package repository

import (
	"testing"

	"vidarchive/internal/models"
)

// MarkStarted must claim a download exactly once: the worker pool's Submit and
// its 2s queue checker can both enqueue the same queued download, and only one
// worker may actually process it.
func TestMarkStartedClaimsOnce(t *testing.T) {
	db := setupTestDB(t)
	defer db.Close()

	repo := NewDownloadRepository(db)
	d := &models.Download{URL: "https://example.com/v", Status: "queued"}
	if err := repo.Create(d); err != nil {
		t.Fatalf("create: %v", err)
	}

	claimed, err := repo.MarkStarted(d.ID)
	if err != nil {
		t.Fatalf("first MarkStarted: %v", err)
	}
	if !claimed {
		t.Fatal("first MarkStarted should claim the queued download")
	}

	claimed, err = repo.MarkStarted(d.ID)
	if err != nil {
		t.Fatalf("second MarkStarted: %v", err)
	}
	if claimed {
		t.Error("second MarkStarted should not re-claim a download that is already downloading")
	}
}