feat(golang): include user defined routes from *_routes.go files

In order to include custom routes:
- create a file <name>_routes.go
- define a function "register<Name>Routes" that accepts 2 arguments (router and database)

Part of #27

examples/go/chi/mysql/app.go

@@ -40,6 +40,7 @@ func main() {
 
     r := chi.NewRouter()
     registerRoutes(r, db)
+    registerCustomRoutes(r, db)
 
     port := os.Getenv("PORT")
     if port == "" {

examples/go/chi/mysql/custom_routes.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/go-chi/chi"
+	"github.com/jmoiron/sqlx"
+)
+
+func registerCustomRoutes(r chi.Router, db *sqlx.DB) {
+
+	r.Get("/custom/route", func(w http.ResponseWriter, r *http.Request) {
+		result := map[string]bool{
+			"custom": true,
+		}
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(&result)
+	})
+
+}

src/cli.js

@@ -104,7 +104,8 @@ const createApp = async (destDir, { lang }) => {
         `${__dirname}/templates/${fileName}.ejs`,
         {
             // @todo #27 Document usage of user defined routes
-            'customRouteFilenames': customRouters
+            'customRouteFilenames': customRouters,
+            'capitalize': capitalize,
         }
     )
 

src/templates/app.go.ejs

@@ -1,3 +1,10 @@
+<%
+// "custom_routes.go" => "registerCustomRoutes"
+function fileName2registerRouterFunc(filename) {
+    const routerName = filename.replace(/_routes\.go$/, '')
+    return `register${capitalize(routerName)}Routes`
+}
+-%>
 package main
 
 import "fmt"
@@ -40,6 +47,11 @@ func main() {
 
     r := chi.NewRouter()
     registerRoutes(r, db)
+<% customRouteFilenames.forEach(filename => {
+    const registerRouterFunc = fileName2registerRouterFunc(filename)
+-%>
+    <%- registerRouterFunc %>(r, db)
+<% }) -%>
 
     port := os.Getenv("PORT")
     if port == "" {