[feature] Add List functionality (#1802)

* start working on lists

* further list work

* test list db functions nicely

* more work on lists

* peepoopeepoo

* poke

* start list timeline func

* we're getting there lads

* couldn't be me working on stuff... could it?

* hook up handlers

* fiddling

* weeee

* woah

* screaming, pissing

* fix streaming being a whiny baby

* lint, small test fix, swagger

* tidying up, testing

* fucked! by the linter

* move timelines to state like a boss

* add timeline start to tests using state

* invalidate lists

internal/db/bundb/migrations/20230515173919_lists.go

@@ -0,0 +1,92 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package migrations
+
+import (
+	"context"
+
+	gtsmodel "github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/uptrace/bun"
+)
+
+func init() {
+	up := func(ctx context.Context, db *bun.DB) error {
+		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+			// List table.
+			if _, err := tx.
+				NewCreateTable().
+				Model(&gtsmodel.List{}).
+				IfNotExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Add indexes to the List table.
+			for index, columns := range map[string][]string{
+				"lists_id_idx":         {"id"},
+				"lists_account_id_idx": {"account_id"},
+			} {
+				if _, err := tx.
+					NewCreateIndex().
+					Table("lists").
+					Index(index).
+					Column(columns...).
+					Exec(ctx); err != nil {
+					return err
+				}
+			}
+
+			// List entry table.
+			if _, err := tx.
+				NewCreateTable().
+				Model(&gtsmodel.ListEntry{}).
+				IfNotExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Add indexes to the List entry table.
+			for index, columns := range map[string][]string{
+				"list_entries_id_idx":        {"id"},
+				"list_entries_list_id_idx":   {"list_id"},
+				"list_entries_follow_id_idx": {"follow_id"},
+			} {
+				if _, err := tx.
+					NewCreateIndex().
+					Table("list_entries").
+					Index(index).
+					Column(columns...).
+					Exec(ctx); err != nil {
+					return err
+				}
+			}
+
+			return nil
+		})
+	}
+
+	down := func(ctx context.Context, db *bun.DB) error {
+		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+			return nil
+		})
+	}
+
+	if err := Migrations.Register(up, down); err != nil {
+		panic(err)
+	}
+}