Phase 7: results & review

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/handlers/test.go

@@ -214,6 +214,20 @@ func (h *TestHandler) QuestionPost(w http.ResponseWriter, r *http.Request) {
 	http.Redirect(w, r, fmt.Sprintf("/test/%d/results", test.ID), http.StatusSeeOther)
 }
 
+// ResultItem holds per-question data for the results page.
+type ResultItem struct {
+	Question   *models.Question
+	Answers    []*ResultAnswer
+	UserRight  bool // user selected the correct answer
+	Unanswered bool // user skipped without selecting
+}
+
+// ResultAnswer annotates each answer with display markers.
+type ResultAnswer struct {
+	*models.Answer
+	UserPicked bool // user selected this answer
+}
+
 func (h *TestHandler) ResultsGet(w http.ResponseWriter, r *http.Request) {
 	user := auth.UserFromCtx(r.Context())
 	testID, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64)
@@ -226,8 +240,73 @@ func (h *TestHandler) ResultsGet(w http.ResponseWriter, r *http.Request) {
 		HTTPError(w, http.StatusNotFound)
 		return
 	}
+
+	testAnswers, err := h.repo.GetTestAnswers(testID)
+	if err != nil {
+		slog.Error("get test answers", "err", err)
+		HTTPError(w, http.StatusInternalServerError)
+		return
+	}
+	// Index test answers by question ID for quick lookup.
+	taByQ := make(map[string]*models.TestAnswer, len(testAnswers))
+	for _, ta := range testAnswers {
+		taByQ[ta.QuestionID] = ta
+	}
+
+	var items []ResultItem
+	nCorrect := 0
+	for _, qid := range test.QuestionIDs {
+		q, answers, err := h.repo.GetQuestion(qid)
+		if err != nil {
+			slog.Error("get question for results", "qid", qid, "err", err)
+			HTTPError(w, http.StatusInternalServerError)
+			return
+		}
+		ta := taByQ[qid]
+		var selectedID int64
+		unanswered := ta == nil || !ta.SelectedAnswerID.Valid
+		if !unanswered {
+			selectedID = ta.SelectedAnswerID.Int64
+		}
+		userRight := ta != nil && ta.IsCorrect.Valid && ta.IsCorrect.Bool
+		if userRight {
+			nCorrect++
+		}
+		ra := make([]*ResultAnswer, len(answers))
+		for i, a := range answers {
+			ra[i] = &ResultAnswer{
+				Answer:     a,
+				UserPicked: !unanswered && a.ID == selectedID,
+			}
+		}
+		items = append(items, ResultItem{
+			Question:   q,
+			Answers:    ra,
+			UserRight:  userRight,
+			Unanswered: unanswered,
+		})
+	}
+
+	var timeTaken string
+	if test.CompletedAt.Valid {
+		d := test.CompletedAt.Time.Sub(test.CreatedAt).Round(time.Second)
+		h := int(d.Hours())
+		m := int(d.Minutes()) % 60
+		s := int(d.Seconds()) % 60
+		if h > 0 {
+			timeTaken = fmt.Sprintf("%dh %dm %ds", h, m, s)
+		} else if m > 0 {
+			timeTaken = fmt.Sprintf("%dm %ds", m, s)
+		} else {
+			timeTaken = fmt.Sprintf("%ds", s)
+		}
+	}
+
 	data := BaseData(h.auth, r)
 	data["Test"] = test
+	data["Items"] = items
+	data["NCorrect"] = nCorrect
+	data["TimeTaken"] = timeTaken
 	h.render.Render(w, http.StatusOK, "test_results", data)
 }