wide/playground/playgrounds.go

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// Copyright (c) 2014-2018, b3log.org & hacpai.com
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//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package shell include playground related mainipulations.
package playground
import (
"html/template"
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"io/ioutil"
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"math/rand"
"net/http"
"os"
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"path/filepath"
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"strconv"
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"strings"
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"time"
"github.com/b3log/wide/conf"
"github.com/b3log/wide/i18n"
"github.com/b3log/wide/log"
"github.com/b3log/wide/session"
"github.com/b3log/wide/util"
"github.com/gorilla/websocket"
)
// Logger.
var logger = log.NewLogger(os.Stdout)
// IndexHandler handles request of Playground index.
func IndexHandler(w http.ResponseWriter, r *http.Request) {
// create a HTTP session
httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
httpSession.Values["id"] = strconv.Itoa(rand.Int())
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httpSession.Values["username"] = "playground"
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}
httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
httpSession.Save(r, w)
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username := httpSession.Values["username"].(string)
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locale := conf.Wide.Locale
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// try to load file
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code := conf.HelloWorld
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fileName := "8b7cc38b4c12e6fde5c4d15a4f2f32e5.go" // MD5 of HelloWorld.go
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if strings.HasSuffix(r.URL.Path, ".go") {
fileNameArg := r.URL.Path[len("/playground/"):]
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filePath := filepath.Clean(conf.Wide.Playground + "/" + fileNameArg)
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bytes, err := ioutil.ReadFile(filePath)
if nil != err {
logger.Warn(err)
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} else {
code = string(bytes)
fileName = fileNameArg
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}
}
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query := r.URL.Query()
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embed := false
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embedArg, ok := query["embed"]
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if ok && "true" == embedArg[0] {
embed = true
}
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disqus := false
disqusArg, ok := query["disqus"]
if ok && "true" == disqusArg[0] {
disqus = true
}
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model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
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"sid": session.WideSessions.GenId(), "pathSeparator": conf.PathSeparator,
"codeMirrorVer": conf.CodeMirrorVer,
"code": template.HTML(code), "ver": conf.WideVersion, "year": time.Now().Year(),
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"embed": embed, "disqus": disqus, "fileName": fileName}
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wideSessions := session.WideSessions.GetByUsername(username)
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logger.Debugf("User [%s] has [%d] sessions", username, len(wideSessions))
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t, err := template.ParseFiles("views/playground/index.html")
if nil != err {
logger.Error(err)
http.Error(w, err.Error(), 500)
return
}
t.Execute(w, model)
}
// WSHandler handles request of creating Playground channel.
func WSHandler(w http.ResponseWriter, r *http.Request) {
sid := r.URL.Query()["sid"][0]
conn, _ := websocket.Upgrade(w, r, nil, 1024, 1024)
wsChan := util.WSChannel{Sid: sid, Conn: conn, Request: r, Time: time.Now()}
ret := map[string]interface{}{"output": "Playground initialized", "cmd": "init-playground"}
err := wsChan.WriteJSON(&ret)
if nil != err {
return
}
session.PlaygroundWS[sid] = &wsChan
logger.Tracef("Open a new [PlaygroundWS] with session [%s], %d", sid, len(session.PlaygroundWS))
}