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feat: added db transactions abstraction; cleaned up user registration; repos adapted new abstraction: all repos now support transactions, if present in ctx

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This commit is contained in:
robin
2026-09-01 14:55:20 +02:00
parent f87b0a0707
commit 2e3e82e776
14 changed files with 219 additions and 145 deletions
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internal/repository/list.go
+14 -46
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@@ -5,29 +5,18 @@ import (
"database/sql"
"errors"
"fmt"
"log/slog"
"github.com/robindittmar/dttmr-api/internal/domain"
)
type ListRepo struct {
db *sql.DB
Repo
}
func NewListRepo(db *sql.DB) *ListRepo {
return &ListRepo{db: db}
}
func (r *ListRepo) CreateList(ctx context.Context, name string, userIDs []string) (*domain.List, error) {
tx, err := r.db.BeginTx(ctx, nil)
if err != nil {
return nil, fmt.Errorf("begin transaction: %w", err)
}
defer tx.Rollback()
func (r *ListRepo) CreateList(ctx context.Context, name string) (*domain.List, error) {
list := &domain.List{Name: name}
err = tx.QueryRowContext(ctx,
err := r.conn(ctx).QueryRowContext(ctx,
"INSERT INTO lists (name) VALUES ($1) RETURNING id, created_at, modified_at",
name,
).Scan(&list.ID, &list.CreatedAt, &list.ModifiedAt)
@@ -35,32 +24,11 @@ func (r *ListRepo) CreateList(ctx context.Context, name string, userIDs []string
return nil, fmt.Errorf("failed to insert list: %w", err)
}
stmt, err := tx.PrepareContext(ctx, "INSERT INTO list_users (list_id, user_id) VALUES ($1, $2)")
if err != nil {
return nil, fmt.Errorf("failed to prepare user/list association statement: %w", err)
}
defer func() {
err := stmt.Close()
if err != nil {
slog.Error("failed to close user/list association statement", slog.Any("error", err))
}
}()
for _, userID := range userIDs {
if _, err = stmt.ExecContext(ctx, list.ID, userID); err != nil {
return nil, fmt.Errorf("failed to insert user/list association: %w", err)
}
}
if err := tx.Commit(); err != nil {
return nil, fmt.Errorf("commit transaction: %w", err)
}
return list, nil
}
func (r *ListRepo) DeleteList(ctx context.Context, listID string) error {
_, err := r.db.ExecContext(ctx, "DELETE FROM lists WHERE id = $1", listID)
_, err := r.conn(ctx).ExecContext(ctx, "DELETE FROM lists WHERE id = $1", listID)
if err != nil {
return fmt.Errorf("failed to delete list: %w", err)
}
@@ -69,7 +37,7 @@ func (r *ListRepo) DeleteList(ctx context.Context, listID string) error {
}
func (r *ListRepo) GetLists(ctx context.Context, userID string) ([]domain.List, error) {
rows, err := r.db.QueryContext(ctx,
rows, err := r.conn(ctx).QueryContext(ctx,
"SELECT l.id, l.name, l.created_at, l.modified_at, (SELECT COUNT(*) FROM list_items WHERE list_id=l.id), (SELECT COUNT(*) FROM list_items WHERE list_id=l.id AND is_completed=true) FROM lists AS l INNER JOIN list_users ON l.id=list_users.list_id WHERE list_users.user_id = $1",
userID,
)
@@ -96,7 +64,7 @@ func (r *ListRepo) GetLists(ctx context.Context, userID string) ([]domain.List,
}
func (r *ListRepo) AddUserToList(ctx context.Context, listID string, userID string) error {
_, err := r.db.ExecContext(ctx,
_, err := r.conn(ctx).ExecContext(ctx,
"INSERT INTO list_users (list_id, user_id) VALUES ($1, $2)",
listID, userID,
)
@@ -108,7 +76,7 @@ func (r *ListRepo) AddUserToList(ctx context.Context, listID string, userID stri
}
func (r *ListRepo) RemoveUserFromList(ctx context.Context, listID string, userID string) error {
_, err := r.db.ExecContext(ctx,
_, err := r.conn(ctx).ExecContext(ctx,
"DELETE FROM list_users WHERE list_id = $1 AND user_id = $2",
listID, userID,
)
@@ -122,7 +90,7 @@ func (r *ListRepo) RemoveUserFromList(ctx context.Context, listID string, userID
func (r *ListRepo) IsUserInList(ctx context.Context, listID string, userID string) (bool, error) {
var cnt int
err := r.db.QueryRowContext(ctx,
err := r.conn(ctx).QueryRowContext(ctx,
"SELECT COUNT(*) FROM list_users WHERE list_id = $1 AND user_id = $2",
listID, userID,
).Scan(&cnt)
@@ -136,7 +104,7 @@ func (r *ListRepo) IsUserInList(ctx context.Context, listID string, userID strin
func (r *ListRepo) IsUserInListByItemID(ctx context.Context, listItemID string, userID string) (bool, error) {
var cnt int
err := r.db.QueryRowContext(ctx,
err := r.conn(ctx).QueryRowContext(ctx,
"SELECT COUNT(*) FROM list_users WHERE list_id = (SELECT list_id FROM list_items WHERE id = $1) AND user_id = $2",
listItemID, userID,
).Scan(&cnt)
@@ -150,7 +118,7 @@ func (r *ListRepo) IsUserInListByItemID(ctx context.Context, listItemID string,
func (r *ListRepo) CreateListItem(ctx context.Context, listID string, title string) (*domain.ListItem, error) {
l := &domain.ListItem{Title: title}
err := r.db.QueryRowContext(ctx,
err := r.conn(ctx).QueryRowContext(ctx,
"INSERT INTO list_items (list_id, title) VALUES ($1, $2) RETURNING id, is_completed, created_at, modified_at",
listID, title,
).Scan(&l.ID, &l.IsCompleted, &l.CreatedAt, &l.ModifiedAt)
@@ -162,7 +130,7 @@ func (r *ListRepo) CreateListItem(ctx context.Context, listID string, title stri
}
func (r *ListRepo) DeleteListItem(ctx context.Context, listItemID string) error {
_, err := r.db.ExecContext(ctx, "DELETE FROM list_items WHERE id = $1", listItemID)
_, err := r.conn(ctx).ExecContext(ctx, "DELETE FROM list_items WHERE id = $1", listItemID)
if err != nil {
return fmt.Errorf("failed to delete list item: %w", err)
}
@@ -171,7 +139,7 @@ func (r *ListRepo) DeleteListItem(ctx context.Context, listItemID string) error
}
func (r *ListRepo) UpdateListItem(ctx context.Context, listItemID string, title string, isCompleted bool) error {
_, err := r.db.ExecContext(ctx, "UPDATE list_items SET title = $1, is_completed = $2, modified_at = NOW() WHERE id = $3",
_, err := r.conn(ctx).ExecContext(ctx, "UPDATE list_items SET title = $1, is_completed = $2, modified_at = NOW() WHERE id = $3",
title, isCompleted, listItemID,
)
if err != nil {
@@ -182,7 +150,7 @@ func (r *ListRepo) UpdateListItem(ctx context.Context, listItemID string, title
}
func (r *ListRepo) SetListItemCompleted(ctx context.Context, listItemID string, isCompleted bool) error {
_, err := r.db.ExecContext(ctx, "UPDATE list_items SET is_completed = $1, modified_at = NOW() WHERE id = $2",
_, err := r.conn(ctx).ExecContext(ctx, "UPDATE list_items SET is_completed = $1, modified_at = NOW() WHERE id = $2",
isCompleted, listItemID,
)
if err != nil {
@@ -193,7 +161,7 @@ func (r *ListRepo) SetListItemCompleted(ctx context.Context, listItemID string,
}
func (r *ListRepo) GetListItems(ctx context.Context, listID string) ([]domain.ListItem, error) {
rows, err := r.db.QueryContext(ctx,
rows, err := r.conn(ctx).QueryContext(ctx,
"SELECT id, title, is_completed, created_at, modified_at FROM list_items WHERE list_id = $1 ORDER BY is_completed, modified_at DESC",
listID,
)