chore: support 'me' as the username for template author (#19204)

`author:me` to find my templates. Much nicer than knowing my own
username

coderd/searchquery/search.go

@@ -263,7 +263,7 @@ func Workspaces(ctx context.Context, db database.Store, query string, page coder
 	return filter, parser.Errors
 }
 
-func Templates(ctx context.Context, db database.Store, query string) (database.GetTemplatesWithFilterParams, []codersdk.ValidationError) {
+func Templates(ctx context.Context, db database.Store, actorID uuid.UUID, query string) (database.GetTemplatesWithFilterParams, []codersdk.ValidationError) {
 	// Always lowercase for all searches.
 	query = strings.ToLower(query)
 	values, errors := searchTerms(query, func(term string, values url.Values) error {
@@ -288,6 +288,11 @@ func Templates(ctx context.Context, db database.Store, query string) (database.G
 		AuthorUsername: parser.String(values, "", "author"),
 	}
 
+	if filter.AuthorUsername == codersdk.Me {
+		filter.AuthorID = actorID
+		filter.AuthorUsername = ""
+	}
+
 	parser.ErrorExcessParams(values)
 	return filter, parser.Errors
 }

coderd/searchquery/search_test.go

@@ -640,6 +640,7 @@ func TestSearchUsers(t *testing.T) {
 
 func TestSearchTemplates(t *testing.T) {
 	t.Parallel()
+	userID := uuid.New()
 	testCases := []struct {
 		Name                  string
 		Query                 string
@@ -688,6 +689,14 @@ func TestSearchTemplates(t *testing.T) {
 				},
 			},
 		},
+		{
+			Name:  "MyTemplates",
+			Query: "author:me",
+			Expected: database.GetTemplatesWithFilterParams{
+				AuthorUsername: "",
+				AuthorID:       userID,
+			},
+		},
 	}
 
 	for _, c := range testCases {
@@ -696,7 +705,7 @@ func TestSearchTemplates(t *testing.T) {
 			// Do not use a real database, this is only used for an
 			// organization lookup.
 			db, _ := dbtestutil.NewDB(t)
-			values, errs := searchquery.Templates(context.Background(), db, c.Query)
+			values, errs := searchquery.Templates(context.Background(), db, userID, c.Query)
 			if c.ExpectedErrorContains != "" {
 				require.True(t, len(errs) > 0, "expect some errors")
 				var s strings.Builder