#include "app_keys.h"
#include "demo_app.h"

#include "ui/widgets.h"

namespace roro {

namespace {
const char* const kMenu[] = {"Text view", "Line editor", "Dialog", "Toast: info", "Toast: warning",
                             "Toast: burst of 5"};
const char* const kText =
    "Bienvenue sur roro9stack ! Ce texte teste le retour \xC3\xA0 la ligne automatique et les "
    "accents : \xC3\xA9t\xC3\xA9, \xC3\xA0 bient\xC3\xB4t, gar\xC3\xA7on, No\xC3\xABl, "
    "ma\xC3\xAEtre, o\xC3\xB9.\n\n"
    "Use ; and . to scroll, ` to go back. Fn+` always returns to the Launcher.\n\n"
    "Unbreakablewordthatislongerthanawholelineofthescreen to test hard breaks.";
}  // namespace

void DemoApp::onEnter() {
    page_ = Page::Menu;
    dialog_.reset();
    menu_.setCount(sizeof(kMenu) / sizeof(kMenu[0]));
}

void DemoApp::notify(const char* text, NotificationLevel level) {
    bus_.publish(Event::withText(EventType::Notification, text, static_cast<int32_t>(level)));
}

void DemoApp::help(std::vector<KeyHelp>& out) const {
    if (dialog_) return keys::add(out, keys::kDialog);
    if (page_ == Page::Editor) return keys::add(out, keys::kText);
    if (page_ == Page::Menu) keys::add(out, keys::kDemo);
}

bool DemoApp::onKey(const KeyEvent& e) {
    requestRedraw();
    if (dialog_) {
        dialog_->onKey(e);
        int r = dialog_->result();
        if (r != DialogModel::kPending) {
            notify(r == DialogModel::kCancelled ? "Dialog cancelled" : ("Chose " + dialog_->buttons()[r]).c_str(),
                   NotificationLevel::Info);
            dialog_.reset();
        }
        return true;
    }
    switch (page_) {
        case Page::Menu: return onMenuKey(e);
        case Page::Text:
            if (e.key == Key::Up && textScroll_ > 0) textScroll_--;
            else if (e.key == Key::Down && textScroll_ < textLineCount_ - 1) textScroll_++;
            else if (e.key == Key::Back) page_ = Page::Menu;
            return true;
        case Page::Editor:
            switch (e.key) {
                case Key::Char: editor_.insert(e.ch); break;
                case Key::Delete: editor_.backspace(); break;
                case Key::Left: editor_.left(); break;
                case Key::Right: editor_.right(); break;
                case Key::Up: editor_.home(); break;
                case Key::Down: editor_.end(); break;
                case Key::Select:
                    if (!editor_.text().empty()) notify(editor_.text().c_str(), NotificationLevel::Message);
                    break;
                case Key::Back: page_ = Page::Menu; break;
                default: break;
            }
            return true;
    }
    return false;
}

bool DemoApp::onMenuKey(const KeyEvent& e) {
    switch (e.key) {
        case Key::Up: menu_.up(); return true;
        case Key::Down: menu_.down(); return true;
        case Key::Select: break;
        default: return false;  // Back leaves the App
    }
    switch (menu_.selected()) {
        case 0: page_ = Page::Text; textScroll_ = 0; break;
        case 1: page_ = Page::Editor; break;
        case 2: dialog_.reset(new DialogModel({"Cancel", "Maybe", "OK"})); break;
        case 3: notify("Hello from the demo", NotificationLevel::Info); break;
        case 4: notify("Something needs attention", NotificationLevel::Warning); break;
        case 5:
            for (int i = 1; i <= 5; i++) notify(("Burst " + std::to_string(i)).c_str(), NotificationLevel::Info);
            break;
    }
    return true;
}

void DemoApp::draw(Canvas& c) {
    const auto& area = theme::kContent;
    switch (page_) {
        case Page::Menu:
            widgets::list(c, menu_, area, [](int i) { return std::string(kMenu[i]); });
            break;
        case Page::Text: {
            auto lines = wrapText(kText, area.w - 10, widgets::bodyMeasure(c));
            textLineCount_ = static_cast<int>(lines.size());
            widgets::textLines(c, lines, textScroll_, area);
            break;
        }
        case Page::Editor:
            c.setTextColor(theme::kMuted);
            c.drawString("A line editor", 4, area.y + 4);
            widgets::lineEditor(c, editor_, {4, area.y + 22, area.w - 8, 0});
            c.setTextColor(theme::kMuted);
            c.drawString((std::to_string(editor_.text().size()) + "/39 bytes").c_str(), 4, area.y + 44);
            break;
    }
    if (dialog_)
        widgets::dialog(c, "Dialog", "Left/Right or Tab to choose, Enter to confirm, ` to cancel.", *dialog_);
}

}  // namespace roro