Add expose_port previews with a Preview tab; leave setup to AGENTS.md

internal/store/preview.go

@@ -0,0 +1,77 @@
+package store
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+
+	"g.fc.run/misc/byre/internal/api"
+)
+
+const previewColumns = `task_id, name, port, created_at`
+
+func (s *Store) SetPreview(ctx context.Context, p api.Preview, actor string) ([]int, error) {
+	dropped := []int{}
+	err := s.write(ctx, func(tx *sql.Tx, emit emitFunc) error {
+		projectID := ""
+		err := tx.QueryRowContext(ctx, `SELECT project_id FROM tasks WHERE id = ? AND status = ?`, p.TaskId, string(api.TaskStatusActive)).Scan(&projectID)
+		if errors.Is(err, sql.ErrNoRows) {
+			return ErrNotFound
+		}
+		if err != nil {
+			return err
+		}
+
+		rows, err := tx.QueryContext(ctx, `DELETE FROM previews WHERE task_id = ? AND (name = ? OR port = ?) RETURNING port`, p.TaskId, p.Name, p.Port)
+		if err != nil {
+			return err
+		}
+		for rows.Next() {
+			port := 0
+			err = rows.Scan(&port)
+			if err != nil {
+				rows.Close()
+				return err
+			}
+			if port != p.Port {
+				dropped = append(dropped, port)
+			}
+		}
+		rows.Close()
+		err = rows.Err()
+		if err != nil {
+			return err
+		}
+
+		_, err = tx.ExecContext(ctx, `INSERT INTO previews (`+previewColumns+`) VALUES (?, ?, ?, ?)`, p.TaskId, p.Name, p.Port, formatTime(p.CreatedAt))
+		if err != nil {
+			return err
+		}
+		return emit(api.Event{Kind: "preview.exposed", ProjectId: &projectID, TaskId: &p.TaskId, Actor: actor, Payload: ToPayload(p)})
+	})
+	return dropped, err
+}
+
+func (s *Store) ListPreviews(ctx context.Context, taskID string) ([]api.Preview, error) {
+	rows, err := s.db.QueryContext(ctx, `SELECT `+previewColumns+` FROM previews WHERE task_id = ? ORDER BY name`, taskID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	previews := []api.Preview{}
+	for rows.Next() {
+		p := api.Preview{}
+		createdAt := ""
+		err = rows.Scan(&p.TaskId, &p.Name, &p.Port, &createdAt)
+		if err != nil {
+			return nil, err
+		}
+		p.CreatedAt, err = parseTime(createdAt)
+		if err != nil {
+			return nil, err
+		}
+		previews = append(previews, p)
+	}
+	return previews, rows.Err()
+}