package main

import (
	"fmt"
	"github.com/writeas/web-core/log"
	"net/http"
	"os"
	"path/filepath"
	"runtime/debug"
	"time"
)

func viewPage(w http.ResponseWriter, r *http.Request) {
	start := time.Now()
	defer func() {
		if e := recover(); e != nil {
			log.Error("%s: %s", e, debug.Stack())
			http.Error(w, "Error", http.StatusInternalServerError)
		}

		log.Info(fmt.Sprintf("\"%s %s\" %s \"%s\"", r.Method, r.RequestURI, time.Since(start), r.UserAgent()))
	}()

	name := r.URL.Path[1:]
	if name == "" {
		name = "index"
	}

	// Make sure the page exists
	if _, err := os.Stat(filepath.Join(pagesDir, name+".tmpl")); os.IsNotExist(err) {
		log.Info(filepath.Join(pagesDir, name, "index.tmpl"))
		if _, err := os.Stat(filepath.Join(pagesDir, name, "index.tmpl")); os.IsNotExist(err) {
			t, err := getTemplate("404")
			if err != nil {
				http.Error(w, err.Error(), http.StatusInternalServerError)
				return
			}

			w.WriteHeader(http.StatusNotFound)
			err = t.ExecuteTemplate(w, "base", nil)
			if err != nil {
				log.Info("Unable to render 404 page: %s", err)
			}
			return
		} else {
			name = filepath.Join(name, "index")
			log.Info("name is now %s", name)
		}
	}

	// Render the page
	t, err := getTemplate(name)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	p := struct {
		Path string
	}{
		Path: name,
	}

	err = t.ExecuteTemplate(w, "base", p)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}