refactored blog

main.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"html/template"
 	"net/http"
+	"path/filepath"
 	"os"
 	"strings"
 )
@@ -22,19 +23,8 @@ var templates = template.Must(template.ParseFiles("templates/blog.tmpl", "templa
 
 func main() {
 
-	NewPostsCollection()
-
-	http.HandleFunc("/about/", aboutHandler)
-	http.HandleFunc("/past/", pastHandler)
-	http.HandleFunc("/contact/", contactHandler)
-	http.HandleFunc("/post/", postHandler)
-	http.HandleFunc("/", pastHandler)
-	//http.HandleFunc("/", blogHandler)
-	http.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir("images"))))
-	http.Handle("/css/", http.StripPrefix("/css/", http.FileServer(http.Dir("css"))))
-
-	//posts = PostsCollection[:]
-	setPostsCollection()
+	buildHandlers()
+	retrievePosts()
 
 	if os.Args[1] == "local" {
 		http.ListenAndServe(":8080", nil)
@@ -46,8 +36,21 @@ func main() {
 
 }
 
-func setPostsCollection() {
-	posts = PostsCollection[:]
+func retrievePosts() {
+	posts = nil
+	filepath.Walk("./posts", newPost)
+	posts = reversePosts()
+}
+
+func buildHandlers() {
+	http.HandleFunc("/about/", aboutHandler)
+	http.HandleFunc("/past/", pastHandler)
+	http.HandleFunc("/contact/", contactHandler)
+	http.HandleFunc("/post/", postHandler)
+	http.HandleFunc("/update", updateHandler)
+	http.HandleFunc("/", pastHandler)
+	http.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir("images"))))
+	http.Handle("/css/", http.StripPrefix("/css/", http.FileServer(http.Dir("css"))))
 }
 
 func errorHandler(w http.ResponseWriter, req *http.Request, status int) {
@@ -57,20 +60,6 @@ func errorHandler(w http.ResponseWriter, req *http.Request, status int) {
 	}
 }
 
-func blogHandler(w http.ResponseWriter, req *http.Request) {
-	if req.URL.Path != "/" {
-		errorHandler(w, req, http.StatusNotFound)
-		return
-	}
-	length := len(posts)
-	posts = posts[:3]
-	//posts = getNewestPosts(3)
-	page := Page{name, posts, "past"}
-	//page := Page{name, posts, "blog"}
-	renderTemplates(w, page)
-	posts = posts[:length]
-}
-
 func postHandler(w http.ResponseWriter, r *http.Request) {
 	title := strings.TrimPrefix(r.URL.Path, "/post/")
 	posts := []Post{getPostByURLTitle(title)}
@@ -93,6 +82,10 @@ func contactHandler(w http.ResponseWriter, r *http.Request) {
 	renderTemplates(w, page)
 }
 
+func updateHandler(w http.ResponseWriter, r *http.Request) {
+	retrievePosts()
+}
+
 func renderTemplates(w http.ResponseWriter, p Page) {
 	s1 := templates.Lookup("blog.tmpl")
 	err := s1.ExecuteTemplate(w, "blog", p)

postUtils.go

@@ -6,7 +6,6 @@ import (
 	"html/template"
 	"io/ioutil"
 	"os"
-	"path/filepath"
 	"strings"
 	"time"
 )
@@ -22,54 +21,7 @@ type Post struct {
 
 const htmlDateLayout = "2006-01-02"
 const normalDateLayout = "02 Jan 2006"
-
 var modTime time.Time
-var PostsCollection []Post
-
-func NewPostsCollection() {
-	verifyFolderModification()
-	initializeCollection()
-	go acquirePosts(100)
-}
-
-func initializeCollection() {
-	PostsCollection = nil
-	filepath.Walk("./posts", newPost)
-	PostsCollection = reversePosts()
-}
-
-func acquirePosts(duration time.Duration) {
-	for {
-		if verifyFolderModification() == true {
-			initializeCollection()
-			setPostsCollection()
-		}
-		time.Sleep(duration * time.Second)
-	}
-}
-
-func verifyFolderModification() bool {
-	f, err := os.Open("./posts")
-	if err != nil {
-		fmt.Println("file-error here: \n", f)
-		f.Close()
-		return false
-	}
-	info, err := f.Stat()
-	if err != nil {
-		fmt.Println("info here: \n", info)
-		f.Close()
-		return false
-	}
-	_modTime := info.ModTime()
-	if modTime != _modTime {
-		modTime = _modTime
-		f.Close()
-		return true
-	}
-	f.Close()
-	return false
-}
 
 func newPost(path string, f os.FileInfo, err error) error {
 	content, err := ioutil.ReadFile(path)
@@ -95,7 +47,7 @@ func newPost(path string, f os.FileInfo, err error) error {
 		template.HTML(string(content[:len(content)])),
 	}
 
-	PostsCollection = insertPostAccordingToDate(p, PostsCollection)
+	posts = insertPostAccordingToDate(p, posts)
 	return nil
 }
 
@@ -123,25 +75,16 @@ func getDate(n *html.Node) time.Time {
 }
 
 func reversePosts() []Post {
-	length := len(PostsCollection)
+	length := len(posts)
 	s := make([]Post, length)
 	for i := 0; i < length; i++ {
-		s[i] = PostsCollection[length-(i+1)]
+		s[i] = posts[length-(i+1)]
 	}
 	return s
 }
 
-func getNewestPosts(numberOfPosts int) []Post {
-	var posts []Post
-	l := len(PostsCollection)
-	for i := l - 1; i >= l-numberOfPosts; i-- {
-		posts = append(posts, PostsCollection[i])
-	}
-	return posts
-}
-
 func getPostByURLTitle(title string) Post {
-	for _, post := range PostsCollection {
+	for _, post := range posts {
 		if post.URLTitle == title {
 			return post
 		}
@@ -159,6 +102,6 @@ func insertPostAccordingToDate(post Post, arr []Post) []Post {
 			return s
 		}
 	}
-	PostsCollection = append(PostsCollection, post)
-	return PostsCollection
+	posts = append(posts, post)
+	return posts
 }