package binancex

import (
	"reflect"
	"testing"

	"me.thuanle/bbot/internal/configs/binance"
	"me.thuanle/bbot/internal/data"
	"me.thuanle/bbot/internal/data/market"
)

type resolverMarketStub struct {
	alphaTokens  map[string]bool
	spotPairs    map[string]bool
	futuresPairs map[string]bool
}

func (m *resolverMarketStub) GetFuturePrice(symbol string) (float64, float64, int64, bool) {
	return 0, 0, 0, false
}
func (m *resolverMarketStub) GetAllPremiumIndex() (map[string]market.PremiumIndex, error) {
	return nil, nil
}
func (m *resolverMarketStub) GetAllFundRate() (map[string]float64, map[string]int64) { return nil, nil }
func (m *resolverMarketStub) GetSpotPrice(symbol string) (float64, bool)             { return 0, false }
func (m *resolverMarketStub) GetMarginInterestRates() map[string]float64             { return nil }
func (m *resolverMarketStub) IsAlphaToken(symbol string) bool                        { return m.alphaTokens[symbol] }
func (m *resolverMarketStub) GetAlphaToken(symbol string) (market.AlphaTokenInfo, bool) {
	return market.AlphaTokenInfo{}, false
}
func (m *resolverMarketStub) GetAlphaPrice(symbol string) (float64, bool) { return 0, false }
func (m *resolverMarketStub) IsSpotPair(symbol string) bool               { return m.spotPairs[symbol] }
func (m *resolverMarketStub) IsFuturesPair(symbol string) bool            { return m.futuresPairs[symbol] }
func (m *resolverMarketStub) RefreshTradingPairCache() error              { return nil }

func withResolverMarketStub(t *testing.T, marketStub *resolverMarketStub) {
	t.Helper()
	orig := data.Market
	data.Market = marketStub
	t.Cleanup(func() { data.Market = orig })
}

func TestToken2FutureSymbols_ResolvesPrefixAndSuffix(t *testing.T) {
	withResolverMarketStub(t, &resolverMarketStub{
		futuresPairs: map[string]bool{
			"1000PEPEUSDT": true,
			"1000PEPEUSDC": true,
		},
	})

	syms := Token2FutureSymbols("pepe")
	if len(syms) == 0 {
		t.Fatalf("expected future symbols for PEPE")
	}

	foundUSDT := false
	foundUSDC := false
	for _, sym := range syms {
		if sym == "1000PEPEUSDT" {
			foundUSDT = true
		}
		if sym == "1000PEPEUSDC" {
			foundUSDC = true
		}
	}

	if !foundUSDT || !foundUSDC {
		t.Fatalf("expected both 1000PEPEUSDT and 1000PEPEUSDC, got %+v", syms)
	}
}

func TestToken2FutureSymbols_UsesDeterministicCandidateOrder(t *testing.T) {
	withResolverMarketStub(t, &resolverMarketStub{
		futuresPairs: map[string]bool{
			"1000PEPEUSDT": true,
			"1000PEPEUSDC": true,
			"PEPEUSDT":     true,
			"PEPEUSDC":     true,
		},
	})

	syms := Token2FutureSymbols("pepe")
	expected := []string{"1000PEPEUSDT", "1000PEPEUSDC", "PEPEUSDT", "PEPEUSDC"}
	if !reflect.DeepEqual(syms, expected) {
		t.Fatalf("expected deterministic order %+v, got %+v", expected, syms)
	}
}

func TestToken2FutureSymbols_ResolvesUSDCAbbreviation(t *testing.T) {
	withResolverMarketStub(t, &resolverMarketStub{
		futuresPairs: map[string]bool{"PEPEUSDC": true},
	})

	syms := Token2FutureSymbols("pepec")
	expected := []string{"PEPEUSDC"}
	if !reflect.DeepEqual(syms, expected) {
		t.Fatalf("expected USDC abbreviation resolution %+v, got %+v", expected, syms)
	}
}

func TestSymbolSuffixListMatchesSymbolSuffixMap(t *testing.T) {
	seen := make(map[string]struct{}, len(binance.SymbolSuffixList))
	for _, suffix := range binance.SymbolSuffixList {
		if _, ok := binance.SymbolSuffixMap[suffix]; !ok {
			t.Fatalf("SymbolSuffixList contains %q missing from SymbolSuffixMap", suffix)
		}
		seen[suffix] = struct{}{}
	}

	for suffix := range binance.SymbolSuffixMap {
		if _, ok := seen[suffix]; !ok {
			t.Fatalf("SymbolSuffixMap contains %q missing from SymbolSuffixList", suffix)
		}
	}
}

func TestIsToken(t *testing.T) {
	tests := []struct {
		name       string
		input      string
		marketStub *resolverMarketStub
		want       bool
	}{
		{
			name:  "futures token resolution success",
			input: "pepe",
			marketStub: &resolverMarketStub{
				futuresPairs: map[string]bool{"1000PEPEUSDT": true},
			},
			want: true,
		},
		{
			name:  "alpha token fallback",
			input: "alpha",
			marketStub: &resolverMarketStub{
				alphaTokens: map[string]bool{"ALPHA": true},
			},
			want: true,
		},
		{
			name:       "non alphanumeric input",
			input:      "bad!",
			marketStub: &resolverMarketStub{},
			want:       false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			withResolverMarketStub(t, tt.marketStub)

			got := IsToken(tt.input)
			if got != tt.want {
				t.Fatalf("expected %v, got %v", tt.want, got)
			}
		})
	}
}

func TestToken2SpotSymbols_AppliesExplicitRemap(t *testing.T) {
	withResolverMarketStub(t, &resolverMarketStub{
		futuresPairs: map[string]bool{"LUNA2USDT": true},
		spotPairs:    map[string]bool{"LUNAUSDT": true},
	})

	spots := Token2SpotSymbols("luna2")
	if len(spots) != 1 || spots[0] != "LUNAUSDT" {
		t.Fatalf("expected [LUNAUSDT], got %+v", spots)
	}
}

func TestToken2SpotSymbols_SpotOnlyFallback(t *testing.T) {
	withResolverMarketStub(t, &resolverMarketStub{
		spotPairs: map[string]bool{"ABCUSDT": true},
	})

	spots := Token2SpotSymbols("abc")
	if len(spots) != 1 || spots[0] != "ABCUSDT" {
		t.Fatalf("expected [ABCUSDT], got %+v", spots)
	}
}