Add customizable greeting to index page

Allow an organization to copy the greeting.html file out of the themes
directory, customize it, then point the greeting.file config option at
it so that it will survive Inbucket upgrades.

config/config.go

@@ -35,6 +35,7 @@ type WebConfig struct {
 	TemplateDir   string
 	TemplateCache bool
 	PublicDir     string
+	GreetingFile  string
 }
 
 type DataStoreConfig struct {
@@ -328,6 +329,13 @@ func parseWebConfig() error {
 	}
 	webConfig.PublicDir = str
 
+	option = "greeting.file"
+	str, err = Config.String(section, option)
+	if err != nil {
+		return fmt.Errorf("Failed to parse [%v]%v: '%v'", section, option, err)
+	}
+	webConfig.GreetingFile = str
+
 	return nil
 }
 

etc/devel.conf

@@ -81,6 +81,10 @@ template.cache=false
 # Path to the selected themes public (static) files
 public.dir=%(install.dir)s/themes/%(theme)s/public
 
+# Path to the greeting HTML displayed on front page, can
+# be moved out of installation dir for customization
+greeting.file=%(install.dir)s/themes/greeting.html
+
 #############################################################################
 [datastore]
 

etc/inbucket.conf

@@ -81,6 +81,10 @@ template.cache=true
 # Path to the selected themes public (static) files
 public.dir=%(install.dir)s/themes/%(theme)s/public
 
+# Path to the greeting HTML displayed on front page, can
+# be moved out of installation dir for customization
+greeting.file=%(install.dir)s/themes/greeting.html
+
 #############################################################################
 [datastore]
 

etc/unix-sample.conf

@@ -81,6 +81,10 @@ template.cache=true
 # Path to the selected themes public (static) files
 public.dir=%(install.dir)s/themes/%(theme)s/public
 
+# Path to the greeting HTML displayed on front page, can
+# be moved out of installation dir for customization
+greeting.file=%(install.dir)s/themes/greeting.html
+
 #############################################################################
 [datastore]
 

etc/win-sample.conf

@@ -81,6 +81,10 @@ template.cache=true
 # Path to the selected themes public (static) files
 public.dir=%(install.dir)s\themes\%(theme)s\public
 
+# Path to the greeting HTML displayed on front page, can
+# be moved out of installation dir for customization
+greeting.file=%(install.dir)s\themes\greeting.html
+
 #############################################################################
 [datastore]
 

themes/greeting.html

@@ -0,0 +1,9 @@
+<p>Inbucket is an email testing service; it will accept email for any email
+address and make it available to view without a password.</p>
+
+<p>To view email for a particular address, enter the username portion
+of the address into the box on the upper right and click <em>go</em>.</p>
+
+<p>This message can be customized by editing greeting.html.  Change the
+configuration option <code>greeting.file</code> if you'd like to move it
+outside of the Inbucket installation directory.</p>

themes/integral/templates/root/index.html

@@ -9,11 +9,4 @@
 </div>
 {{end}}
 
-{{define "content"}}
-<p>Inbucket is an email testing service; it will accept email for any email
-address and make it available to view without a password.</p>
-
-<p>To view email for a particular address, enter the username portion
-of the address into the box on the upper right and click <em>go</em>.</p>
-{{end}}
-
+{{define "content"}}{{.greeting}}{{end}}

web/root_controller.go

@@ -3,12 +3,20 @@ package web
 import (
 	"fmt"
 	"github.com/jhillyerd/inbucket/config"
+	"html/template"
+	"io/ioutil"
 	"net/http"
 )
 
 func RootIndex(w http.ResponseWriter, req *http.Request, ctx *Context) (err error) {
+	greeting, err := ioutil.ReadFile(config.GetWebConfig().GreetingFile)
+	if err != nil {
+		return fmt.Errorf("Failed to load greeting: %v", err)
+	}
+		
 	return RenderTemplate("root/index.html", w, map[string]interface{}{
 		"ctx": ctx,
+		"greeting": template.HTML(string(greeting)),
 	})
 }