#include "display.h"
#include "config.h"
#include "logo.h"


// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------

static void drawStatusScreen(TFT_eSPI &tft,
                             uint16_t bgColour,
                             uint16_t letterColour,
                             const char *letter) {
  tft.fillScreen(bgColour);

  // Outer ring
  tft.drawCircle(DISPLAY_CX, DISPLAY_CY, DISPLAY_RADIUS, COL_RING);
  tft.drawCircle(DISPLAY_CX, DISPLAY_CY, DISPLAY_RADIUS - 1, COL_RING);
  tft.drawCircle(DISPLAY_CX, DISPLAY_CY, DISPLAY_RADIUS - 2, COL_RING);
  tft.drawCircle(DISPLAY_CX, DISPLAY_CY, DISPLAY_RADIUS - 3, COL_RING);

  // "SYSTEM" label
  tft.setTextDatum(MC_DATUM);
  tft.setTextFont(4);
  tft.setTextSize(1);
  tft.setTextColor(COL_LABEL, bgColour);
  tft.drawString("SYSTEM", DISPLAY_CX, 72);

  // Separator line under label
  tft.drawFastHLine(DISPLAY_CX - 55, 88, 110, COL_LABEL);

  // Large system letter (A or B)
  tft.setTextFont(4);
  tft.setTextSize(3);
  tft.setTextColor(letterColour, bgColour);
  tft.setTextDatum(MC_DATUM);
  tft.drawString(letter, DISPLAY_CX, 135);

  // Separator line above ACTIVE
  tft.drawFastHLine(DISPLAY_CX - 55, 164, 110, COL_LABEL);

  // "ACTIVE" label
  tft.setTextFont(4);
  tft.setTextSize(1);
  tft.setTextColor(COL_LABEL, bgColour);
  tft.drawString("ACTIVE", DISPLAY_CX, 185);
}

// ---------------------------------------------------------------------------
// Public API
// ---------------------------------------------------------------------------

void displayShowSplash(TFT_eSPI &tft) {
  tft.fillScreen(TFT_BLACK);
  tft.setTextDatum(MC_DATUM);

  // "MMC" — large
  tft.setTextFont(4);
  tft.setTextSize(1);
  tft.setTextColor(TFT_WHITE, TFT_BLACK);
  tft.drawString("MMC", DISPLAY_CX, 80);

  // "SCOTTSDALE"
  tft.drawString("SCOTTSDALE", DISPLAY_CX, 120);

  // "2026"
  tft.drawString("2026", DISPLAY_CX, 160);

  tft.setTextSize(1);
  delay(SPLASH_MS);
}

void displayInit(TFT_eSPI &tft) {
  tft.init();
  tft.setRotation(0);
  tft.fillScreen(TFT_BLACK);
}

void displayShowLogo(TFT_eSPI &tft) {
  drawLogo(tft);
}

void displayBlank(TFT_eSPI &tft) {
  tft.fillScreen(TFT_BLACK);
}

void displayShowSystemA(TFT_eSPI &tft) {
  drawStatusScreen(tft, COL_BG_SYS_A, COL_LETTER_A, "A");
}

void displayShowSystemB(TFT_eSPI &tft) {
  drawStatusScreen(tft, COL_BG_SYS_B, COL_LETTER_B, "B");
}