#include "NumericStepperActivity.h"

#include <GfxRenderer.h>
#include <I18n.h>

#include <algorithm>
#include <cstdio>

#include "activities/ActivityResult.h"
#include "MappedInputManager.h"
#include "components/UITheme.h"
#include "fontIds.h"

void NumericStepperActivity::onEnter() {
  Activity::onEnter();
  requestUpdate();
}

void NumericStepperActivity::onExit() { Activity::onExit(); }

void NumericStepperActivity::loop() {
  if (mappedInput.wasPressed(MappedInputManager::Button::Back)) {
    ActivityResult r;
    r.isCancelled = true;
    setResult(std::move(r));
    finish();
    return;
  }

  if (mappedInput.wasPressed(MappedInputManager::Button::Confirm)) {
    setResult(PageResult{.page = static_cast<uint32_t>(value)});
    finish();
    return;
  }

  // Side buttons: ±1
  if (mappedInput.wasPressed(MappedInputManager::Button::Up)) {
    if (value < maxValue) {
      value++;
      requestUpdate();
    }
    return;
  }

  if (mappedInput.wasPressed(MappedInputManager::Button::Down)) {
    if (value > minValue) {
      value--;
      requestUpdate();
    }
    return;
  }

  // Front face buttons: ±10
  if (mappedInput.wasPressed(MappedInputManager::Button::Right)) {
    value = std::min(value + 10, maxValue);
    requestUpdate();
    return;
  }

  if (mappedInput.wasPressed(MappedInputManager::Button::Left)) {
    value = std::max(value - 10, minValue);
    requestUpdate();
    return;
  }
}

void NumericStepperActivity::render(RenderLock&&) {
  renderer.clearScreen();

  const auto pageWidth = renderer.getScreenWidth();
  const int lineHeight12 = renderer.getLineHeight(UI_12_FONT_ID);

  const auto& metrics = UITheme::getInstance().getMetrics();
  GUI.drawHeader(renderer, Rect{0, metrics.topPadding, pageWidth, metrics.headerHeight}, title.c_str());

  char valueStr[16];
  snprintf(valueStr, sizeof(valueStr), "%d", value);

  const int textWidth = renderer.getTextWidth(UI_12_FONT_ID, valueStr);
  const int startX = (pageWidth - textWidth) / 2;
  const int valueY = metrics.topPadding + metrics.headerHeight + 60;

  constexpr int highlightPad = 10;
  renderer.fillRoundedRect(startX - highlightPad, valueY - 4, textWidth + highlightPad * 2, lineHeight12 + 8, 6,
                           Color::LightGray);
  renderer.drawText(UI_12_FONT_ID, startX, valueY, valueStr, true);

  const int arrowX = pageWidth / 2;
  const int arrowUpY = valueY - 20;
  const int arrowDownY = valueY + lineHeight12 + 12;
  constexpr int arrowSize = 6;
  for (int row = 0; row < arrowSize; row++) {
    renderer.drawLine(arrowX - row, arrowUpY + row, arrowX + row, arrowUpY + row);
  }
  for (int row = 0; row < arrowSize; row++) {
    renderer.drawLine(arrowX - row, arrowDownY + arrowSize - 1 - row, arrowX + row, arrowDownY + arrowSize - 1 - row);
  }

  const auto labels = mappedInput.mapLabels(tr(STR_BACK), tr(STR_SAVE), "-10", "+10");
  GUI.drawButtonHints(renderer, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
  GUI.drawSideButtonHints(renderer, "+1", "-1");

  renderer.displayBuffer();
}