#include "screen.h"

#include <M5Cardputer.h>

#include "fonts.h"

namespace roro {

bool Screen::begin() {
    canvas_.setColorDepth(8);  // RGB332: saves 32 KB of RAM (M1 Q46); theme colours are converted
    canvas_.setPsram(false);
    return canvas_.createSprite(theme::kWidth, theme::kHeight) != nullptr;
}

void Screen::render(AppManager& apps, const StatusInfo& status, const Toast* toast, const Question* question) {
    const auto& area = theme::kContent;
    App& app = apps.foreground();
    // An App that keeps what it drew: only the Status Bar is cleared, unless the App has changed
    // or a Toast or the help panel, drawn over it, has just gone.
    bool overlay = apps.help().isOpen() || toast || question, retains = app.retainsContent();
    if (overlayWas_ && !overlay) lost_ = true;
    if (retains && &app == lastApp_ && !lost_) {
        canvas_.fillRect(0, 0, theme::kWidth, area.y, theme::kBackground);
    } else {
        canvas_.fillSprite(theme::kBackground);
        if (retains) app.contentLost();
    }
    lastApp_ = &app;
    lost_ = false;
    overlayWas_ = overlay && retains;
    canvas_.setClipRect(area.x, area.y, area.w, area.h);
    app.draw(canvas_);
    if (apps.help().isOpen()) widgets::help(canvas_, apps.help());  // over the App, under the Status Bar
    if (question) widgets::dialog(canvas_, question->title, question->message, *question->dialog);
    canvas_.clearClipRect();
    widgets::statusBar(canvas_, status);
    if (toast) widgets::toast(canvas_, *toast);
    canvas_.pushSprite(&M5Cardputer.Display, 0, 0);
}

void Screen::renderUpdate(const std::string& title, const std::string& detail, int percent) {
    lost_ = true;
    canvas_.fillSprite(theme::kBackground);
    canvas_.setTextDatum(top_center);
    canvas_.setFont(&fonts::bold);
    canvas_.setTextColor(theme::kAccent);
    canvas_.drawString(title.c_str(), theme::kWidth / 2, 34);
    canvas_.setFont(&fonts::body);
    canvas_.setTextColor(theme::kText);
    canvas_.drawString(detail.c_str(), theme::kWidth / 2, 56);
    if (percent >= 0) {
        const int x = 20, y = 82, w = theme::kWidth - 40, h = 12;
        canvas_.drawRect(x, y, w, h, theme::kMuted);
        canvas_.fillRect(x + 1, y + 1, (w - 2) * percent / 100, h - 2, theme::kAccent);
        canvas_.drawString((std::to_string(percent) + "%").c_str(), theme::kWidth / 2, y + 18);
    }
    canvas_.setTextDatum(top_left);
    canvas_.pushSprite(&M5Cardputer.Display, 0, 0);
}

}  // namespace roro