support for cron based subscriptions management

server/subscription/repository/repository.go

@@ -0,0 +1,133 @@
+package repository
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/google/uuid"
+	"github.com/marcopiovanello/yt-dlp-web-ui/v3/server/subscription/data"
+	"github.com/marcopiovanello/yt-dlp-web-ui/v3/server/subscription/domain"
+)
+
+type Repository struct {
+	db *sql.DB
+}
+
+// Delete implements domain.Repository.
+func (r *Repository) Delete(ctx context.Context, id string) error {
+	conn, err := r.db.Conn(ctx)
+	if err != nil {
+		return err
+	}
+
+	defer conn.Close()
+
+	_, err = conn.ExecContext(ctx, "DELETE FROM subscriptions WHERE id = ?", id)
+
+	return err
+}
+
+// GetCursor implements domain.Repository.
+func (r *Repository) GetCursor(ctx context.Context, id string) (int64, error) {
+	conn, err := r.db.Conn(ctx)
+	if err != nil {
+		return -1, err
+	}
+
+	defer conn.Close()
+
+	row := conn.QueryRowContext(ctx, "SELECT rowid FROM subscriptions WHERE id = ?", id)
+
+	var rowId int64
+
+	if err := row.Scan(&rowId); err != nil {
+		return -1, err
+	}
+
+	return rowId, nil
+}
+
+// List implements domain.Repository.
+func (r *Repository) List(ctx context.Context, start int64, limit int) (*[]data.Subscription, error) {
+	conn, err := r.db.Conn(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	defer conn.Close()
+
+	var elements []data.Subscription
+
+	rows, err := conn.QueryContext(ctx, "SELECT rowid, * FROM subscriptions WHERE rowid > ? LIMIT ?", start, limit)
+	if err != nil {
+		return nil, err
+	}
+
+	for rows.Next() {
+		var rowId int64
+		var element data.Subscription
+
+		if err := rows.Scan(
+			&rowId,
+			&element.Id,
+			&element.URL,
+			&element.Params,
+			&element.CronExpr,
+		); err != nil {
+			return &elements, err
+		}
+
+		elements = append(elements, element)
+	}
+
+	return &elements, nil
+}
+
+// Submit implements domain.Repository.
+func (r *Repository) Submit(ctx context.Context, sub *data.Subscription) (*data.Subscription, error) {
+	conn, err := r.db.Conn(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	defer conn.Close()
+
+	_, err = conn.ExecContext(
+		ctx,
+		"INSERT INTO subscriptions (id, url, params, cron) VALUES (?, ?, ?, ?)",
+		uuid.NewString(),
+		sub.URL,
+		sub.Params,
+		sub.CronExpr,
+	)
+
+	return sub, err
+}
+
+// UpdateByExample implements domain.Repository.
+func (r *Repository) UpdateByExample(ctx context.Context, example *data.Subscription) error {
+	conn, err := r.db.Conn(ctx)
+	if err != nil {
+		return err
+	}
+
+	defer conn.Close()
+
+	_, err = conn.ExecContext(
+		ctx,
+		"UPDATE subscriptions SET url = ?, params = ?, cron = ? WHERE id = ? OR url = ?",
+		example.URL,
+		example.Params,
+		example.CronExpr,
+		example.Id,
+		example.URL,
+	)
+
+	return err
+}
+
+func New(db *sql.DB) domain.Repository {
+	return &Repository{
+		db: db,
+	}
+}