				TotalPages:   int64(math.Ceil(float64(totalResults) / float64(query.Limit))),
+				TotalResults: totalResults,
+			},
+			Data: result,
+		})
+}
+
 func (c *RepportController) GetProductionResult(ctx *fiber.Ctx) error {
 	idParam := ctx.Params("idProjectFlockKandang")
 	if idParam == "" {
@@ -283,36 +337,6 @@ func (c *RepportController) GetProductionResult(ctx *fiber.Ctx) error {
 		})
 }
 
-func (c *RepportController) GetCustomerPayment(ctx *fiber.Ctx) error {
-	page := ctx.QueryInt("page", 1)
-	limit := ctx.QueryInt("limit", 10)
-
-	if page < 1 || limit < 1 {
-		return fiber.NewError(fiber.StatusBadRequest, "page and limit must be greater than 0")
-	}
-	
-	
-	
-	
-
-	data := []dto.CustomerPaymentReportItem{}
-	totalResults := int64(0)
-
-	return ctx.Status(fiber.StatusOK).
-		JSON(response.SuccessWithPaginate[dto.CustomerPaymentReportItem]{
-			Code:    fiber.StatusOK,
-			Status:  "success",
-			Message: "Get customer payment report successfully",
-			Meta: response.Meta{
-				Page:         page,
-				Limit:        limit,
-				TotalPages:   int64(math.Ceil(float64(totalResults) / float64(limit))),
-				TotalResults: totalResults,
-			},
-			Data: data,
-		})
-}
-
 func parseCommaSeparatedInt64s(raw string) ([]int64, error) {
 	raw = strings.TrimSpace(raw)
 	if raw == "" {