refactored routing/web serving logic

server/web/serve.go

@@ -0,0 +1,68 @@
+// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
+//
+// This software (Documize Community Edition) is licensed under
+// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
+//
+// You can operate outside the AGPL restrictions by purchasing
+// Documize Enterprise Edition and obtaining a commercial license
+// by contacting <sales@documize.com>.
+//
+// https://documize.com
+
+// Package web contains the Documize static web data.
+package web
+
+import (
+	"html/template"
+	"net/http"
+
+	"github.com/documize/community/core/api"
+	"github.com/documize/community/core/secrets"
+)
+
+const (
+	// SiteModeNormal serves app
+	SiteModeNormal = ""
+	// SiteModeOffline serves offline.html
+	SiteModeOffline = "1"
+	// SiteModeSetup tells Ember to serve setup route
+	SiteModeSetup = "2"
+	// SiteModeBadDB redirects to db-error.html page
+	SiteModeBadDB = "3"
+)
+
+// SiteInfo describes set-up information about the site
+var SiteInfo struct {
+	DBname, DBhash, Issue string
+}
+
+func init() {
+	SiteInfo.DBhash = secrets.GenerateRandomPassword() // do this only once
+}
+
+// EmberHandler serves HTML web pages
+func EmberHandler(w http.ResponseWriter, r *http.Request) {
+	filename := "index.html"
+	switch api.Runtime.Flags.SiteMode {
+	case SiteModeOffline:
+		filename = "offline.html"
+	case SiteModeSetup:
+		// NoOp
+	case SiteModeBadDB:
+		filename = "db-error.html"
+	default:
+		SiteInfo.DBhash = ""
+	}
+
+	data, err := Embed.Asset("bindata/" + filename)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	emberView := template.Must(template.New(filename).Parse(string(data)))
+
+	if err := emberView.Execute(w, SiteInfo); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+	}
+}