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			8.4 KiB
		
	
	
	
		
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			315 lines
		
	
	
	
		
			8.4 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program.  If not, see <http://www.gnu.org/licenses/>.
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package bundb
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import (
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	"context"
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	"errors"
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	"slices"
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	"github.com/superseriousbusiness/gotosocial/internal/db"
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	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
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	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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	"github.com/superseriousbusiness/gotosocial/internal/log"
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	"github.com/superseriousbusiness/gotosocial/internal/util"
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	"github.com/uptrace/bun"
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)
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func (r *relationshipDB) IsBlocked(ctx context.Context, sourceAccountID string, targetAccountID string) (bool, error) {
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	block, err := r.GetBlock(
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		gtscontext.SetBarebones(ctx),
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		sourceAccountID,
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		targetAccountID,
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	)
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	if err != nil && !errors.Is(err, db.ErrNoEntries) {
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		return false, err
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	}
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	return (block != nil), nil
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}
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func (r *relationshipDB) IsEitherBlocked(ctx context.Context, accountID1 string, accountID2 string) (bool, error) {
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	// Look for a block in direction of account1->account2
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	b1, err := r.IsBlocked(ctx, accountID1, accountID2)
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	if err != nil || b1 {
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		return true, err
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	}
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	// Look for a block in direction of account2->account1
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	b2, err := r.IsBlocked(ctx, accountID2, accountID1)
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	if err != nil || b2 {
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		return true, err
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	}
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	return false, nil
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}
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func (r *relationshipDB) GetBlockByID(ctx context.Context, id string) (*gtsmodel.Block, error) {
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	return r.getBlock(
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		ctx,
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		"ID",
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		func(block *gtsmodel.Block) error {
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			return r.db.NewSelect().Model(block).
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				Where("? = ?", bun.Ident("block.id"), id).
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				Scan(ctx)
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		},
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		id,
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	)
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}
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func (r *relationshipDB) GetBlockByURI(ctx context.Context, uri string) (*gtsmodel.Block, error) {
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	return r.getBlock(
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		ctx,
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		"URI",
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		func(block *gtsmodel.Block) error {
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			return r.db.NewSelect().Model(block).
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				Where("? = ?", bun.Ident("block.uri"), uri).
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				Scan(ctx)
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		},
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		uri,
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	)
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}
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func (r *relationshipDB) GetBlock(ctx context.Context, sourceAccountID string, targetAccountID string) (*gtsmodel.Block, error) {
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	return r.getBlock(
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		ctx,
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		"AccountID,TargetAccountID",
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		func(block *gtsmodel.Block) error {
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			return r.db.NewSelect().Model(block).
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				Where("? = ?", bun.Ident("block.account_id"), sourceAccountID).
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				Where("? = ?", bun.Ident("block.target_account_id"), targetAccountID).
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				Scan(ctx)
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		},
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		sourceAccountID,
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		targetAccountID,
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	)
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}
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func (r *relationshipDB) GetBlocksByIDs(ctx context.Context, ids []string) ([]*gtsmodel.Block, error) {
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	// Load all blocks IDs via cache loader callbacks.
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	blocks, err := r.state.Caches.DB.Block.LoadIDs("ID",
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		ids,
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		func(uncached []string) ([]*gtsmodel.Block, error) {
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			// Avoid querying
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			// if none uncached.
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			count := len(uncached)
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			if count == 0 {
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				return nil, nil
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			}
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			// Preallocate expected length of uncached blocks.
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			blocks := make([]*gtsmodel.Block, 0, count)
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			// Perform database query scanning
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			// the remaining (uncached) IDs.
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			if err := r.db.NewSelect().
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				Model(&blocks).
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				Where("? IN (?)", bun.Ident("id"), bun.In(uncached)).
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				Scan(ctx); err != nil {
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				return nil, err
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			}
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			return blocks, nil
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		},
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	)
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	if err != nil {
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		return nil, err
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	}
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	// Reorder the blocks by their
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	// IDs to ensure in correct order.
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	getID := func(b *gtsmodel.Block) string { return b.ID }
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	util.OrderBy(blocks, ids, getID)
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	if gtscontext.Barebones(ctx) {
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		// no need to fully populate.
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		return blocks, nil
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	}
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	// Populate all loaded blocks, removing those we fail to
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	// populate (removes needing so many nil checks everywhere).
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	blocks = slices.DeleteFunc(blocks, func(block *gtsmodel.Block) bool {
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		if err := r.PopulateBlock(ctx, block); err != nil {
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			log.Errorf(ctx, "error populating block %s: %v", block.ID, err)
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			return true
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		}
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		return false
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	})
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	return blocks, nil
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}
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func (r *relationshipDB) getBlock(ctx context.Context, lookup string, dbQuery func(*gtsmodel.Block) error, keyParts ...any) (*gtsmodel.Block, error) {
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	// Fetch block from cache with loader callback
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	block, err := r.state.Caches.DB.Block.LoadOne(lookup, func() (*gtsmodel.Block, error) {
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		var block gtsmodel.Block
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		// Not cached! Perform database query
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		if err := dbQuery(&block); err != nil {
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			return nil, err
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		}
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		return &block, nil
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	}, keyParts...)
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	if err != nil {
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		// already processe
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		return nil, err
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	}
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	if gtscontext.Barebones(ctx) {
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		// Only a barebones model was requested.
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		return block, nil
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	}
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	if err := r.state.DB.PopulateBlock(ctx, block); err != nil {
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		return nil, err
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	}
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	return block, nil
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}
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func (r *relationshipDB) PopulateBlock(ctx context.Context, block *gtsmodel.Block) error {
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	var (
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		errs gtserror.MultiError
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		err  error
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	)
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	if block.Account == nil {
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		// Block origin account is not set, fetch from database.
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		block.Account, err = r.state.DB.GetAccountByID(
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			gtscontext.SetBarebones(ctx),
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			block.AccountID,
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		)
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		if err != nil {
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			errs.Appendf("error populating block account: %w", err)
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		}
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	}
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	if block.TargetAccount == nil {
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		// Block target account is not set, fetch from database.
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		block.TargetAccount, err = r.state.DB.GetAccountByID(
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			gtscontext.SetBarebones(ctx),
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			block.TargetAccountID,
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		)
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		if err != nil {
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			errs.Appendf("error populating block target account: %w", err)
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		}
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	}
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	return errs.Combine()
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}
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func (r *relationshipDB) PutBlock(ctx context.Context, block *gtsmodel.Block) error {
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	return r.state.Caches.DB.Block.Store(block, func() error {
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		_, err := r.db.NewInsert().Model(block).Exec(ctx)
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		return err
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	})
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}
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func (r *relationshipDB) DeleteBlockByID(ctx context.Context, id string) error {
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	// Load block into cache before attempting a delete,
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	// as we need it cached in order to trigger the invalidate
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	// callback. This in turn invalidates others.
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	_, err := r.GetBlockByID(gtscontext.SetBarebones(ctx), id)
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	if err != nil {
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		if errors.Is(err, db.ErrNoEntries) {
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			// not an issue.
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			err = nil
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		}
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		return err
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	}
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	// Drop this now-cached block on return after delete.
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	defer r.state.Caches.DB.Block.Invalidate("ID", id)
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	// Finally delete block from DB.
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	_, err = r.db.NewDelete().
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		Table("blocks").
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		Where("? = ?", bun.Ident("id"), id).
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		Exec(ctx)
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	return err
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}
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func (r *relationshipDB) DeleteBlockByURI(ctx context.Context, uri string) error {
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	// Load block into cache before attempting a delete,
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	// as we need it cached in order to trigger the invalidate
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	// callback. This in turn invalidates others.
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	_, err := r.GetBlockByURI(gtscontext.SetBarebones(ctx), uri)
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	if err != nil {
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		if errors.Is(err, db.ErrNoEntries) {
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			// not an issue.
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			err = nil
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		}
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		return err
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	}
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	// Drop this now-cached block on return after delete.
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	defer r.state.Caches.DB.Block.Invalidate("URI", uri)
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	// Finally delete block from DB.
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	_, err = r.db.NewDelete().
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		Table("blocks").
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		Where("? = ?", bun.Ident("uri"), uri).
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		Exec(ctx)
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	return err
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}
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func (r *relationshipDB) DeleteAccountBlocks(ctx context.Context, accountID string) error {
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	var blockIDs []string
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	// Get full list of IDs.
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	if err := r.db.NewSelect().
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		Column("id").
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		Table("blocks").
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		WhereOr("? = ? OR ? = ?",
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			bun.Ident("account_id"),
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			accountID,
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			bun.Ident("target_account_id"),
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			accountID,
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		).
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		Scan(ctx, &blockIDs); err != nil {
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		return err
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	}
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	if len(blockIDs) == 0 {
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		// Nothing
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		// to delete.
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		return nil
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	}
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	defer func() {
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		// Invalidate all account's incoming / outoing blocks on return.
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		r.state.Caches.DB.Block.Invalidate("AccountID", accountID)
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		r.state.Caches.DB.Block.Invalidate("TargetAccountID", accountID)
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	}()
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	// Load all blocks into cache, this *really* isn't great
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	// but it is the only way we can ensure we invalidate all
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	// related caches correctly (e.g. visibility).
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	_, err := r.GetAccountBlocks(ctx, accountID, nil)
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	if err != nil && !errors.Is(err, db.ErrNoEntries) {
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		return err
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	}
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	// Finally delete all from DB.
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	_, err = r.db.NewDelete().
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		Table("blocks").
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		Where("? IN (?)", bun.Ident("id"), bun.In(blockIDs)).
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		Exec(ctx)
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	return err
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}
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