feat: share CRUD with cascade delete

internal/store/shares.go

@@ -0,0 +1,67 @@
+package store
+
+import "database/sql"
+
+type Share struct {
+	ID             string
+	FileID         string
+	Token          string
+	PasswordHash   string
+	ExpiresAt      int64
+	CreatedAt      int64
+	LastAccessedAt int64
+}
+
+func (s *Store) ShareCreate(sh *Share) error {
+	_, err := s.db.Exec(
+		`INSERT INTO shares (id, file_id, token, password_hash, expires_at, created_at, last_accessed_at)
+		 VALUES (?, ?, ?, ?, ?, ?, ?)`,
+		sh.ID, sh.FileID, sh.Token, sh.PasswordHash, sh.ExpiresAt, sh.CreatedAt, sh.LastAccessedAt,
+	)
+	return err
+}
+
+func (s *Store) ShareGetByToken(token string) (*Share, error) {
+	row := s.db.QueryRow(
+		`SELECT id, file_id, token, password_hash, expires_at, created_at, last_accessed_at
+		 FROM shares WHERE token = ?`, token,
+	)
+	return scanShare(row)
+}
+
+func (s *Store) ShareList() ([]*Share, error) {
+	rows, err := s.db.Query(
+		`SELECT id, file_id, token, password_hash, expires_at, created_at, last_accessed_at
+		 FROM shares ORDER BY created_at DESC`,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var shares []*Share
+	for rows.Next() {
+		sh, err := scanShare(rows)
+		if err != nil {
+			return nil, err
+		}
+		shares = append(shares, sh)
+	}
+	return shares, rows.Err()
+}
+
+func (s *Store) ShareDelete(id string) error {
+	_, err := s.db.Exec(`DELETE FROM shares WHERE id = ?`, id)
+	return err
+}
+
+func scanShare(row interface {
+	Scan(dest ...any) error
+}) (*Share, error) {
+	sh := &Share{}
+	err := row.Scan(&sh.ID, &sh.FileID, &sh.Token, &sh.PasswordHash, &sh.ExpiresAt, &sh.CreatedAt, &sh.LastAccessedAt)
+	if err == sql.ErrNoRows {
+		return nil, err
+	}
+	return sh, err
+}