Jānis Kacēns
177b4e8fd8
- Full library home page: question list with per-user mastery stats,
search/source filter, sort (A-Z, weakest first, most-seen), source
breakdown in header, Take a test CTA.
- GET/POST /questions/{id}: view and edit question text, source, answers;
radio-select correct answer; shows seen×/correct% stat.
- POST /questions/{id}/delete: hard delete (cascades to answers via FK).
- repo: ListQuestions supports SortWeakest/SortMostSeen via LEFT JOIN;
added CountBySource, UpdateQuestion, UpdateAnswers, DeleteQuestion.
- render: added pct template func (correct*100/seen).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
113 lines
2.5 KiB
Go
113 lines
2.5 KiB
Go
package handlers
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import (
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"fmt"
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"log/slog"
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"net/http"
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"strconv"
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"github.com/go-chi/chi/v5"
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"qbank/internal/auth"
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"qbank/internal/db"
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)
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type QuestionHandler struct {
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auth *auth.Manager
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repo *db.Repo
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render *Renderer
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}
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func NewQuestionHandler(a *auth.Manager, repo *db.Repo, r *Renderer) *QuestionHandler {
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return &QuestionHandler{auth: a, repo: repo, render: r}
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}
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func (h *QuestionHandler) Show(w http.ResponseWriter, r *http.Request) {
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id := chi.URLParam(r, "id")
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user := auth.UserFromCtx(r.Context())
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q, answers, err := h.repo.GetQuestion(id)
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if err != nil {
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HTTPError(w, http.StatusNotFound)
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return
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}
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stats, _ := h.repo.GetStatsForUser(user.ID, []string{id})
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data := BaseData(h.auth, r)
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data["Question"] = q
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data["Answers"] = answers
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data["Stat"] = stats[id]
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h.render.Render(w, http.StatusOK, "question", data)
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}
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func (h *QuestionHandler) Edit(w http.ResponseWriter, r *http.Request) {
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id := chi.URLParam(r, "id")
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if !h.auth.CheckCSRF(r) {
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HTTPError(w, http.StatusForbidden)
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return
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}
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r.Body = http.MaxBytesReader(w, r.Body, 1<<20)
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if err := r.ParseForm(); err != nil {
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HTTPError(w, http.StatusBadRequest)
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return
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}
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_, answers, err := h.repo.GetQuestion(id)
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if err != nil {
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HTTPError(w, http.StatusNotFound)
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return
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}
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text := r.FormValue("q_text")
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source := r.FormValue("source")
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correctIdx, _ := strconv.Atoi(r.FormValue("correct"))
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if err := h.repo.UpdateQuestion(id, text, source); err != nil {
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slog.Error("update question", "err", err)
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HTTPError(w, http.StatusInternalServerError)
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return
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}
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updates := make([]db.AnswerUpdate, len(answers))
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for i, a := range answers {
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updates[i] = db.AnswerUpdate{
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ID: a.ID,
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Text: r.FormValue(fmt.Sprintf("a_text_%d", i)),
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IsCorrect: i == correctIdx,
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}
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}
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if err := h.repo.UpdateAnswers(updates); err != nil {
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slog.Error("update answers", "err", err)
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HTTPError(w, http.StatusInternalServerError)
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return
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}
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h.auth.SetFlash(r, "Question saved.")
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http.Redirect(w, r, "/questions/"+id, http.StatusSeeOther)
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}
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func (h *QuestionHandler) Delete(w http.ResponseWriter, r *http.Request) {
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id := chi.URLParam(r, "id")
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if !h.auth.CheckCSRF(r) {
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HTTPError(w, http.StatusForbidden)
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return
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}
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r.Body = http.MaxBytesReader(w, r.Body, 4096)
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r.ParseForm()
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if err := h.repo.DeleteQuestion(id); err != nil {
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slog.Error("delete question", "err", err)
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HTTPError(w, http.StatusInternalServerError)
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return
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}
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h.auth.SetFlash(r, "Question deleted.")
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http.Redirect(w, r, "/", http.StatusSeeOther)
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}
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