finals generation added

internal/db/migrations/20260308140000_add_playoffs.go

@@ -0,0 +1,98 @@
+package migrations
+
+import (
+	"context"
+
+	"git.haelnorr.com/h/oslstats/internal/db"
+	"github.com/uptrace/bun"
+)
+
+func init() {
+	Migrations.MustRegister(
+		// UP migration
+		func(ctx context.Context, conn *bun.DB) error {
+			// Create playoff_brackets table
+			_, err := conn.NewCreateTable().
+				Model((*db.PlayoffBracket)(nil)).
+				IfNotExists().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			// Create playoff_series table
+			_, err = conn.NewCreateTable().
+				Model((*db.PlayoffSeries)(nil)).
+				IfNotExists().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			// Create playoff_matches table
+			_, err = conn.NewCreateTable().
+				Model((*db.PlayoffMatch)(nil)).
+				IfNotExists().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			// Add foreign key for winner_next_series_id
+			_, err = conn.NewRaw(`
+				ALTER TABLE playoff_series
+				ADD CONSTRAINT fk_winner_next_series
+				FOREIGN KEY (winner_next_series_id) REFERENCES playoff_series(id)
+				ON DELETE SET NULL
+			`).Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			// Add foreign key for loser_next_series_id
+			_, err = conn.NewRaw(`
+				ALTER TABLE playoff_series
+				ADD CONSTRAINT fk_loser_next_series
+				FOREIGN KEY (loser_next_series_id) REFERENCES playoff_series(id)
+				ON DELETE SET NULL
+			`).Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			return nil
+		},
+		// DOWN migration
+		func(ctx context.Context, conn *bun.DB) error {
+			// Drop tables in reverse order (respecting foreign keys)
+			_, err := conn.NewDropTable().
+				Model((*db.PlayoffMatch)(nil)).
+				IfExists().
+				Cascade().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			_, err = conn.NewDropTable().
+				Model((*db.PlayoffSeries)(nil)).
+				IfExists().
+				Cascade().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			_, err = conn.NewDropTable().
+				Model((*db.PlayoffBracket)(nil)).
+				IfExists().
+				Cascade().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			return nil
+		},
+	)
+}