func HandleCreateMessage(ctx context.Context, w http.ResponseWriter, r *http.Request) {
uid, ok := CurrentUserID(r)
if !ok {
// TODO - redirect to authentication page, but remember form content
tmpl.Render500(w, errors.New("not implemented"))
return
}
tid, err := strconv.Atoi(param(ctx, "topicid"))
if err != nil || tid < 0 {
tmpl.Render404(w, "Topic does not exist")
return
}
content := strings.TrimSpace(r.FormValue("content"))
if len(content) < 3 {
tmpl.Render400(w, "Message too short")
return
}
if len(content) > 20000 {
tmpl.Render400(w, "Message too long")
return
}
tx, err := DB(ctx).Beginx()
if err != nil {
tmpl.Render500(w, err)
return
}
defer tx.Rollback()
store := NewStore(tx)
t, err := store.TopicByID(uint(tid))
if err != nil {
if err == ErrNotFound {
tmpl.Render404(w, "Topic does not exist")
} else {
tmpl.Render500(w, err)
}
return
}
m, err := store.CreateMessage(t.TopicID, uid, content, time.Now())
if err != nil {
tmpl.Render500(w, err)
return
}
if err := tx.Commit(); err != nil {
tmpl.Render500(w, err)
return
}
murl := fmt.Sprintf(
"/t/%d/%s?page=%d#m%d",
t.TopicID, t.Topic.Slug(), t.Pages(), m.MessageID)
http.Redirect(w, r, murl, http.StatusFound)
}
func HandleCreateTopic(ctx context.Context, w http.ResponseWriter, r *http.Request) {
uid, ok := CurrentUserID(r)
if !ok {
// TODO - redirect to authentication page, but remember form content
tmpl.Render500(w, errors.New("not implemented"))
return
}
var c struct {
Title string
TitleErr string
Category uint
CategoryErr string
Categories []*Category
Content string
ContentErr string
}
if r.Method == "GET" {
if cats, err := NewStore(DB(ctx)).Categories(); err != nil {
tmpl.Render500(w, err)
} else {
c.Categories = cats
tmpl.Render(w, http.StatusOK, "page_create_topic", c)
}
return
}
if err := r.ParseMultipartForm(2 << 20); err != nil {
tmpl.Render400(w, err.Error())
return
}
c.Content = strings.TrimSpace(r.FormValue("content"))
c.Title = strings.TrimSpace(r.FormValue("title"))
if len(c.Title) < 3 {
c.TitleErr = "Title must be at least 3 characters long"
}
if len(c.Title) > 200 {
c.TitleErr = "Title must not be longer than 200 characters"
}
if len(c.Content) < 3 {
c.ContentErr = "Content must be at least 3 characters long"
}
if len(c.Content) > 10000 {
c.ContentErr = "Content must be shorter than 10000 characters"
}
if raw := r.FormValue("category"); raw == "" {
c.CategoryErr = "Category is required"
} else {
if cat, err := strconv.Atoi(r.FormValue("category")); err == nil {
c.Category = uint(cat)
} else {
c.CategoryErr = "Invalid category"
}
}
if c.TitleErr != "" || c.ContentErr != "" || c.CategoryErr != "" {
if cats, err := NewStore(DB(ctx)).Categories(); err != nil {
tmpl.Render500(w, err)
} else {
c.Categories = cats
tmpl.Render(w, http.StatusBadRequest, "page_create_topic", c)
}
return
}
tx, err := DB(ctx).Beginx()
if err != nil {
tmpl.Render500(w, err)
return
}
defer tx.Rollback()
store := NewStore(tx)
now := time.Now()
topic, err := store.CreateTopic(c.Title, uid, c.Category, now)
if err != nil {
tmpl.Render500(w, err)
return
}
if _, err := store.CreateMessage(topic.TopicID, uid, c.Content, now); err != nil {
tmpl.Render500(w, err)
return
}
if err := tx.Commit(); err != nil {
tmpl.Render500(w, err)
return
}
turl := fmt.Sprintf("/t/%d/%s", topic.TopicID, topic.Slug())
http.Redirect(w, r, turl, http.StatusFound)
}