131 lines
4.1 KiB
Go
131 lines
4.1 KiB
Go
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package main
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import (
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"encoding/json"
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"log/slog"
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"math/rand"
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"net/http"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"text/template"
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"time"
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"git.andreafazzi.eu/andrea/probo/models"
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)
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var Dir = "data"
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type ExamSession []*models.Exam
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func generateRandomID() string {
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id := ""
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for i := 0; i < 6; i++ {
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id += strconv.Itoa(rand.Intn(9) + 1)
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}
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return id
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}
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func createExamSessionHandler(w http.ResponseWriter, r *http.Request) {
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var p ExamSession
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err := json.NewDecoder(r.Body).Decode(&p)
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if err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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id := generateRandomID()
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path := filepath.Join(Dir, id)
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err = os.MkdirAll(path, os.ModePerm)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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for _, exam := range p {
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file, err := os.Create(filepath.Join(path, strconv.Itoa(exam.Participant.Token)) + ".json")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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defer file.Close()
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err = json.NewEncoder(file).Encode(exam)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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response := map[string]string{"id": id}
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json.NewEncoder(w).Encode(response)
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}
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func getExamHandler(w http.ResponseWriter, r *http.Request) {
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urlParts := strings.Split(r.URL.Path, "/")
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examID := urlParts[1]
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token := urlParts[2]
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filePath := filepath.Join(Dir, examID, token+".json")
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data, err := os.ReadFile(filePath)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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exam := new(models.Exam)
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err = json.Unmarshal(data, &exam)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "text/html")
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tmpl := template.Must(template.New("exam").Parse(`
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<!DOCTYPE html>
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<html>
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<head>
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<title>{{.Name}}</title>
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</head>
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<body>
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<h1>{{.Name}}</h1>
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<h2>{{.Participant.Firstname}} {{.Participant.Lastname}}</h2>
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<form>
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{{range $index, $quiz := .Quizzes}}
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<h3>Question {{$index}}:</h3>
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<p>{{$quiz.Question.Text}}</p>
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{{range $answer := $quiz.Answers}}
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<input type="radio"
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id="{{$answer.ID}}" name="$answer.ID"
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value="{{$answer.Text}}">
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<label
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for="{{$answer.ID}}">{{$answer.Text}}</label><br>
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{{end}}
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<br>
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{{end}}
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<input type="submit" value="Invia">
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</form>
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</body>
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</html>
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`))
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err = tmpl.Execute(w, exam)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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func main() {
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mux := http.NewServeMux()
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mux.HandleFunc("/create", createExamSessionHandler)
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mux.HandleFunc("/", getExamHandler)
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slog.Info("Probo server started", "at", time.Now())
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http.ListenAndServe(":8080", mux)
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}
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