1 files changed, 88 insertions, 0 deletions
diff --git a/handler.go b/handler.go
new file mode 100644
index 0000000..09f5999
--- /dev/null
+++ b/handler.go
@@ -0,0 +1,88 @@
+package main
+
+import (
+	"fmt"
+	"html/template"
+	"net/http"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+// CreateHandler creates a Sally http.Handler
+func CreateHandler(config Config) http.Handler {
+	router := httprouter.New()
+	router.RedirectTrailingSlash = false
+
+	router.GET("/", indexHandler{config: config}.Handle)
+
+	for name, pkg := range config.Packages {
+		handle := packageHandler{
+			pkgName: name,
+			pkg:     pkg,
+			config:  config,
+		}.Handle
+		router.GET(fmt.Sprintf("/%s", name), handle)
+		router.GET(fmt.Sprintf("/%s/*path", name), handle)
+	}
+
+	return router
+}
+
+type indexHandler struct {
+	config Config
+}
+
+func (h indexHandler) Handle(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
+	if err := indexTemplate.Execute(w, h.config); err != nil {
+		http.Error(w, err.Error(), 500)
+	}
+}
+
+var indexTemplate = template.Must(template.New("index").Parse(`
+<!DOCTYPE html>
+<html>
+    <body>
+        <ul>
+            {{ range $key, $value := .Packages }}
+	  	        <li>{{ $key }} - {{ $value.Repo }}</li>
+	        {{ end }}
+        </ul>
+    </body>
+</html>
+`))
+
+type packageHandler struct {
+	pkgName string
+	pkg     Package
+	config  Config
+}
+
+func (h packageHandler) Handle(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+	canonicalURL := fmt.Sprintf("%s/%s", h.config.URL, h.pkgName)
+	data := struct {
+		Repo         string
+		CanonicalURL string
+		GodocURL     string
+	}{
+		Repo:         h.pkg.Repo,
+		CanonicalURL: canonicalURL,
+		GodocURL:     fmt.Sprintf("https://godoc.org/%s%s", canonicalURL, ps.ByName("path")),
+	}
+	if err := packageTemplate.Execute(w, data); err != nil {
+		http.Error(w, err.Error(), 500)
+	}
+}
+
+var packageTemplate = template.Must(template.New("package").Parse(`
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta name="go-import" content="{{ .CanonicalURL }} git https://{{ .Repo }}">
+        <meta name="go-source" content="{{ .CanonicalURL }} https://{{ .Repo }} https://{{ .Repo }}/tree/master{/dir} https://{{ .Repo }}/tree/master{/dir}/{file}#L{line}">
+        <meta http-equiv="refresh" content="0; url={{ .GodocURL }}">
+    </head>
+    <body>
+        Nothing to see here. Please <a href="{{ .GodocURL }}">move along</a>.
+    </body>
+</html>
+`))