package odds

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"strconv"
	"time"

	"github.com/SamuelTariku/FortuneBet-Backend/internal/domain"
	"github.com/SamuelTariku/FortuneBet-Backend/internal/repository"
)

type ServiceImpl struct {
	token string
	store *repository.Store
}

func New(token string, store *repository.Store) *ServiceImpl {
	return &ServiceImpl{token: token, store: store}
}

func (s *ServiceImpl) FetchNonLiveOdds(ctx context.Context) error {
	sportIDs := []int{1, 13, 78, 18, 91, 16, 17}

	for _, sportID := range sportIDs {
		upcomingURL := fmt.Sprintf("https://api.b365api.com/v1/bet365/upcoming?sport_id=%d&token=%s", sportID, s.token)
		resp, err := http.Get(upcomingURL)
		if err != nil {
			fmt.Printf("❌ Failed to fetch upcoming for sport_id=%d: %v\n", sportID, err)
			continue
		}
		defer resp.Body.Close()

		body, _ := io.ReadAll(resp.Body)
		var data struct {
			Success int                      `json:"success"`
			Results []map[string]interface{} `json:"results"`
		}
		if err := json.Unmarshal(body, &data); err != nil || data.Success != 1 {
			fmt.Printf("❌ Failed to decode upcoming for sport_id=%d\nRaw: %s\n", sportID, string(body))
			continue
		}

		for _, ev := range data.Results {
			if getString(ev["type"]) != "EV" {
				continue
			}
			eventID := getString(ev["ID"])
			if eventID == "" {
				continue
			}

			prematchURL := fmt.Sprintf("https://api.b365api.com/v3/bet365/prematch?token=%s&FI=%s", s.token, eventID)
			oddsResp, err := http.Get(prematchURL)
			if err != nil {
				fmt.Printf("❌ Odds fetch failed for event_id=%s: %v\n", eventID, err)
				continue
			}
			defer oddsResp.Body.Close()

			oddsBody, _ := io.ReadAll(oddsResp.Body)
			var oddsData struct {
				Success int `json:"success"`
				Results []struct {
					EventID    string      `json:"event_id"`
					FI         string      `json:"FI"`
					AsianLines OddsSection `json:"asian_lines"`
					Goals      OddsSection `json:"goals"`
				} `json:"results"`
			}
			if err := json.Unmarshal(oddsBody, &oddsData); err != nil || oddsData.Success != 1 || len(oddsData.Results) == 0 {
				fmt.Printf("❌ Failed odds decode for event_id=%s\nRaw: %s\n", eventID, string(oddsBody))
				continue
			}

			result := oddsData.Results[0]
			finalID := result.EventID
			if finalID == "" {
				finalID = result.FI
			}
			if finalID == "" {
				fmt.Println("⚠️ Skipping event with missing final ID.")
				continue
			}

			saveOdds := func(sectionName string, section OddsSection) error {
				if len(section.Sp) == 0 {
					fmt.Printf("⚠️ No odds in section '%s' for event_id=%s\n", sectionName, finalID)
					return nil
				}

				updatedAtUnix, _ := strconv.ParseInt(section.UpdatedAt, 10, 64)
				updatedAt := time.Unix(updatedAtUnix, 0)

				for marketType, market := range section.Sp {
					if len(market.Odds) == 0 {
						fmt.Printf("⚠️ No odds for marketType=%s in section=%s\n", marketType, sectionName)
						continue
					}

					marketRecord := domain.Market{
						EventID:        finalID,
						FI:             result.FI,
						MarketCategory: sectionName,
						MarketType:     marketType,
						MarketName:     market.Name,
						MarketID:       market.ID,
						UpdatedAt:      updatedAt,
						Odds:           market.Odds,
					}

					s.store.SaveNonLiveOdd(ctx, marketRecord)
					fmt.Printf("✅ STORED MARKET: event_id=%s | type=%s | name=%s\n", finalID, marketType, market.Name)
				}
				return nil
			}

			if err := saveOdds("asian_lines", result.AsianLines); err != nil {
				fmt.Printf("⚠️ Skipping event %s due to asian_lines error: %v\n", finalID, err)
				continue
			}
			if err := saveOdds("goals", result.Goals); err != nil {
				fmt.Printf("⚠️ Skipping event %s due to goals error: %v\n", finalID, err)
				continue
			}

			fmt.Printf("✅ Done storing all odds for event_id=%s\n", finalID)
		}
	}

	fmt.Println("✅ All non-live odds fetched and stored.")
	return nil
}

// Odds structures

type OddsMarket struct {
	ID   string            `json:"id"`
	Name string            `json:"name"`
	Odds []json.RawMessage `json:"odds"`
}

type OddsSection struct {
	UpdatedAt string                 `json:"updated_at"`
	Sp        map[string]OddsMarket `json:"sp"`
}

// Helper
func getString(v interface{}) string {
	if str, ok := v.(string); ok {
		return str
	}
	return ""
}