pregenerated segments, tolerant matching, profile segment list, segment map

src/lib/server/db.ts

@@ -450,6 +450,51 @@ export function segmentLeaderboard(segmentId: number): {
 	}[];
 }
 
+/** All segments a user has completed, with their best time, attempts, and rank. */
+export function userSegments(userId: number): {
+	id: number;
+	name: string;
+	distance_m: number;
+	elev_gain_m: number;
+	attempts: number;
+	best_s: number | null;
+	rank: number | null;
+}[] {
+	return db
+		.prepare(
+			`SELECT s.id, s.name, s.distance_m, s.elev_gain_m,
+			        count(e.id) attempts,
+			        min(e.elapsed_s) best_s,
+			        CASE WHEN min(e.elapsed_s) IS NULL THEN NULL ELSE (
+			          SELECT count(*) + 1 FROM (
+			            SELECT min(e2.elapsed_s) b FROM segment_efforts e2
+			            WHERE e2.segment_id = s.id AND e2.elapsed_s IS NOT NULL AND e2.user_id != @userId
+			            GROUP BY e2.user_id
+			          ) others WHERE others.b < min(e.elapsed_s)
+			        ) END rank
+			 FROM segments s JOIN segment_efforts e ON e.segment_id = s.id AND e.user_id = @userId
+			 GROUP BY s.id ORDER BY attempts DESC, s.name`
+		)
+		.all({ userId }) as {
+		id: number;
+		name: string;
+		distance_m: number;
+		elev_gain_m: number;
+		attempts: number;
+		best_s: number | null;
+		rank: number | null;
+	}[];
+}
+
+export function deleteSegment(id: number, userId: number): boolean {
+	// creators may delete their segments; system-generated ones (no creator)
+	// may be removed by any signed-in user
+	const result = db
+		.prepare('DELETE FROM segments WHERE id = ? AND (creator_id = ? OR creator_id IS NULL)')
+		.run(id, userId);
+	return result.changes > 0;
+}
+
 export function segmentEffortsForActivity(activityId: number): { segment_id: number; name: string; elapsed_s: number | null }[] {
 	return db
 		.prepare(