package handlers

import (
	"strconv"

	"github.com/SamuelTariku/FortuneBet-Backend/internal/domain"
	"github.com/gofiber/fiber/v2"
)

// CreateTelebirrPaymentHandler initializes a payment session with Telebirr.
//
// @Summary      Create Telebirr Payment Session
// @Description  Generates a payment URL using Telebirr and returns it to the client.
// @Tags         Telebirr
// @Accept       json
// @Produce      json
// @Param        request  body      domain.GeneratePaymentURLInput  true  "Telebirr payment request payload"
// @Success      200      {object}  domain.Response
// @Failure      400      {object}  domain.ErrorResponse
// @Failure      500      {object}  domain.ErrorResponse
// @Router       /api/v1/telebirr/payment [post]
func (h *Handler) CreateTelebirrPaymentHandler(c *fiber.Ctx) error {
	var req domain.TelebirrPreOrderRequestPayload
	if err := c.BodyParser(&req); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{
			Error:   err.Error(),
			Message: "Invalid request payload",
		})
	}
	totalAmount, err := strconv.ParseFloat(req.BizContent.TotalAmount, 32)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{
			Error:   err.Error(),
			Message: "TotalAmount must be a valid number",
		})
	}
	userID, ok := c.Locals("user_id").(int64)
	if !ok {
		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{
			Error:   "Invalid user_id type",
			Message: "user_id must be an int64",
		})
	}
	paymentURL, err := h.telebirrSvc.CreateTelebirrOrder(req.BizContent.Title, float32(totalAmount), userID)
	if err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(domain.ErrorResponse{
			Error:   err.Error(),
			Message: "Failed to create Telebirr payment session",
		})
	}

	return c.Status(fiber.StatusOK).JSON(domain.Response{
		Message:    "Telebirr payment URL generated successfully",
		Data:       paymentURL,
		Success:    true,
		StatusCode: fiber.StatusOK,
	})
}

// HandleTelebirrCallbackHandler handles the Telebirr payment callback.
//
// @Summary      Handle Telebirr Payment Callback
// @Description  Processes the Telebirr payment result and updates wallet balance.
// @Tags         Telebirr
// @Accept       json
// @Produce      json
// @Param        payload  body      domain.TelebirrPaymentCallbackPayload  true  "Callback payload from Telebirr"
// @Success      200      {object}  domain.Response
// @Failure      400      {object}  domain.ErrorResponse
// @Failure      500      {object}  domain.ErrorResponse
// @Router       /api/v1/telebirr/callback [post]
func (h *Handler) HandleTelebirrCallback(c *fiber.Ctx) error {
	var payload domain.TelebirrPaymentCallbackPayload

	if err := c.BodyParser(&payload); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{
			Error:   err.Error(),
			Message: "Invalid callback payload",
		})
	}

	ctx := c.Context()

	err := h.telebirrSvc.HandleTelebirrPaymentCallback(ctx, &payload)
	if err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(domain.ErrorResponse{
			Error:   err.Error(),
			Message: "Failed to handle Telebirr payment callback",
		})
	}

	return c.Status(fiber.StatusOK).JSON(domain.Response{
		Message:    "Telebirr payment processed successfully",
		Data:       nil,
		Success:    true,
		StatusCode: fiber.StatusOK,
	})
}