// +build dev

package main

import (
	"flag"
	"net/http"
	"os"
	"path"
	"path/filepath"

	"github.com/julienschmidt/httprouter"
)

var StaticDir string = "htdocs/"

func init() {
	Router().GET("/", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, "index.html"))
	})
	Router().GET("/auth", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, "index.html"))
	})
	Router().GET("/grades", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, "index.html"))
	})
	Router().GET("/surveys", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, "index.html"))
	})
	Router().GET("/surveys/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, "index.html"))
	})
	Router().GET("/users", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, "index.html"))
	})
	Router().GET("/users/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, "index.html"))
	})
	Router().GET("/css/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		serveStaticAsset(w, r)
	})
	Router().GET("/fonts/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		serveStaticAsset(w, r)
	})
	Router().GET("/img/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		serveStaticAsset(w, r)
	})
	Router().GET("/js/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		serveStaticAsset(w, r)
	})
	Router().GET("/views/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		serveStaticAsset(w, r)
	})

	flag.StringVar(&StaticDir, "static", StaticDir, "Directory containing static files")
}

func serveStaticAsset(w http.ResponseWriter, r *http.Request) {
	http.StripPrefix("/", http.FileServer(http.Dir(StaticDir))).ServeHTTP(w, r)
}

func sanitizeStaticOptions() error {
	StaticDir, _ := filepath.Abs(StaticDir)
	if _, err := os.Stat(StaticDir); os.IsNotExist(err) {
		StaticDir, _ = filepath.Abs(filepath.Join(filepath.Dir(os.Args[0]), "htdocs"))
		if _, err := os.Stat(StaticDir); os.IsNotExist(err) {
			return err
		}
	}
	return nil
}