chore(db): use context & add db helper

database/documents.go

@@ -0,0 +1,27 @@
+package database
+
+import (
+	"context"
+	"fmt"
+
+	"reichard.io/antholume/pkg/ptr"
+	"reichard.io/antholume/pkg/sliceutils"
+)
+
+func (d *DBManager) GetDocument(ctx context.Context, docID, userID string) (*GetDocumentsWithStatsRow, error) {
+	documents, err := d.Queries.GetDocumentsWithStats(ctx, GetDocumentsWithStatsParams{
+		ID:     ptr.Of(docID),
+		UserID: userID,
+		Limit:  1,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	document, found := sliceutils.First(documents)
+	if !found {
+		return nil, fmt.Errorf("document not found: %s", docID)
+	}
+
+	return &document, nil
+}