package chat

import (
	"bytes"
	"io"
	"net/http"
	"path/filepath"

	"github.com/elazarl/go-bindata-assetfs"
	"github.com/gorilla/context"
	"golang.org/x/net/websocket"
)

//go:generate go get github.com/jteeuwen/go-bindata/...
//go:generate go get github.com/elazarl/go-bindata-assetfs/...
//go:generate rm -vf static.go
//go:generate go-bindata -o static.go -pkg=chat static/...

var prefix map[string]string

func addRoutes(sm *http.ServeMux, chat *Chat, staticFiles string) {
	prefix = map[string]string{
		"static": "/static/",
		"auth":   "/api/v0/auth/",
		"reset":  "/api/v0/auth/reset/",
		"logout": "/logout/",
	}

	if staticFiles == "" {
		logs.Debug("embedded static file serving")
		sm.Handle(
			prefix["static"],
			http.FileServer(
				&assetfs.AssetFS{
					Asset:    Asset,
					AssetDir: AssetDir,
				},
			),
		)
		sm.HandleFunc(
			"/",
			func(w http.ResponseWriter, req *http.Request) {
				data, err := Asset("static/index.html")
				if err != nil {
					http.Error(w, err.Error(), http.StatusNotFound)
					return
				}
				r := bytes.NewReader(data)
				io.Copy(w, r)
			},
		)
	} else {
		logs.Debug("setting up dev mode static file serving")
		sm.Handle(
			prefix["static"],
			http.StripPrefix(
				prefix["static"],
				http.FileServer(http.Dir(staticFiles)),
			),
		)
		sm.HandleFunc(
			"/",
			func(w http.ResponseWriter, req *http.Request) {
				http.ServeFile(w, req, filepath.Join(staticFiles, "index.html"))
			},
		)
	}

	sm.HandleFunc("/info/", info)
	sm.Handle("/ws/", websocket.Handler(chat.userLoop))

	context.ClearHandler(sm)
}