go-wiki/controller/router.go

113 lines
3.1 KiB
Go

package controller
import (
"fmt"
"html/template"
"net/http"
"regexp"
"github.com/rjNemo/go-wiki/model"
"github.com/rjNemo/go-wiki/service"
"github.com/rjNemo/go-wiki/settings"
)
// func ParseTemplates() *template.Template {
// return template.Must(template.ParseFiles("templates/edit.html", "templates/view.html")) // add slice of fileNAmes
// }
// Router dispatch the request to the corresponding route handlers.
func Router() {
// http.HandleFunc("/", loveHandler)
http.HandleFunc("/view/", makeHandler(viewHandler))
http.HandleFunc("/edit/", makeHandler(editHandler))
http.HandleFunc("/save/", makeHandler(saveHandler))
http.HandleFunc("/contact/", contactHandler)
http.HandleFunc("/contact/post/", postContactHandler)
http.HandleFunc("/", homeHandler)
}
// func loveHandler(w http.ResponseWriter, r *http.Request) {
// title := r.URL.Path[1:]
// p := model.NewPage(title, nil) // already a pointer
// renderTemplate(w, "love", p)
// }
func homeHandler(w http.ResponseWriter, r *http.Request) {
renderTemplate(w, "home", nil)
}
func viewHandler(w http.ResponseWriter, r *http.Request, title string) {
p, err := model.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 := model.LoadPage(title)
if err != nil {
p = model.NewPage(title, nil)
}
renderTemplate(w, "edit", p)
}
func saveHandler(w http.ResponseWriter, r *http.Request, title string) {
body := r.FormValue("body")
p := model.NewPage(title, []byte(body))
err := p.Save()
checkError(err, w)
http.Redirect(w, r, "/view/"+title, http.StatusFound)
}
func contactHandler(w http.ResponseWriter, r *http.Request) {
renderTemplate(w, "contact", nil)
}
func postContactHandler(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
checkError(err, w) // bad error handling
mail := parseContactForm(r)
mail.Send()
fmt.Println(mail)
renderTemplate(w, "contact_sent", nil)
}
func parseContactForm(r *http.Request) service.Mail {
return service.NewMail(r.PostFormValue("email"), r.PostFormValue("message"))
}
// var templates = template.Must(template.ParseFiles("templates/edit.html", "templates/view.html")) // add slice of fileNAmes
func renderTemplate(w http.ResponseWriter, tmpl string, p *model.Page) {
// err := templates.ExecuteTemplate(w, "templates/"+tmpl+".html", p)
t, err := template.ParseFiles(getTmplName("base"), getTmplName(tmpl))
checkError(err, w)
err = t.Execute(w, p)
checkError(err, w)
}
func getTmplName(tmpl string) string {
return settings.TmplDir + tmpl + ".html"
}
func checkError(err error, w http.ResponseWriter) {
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
var validPath = regexp.MustCompile("^/(edit|save|view)/([a-zA-Z0-9]+)$")
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])
}
}