big ole refactor

internal/db/migrations/20260210182212_add_leagues.go

@@ -0,0 +1,67 @@
+package migrations
+
+import (
+	"context"
+
+	"github.com/uptrace/bun"
+
+	"git.haelnorr.com/h/oslstats/internal/db"
+)
+
+func init() {
+	Migrations.MustRegister(
+		// UP migration
+		func(ctx context.Context, conn *bun.DB) error {
+			// Add slap_version column to seasons table
+			_, err := conn.NewAddColumn().
+				Model((*db.Season)(nil)).
+				ColumnExpr("slap_version VARCHAR NOT NULL DEFAULT 'rebound'").
+				IfNotExists().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			// Create leagues table
+			_, err = conn.NewCreateTable().
+				Model((*db.League)(nil)).
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			// Create season_leagues join table
+			_, err = conn.NewCreateTable().
+				Model((*db.SeasonLeague)(nil)).
+				Exec(ctx)
+			return err
+		},
+		// DOWN migration
+		func(ctx context.Context, conn *bun.DB) error {
+			// Drop season_leagues join table first
+			_, err := conn.NewDropTable().
+				Model((*db.SeasonLeague)(nil)).
+				IfExists().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			// Drop leagues table
+			_, err = conn.NewDropTable().
+				Model((*db.League)(nil)).
+				IfExists().
+				Exec(ctx)
+			if err != nil {
+				return err
+			}
+
+			// Remove slap_version column from seasons table
+			_, err = conn.NewDropColumn().
+				Model((*db.Season)(nil)).
+				ColumnExpr("slap_version").
+				Exec(ctx)
+			return err
+		},
+	)
+}