@@ -21,5 +21,6 @@ /.env
 /.envrc
 /.pre-commit-config.yaml
 /frontend/static/base.css
+/frontent/error.html
 /data/
 /config.toml

@@ -12,6 +12,8 @@
 	"badc0de.net/pkg/flagutil"
 	"github.com/getsentry/sentry-go"
 
+	"go.alanpearce.eu/searchix/frontend"
+	"go.alanpearce.eu/searchix/internal/components"
 	"go.alanpearce.eu/searchix/internal/config"
 	"go.alanpearce.eu/searchix/internal/importer"
 	"go.alanpearce.eu/searchix/internal/index"
@@ -26,10 +28,11 @@ "print-default-config",
 		false,
 		"print default configuration and exit",
 	)
-	dev        = flag.Bool("dev", false, "enable live reloading and nicer logging")
-	replace    = flag.Bool("replace", false, "replace existing index and exit")
-	version    = flag.Bool("version", false, "print version information")
-	cpuprofile = flag.String("cpuprofile", "", "enable CPU profiling and save to `file`")
+	generateErrorPage = flag.Bool("generate-error-page", false, "generate error page and exit")
+	dev               = flag.Bool("dev", false, "enable live reloading and nicer logging")
+	replace           = flag.Bool("replace", false, "replace existing index and exit")
+	version           = flag.Bool("version", false, "print version information")
+	cpuprofile        = flag.String("cpuprofile", "", "enable CPU profiling and save to `file`")
 )
 
 func main() {
@@ -48,6 +51,22 @@ panic("can't write to standard output?!")
 		}
 		os.Exit(0)
 	}
+	if *generateErrorPage {
+		err := components.ErrorTemplate(components.TemplateData{
+			Source:        nil,
+			Sources:       []*config.Source{},
+			Query:         "",
+			ExtraHeadHTML: "",
+			Code:          0,
+			Message:       `{{placeholder "http.error.status_code"}} {{placeholder "http.error.status_text"}}`,
+			Assets:        frontend.Assets,
+		}).Render(os.Stdout)
+		if err != nil {
+			panic("failed to render error template: " + err.Error())
+		}
+		os.Exit(0)
+	}
+
 	if *cpuprofile != "" {
 		f, err := os.Create(*cpuprofile)
 		if err != nil {

@@ -15,3 +15,10 @@
 func ErrorPage(tdata TemplateData) g.Node {
 	return Page(tdata, Error(tdata))
 }
+
+func ErrorTemplate(tdata TemplateData) g.Node {
+	return Page(tdata, P(
+		Class("notice error"),
+		g.Raw(tdata.Message),
+	))
+}

@@ -21,11 +21,13 @@ Meta(Name("viewport"), Content("width=device-width, initial-scale=1")),
 				TitleEl(g.Text("Searchix"), g.If(config.DevMode, g.Text(" (Dev)"))),
 				g.Map(tdata.Assets.Stylesheets, css),
 				g.Raw(tdata.ExtraHeadHTML),
-				Link(
-					Rel("search"),
-					Type("application/opensearchdescription+xml"),
-					TitleAttr("Searchix "+sourceNameAndType(nil)),
-					Href(joinPath("opensearch.xml")),
+				g.If(len(tdata.Sources) > 0,
+					Link(
+						Rel("search"),
+						Type("application/opensearchdescription+xml"),
+						TitleAttr("Searchix "+sourceNameAndType(nil)),
+						Href(joinPath("opensearch.xml")),
+					),
 				),
 				g.Map(tdata.Sources, func(source *config.Source) g.Node {
 					return Link(
@@ -40,16 +42,18 @@ Body(
 				Header(
 					Nav(
 						H1(A(Href("/"), g.Text("Searchix"))),
-						A(
-							c.Classes{
-								"current": tdata.Source == nil,
-							},
-							g.If(
-								tdata.Source == nil,
-								Href("/"),
-								Href(joinPathQuery("/", tdata.Query)),
+						g.If(len(tdata.Sources) > 0,
+							A(
+								c.Classes{
+									"current": tdata.Source == nil,
+								},
+								g.If(
+									tdata.Source == nil,
+									Href("/"),
+									Href(joinPathQuery("/", tdata.Query)),
+								),
+								g.Text("All"),
 							),
-							g.Text("All"),
 						),
 						g.Map(tdata.Sources, func(source *config.Source) g.Node {
 							if tdata.Source != nil && tdata.Source.Name == source.Name {

@@ -46,6 +46,12 @@ "-X"
     "go.alanpearce.eu/searchix/internal/config.Version=v${version}"
   ];
 
+  postInstall = ''
+    install -d -m755 $out/lib/searchix/static
+    cp -r $src/frontend/static $out/lib/searchix
+    $out/bin/searchix-web --generate-error-page > $out/lib/searchix/error.html
+  '';
+
   modules = ../gomod2nix.toml;
 
   doCheck = false;