package db import ( "blackforestbytes.com/simplecloudnotifier/sq" "context" "errors" "gogs.mikescher.com/BlackForestBytes/goext/langext" ) func (db *Database) ReadSchema(ctx context.Context) (retval int, reterr error) { r1, err := db.db.Query(ctx, "SELECT name FROM sqlite_master WHERE type = :typ AND name = :name", sq.PP{"typ": "table", "name": "meta"}) if err != nil { return 0, err } defer func() { err = r1.Close() if err != nil { // overwrite return values retval = 0 reterr = err } }() if !r1.Next() { return 0, nil } r2, err := db.db.Query(ctx, "SELECT value_int FROM meta WHERE meta_key = :key", sq.PP{"key": "schema"}) if err != nil { return 0, err } defer func() { err = r2.Close() if err != nil { // overwrite return values retval = 0 reterr = err } }() if !r2.Next() { return 0, errors.New("no schema entry in meta table") } var dbschema int err = r2.Scan(&dbschema) if err != nil { return 0, err } return dbschema, nil } func (db *Database) WriteMetaString(ctx context.Context, key string, value string) error { _, err := db.db.Exec(ctx, "INSERT INTO meta (meta_key, value_txt) VALUES (:key, :val) ON CONFLICT(meta_key) DO UPDATE SET value_txt = :val", sq.PP{ "key": key, "val": value, }) if err != nil { return err } return nil } func (db *Database) WriteMetaInt(ctx context.Context, key string, value int64) error { _, err := db.db.Exec(ctx, "INSERT INTO meta (meta_key, value_int) VALUES (:key, :val) ON CONFLICT(meta_key) DO UPDATE SET value_int = :val", sq.PP{ "key": key, "val": value, }) if err != nil { return err } return nil } func (db *Database) WriteMetaReal(ctx context.Context, key string, value float64) error { _, err := db.db.Exec(ctx, "INSERT INTO meta (meta_key, value_real) VALUES (:key, :val) ON CONFLICT(meta_key) DO UPDATE SET value_real = :val", sq.PP{ "key": key, "val": value, }) if err != nil { return err } return nil } func (db *Database) WriteMetaBlob(ctx context.Context, key string, value []byte) error { _, err := db.db.Exec(ctx, "INSERT INTO meta (meta_key, value_blob) VALUES (:key, :val) ON CONFLICT(meta_key) DO UPDATE SET value_blob = :val", sq.PP{ "key": key, "val": value, }) if err != nil { return err } return nil } func (db *Database) ReadMetaString(ctx context.Context, key string) (retval *string, reterr error) { r2, err := db.db.Query(ctx, "SELECT value_txt FROM meta WHERE meta_key = :key", sq.PP{"key": key}) if err != nil { return nil, err } defer func() { err = r2.Close() if err != nil { // overwrite return values retval = nil reterr = err } }() if !r2.Next() { return nil, errors.New("no matching entry in meta table") } var value string err = r2.Scan(&value) if err != nil { return nil, err } return langext.Ptr(value), nil } func (db *Database) ReadMetaInt(ctx context.Context, key string) (retval *int64, reterr error) { r2, err := db.db.Query(ctx, "SELECT value_int FROM meta WHERE meta_key = :key", sq.PP{"key": key}) if err != nil { return nil, err } defer func() { err = r2.Close() if err != nil { // overwrite return values retval = nil reterr = err } }() if !r2.Next() { return nil, errors.New("no matching entry in meta table") } var value int64 err = r2.Scan(&value) if err != nil { return nil, err } return langext.Ptr(value), nil } func (db *Database) ReadMetaReal(ctx context.Context, key string) (retval *float64, reterr error) { r2, err := db.db.Query(ctx, "SELECT value_real FROM meta WHERE meta_key = :key", sq.PP{"key": key}) if err != nil { return nil, err } defer func() { err = r2.Close() if err != nil { // overwrite return values retval = nil reterr = err } }() if !r2.Next() { return nil, errors.New("no matching entry in meta table") } var value float64 err = r2.Scan(&value) if err != nil { return nil, err } return langext.Ptr(value), nil } func (db *Database) ReadMetaBlob(ctx context.Context, key string) (retval *[]byte, reterr error) { r2, err := db.db.Query(ctx, "SELECT value_blob FROM meta WHERE meta_key = :key", sq.PP{"key": key}) if err != nil { return nil, err } defer func() { err = r2.Close() if err != nil { // overwrite return values retval = nil reterr = err } }() if !r2.Next() { return nil, errors.New("no matching entry in meta table") } var value []byte err = r2.Scan(&value) if err != nil { return nil, err } return langext.Ptr(value), nil } func (db *Database) DeleteMeta(ctx context.Context, key string) error { _, err := db.db.Exec(ctx, "DELETE FROM meta WHERE meta_key = :key", sq.PP{"key": key}) if err != nil { return err } return nil }