awstin/galley
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base: awstin:6ff9b673abf6aeab5167ec442dd9d5b83203e644
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awstin:main
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compare: awstin:c1e8ee336d4888886c3e33ae7cea91a6ca19693b
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awstin:main

4 commits
6ff9b673ab ... c1e8ee336d

Author SHA1 Message Date
awstin
c1e8ee336d Adding static file handling 2025-10-03 09:39:30 -04:00
awstin
043b1ed7c6 Adding template organzing, handlers, page editing 2025-10-03 09:39:30 -04:00
awstin
2bf278c312 Adding test file read and write 2025-10-03 09:39:30 -04:00
Awstin
56d3e153cb Initial commit for galley 2025-10-03 09:39:30 -04:00
5 changed files with 112 additions and 0 deletions
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2
.gitignore vendored Normal file
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galley
data

87
galley.go Normal file
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package main
import (
"html/template"
"log"
"net/http"
"os"
"regexp"
)
// cache templates on initialization
var templates = template.Must(template.ParseFiles("tmpl/edit.html", "tmpl/view.html"))
var validPath = regexp.MustCompile("^/(edit|save|view)/([a-zA-Z0-9]+)$")
func main() {
http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))
http.HandleFunc("/view/", makeHandler(viewHandler))
http.HandleFunc("/edit/", makeHandler(editHandler))
http.HandleFunc("/save/", makeHandler(saveHandler))
log.Fatal(http.ListenAndServe(":8080", nil))
}
type Page struct {
Title string
Body []byte
}
func (p *Page) save() error {
filename := "data/" + p.Title + ".txt"
return os.WriteFile(filename, p.Body, 0600)
}
func loadPage(title string) (*Page, error) {
filename := "data/" + title + ".txt"
body, err := os.ReadFile(filename)
if err != nil {
return nil, err
}
return &Page{Title: title, Body: body}, nil
}
func viewHandler(w http.ResponseWriter, r *http.Request, title string) {
p, err := loadPage(title)
if err != nil {
http.Redirect(w, r, "/edit/"+title, http.StatusFound)
return
}
renderTemplate(w, "view", p)
}
func editHandler(w http.ResponseWriter, r *http.Request, title string) {
p, err := loadPage(title)
if err != nil {
p = &Page{Title: title}
}
renderTemplate(w, "edit", p)
}
func saveHandler(w http.ResponseWriter, r *http.Request, title string) {
body := r.FormValue("body")
p := &Page{Title: title, Body: []byte(body)}
err := p.save()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
http.Redirect(w, r, "/view/"+title, http.StatusFound)
}
func renderTemplate(w http.ResponseWriter, tmpl string, p *Page) {
err := templates.ExecuteTemplate(w, tmpl + ".html", p)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
// function that takes in and modifies a function
func makeHandler(fn func(http.ResponseWriter, *http.Request, string)) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
m := validPath.FindStringSubmatch(r.URL.Path)
if m == nil {
http.NotFound(w, r)
return
}
fn(w, r, m[2])
}
}

3
go.mod Normal file
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module galley
go 1.25.1

6
tmpl/edit.html Normal file
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<h1>Editing {{.Title}}</h1>
<form action="/save/{{.Title}}" method="POST">
<div><textarea name="body" rows="20" cols="80">{{printf "%s" .Body}}</textarea></div>
<div><input type="submit" value="Save"></div>
</form>

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tmpl/view.html Normal file
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<!doctype html>
<html lang="en">
<head>
<link href="/static/css/main.css" rel="stylesheet" />
</head>
<body>
<h1>{{.Title}}</h1>
<p>[<a href="/edit/{{.Title}}">edit</a>]</p>
<div>{{printf "%s" .Body}}<div>
</body>
</html>