From d83f4bca3f7026696a41225caac11807ed06fc2f Mon Sep 17 00:00:00 2001
From: Mitch Riedstra <mitch@riedstra.us>
Date: Tue, 24 Nov 2020 23:20:54 -0500
Subject: Add more comments. Expand the interface. Allow templates to more
 easily be rendered with external variables.

---
 http/main.go   | 27 ++-----------------------
 http/render.go | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+), 25 deletions(-)
 create mode 100644 http/render.go

(limited to 'http')

diff --git a/http/main.go b/http/main.go
index e09f610..c4726d8 100644
--- a/http/main.go
+++ b/http/main.go
@@ -9,7 +9,6 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
-	"strings"
 
 	"riedstra.dev/mitch/go-website/local"
 	"riedstra.dev/mitch/go-website/page"
@@ -21,7 +20,7 @@ import (
 // since an interface is used, you can swap this out with a different
 // library to load pages from different sources
 var NewPage func(string) page.Page = func(u string) page.Page {
-	return &local.Page{Path: u}
+	return local.NewPage(u)
 }
 
 // ReindexRedirectTo is the path that we'll redirect to when a call to rebuild
@@ -54,29 +53,7 @@ func PageHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	u = filepath.Join(".", u)
 
-	p := NewPage(u)
-	err := p.Render(w)
-	if err != nil {
-		if strings.HasSuffix(err.Error(), "no such file or directory") {
-			Logger.Printf("%s %s %d %s", r.RemoteAddr, r.Method, 404, u)
-			p = NewPage("404")
-			w.WriteHeader(404)
-			err := p.Render(w)
-			if err != nil {
-				Logger.Printf("%s %s path: %s while trying 404: %s", r.RemoteAddr, r.Method, u, err)
-				http.Error(w, "Internal server error", 500)
-				return
-			}
-			return
-		} else {
-			Logger.Printf("%s %s path: %s encountered: %s", r.RemoteAddr, r.Method, u, err)
-			http.Error(w, "Internal server error", 500)
-			return
-		}
-	}
-
-	Logger.Printf("%s %s %d %s", r.RemoteAddr, r.Method, 200, u)
-
+	RenderForPath(w, r, u)
 }
 
 func RebuildIndexHandler(w http.ResponseWriter, r *http.Request) {
diff --git a/http/render.go b/http/render.go
new file mode 100644
index 0000000..b73ae76
--- /dev/null
+++ b/http/render.go
@@ -0,0 +1,62 @@
+package http
+
+import (
+	"net/http"
+	"path/filepath"
+	"strings"
+)
+
+func Render(w http.ResponseWriter, r *http.Request,
+	path string, vars map[string]interface{}, statusCode int) {
+
+	u := r.URL.Path
+	if u == "/" {
+		u = "/index"
+	}
+	u = filepath.Join(".", u)
+
+	// Sepcifically use the specified path for the page
+	p := NewPage(path)
+
+	if vars != nil {
+		p.SetVars(vars)
+	}
+
+	err := p.Render(w)
+	if err != nil {
+		if strings.HasSuffix(err.Error(), "no such file or directory") {
+			Logger.Printf("%s %s %d %s", r.RemoteAddr, r.Method, 404, u)
+			p = NewPage("404")
+			w.WriteHeader(404)
+			err := p.Render(w)
+			if err != nil {
+				Logger.Printf("%s %s path: %s while trying 404: %s", r.RemoteAddr, r.Method, u, err)
+				http.Error(w, "Internal server error", 500)
+				return
+			}
+			return
+		} else {
+			Logger.Printf("%s %s path: %s encountered: %s", r.RemoteAddr, r.Method, u, err)
+			http.Error(w, "Internal server error", 500)
+			return
+		}
+	}
+
+	Logger.Printf("%s %s %d %s", r.RemoteAddr, r.Method, statusCode, u)
+
+}
+
+// RenderWithVars allows you to specify a specific page and whether or not
+// you wish to override vars. If left nil they will not be overridden.
+// Also see RenderForPath if you don't need to override them
+func RenderWithVars(w http.ResponseWriter, r *http.Request,
+	path string, vars map[string]interface{}) {
+
+	Render(w, r, path, vars, 200)
+}
+
+// RenderForPath takes the path to a page and finish up the rendering
+// Allowing you to place logic on what page is rendered by your handlers
+func RenderForPath(w http.ResponseWriter, r *http.Request, path string) {
+	RenderWithVars(w, r, path, nil)
+}
-- 
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