package handlers

import (
	"strconv"

	"github.com/SamuelTariku/FortuneBet-Backend/internal/domain"
	"github.com/gofiber/fiber/v2"
	"go.uber.org/zap"
)

// @Summary Create a new bank
// @Tags Institutions - Banks
// @Accept json
// @Produce json
// @Param bank body domain.Bank true "Bank Info"
// @Success 201 {object} domain.Bank
// @Failure 400 {object} domain.ErrorResponse
// @Router /api/v1/banks [post]
func (h *Handler) CreateBank(c *fiber.Ctx) error {
	var bank domain.Bank
	if err := c.BodyParser(&bank); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "invalid payload"})
	}

	err := h.instSvc.Create(c.Context(), &bank)
	if err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": err.Error()})
	}
	return c.Status(fiber.StatusCreated).JSON(bank)
}

// @Summary Get a bank by ID
// @Tags Institutions - Banks
// @Produce json
// @Param id path int true "Bank ID"
// @Success 200 {object} domain.Bank
// @Failure 400 {object} domain.ErrorResponse
// @Failure 404 {object} domain.ErrorResponse
// @Failure 500 {object} domain.ErrorResponse
// @Router /api/v1/banks/{id} [get]
func (h *Handler) GetBankByID(c *fiber.Ctx) error {
	id, err := c.ParamsInt("id")
	if err != nil || id <= 0 {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "invalid bank ID"})
	}

	bank, err := h.instSvc.GetByID(c.Context(), int64(id))
	if err != nil {
		return c.Status(fiber.StatusNotFound).JSON(fiber.Map{"error": "bank not found"})
	}

	return c.JSON(bank)
}

// @Summary Update a bank
// @Tags Institutions - Banks
// @Accept json
// @Produce json
// @Param id path int true "Bank ID"
// @Param bank body domain.Bank true "Bank Info"
// @Success 200 {object} domain.Bank
// @Failure 400 {object} domain.ErrorResponse
// @Failure 404 {object} domain.ErrorResponse
// @Failure 500 {object} domain.ErrorResponse
// @Router /api/v1/banks/{id} [put]
func (h *Handler) UpdateBank(c *fiber.Ctx) error {
	id, err := c.ParamsInt("id")
	if err != nil || id <= 0 {
		// return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "invalid bank ID"})
		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{
			Message: "Failed to update bank",
			Error:   err.Error(),
		})
	}

	var bank domain.Bank
	if err := c.BodyParser(&bank); err != nil {
		// return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "invalid payload"})
		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{
			Message: "Failed to update bank",
			Error:   err.Error(),
		})
	}
	bank.ID = id

	err = h.instSvc.Update(c.Context(), &bank)
	if err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(domain.ErrorResponse{
			Message: "Failed to update bank",
			Error:   err.Error(),
		})
	}

	return c.Status(fiber.StatusOK).JSON(domain.Response{
		Message:    "Bank updated successfully",
		StatusCode: fiber.StatusOK,
		Success:    true,
		Data:       bank,
	})
	// return c.JSON(bank)
}

// @Summary Delete a bank
// @Tags Institutions - Banks
// @Produce json
// @Param id path int true "Bank ID"
// @Success 204 {string} string "Deleted successfully"
// @Failure 400 {object} domain.ErrorResponse
// @Failure 404 {object} domain.ErrorResponse
// @Failure 500 {object} domain.ErrorResponse
// @Router /api/v1/banks/{id} [delete]
func (h *Handler) DeleteBank(c *fiber.Ctx) error {
	id, err := c.ParamsInt("id")
	if err != nil || id <= 0 {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "invalid bank ID"})
	}

	err = h.instSvc.Delete(c.Context(), int64(id))
	if err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": err.Error()})
	}

	return c.SendStatus(fiber.StatusNoContent)
}

// @Summary List all banks with pagination and filtering
// @Tags Institutions - Banks
// @Produce json
// @Param country_id query integer false "Filter by country ID"
// @Param is_active query boolean false "Filter by active status"
// @Param search query string false "Search term for bank name or code"
// @Param page query integer false "Page number" default(1)
// @Param page_size query integer false "Items per page" default(50) maximum(100)
// @Success 200 {object} domain.InstResponse
// @Failure 400 {object} domain.ErrorResponse
// @Failure 500 {object} domain.ErrorResponse
// @Router /api/v1/banks [get]
func (h *Handler) ListBanks(c *fiber.Ctx) error {
	// Parse query parameters
	countryID, _ := strconv.Atoi(c.Query("country_id"))
	var countryIDPtr *int
	if c.Query("country_id") != "" {
		countryIDPtr = &countryID
	}

	isActive, _ := strconv.ParseBool(c.Query("is_active"))
	var isActivePtr *bool
	if c.Query("is_active") != "" {
		isActivePtr = &isActive
	}

	var searchTermPtr *string
	if searchTerm := c.Query("search"); searchTerm != "" {
		searchTermPtr = &searchTerm
	}

	page, _ := strconv.Atoi(c.Query("page", "1"))
	pageSize, _ := strconv.Atoi(c.Query("page_size", "50"))

	banks, pagination, err := h.instSvc.List(
		c.Context(),
		countryIDPtr,
		isActivePtr,
		searchTermPtr,
		page,
		pageSize,
	)
	if err != nil {
		h.mongoLoggerSvc.Error("failed to list banks",
			zap.Error(err),
			zap.Any("query_params", c.Queries()),
		)
		return c.Status(fiber.StatusInternalServerError).JSON(domain.ErrorResponse{
			Message: "Failed to retrieve banks",
			Error:   err.Error(),
		})
	}

	return c.Status(fiber.StatusOK).JSON(domain.InstResponse{
		Message:    "Banks retrieved successfully",
		Status:     "success",
		Data:       banks,
		Pagination: pagination,
	})
}