Added edit functionalityv0.1.0

Added a new edit functionality and page with styling.
Other minor changes:
- Added assets folder served under /static/
- Created a new template edit.html
- grouped ideas.html and edit.html under t_idea
- Changed router to use mux and organized routes
- Added more checks on empty titles
- Added javascript to t_idea/index.html for intuitive button
  functionality

1 files changed, 69 insertions, 29 deletions

diff --git a/main.go b/main.go
index 329fc34..b8aef22 100644
--- a/main.go
+++ b/main.go
@@ -4,6 +4,7 @@ import (
 	_ "embed"
 	"encoding/gob"
 	"errors"
+	"fmt"
 	"html/template"
 	"io"
 	"log"
@@ -23,21 +24,25 @@ var Version string
 // layout for how the date should be output in html
 var DateLayout string = "02/01/2006 on 15:04"
 
-// template for /ideas
-//
-//go:embed ideas.html
-var ideas_html string
+// template for ideas html
+var (
+	//go:embed t_idea/index.html
+	ideas_html string
+	//go:embed t_idea/edit.html
+	idea_edit_html string
+)
 
 var Ideas []Idea
 
 // ToDo's
-// - [x] Add a post
-// - [x] Remove a post
-// - [ ] work with funcmaps in templates
+// - [ ] Create a Server out of this so you can run multiple instances
 // - [ ] Put a reaction on a post
+// - [x] edit a post
 // - [x] Store ideas to a file (encoder/gob)
 // - [x] Change the date format printing
 // - [x] outsource removing the posts to a separate cli tool
+// - [x] Add a post
+// - [x] Remove a post
 
 // Represents an idea
 // CreatedAt is a formatted date string
@@ -157,21 +162,27 @@ func main() {
 	if err != nil {
 		log.Fatalln(err)
 	}
+	_, err = tmpl.New("edit").Parse(idea_edit_html)
+	if err != nil {
+		log.Fatalln(err)
+	}
 
 	// TODO (Luca): Make the app more interactive by using websockets instead,
 	// such that adding, editing or commenting on an idea does not require to
 	// refresh the page.
 	// Another approach would be to use htmx?
+	//
 
-	http.HandleFunc("/ideas/", func(w http.ResponseWriter, r *http.Request) {
+	mux := http.NewServeMux()
+
+	fs := http.FileServer(http.Dir("assets/"))
+	mux.Handle("/static/", http.StripPrefix("/static/", fs))
+
+	mux.HandleFunc("GET /ideas/", func(w http.ResponseWriter, r *http.Request) {
 		tmpl.Execute(w, PageData{Ideas, ""})
 	})
 
-	http.HandleFunc("/create/", func(w http.ResponseWriter, r *http.Request) {
-		if r.Method != http.MethodPost {
-			http.Redirect(w, r, "/ideas/", http.StatusMovedPermanently)
-			return
-		}
+	mux.HandleFunc("POST /idea/create/", func(w http.ResponseWriter, r *http.Request) {
 		i := Idea{
 			Title:     r.FormValue("title"),
 			Author:    r.FormValue("author"),
@@ -195,20 +206,53 @@ func main() {
 		http.Redirect(w, r, "/ideas/", http.StatusMovedPermanently)
 	})
 
-	http.HandleFunc("/edit/", func(w http.ResponseWriter, r *http.Request) {
-		if r.Method != http.MethodPost {
-			http.Redirect(w, r, "/ideas/", http.StatusMovedPermanently)
+	mux.HandleFunc("GET /idea/edit/", func(w http.ResponseWriter, r *http.Request) {
+		t := r.URL.Query().Get("t")
+		if t == "" {
+			tmpl.Execute(w, PageData{Ideas, "You must provide a title."})
 			return
 		}
-		http.Redirect(w, r, "/ideas/", http.StatusMovedPermanently)
+
+		for _, i := range Ideas {
+			if i.Title == t {
+				tmpl.ExecuteTemplate(w, "edit", i)
+				return
+			}
+		}
+		tmpl.Execute(w, PageData{Ideas, "No idea with title '" + t + "'."})
 	})
 
-	http.HandleFunc("/delete/", func(w http.ResponseWriter, r *http.Request) {
-		if r.Method != http.MethodPost {
-			http.Redirect(w, r, "/ideas/", http.StatusMovedPermanently)
+	mux.HandleFunc("POST /idea/edit/", func(w http.ResponseWriter, r *http.Request) {
+		t := r.FormValue("title")
+		if t == "" {
+			tmpl.Execute(w, PageData{Ideas, "You must provide a title."})
 			return
 		}
+
+		var i *Idea
+		for j := range Ideas {
+			if Ideas[j].Title == t {
+				i = &Ideas[j]
+				break
+			}
+		}
+		if i.Title == "" {
+			tmpl.Execute(w, PageData{Ideas, "No idea with title '" + t + "'."})
+		}
+
+		i.Title = r.FormValue("title")
+		i.Text = r.FormValue("text")
+		log.Printf("Edited '%s'\n", i.Title)
+
+		http.Redirect(w, r, "/ideas/", http.StatusMovedPermanently)
+	})
+
+	mux.HandleFunc("POST /idea/delete/", func(w http.ResponseWriter, r *http.Request) {
 		t := r.FormValue("title")
+		if t == "" {
+			tmpl.Execute(w, PageData{Ideas, "You must provide a title."})
+			return
+		}
 		for i, v := range Ideas {
 			if t == v.Title {
 				log.Println("Deleted:", v.Title)
@@ -217,19 +261,15 @@ func main() {
 				return
 			}
 		}
-		tmpl.Execute(w, PageData{Ideas, "No idea with name '" + t + "'."})
+		tmpl.Execute(w, PageData{Ideas, "No idea with title '" + t + "'."})
 	})
 
-	http.HandleFunc("/comment/", func(w http.ResponseWriter, r *http.Request) {
-		if r.Method != http.MethodPost {
-			http.Redirect(w, r, "/ideas/", http.StatusMovedPermanently)
-			return
-		}
-		http.Redirect(w, r, "/ideas/", http.StatusMovedPermanently)
+	mux.HandleFunc("POST /comment/create/", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "Not implemented yet.")
 	})
 
-	log.Println("Listening on http://localhost:8080")
-	err = http.ListenAndServe(":8080", nil)
+	log.Println("Listening on http://localhost:8080/ideas")
+	err = http.ListenAndServe(":8080", mux)
 	if err != nil {
 		log.Fatalln(err)
 	}