142 lines
3.5 KiB
Go
142 lines
3.5 KiB
Go
package mysql
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import (
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"context"
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"strings"
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"github.com/pkg/errors"
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"github.com/usememos/memos/store"
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)
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func (d *DB) UpsertReaction(ctx context.Context, upsert *store.Reaction) (*store.Reaction, error) {
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// MySQL has no INSERT ... RETURNING, so keep the insert and readback in one
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// transaction to match the other drivers' atomic operation.
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tx, err := d.db.BeginTx(ctx, nil)
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if err != nil {
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return nil, errors.Wrap(err, "failed to start reaction upsert transaction")
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}
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defer func() {
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_ = tx.Rollback()
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}()
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result, err := tx.ExecContext(ctx, `
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INSERT INTO reaction (creator_id, memo_id, reaction_type)
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SELECT ?, memo.id, ?
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FROM memo
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WHERE memo.id = ?
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FOR SHARE
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`, upsert.CreatorID, upsert.ReactionType, upsert.MemoID)
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if err != nil {
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return nil, err
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}
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rowsAffected, err := result.RowsAffected()
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if err != nil {
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return nil, err
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}
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if rowsAffected == 0 {
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return nil, errors.Wrap(store.ErrReactionMemoNotFound, "failed to create reaction")
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}
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rawID, err := result.LastInsertId()
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if err != nil {
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return nil, err
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}
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upsert.ID = int32(rawID)
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if err := tx.QueryRowContext(ctx, "SELECT UNIX_TIMESTAMP(created_ts) FROM reaction WHERE id = ?", upsert.ID).Scan(&upsert.CreatedTs); err != nil {
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return nil, errors.Wrap(err, "failed to read created reaction")
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}
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if err := tx.Commit(); err != nil {
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return nil, errors.Wrap(err, "failed to commit reaction upsert transaction")
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}
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return upsert, nil
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}
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func (d *DB) ListReactions(ctx context.Context, find *store.FindReaction) ([]*store.Reaction, error) {
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where, args := []string{"1 = 1"}, []any{}
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if find.ID != nil {
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where, args = append(where, "`id` = ?"), append(args, *find.ID)
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}
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if find.CreatorID != nil {
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where, args = append(where, "`creator_id` = ?"), append(args, *find.CreatorID)
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}
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if find.MemoID != nil {
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where, args = append(where, "`memo_id` = ?"), append(args, *find.MemoID)
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}
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if len(find.MemoIDList) > 0 {
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placeholders := make([]string, 0, len(find.MemoIDList))
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for _, id := range find.MemoIDList {
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placeholders = append(placeholders, "?")
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args = append(args, id)
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}
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where = append(where, "`memo_id` IN ("+strings.Join(placeholders, ",")+")")
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}
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rows, err := d.db.QueryContext(ctx, `
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SELECT
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id,
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UNIX_TIMESTAMP(created_ts) AS created_ts,
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creator_id,
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memo_id,
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reaction_type
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FROM reaction
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WHERE `+strings.Join(where, " AND ")+`
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ORDER BY id ASC`,
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args...,
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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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defer rows.Close()
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list := []*store.Reaction{}
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for rows.Next() {
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reaction := &store.Reaction{}
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if err := rows.Scan(
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&reaction.ID,
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&reaction.CreatedTs,
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&reaction.CreatorID,
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&reaction.MemoID,
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&reaction.ReactionType,
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); err != nil {
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return nil, err
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}
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list = append(list, reaction)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return list, nil
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}
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func (d *DB) GetReaction(ctx context.Context, find *store.FindReaction) (*store.Reaction, error) {
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list, err := d.ListReactions(ctx, find)
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if err != nil {
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return nil, err
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}
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if len(list) == 0 {
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return nil, nil
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}
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reaction := list[0]
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return reaction, nil
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}
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func (d *DB) DeleteReaction(ctx context.Context, delete *store.DeleteReaction) error {
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where, args := []string{}, []any{}
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if delete.ID != nil {
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where, args = append(where, "`id` = ?"), append(args, *delete.ID)
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}
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if delete.MemoID != nil {
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where, args = append(where, "`memo_id` = ?"), append(args, *delete.MemoID)
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}
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if len(where) == 0 {
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return nil
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}
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_, err := d.db.ExecContext(ctx, "DELETE FROM `reaction` WHERE "+strings.Join(where, " AND "), args...)
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return err
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}
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