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package handlers
import (
"demoon/config"
"demoon/internal/database/repos"
"demoon/internal/models"
"html/template"
"log/slog"
"net/http"
"os"
"strconv"
)
// Handlers structure
type Handlers struct {
cfg config.Config
log *slog.Logger
repo repos.FullRepo
}
// NewHandlers constructor
func NewHandlers(
cfg config.Config, l *slog.Logger, repo repos.FullRepo,
) *Handlers {
if l == nil {
l = slog.New(slog.NewJSONHandler(os.Stdout, nil))
}
h := &Handlers{
cfg: cfg,
log: l,
repo: repo,
}
return h
}
func (h *Handlers) Ping(w http.ResponseWriter, r *http.Request) {
h.log.Info("got ping request")
w.Write([]byte("pong"))
}
func (h *Handlers) HandleAnswer(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
h.log.Error("failed to parse form", "error", err)
abortWithError(w, "Invalid form data")
return
}
selectedIndex := r.FormValue("selected")
questionID := r.FormValue("question_id")
if selectedIndex == "" || questionID == "" {
h.log.Error("missing form values", "selected", selectedIndex, "question_id", questionID)
abortWithError(w, "Missing required fields")
return
}
h.log.Info("answer received",
"selected", selectedIndex,
"question_id", questionID)
question, err := h.repo.DBGetQuestion(questionID)
if err != nil {
h.log.Error("failed to get question", "error", err, "question_id", questionID)
abortWithError(w, "Question not found")
return
}
// Convert selectedIndex to int for comparison
selectedIdx, err := strconv.Atoi(selectedIndex)
if err != nil {
h.log.Error("invalid selected index", "error", err, "selected", selectedIndex)
abortWithError(w, "Invalid answer selection")
return
}
// Validate selected index is within bounds
if selectedIdx < 0 || selectedIdx > 3 {
h.log.Error("selected index out of bounds", "selected", selectedIndex)
abortWithError(w, "Invalid answer selection")
return
}
selectedIdx++ // in db index starts from 1
feedback := ""
if selectedIdx == int(question.CorrectIndex) {
feedback = `<div data-testid="feedback" class="feedback">Correct! 🎉</div>`
} else {
feedback = `<div data-testid="feedback" class="feedback">Wrong answer! The correct answer was: ` + getCorrectOption(question) + `</div>`
}
w.Header().Set("Content-Type", "text/html")
w.Write([]byte(feedback))
}
func getCorrectOption(q *models.Question) string {
switch q.CorrectIndex {
case 0:
return q.Option1
case 1:
return q.Option2
case 2:
return q.Option3
case 3:
return q.Option4
default:
return ""
}
}
func (h *Handlers) MainPage(w http.ResponseWriter, r *http.Request) {
tmpl, err := template.ParseGlob("components/*.html")
if err != nil {
abortWithError(w, err.Error())
return
}
testQuestion := &models.Question{
ID: 1,
Text: "___ du keine Zweifel daran? (Test Question)",
Option1: "Haben",
Option2: "Hast",
Option3: "Hat",
Option4: "Habt",
CorrectIndex: 1,
Requirement: "Choose the correct verb form",
Explanation: "Use 'Hast' for 2nd person singular",
Status: 0,
ExamID: 1,
MixedID: 101,
}
err = tmpl.ExecuteTemplate(w, "main", testQuestion)
if err != nil {
h.log.Error("failed to render template", "error", err)
abortWithError(w, "Failed to render page")
}
}
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