package main

import (
	"bytes"
	"io"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"path"

	"srs.epita.fr/fic-server/qa/api"

	"github.com/julienschmidt/httprouter"
)

var BaseURL = "/"

var indexTmpl []byte

func getIndexHtml(w io.Writer) {
	if len(indexTmpl) == 0 {
		if file, err := os.Open(path.Join(StaticDir, "index.html")); err != nil {
			log.Println("Unable to open index.html: ", err)
		} else {
			defer file.Close()

			if indexTmpl, err = ioutil.ReadAll(file); err != nil {
				log.Println("Cannot read whole index.html: ", err)
			} else {
				indexTmpl = bytes.Replace(indexTmpl, []byte("{{.urlbase}}"), []byte(path.Clean(path.Join(BaseURL+"/", "nuke"))[:len(path.Clean(path.Join(BaseURL+"/", "nuke")))-4]), -1)
			}
		}
	}

	w.Write(indexTmpl)
}

func init() {
	api.Router().GET("/", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		getIndexHtml(w)
	})

	api.Router().GET("/exercices/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		getIndexHtml(w)
	})
	api.Router().GET("/themes/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		getIndexHtml(w)
	})

	api.Router().GET("/css/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
	api.Router().GET("/fonts/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
	api.Router().GET("/img/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
	api.Router().GET("/js/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
	api.Router().GET("/views/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
}