fixed PR issue

internal/api/handlers/repo_lookup.go

@@ -0,0 +1,55 @@
+package handlers
+
+// repo_lookup.go — shared helper used by all handlers that resolve
+// {owner}/{repo} URL params to a repository row.
+//
+// The owner segment can be either a user username (user-owned repo) or a
+// workspace handle (workspace-owned repo). This tries user-namespace first,
+// then workspace-namespace, so the lookup is always unambiguous.
+
+import (
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+	"xorm.io/xorm"
+
+	"github.com/forgeo/forgebucket/internal/models"
+)
+
+// resolveRepoID resolves /{owner}/{repo} to a repository ID.
+// It tries user namespace first, then workspace namespace.
+// Returns (repoID, true) on success or writes a 404 and returns (0, false).
+func resolveRepoID(db *xorm.Engine, w http.ResponseWriter, r *http.Request) (int64, bool) {
+	repo, ok := resolveRepo(db, w, r)
+	if !ok {
+		return 0, false
+	}
+	return repo.ID, true
+}
+
+// resolveRepo is the full repo lookup returning the Repository struct.
+func resolveRepo(db *xorm.Engine, w http.ResponseWriter, r *http.Request) (*models.Repository, bool) {
+	ownerName := chi.URLParam(r, "owner")
+	repoName := chi.URLParam(r, "repo")
+
+	// 1. Try user namespace.
+	var u models.User
+	if found, _ := db.Where("username = ?", ownerName).Get(&u); found {
+		var repo models.Repository
+		if found2, _ := db.Where("owner_id = ? AND name = ?", u.ID, repoName).Get(&repo); found2 {
+			return &repo, true
+		}
+	}
+
+	// 2. Try workspace namespace.
+	var ws models.Workspace
+	if found, _ := db.Where("handle = ?", ownerName).Get(&ws); found {
+		var repo models.Repository
+		if found2, _ := db.Where("workspace_id = ? AND name = ?", ws.ID, repoName).Get(&repo); found2 {
+			return &repo, true
+		}
+	}
+
+	jsonError(w, "repository not found", http.StatusNotFound)
+	return nil, false
+}