Add demo seed data and API fallback for portfolio mode

internal/service/player.go

@@ -29,6 +29,7 @@ func NewPlayerService(codClient codclient.CodClient, playerRepo *repository.Play
 }
 
 // SearchPlayer verifies a player exists via the CoD API, persists them, and returns search results.
+// Falls back to database if the API is unavailable.
 func (s *PlayerService) SearchPlayer(ctx context.Context, platform, gamertag, title, mode string) (*PlayerSearchResult, error) {
 	if title == "" {
 		title = "mw"
@@ -39,7 +40,8 @@ func (s *PlayerService) SearchPlayer(ctx context.Context, platform, gamertag, ti
 
 	stats, err := s.codClient.GetPlayerStats(ctx, platform, gamertag, title, mode)
 	if err != nil {
-		return nil, err
+		slog.Warn("cod api unavailable, falling back to database", "error", err)
+		return s.searchFromDB(ctx, platform, gamertag, mode)
 	}
 
 	player, err := s.playerRepo.Upsert(ctx, platform, gamertag)
@@ -64,6 +66,7 @@ func (s *PlayerService) SearchPlayer(ctx context.Context, platform, gamertag, ti
 }
 
 // GetPlayerStats fetches player stats from the CoD API, upserts the player, and saves a snapshot.
+// Falls back to database if the API is unavailable.
 func (s *PlayerService) GetPlayerStats(ctx context.Context, platform, gamertag, title, mode string) (*codclient.PlayerStats, error) {
 	if title == "" {
 		title = "mw"
@@ -74,7 +77,8 @@ func (s *PlayerService) GetPlayerStats(ctx context.Context, platform, gamertag,
 
 	stats, err := s.codClient.GetPlayerStats(ctx, platform, gamertag, title, mode)
 	if err != nil {
-		return nil, err
+		slog.Warn("cod api unavailable for stats, falling back to database", "error", err)
+		return s.getStatsFromDB(ctx, platform, gamertag, mode)
 	}
 
 	player, err := s.playerRepo.Upsert(ctx, platform, gamertag)
@@ -92,3 +96,57 @@ func (s *PlayerService) GetPlayerStats(ctx context.Context, platform, gamertag,
 
 	return stats, nil
 }
+
+// searchFromDB looks up a player and their latest stats from the database.
+func (s *PlayerService) searchFromDB(ctx context.Context, platform, gamertag, mode string) (*PlayerSearchResult, error) {
+	player, err := s.playerRepo.GetByPlatformAndTag(ctx, platform, gamertag)
+	if err != nil {
+		return nil, err
+	}
+	if player == nil {
+		return nil, codclient.ErrPlayerNotFound
+	}
+
+	stats, err := s.getStatsFromDB(ctx, platform, gamertag, mode)
+	if err != nil {
+		return nil, err
+	}
+
+	return &PlayerSearchResult{
+		PlayerID: player.ID,
+		Platform: platform,
+		Gamertag: gamertag,
+		Stats:    stats,
+	}, nil
+}
+
+// getStatsFromDB loads the latest stats snapshot for a player from the database.
+func (s *PlayerService) getStatsFromDB(ctx context.Context, platform, gamertag, mode string) (*codclient.PlayerStats, error) {
+	player, err := s.playerRepo.GetByPlatformAndTag(ctx, platform, gamertag)
+	if err != nil {
+		return nil, err
+	}
+	if player == nil {
+		return nil, codclient.ErrPlayerNotFound
+	}
+
+	statsData, _, err := s.playerRepo.GetLatestStats(ctx, player.ID, mode)
+	if err != nil {
+		return nil, err
+	}
+	if statsData == nil {
+		return nil, codclient.ErrPlayerNotFound
+	}
+
+	// statsData is any (from pgx JSONB scan) — round-trip through JSON to decode
+	jsonBytes, err := json.Marshal(statsData)
+	if err != nil {
+		return nil, err
+	}
+	var stats codclient.PlayerStats
+	if err := json.Unmarshal(jsonBytes, &stats); err != nil {
+		return nil, err
+	}
+
+	return &stats, nil
+}