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Base64 encode note titles

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This commit is contained in:
Maximilian Friedersdorff 2025-06-27 22:56:50 +01:00
parent eb0c264ad7
commit 6f8796c83f
6 changed files with 78 additions and 22 deletions
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14
internal/conf/templates/base.tmpl.html
View file

@ -1,3 +1,15 @@
{{define "navLinks"}}
{{end}}
{{define "navExtra"}}
<form class="row row-cols-lg-auto align-items-center" method="GET" action="{{ .urlNew }}">
<div class="col-12">
<input class="form-control mr-sm-2" type="text" placeholder="Title" aria-label="Title" name="title">
</div>
<div class="col-12">
<button class="btn btn-success my-2 my-sm-0" type="submit">New Note</button>
</div>
</form>
{{end}}
{{define "base"}} {{define "base"}}
<!doctype html> <!doctype html>
<html lang='en'> <html lang='en'>
@ -23,7 +35,9 @@
<li class="nav-item"> <li class="nav-item">
<a class="nav-link" href="/notes/">All Notes</a> <a class="nav-link" href="/notes/">All Notes</a>
</li> </li>
{{template "navLinks" .}}
</ul> </ul>
{{template "navExtra" .}}
</div> </div>
</nav> </nav>
<div class="container"> <div class="container">

3
internal/conf/templates/edit.tmpl.html
View file

@ -1,4 +1,5 @@
{{define "title"}}Edit {{.note.Title}}{{end}} {{define "title"}}Edit: {{.note.Title}}{{end}}
{{define "navExtra"}}<!-- -->{{end}}
{{define "main"}} {{define "main"}}
<form action="{{.urlSave}}" method="POST"> <form action="{{.urlSave}}" method="POST">

6
internal/conf/templates/list.tmpl.html
View file

@ -1,10 +1,10 @@
{{define "title"}}All Notes{{end}} {{define "title"}}All Notes{{end}}
{{define "main"}} {{define "main"}}
<div class="list-group list-group-flush"> <div class="list-group list-group-flush">
{{range $title := .titles}} {{range $note := .notes}}
<a class="list-group-item list-group-item-action d-flex justify-content-between" <a class="list-group-item list-group-item-action d-flex justify-content-between"
href="{{$title}}/"> href="{{$note.Url}}/">
<span>{{$title}}</span> <span>{{$note.Title}}</span>
<img src="/static/icons/eye.svg" alt="Edit"> <img src="/static/icons/eye.svg" alt="Edit">
</a> </a>
{{end}} {{end}}

21
internal/notes/notes.go
View file

@ -4,6 +4,7 @@ package notes
import ( import (
"bytes" "bytes"
"encoding/base64"
"fmt" "fmt"
"html/template" "html/template"
"log" "log"
@ -29,7 +30,7 @@ func fmtPath(path string) string {
// Save a note to a path derived from the title // Save a note to a path derived from the title
func (n *Note) Save() error { func (n *Note) Save() error {
filename := filepath.Join(conf.Conf.NotesDir, fmtPath(n.Title)) filename := filepath.Join(conf.Conf.NotesDir, fmtPath(n.EncodedTitle()))
return os.WriteFile(filename, n.Body, 0600) return os.WriteFile(filename, n.Body, 0600)
} }
@ -50,12 +51,13 @@ func (n *Note) Render() {
} }
// Load a note from the disk. The path is derived from the title // Load a note from the disk. The path is derived from the title
func LoadNote(title string) (*Note, error) { func LoadNote(encodedTitle string) (*Note, error) {
filename := filepath.Join(conf.Conf.NotesDir, fmtPath(title)) filename := filepath.Join(conf.Conf.NotesDir, fmtPath(encodedTitle))
body, err := os.ReadFile(filename) body, err := os.ReadFile(filename)
if err != nil { if err != nil {
return nil, err return nil, err
} }
title := DecodeTitle(encodedTitle)
return &Note{Title: title, Body: body}, nil return &Note{Title: title, Body: body}, nil
} }
@ -63,3 +65,16 @@ func DeleteNote(title string) error {
filename := filepath.Join(conf.Conf.NotesDir, fmtPath(title)) filename := filepath.Join(conf.Conf.NotesDir, fmtPath(title))
return os.Remove(filename) return os.Remove(filename)
} }
func (n *Note) EncodedTitle() string {
return base64.StdEncoding.EncodeToString([]byte(n.Title))
}
func DecodeTitle(encodedTitle string) string {
title, err := base64.StdEncoding.DecodeString(encodedTitle)
if err != nil {
log.Printf("Couldn't decode base64 string '%s': %s", encodedTitle, err)
}
return string(title)
}

53
internal/notes/views/views.go
View file

@ -19,12 +19,13 @@ func GetRoutes(prefix string) *http.ServeMux {
myurls = urls.URLs{ myurls = urls.URLs{
Prefix: prefix, Prefix: prefix,
URLs: map[string]urls.URL{ URLs: map[string]urls.URL{
"list": {Path: "/", Protocol: "GET", Handler: list},
"new": {Path: "/new", Protocol: "GET", Handler: new},
"view_": {Path: "/{note}", Protocol: "GET", Handler: view}, "view_": {Path: "/{note}", Protocol: "GET", Handler: view},
"view": {Path: "/{note}/", Protocol: "GET", Handler: view}, "view": {Path: "/{note}/", Protocol: "GET", Handler: view},
"delete": {Path: "/{note}/delete/", Protocol: "GET", Handler: delete}, "delete": {Path: "/{note}/delete/", Protocol: "GET", Handler: delete},
"edit": {Path: "/{note}/edit/", Protocol: "GET", Handler: edit}, "edit": {Path: "/{note}/edit/", Protocol: "GET", Handler: edit},
"save": {Path: "/{note}/edit/save/", Protocol: "POST", Handler: save}, "save": {Path: "/{note}/edit/save/", Protocol: "POST", Handler: save},
"list": {Path: "/", Protocol: "GET", Handler: list},
}, },
} }
return myurls.GetRouter() return myurls.GetRouter()
@ -51,13 +52,14 @@ func view(w http.ResponseWriter, r *http.Request) {
} }
func edit(w http.ResponseWriter, r *http.Request) { func edit(w http.ResponseWriter, r *http.Request) {
title := r.PathValue("note") encodedTitle := r.PathValue("note")
note, err := notes.LoadNote(title) note, err := notes.LoadNote(encodedTitle)
if err != nil { if err != nil {
title := notes.DecodeTitle(encodedTitle)
note = &notes.Note{Title: title} note = &notes.Note{Title: title}
} }
urlSave := myurls.Reverse("save", urls.Repl{"note": title}) urlSave := myurls.Reverse("save", urls.Repl{"note": encodedTitle})
context := templ.Ctx{"note": note, "urlSave": urlSave, "text": string(note.Body)} context := templ.Ctx{"note": note, "urlSave": urlSave, "text": string(note.Body)}
err = templ.RenderTemplate(w, "edit.tmpl.html", context) err = templ.RenderTemplate(w, "edit.tmpl.html", context)
if err != nil { if err != nil {
@ -67,17 +69,25 @@ func edit(w http.ResponseWriter, r *http.Request) {
} }
} }
func new(w http.ResponseWriter, r *http.Request) {
title := r.FormValue("title")
note := &notes.Note{Title: title}
urlEdit := myurls.Reverse("edit", urls.Repl{"note": note.EncodedTitle()})
http.Redirect(w, r, urlEdit, http.StatusFound)
}
func delete(w http.ResponseWriter, r *http.Request) { func delete(w http.ResponseWriter, r *http.Request) {
title := r.PathValue("note") encodedTitle := r.PathValue("note")
err := notes.DeleteNote(title) err := notes.DeleteNote(encodedTitle)
if err != nil { if err != nil {
log.Print(err.Error()) log.Print(err.Error())
http.Error(w, "Couldn't delete note", http.StatusInternalServerError) http.Error(w, "Couldn't delete note", http.StatusInternalServerError)
return return
} }
urlDelete := myurls.Reverse("list", urls.Repl{}) urlList := myurls.Reverse("list", urls.Repl{})
http.Redirect(w, r, urlDelete, http.StatusFound) http.Redirect(w, r, urlList, http.StatusFound)
} }
func save(w http.ResponseWriter, r *http.Request) { func save(w http.ResponseWriter, r *http.Request) {
@ -88,11 +98,16 @@ func save(w http.ResponseWriter, r *http.Request) {
note := &notes.Note{Title: title, Body: []byte(body)} note := &notes.Note{Title: title, Body: []byte(body)}
note.Save() note.Save()
if oldTitle != title { if oldTitle != note.EncodedTitle() {
notes.DeleteNote(oldTitle) notes.DeleteNote(oldTitle)
} }
http.Redirect(w, r, myurls.Reverse("view", urls.Repl{"note": title}), http.StatusFound) http.Redirect(w, r, myurls.Reverse("view", urls.Repl{"note": note.EncodedTitle()}), http.StatusFound)
}
type titleAndUrl struct {
Title string
Url string
} }
func list(w http.ResponseWriter, r *http.Request) { func list(w http.ResponseWriter, r *http.Request) {
@ -103,16 +118,26 @@ func list(w http.ResponseWriter, r *http.Request) {
return return
} }
titles := make([]string, 0) titlesAndUrls := make([]titleAndUrl, 0)
for _, f := range files { for _, f := range files {
if !f.IsDir() { if !f.IsDir() {
title := strings.TrimSuffix(f.Name(), filepath.Ext(f.Name())) encodedTitle := strings.TrimSuffix(f.Name(), filepath.Ext(f.Name()))
titles = append(titles, title) title := notes.DecodeTitle(encodedTitle)
log.Printf("Found note %s (title '%s')", encodedTitle, title)
titlesAndUrls = append(
titlesAndUrls,
titleAndUrl{Title: title, Url: myurls.Reverse("view", urls.Repl{"note": encodedTitle})},
)
log.Print(titlesAndUrls)
} }
} }
err = templ.RenderTemplate(w, "list.tmpl.html", templ.Ctx{"titles": titles}) urlNew := myurls.Reverse("new", urls.Repl{})
err = templ.RenderTemplate(w, "list.tmpl.html", templ.Ctx{"notes": titlesAndUrls, "urlNew": urlNew})
if err != nil { if err != nil {
log.Print(err.Error()) log.Print(err.Error())
http.Error(w, "Internal Server Error", http.StatusInternalServerError) http.Error(w, "Internal Server Error", http.StatusInternalServerError)

3
internal/templ/templ.go
View file

@ -11,6 +11,7 @@ import (
type Ctx map[string]any type Ctx map[string]any
func RenderTemplate(w http.ResponseWriter, tmpl string, context any) error { func RenderTemplate(w http.ResponseWriter, tmpl string, context any) error {
var err error
files := []string{ files := []string{
filepath.Join("templates", "base.tmpl.html"), filepath.Join("templates", "base.tmpl.html"),
filepath.Join("templates", tmpl), filepath.Join("templates", tmpl),
@ -25,6 +26,6 @@ func RenderTemplate(w http.ResponseWriter, tmpl string, context any) error {
} }
t, err := template.ParseFS(conf.Templates, files...) t, err := template.ParseFS(conf.Templates, files...)
t.ExecuteTemplate(w, "base", context) err = t.ExecuteTemplate(w, "base", context)
return err return err
} }