/**
 * Copyright (c) 2025 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#include "ui.h"
#include "assert/assert.h"
#include "ui/uifps.h"
#include "util/memory.h"
#include "display/tileset/tileset_minogram.h"
#include "display/screen.h"
#include "ui/uitextbox.h"

ui_t UI;

errorret_t uiInit(void) {
  memoryZero(&UI, sizeof(ui_t));

  cameraInitOrthographic(&UI.camera);

  // Initialize UI components here
  uiSetFont(&TILESET_MINOGRAM);

  errorOk();
}

void uiUpdate(void) {
  // Update UI state here
  UI.camera.orthographic.left = 0;
  UI.camera.orthographic.right = SCREEN.width;
  UI.camera.orthographic.top = 0;
  UI.camera.orthographic.bottom = SCREEN.height;

  uiTextboxUpdate();
}

void uiRender(void) {
  cameraPushMatrix(&UI.camera);
  
  // Render UI elements here
  if(UI.fontTexture.width > 0) {
    uiFPSRender(UI.fontTileset, &UI.fontTexture);
    uiTextboxRender();
  }
  cameraPopMatrix();
}

errorret_t uiSetFont(const tileset_t *fontTileset) {
  if(UI.fontTexture.width > 0) {
    textureDispose(&UI.fontTexture);
    UI.fontTexture.width = -1;
  }

  assertNotNull(fontTileset, "Font tileset cannot be NULL.");
  
  UI.fontTileset = fontTileset;
  errorChain(assetLoad(UI.fontTileset->image, &UI.fontTexture));
  errorOk();
}

void uiDispose(void) {
  if(UI.fontTexture.width > 0) {
    textureDispose(&UI.fontTexture);
    UI.fontTexture.width = -1;
  }
}