package handlers

import (
	"log"
	"strconv"
	"strings"

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

// GetPreMatchOdds godoc
// @Summary      Get pre-match odds for an event
// @Description  Fetches pre-match odds from EnetPulse for a given event
// @Tags         EnetPulse - PreMatch
// @Accept       json
// @Produce      json
// @Param        objectFK query int true "Event ID"
// @Param        oddsProviderFK query []int false "Odds provider IDs (comma separated)"
// @Param        outcomeTypeFK query int false "Outcome type ID"
// @Param        outcomeScopeFK query int false "Outcome scope ID"
// @Param        outcomeSubtypeFK query int false "Outcome subtype ID"
// @Param        limit query int false "Limit results"
// @Param        offset query int false "Offset results"
// @Param        languageTypeFK query int false "Language type ID"
// @Success      200 {object} domain.Response{data=domain.PreMatchOddsResponse}
// @Failure      400 {object} domain.ErrorResponse
// @Failure      502 {object} domain.ErrorResponse
// @Router       /api/v1/odds/pre-match [get]
func (h *Handler) GetPreMatchOdds(c *fiber.Ctx) error {
	// Parse query parameters
	objectFK := c.QueryInt("objectFK")
	if objectFK == 0 {
		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{
			Message: "Event ID (objectFK) is required",
			Error:   "missing or invalid objectFK",
		})
	}

	params := domain.PreMatchOddsRequest{
		ObjectFK:         int64(objectFK),
		OddsProviderFK:   intSliceToInt64Slice(parseIntSlice(c.Query("oddsProviderFK"))), // convert []int to []int64
		OutcomeTypeFK:    int64(c.QueryInt("outcomeTypeFK")),
		OutcomeScopeFK:   int64(c.QueryInt("outcomeScopeFK")),
		OutcomeSubtypeFK: int64(c.QueryInt("outcomeSubtypeFK")),
		Limit:            c.QueryInt("limit"),
		Offset:           c.QueryInt("offset"),
		LanguageTypeFK:   int64(c.QueryInt("languageTypeFK")),
	}

	// Call service
	res, err := h.enetPulseSvc.FetchPreMatchOdds(c.Context(), params)
	if err != nil {
		log.Println("FetchPreMatchOdds error:", err)
		return c.Status(fiber.StatusBadGateway).JSON(domain.ErrorResponse{
			Message: "Failed to fetch pre-match odds",
			Error:   err.Error(),
		})
	}

	return c.Status(fiber.StatusOK).JSON(domain.Response{
		Message:    "Pre-match odds fetched successfully",
		Data:       res,
		StatusCode: fiber.StatusOK,
		Success:    true,
	})
}

// Helper: parse comma-separated string into []int
func parseIntSlice(input string) []int {
	if input == "" {
		return nil
	}
	parts := strings.Split(input, ",")
	result := make([]int, 0, len(parts))
	for _, p := range parts {
		if n, err := strconv.Atoi(strings.TrimSpace(p)); err == nil {
			result = append(result, n)
		}
	}
	return result
}

// Helper: convert []int to []int64
func intSliceToInt64Slice(input []int) []int64 {
	if input == nil {
		return nil
	}
	result := make([]int64, len(input))
	for i, v := range input {
		result[i] = int64(v)
	}
	return result
}