fix: resolve spot and futures symbols via shared resolver

Introduce a shared token symbol resolver for spot and futures lookups while keeping alpha lookup independent, restoring prefix/remap handling and preserving spot-only fallback behavior.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

internal/helper/binancex/resolver.go

@@ -0,0 +1,35 @@
+package binancex
+
+import (
+	"strings"
+
+	"me.thuanle/bbot/internal/data"
+)
+
+func Token2FutureSymbols(token string) []string {
+	return Token2Symbols(token)
+}
+
+func Token2SpotSymbols(token string) []string {
+	futureSymbols := Token2FutureSymbols(token)
+	spots := make([]string, 0, len(futureSymbols)+1)
+	seen := make(map[string]struct{}, len(futureSymbols)+1)
+
+	for _, futureSymbol := range futureSymbols {
+		spotSymbol := Future2SpotSymbol(futureSymbol)
+		if _, ok := seen[spotSymbol]; ok {
+			continue
+		}
+		seen[spotSymbol] = struct{}{}
+		spots = append(spots, spotSymbol)
+	}
+
+	spotOnly := strings.ToUpper(token) + "USDT"
+	if data.Market.IsSpotPair(spotOnly) {
+		if _, ok := seen[spotOnly]; !ok {
+			spots = append(spots, spotOnly)
+		}
+	}
+
+	return spots
+}

internal/helper/binancex/resolver_test.go

@@ -0,0 +1,91 @@
+package binancex
+
+import (
+	"testing"
+
+	"me.thuanle/bbot/internal/data"
+	"me.thuanle/bbot/internal/data/market"
+)
+
+type resolverMarketStub struct {
+	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 false }
+func (m *resolverMarketStub) GetAlphaToken(symbol string) (market.AlphaTokenInfo, bool) {
+	return market.AlphaTokenInfo{}, 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 TestToken2FutureSymbols_ResolvesPrefixAndSuffix(t *testing.T) {
+	orig := data.Market
+	defer func() { data.Market = orig }()
+
+	data.Market = &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 TestToken2SpotSymbols_AppliesExplicitRemap(t *testing.T) {
+	orig := data.Market
+	defer func() { data.Market = orig }()
+
+	data.Market = &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) {
+	orig := data.Market
+	defer func() { data.Market = orig }()
+
+	data.Market = &resolverMarketStub{
+		spotPairs: map[string]bool{"ABCUSDT": true},
+	}
+
+	spots := Token2SpotSymbols("abc")
+	if len(spots) != 1 || spots[0] != "ABCUSDT" {
+		t.Fatalf("expected [ABCUSDT], got %+v", spots)
+	}
+}