_Mines = {};
APP_Mines.step = 1;
// $('.challenge.minen').css('padding-top', $('.produktinfos.first').height()+30);
$('.produktinfos.first').css('position', 'absolute');

// static values
var playFieldSize = 5; // it's always square
var mineNumber = 4;
var site = 'hz';

function initPlayField(playFieldSize, mineNumber) {
  var playField = {};
  for (var i = 0; i < playFieldSize; i++) {
    var column = {};
    for (var j = 0; j < playFieldSize; j++) {
      column[j] = 0;
    }
    playField[i] = column;
  }

  for (var i = 0; i < mineNumber; i++) {
    do {
      var mineX = parseInt(Math.random()*playFieldSize);
      var mineY = parseInt(Math.random()*playFieldSize);
    } while (playField[mineX][mineY] >= 9);  // repeat until we hit a coordinate which doesn't already contain a bomb

    playField[mineX][mineY] = 9;
    // increment neighbour cards:

    //  row above
    if(mineY > 0) {
      if (mineX > 0) playField[mineX-1][mineY-1]++;
      playField[mineX][mineY-1]++;
      if (mineX < playFieldSize-1) playField[mineX+1][mineY-1]++;
    }

    // same row
    if (mineX > 0) playField[mineX-1][mineY]++;
    if (mineX < playFieldSize-1) playField[mineX+1][mineY]++;

    // row below
    if (mineY < playFieldSize-1) {
      if (mineX > 0) playField[mineX-1][mineY+1]++;
      playField[mineX][mineY+1]++;
      if (mineX < playFieldSize-1) playField[mineX+1][mineY+1]++;
    }
  }
  // now every card containing a value >= 9 indicates a bomb

  return playField;
}

function exposeCards($cards, playField) {
  $cards.each(function(){
    var x = this.name.match(/x(\d?)/)[1];
    var y = this.name.match(/y(\d?)/)[1];
    var imgName = playField[x][y]>0 ? playField[x][y] : 'leer';
    if (parseInt(imgName) >= 9) imgName = 'bombe';
    $(this).replaceWith('<img src="http://games.hoerzu.de/games/app/gamesimages/hz/'+imgName+'.gif" />');
  });
}

function renderPlayField(playField) {
  //var playFieldSize = playField.length*playField.length; // square assumed
  var i = 0;
  var x, y;
  $('.spielfeld td').each(function(){
    x = i%playFieldSize;
    y = parseInt(i/playFieldSize);
    $(this).html('<input type="submit" name="x'+x+'y'+y+'" value="?">');
    i++;
  });
}

function cycleInfoPages() {
  var $infoPages = $('.minen-container > .produktinfos');
  $($infoPages[APP_Mines.step-1]).hide();
  APP_Mines.step++;
  if (APP_Mines.step > $infoPages.length) APP_Mines.step = 1;
  $($infoPages[APP_Mines.step-1]).hide().css('visibility', 'visible');
  $($infoPages[APP_Mines.step-1]).show();

  APP_Mines.clickcounter++;
  if(!(APP_Mines.clickcounter%APP_Mines.refreshfreq)) {
    try { reloadAds('minen'); }
    catch(err) {}
  }
}

function startGame() {
  var playField = initPlayField(playFieldSize, mineNumber);
  $('.meldung').hide();
  renderPlayField(playField);

  $('.spielfeld input').unbind().click(function(){
    try { tvdTrack(window.location.href); }
    catch(err) {}

    var x = this.name.match(/x(\d?)/)[1];
    var y = this.name.match(/y(\d?)/)[1];

    if (playField[x][y] < 9) { // no bomb
      if($('.spielfeld input').length == mineNumber+1) { // all bombless cards exposed already?
        // congratulations, but there is no cake
        exposeCards($('.spielfeld input'), playField);

        var finishTime = new Date();
        var durationSeconds = parseInt((finishTime-APP_Mines.startTime)/1000);
        $('.meldung.won .spieldauer span').text(durationSeconds);
        $('.meldung.won').fadeIn();
        won = true;
      } else {
        cycleInfoPages();
        exposeCards($(this), playField);
      }
    } else {
      // somebody set up us the bomb
      cycleInfoPages();
      exposeCards($('.spielfeld input'), playField);
      $('.meldung.gameover').fadeIn();
    }
  });
}

// main
$('.meldung.gameover input').click(function(){
  cycleInfoPages();
  startGame();
});

APP_Mines.startTime = new Date();
APP_Mines.clickcounter = 0;
APP_Mines.refreshfreq = 2; // refresh ads every nth click
startGame();
});