forked from progrium/envy
/
students.go
269 lines (231 loc) · 7.29 KB
/
students.go
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package envy
import (
"encoding/json"
"fmt"
"log"
"net/http"
"strconv"
"html/template"
"github.com/gophertrain/envy/pkg"
"github.com/gorilla/mux"
"github.com/kr/pretty"
)
type SignupResponse struct {
Error bool
ErrorMessage string
ShellURL string
IDEURL string
Username string
}
type Server struct {
Router *mux.Router
Students pkg.StudentStorage
Courses pkg.CourseStorage
ExecManager *ExecManager
}
func NewServer(students pkg.StudentStorage, courses pkg.CourseStorage) *Server {
s := &Server{}
s.Students = students
s.Courses = courses
router := mux.NewRouter()
s.Router = router
router.HandleFunc("/manager/enroll", s.ServeEnroll).Methods("GET")
router.HandleFunc("/manager/enroll", s.Enroll).Methods("POST")
// TODO: Basic Auth
router.HandleFunc("/manager/courses/", s.AddCourse).Methods("POST")
router.HandleFunc("/manager/students/{id}", s.GetStudent).Methods("GET")
return s
}
func (s *Server) AddCourse(w http.ResponseWriter, req *http.Request) {
var v pkg.Course
if err := json.NewDecoder(req.Body).Decode(&v); err != nil {
http.Error(w, err.Error(), 400)
return
}
err := s.Courses.AddCourse(&v)
if err != nil {
log.Println(err)
http.Error(w, err.Error(), 500)
return
}
w.WriteHeader(201)
}
func (s *Server) ServeEnroll(w http.ResponseWriter, req *http.Request) {
t, err := template.New("body").Parse(form)
if err != nil {
log.Print("template parsing error: ", err)
}
err = t.Execute(w, &SignupResponse{})
if err != nil {
log.Print("template executing error: ", err)
}
}
func (s *Server) Enroll(w http.ResponseWriter, req *http.Request) {
t, err := template.New("body").Parse(form)
if err != nil {
log.Print("template parsing error: ", err)
}
wr := &SignupResponse{}
courseid := req.PostFormValue("coursetoken")
if courseid == "" {
w.WriteHeader(400)
e := t.Execute(w, &SignupResponse{Error: true, ErrorMessage: "Course Token Required"})
if e != nil {
log.Print("template executing error: ", err)
}
return
}
course, err := s.Courses.Validate(courseid)
if err != nil {
w.WriteHeader(400)
e := t.Execute(w, &SignupResponse{Error: true, ErrorMessage: "Bad Course Token"})
if e != nil {
log.Print("template executing error: ", err)
}
return
}
username := req.PostFormValue("username")
password := req.PostFormValue("password")
password2 := req.PostFormValue("password2")
if password != password2 {
w.WriteHeader(400)
e := t.Execute(w, &SignupResponse{Error: true, ErrorMessage: "Passwords don't match"})
if e != nil {
log.Print("template executing error: ", e)
}
return
}
name := req.PostFormValue("name")
email := req.PostFormValue("email")
student := &pkg.Student{
Username: username,
Password: password,
FullName: name,
Email: email,
Courses: []*pkg.Course{course},
}
exists, _ := s.Students.Exists(student)
if exists {
log.Print("enrolling existing student in course")
err := s.Students.Enroll(student, course)
if err != nil {
w.WriteHeader(400)
log.Print("enrolling existing student: ", err)
e := t.Execute(w, &SignupResponse{Error: true, ErrorMessage: "Error enrolling existing student in course."})
if e != nil {
log.Print("template executing error: ", e)
}
return
}
} else {
log.Print("enrolling new student in course")
err = s.Students.AddStudent(student)
if err != nil {
w.WriteHeader(400)
e := t.Execute(w, &SignupResponse{Error: true, ErrorMessage: err.Error()})
if e != nil {
log.Print("template executing error: ", e)
}
return
}
err = s.ExecManager.NewStudent(student)
if err != nil {
w.WriteHeader(400)
e := t.Execute(w, &SignupResponse{Error: true, ErrorMessage: err.Error()})
if e != nil {
log.Print("template executing error: ", err)
}
return
}
}
err = s.ExecManager.NewEnrollment(student, course)
if err != nil {
w.WriteHeader(400)
e := t.Execute(w, &SignupResponse{Error: true, ErrorMessage: err.Error()})
if e != nil {
log.Print("template executing error: ", err)
}
return
}
environ := GetEnviron(student.Username, student.Username)
pretty.Println(environ)
rc := environ.IDE(student.Username, student.Password)
log.Println("return code", rc)
w.WriteHeader(201)
wr.Username = student.Username
wr.ShellURL = fmt.Sprintf("https://students.brianketelsen.com/u/%s", student.Username)
wr.IDEURL = "https://ide.brianketelsen.com/"
e := t.Execute(w, wr)
if e != nil {
log.Print("template executing error: ", err)
}
}
func (s *Server) GetStudent(w http.ResponseWriter, req *http.Request) {
params := mux.Vars(req)
id, err := strconv.Atoi(params["id"])
if err != nil {
w.WriteHeader(500)
w.Write([]byte("error"))
}
student, err := s.Students.Student(id)
if err != nil {
w.WriteHeader(500)
w.Write([]byte("error"))
}
w.Write([]byte(fmt.Sprintf("%v", student)))
}
const form = `<!DOCTYPE html>
<html>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link href='http://fonts.googleapis.com/css?family=Varela+Round' rel='stylesheet' type='text/css'>
<script src="http://code.jquery.com/jquery-3.1.1.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
<body>
<div class="container">
{{ if .Error }}
<div class="alert alert-danger">
<strong>Error:<strong> {{.ErrorMessage}}
</div>
{{ end }}
{{ if .Username}}
<div class="alert alert-success">
<strong>Created<strong> {{.Username}} was created<br/>
<strong>Web IDE:<strong> <a target=new href="{{.IDEURL}}">Click Here</a>
</div>
{{ end }}
<div class="row centered-form">
<div class="col-xs-12 col-sm-8 col-md-4 col-sm-offset-2 col-md-offset-4">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Enter your user information to join:</h3>
</div>
<div class="panel-body">
<form role="form" action="/manager/enroll" method="POST">
<div class="form-group">
<input type="text" name="username" id="username" class="form-control input-sm" placeholder="Enter a Username">
</div>
<div class="form-group">
<input type="text" name="name" id="name" class="form-control input-sm" placeholder="Full Name">
</div>
<div class="form-group">
<input type="email" name="email" id="email" class="form-control input-sm" placeholder="Email Address">
</div>
<div class="form-group">
<input type="password" name="password" id="password" class="form-control input-sm" placeholder="Enter a Password">
</div>
<div class="form-group">
<input type="password" name="password2" id="password2" class="form-control input-sm" placeholder="Repeat Password">
</div>
<div class="form-group">
<input type="text" name="coursetoken" id="coursetoken" class="form-control input-sm" placeholder="CourseToken">
</div>
<input type="submit" value="Register" class="btn btn-info btn-block">
</form>
</div>
</div>
</div>
</div>
</div>
</body>
</html>`