Mark unread turn summaries in the switcher and Project rows

internal/store/summaryreads.go

@@ -0,0 +1,61 @@
+package store
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+
+	"g.fc.run/misc/byre/internal/api"
+)
+
+func (s *Store) SummaryReads(ctx context.Context, login string) (map[string]int64, error) {
+	rows, err := s.db.QueryContext(ctx, `
+		SELECT summary_reads.task_id, summary_reads.seq FROM summary_reads
+		JOIN tasks ON tasks.id = summary_reads.task_id
+		WHERE summary_reads.login = ? AND tasks.status = ?
+	`, login, string(api.TaskStatusActive))
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	reads := map[string]int64{}
+	for rows.Next() {
+		taskID := ""
+		seq := int64(0)
+		err = rows.Scan(&taskID, &seq)
+		if err != nil {
+			return nil, err
+		}
+		reads[taskID] = seq
+	}
+	return reads, rows.Err()
+}
+
+func (s *Store) MarkSummaryRead(ctx context.Context, login, taskID string, seq int64) error {
+	return s.write(ctx, func(tx *sql.Tx, emit emitFunc) error {
+		err := tx.QueryRowContext(ctx, `SELECT id FROM tasks WHERE id = ?`, taskID).Scan(&taskID)
+		if errors.Is(err, sql.ErrNoRows) {
+			return fmt.Errorf("task %s: %w", taskID, ErrNotFound)
+		}
+		if err != nil {
+			return err
+		}
+		res, err := tx.ExecContext(ctx, `
+			INSERT INTO summary_reads (login, task_id, seq) VALUES (?, ?, ?)
+			ON CONFLICT (login, task_id) DO UPDATE SET seq = excluded.seq WHERE excluded.seq > summary_reads.seq
+		`, login, taskID, seq)
+		if err != nil {
+			return err
+		}
+		n, err := res.RowsAffected()
+		if err != nil {
+			return err
+		}
+		if n == 0 {
+			return nil
+		}
+		return emit(api.Event{Kind: "summary.read", Owner: &login, Actor: login, Payload: map[string]any{"task_id": taskID, "seq": seq}})
+	})
+}