2022-02-17 22:09:03 +01:00
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package main
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import (
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"fmt"
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"html/template"
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2022-03-02 22:33:43 +01:00
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"io/ioutil"
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2022-02-17 22:09:03 +01:00
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"log"
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"net/http"
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"os"
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2022-03-02 22:33:43 +01:00
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"strings"
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2022-02-17 22:09:03 +01:00
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)
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type Page struct {
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Title string
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Body []byte
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}
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func loadPage(title string) (*Page, error) {
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body, err := os.ReadFile(title + ".txt")
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if err != nil {
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return nil, err
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}
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return &Page{Title: title, Body: body}, nil
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}
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func (p *Page) savePage() error {
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filename := p.Title + ".txt"
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return os.WriteFile(filename, p.Body, 0600)
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}
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func viewHandler(w http.ResponseWriter, r *http.Request) {
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title := r.URL.Path[len("/view/"):]
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page, err := loadPage(title)
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if err != nil {
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fmt.Fprintf(w, "<h1>ERROR</h1><p>%s not found!</p>", title)
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} else {
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fmt.Fprintf(w, "<h1>%s</h1><p>%s</p>", page.Title, string(page.Body))
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}
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}
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func saveHandler(w http.ResponseWriter, r *http.Request) {
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title := r.URL.Path[len("/save/"):]
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p := &Page{Title: title, Body: []byte(r.FormValue("body"))}
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p.savePage()
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http.Redirect(w, r, "/view/"+title, http.StatusFound)
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}
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func editHandler(w http.ResponseWriter, r *http.Request) {
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title := r.URL.Path[len("/edit/"):]
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page, err := loadPage(title)
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if err != nil {
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page = &Page{Title: title}
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}
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t, _ := template.ParseFiles("edit.html")
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t.Execute(w, page)
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}
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2022-03-02 22:33:43 +01:00
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func indexHandler(w http.ResponseWriter, r *http.Request) {
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title := "index"
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//template, err := template.New("index").ParseFiles("templates/index.html")
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template, err := template.New("index").Parse("<!DOCTYPE html><ul>{{range $p := .}}<li><a href=view/{{$p.Title}}>{{$p.Title}}</a></li>{{end}}</ul>")
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if err != nil {
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fmt.Fprintf(w, "<h1>ERROR</h1><p>%s not found!</p>", title)
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} else {
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files, err := ioutil.ReadDir(".")
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if err != nil {
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log.Fatal(err)
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} else {
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var pages []Page
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for _, file := range files {
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if strings.Contains(file.Name(), ".txt") {
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page, _ := loadPage(strings.Split(file.Name(), ".")[0])
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pages = append(pages, *page)
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}
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}
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err = template.Execute(w, pages)
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if err != nil {
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log.Fatal(err)
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}
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}
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}
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}
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2022-02-17 22:09:03 +01:00
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func main() {
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http.HandleFunc("/view/", viewHandler)
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http.HandleFunc("/save/", saveHandler)
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http.HandleFunc("/edit/", editHandler)
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2022-03-02 22:33:43 +01:00
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http.HandleFunc("/", indexHandler)
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2022-02-17 22:09:03 +01:00
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log.Fatal(http.ListenAndServe(":8080", nil))
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}
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