move gotd fork into repo. (#111)

- update to latest telegram layer
- remove some references to fields in tg.Entities that don't exist in
the schema
- originally added here:
https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e
  - referenced here
-
https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3
-
https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e

pkg/gotd/telegram/peers/integration.go

@@ -0,0 +1,103 @@
+package peers
+
+import (
+	"context"
+
+	"go.uber.org/multierr"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/message/entity"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/updates"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+var _ updates.AccessHasher = (*Manager)(nil)
+
+func (m *Manager) SetChannelAccessHash(ctx context.Context, forUserID, channelID, accessHash int64) error {
+	myID, ok := m.myID()
+	if !ok || myID != forUserID {
+		return nil
+	}
+	return m.storage.Save(ctx, Key{
+		Prefix: channelPrefix,
+		ID:     channelID,
+	}, Value{
+		AccessHash: accessHash,
+	})
+}
+
+func (m *Manager) GetChannelAccessHash(ctx context.Context, forUserID, channelID int64) (accessHash int64, found bool, err error) {
+	myID, ok := m.myID()
+	if !ok || myID != forUserID {
+		return 0, false, nil
+	}
+
+	v, found, err := m.storage.Find(ctx, Key{
+		Prefix: channelPrefix,
+		ID:     channelID,
+	})
+	return v.AccessHash, found, err
+}
+
+func (m *Manager) SetUserAccessHash(ctx context.Context, forUserID, userID, accessHash int64) error {
+	myID, ok := m.myID()
+	if !ok || myID != forUserID {
+		return nil
+	}
+	return m.storage.Save(ctx, Key{
+		Prefix: usersPrefix,
+		ID:     userID,
+	}, Value{
+		AccessHash: accessHash,
+	})
+}
+
+func (m *Manager) GetUserAccessHash(ctx context.Context, forUserID, userID int64) (accessHash int64, found bool, err error) {
+	myID, ok := m.myID()
+	if !ok || myID != forUserID {
+		return 0, false, nil
+	}
+
+	v, found, err := m.storage.Find(ctx, Key{
+		Prefix: usersPrefix,
+		ID:     userID,
+	})
+	return v.AccessHash, found, err
+}
+
+// UpdateHook returns update middleware hook for collecting entities.
+func (m *Manager) UpdateHook(next telegram.UpdateHandler) telegram.UpdateHandler {
+	f := func(ctx context.Context, u tg.UpdatesClass) error {
+		var (
+			users   []tg.UserClass
+			chats   []tg.ChatClass
+			updates []tg.UpdateClass
+		)
+		switch u := u.(type) {
+		case *tg.UpdatesCombined:
+			users = u.GetUsers()
+			chats = u.GetChats()
+			updates = u.GetUpdates()
+		case *tg.Updates:
+			users = u.GetUsers()
+			chats = u.GetChats()
+			updates = u.GetUpdates()
+		}
+		m.applyUpdates(updates)
+		applyErr := m.applyEntities(ctx, users, chats)
+		handleErr := next.Handle(ctx, u)
+		return multierr.Append(handleErr, applyErr)
+	}
+	return telegram.UpdateHandlerFunc(f)
+}
+
+// UserResolveHook creates entity.UserResolver attached to this Manager.
+func (m *Manager) UserResolveHook(ctx context.Context) entity.UserResolver {
+	return func(id int64) (tg.InputUserClass, error) {
+		r, err := m.getUser(ctx, &tg.InputUser{UserID: id})
+		if err != nil {
+			return nil, err
+		}
+		return r.AsInput(), nil
+	}
+}