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site-main.go
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site-main.go
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package main
import (
"context"
"fmt"
"html/template"
"net/http"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
)
var router *chi.Mux
type Page struct {
ID int `json:"id"`
Title string `json:"title"`
Content template.HTML `json:"content"`
}
func main() {
router = chi.NewRouter()
router.Use(middleware.Recoverer)
var err error
router.Get("/", GetHomepage)
router.Route("/pages", func(r chi.Router) {
r.Route("/{pageID}", func(r chi.Router) {
r.Use(PageCtx)
r.Get("/", GetPage) // GET /pages/1234
})
})
fs := http.FileServer(http.Dir("static"))
router.Handle("/static/*", http.StripPrefix("/static/", fs))
router.Handle("/favicon.ico", fs)
err = http.ListenAndServe(":8005", router)
catch(err)
}
func catch(err error) {
if err != nil {
fmt.Println(err)
panic(err)
}
}
func PageCtx(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
pageID := chi.URLParam(r, "pageID")
page, err := fileGetPage(pageID)
if err != nil {
fmt.Println(err)
http.Error(w, http.StatusText(404), 404)
return
}
ctx := context.WithValue(r.Context(), "page", page)
next.ServeHTTP(w, r.WithContext(ctx))
})
}
func GetHomepage(w http.ResponseWriter, r *http.Request) {
homepage, err := fileGetHomepage()
catch(err)
t, _ := template.ParseFiles("templates/html.go.tmpl", "templates/homepage.go.tmpl")
err = t.Execute(w, homepage)
catch(err)
}
func GetPage(w http.ResponseWriter, r *http.Request) {
page := r.Context().Value("page").(*Page)
t, _ := template.ParseFiles("templates/html.go.tmpl", "templates/page.go.tmpl")
err := t.Execute(w, page)
catch(err)
}