<?php
//
// FAPWeb - Simple Web-based Demoparty Management System
// Party information display system AJAX backend module
// (C) Copyright 2012-2017 Tecnic Software productions (TNSP)
//
require_once "mconfig.inc.php";
require_once "msite.inc.php";


function stPrintCompoEntry($entry, $class, $compo, $title = FALSE)
{
  echo
  "  <div class=\"".$class."\">\n";

  if ($title !== FALSE)
  echo
  "    <div class=\"entryTitle\">".$title."</div>\n";

  echo
  "    <div class=\"entryIndex\">#".$entry["show_id"]."</div>\n".
  "    <div class=\"entryName\">".chentities($entry["name"])."</div>\n";

  if ($compo["show_authors"])
  {
    if ($title === FALSE)
    echo "    <div class=\"entryBy\">by</div>\n";
    echo "    <div class=\"entryAuthor\">".chentities($entry["author"])."</div>\n";
  }

  if ($title === FALSE)
    echo "    <div class=\"entryInfo\">".stConvertCommonDesc($entry["info"], TRUE)."</div>\n";

  echo
  "  </div>\n";
}


function stPrintCompoSlide($compo, $entry, $prev)
{
  echo
  "  <div class=\"compoHeader\">\n".
  "    <div class=\"compoHeaderDiv\"></div>\n".
  "    <div class=\"compoTitle\">".chentities($compo["name"])." competition</div>\n".
  "  </div>\n";

  if ($entry === FALSE && $prev === FALSE)
    echo "<div class=\"compoStarting\">... Is about to start ...</div>";

  if ($entry !== FALSE)
    stPrintCompoEntry($entry, "compoNext", $compo, FALSE);

  if ($prev !== FALSE)
    stPrintCompoEntry($prev, "compoPrev", $compo, "Previous entry");
}


function stPrintRotationSlide($data)
{
  echo
  "  <div class=\"slideHeader\">\n".
  "    <div class=\"slideHeaderDiv\"></div>\n".
  "  </div>\n".
  "  <div class=\"slideText\">\n".
  $data.
  "  </div>\n";
}


function stGuruMeditation()
{
  stPrintRotationSlide(
    "<div class=\"guru\">".
    "Software Failure.&nbsp;&nbsp;&nbsp;Press left mouse button to continue.<br />".
    "Guru Meditation #00000004.0000AAC0".
    "</div>\n");
}


//
// Initialize
//
stSetupCacheControl();

if (!stConnectSQLDB())
  die("Could not connect to SQL database.");

stReloadDisplayVars();


//
// Check if the slide needs updating?
//
$updated = FALSE;

// Temporary slides are handled globally
if (stGetDisplayVar("tempDuration") > 0 &&
    stGetDisplayVar("tempSlide") > 0 &&
    stGetDisplayVar("tempSlideSet"))
{
  $sql = stPrepareSQL("SELECT * FROM display_slides WHERE id=%d",
    stGetDisplayVar("tempSlide"));

  if (($res = stFetchSQL($sql)) !== FALSE)
  {
    stSetDisplayVar("tempSlideSet", FALSE);
    stSetDisplayVar("activeSlideMode", SMODE_ROTATE);
    stSetDisplayVar("activeSlide", stGetDisplayVar("tempSlide"));
    stSetDisplayVar("activeSlideExpire", time() + (stGetDisplayVar("tempDuration") * 60));
    $updated = TRUE;
  }
}
else
// Otherwise we act according to global show mode
switch (stGetDisplayVar("showMode"))
{
  case SMODE_ROTATE:
    //
    // Rotation / normal slide show mode
    //
    stSetDisplayVar("activeSlideMode", SMODE_ROTATE);

    if (stGetDisplayVar("rotateList") == 0)
    {
      stSetDisplayVar("rotateList", 1);
      stSetDisplayVar("activeSlideExpire", 0);
      $updated = TRUE;
    }

    if (time() >= stGetDisplayVar("activeSlideExpire") &&
        stGetDisplayVar("rotateList") > 0)
    {
      // Get list of slides from active rotation list
      $list = stGetDisplayVar("rotateList");
      $sql = stPrepareSQL(
        "SELECT * FROM rot_list_slides WHERE list_id=%d ORDER BY order_num,id",
        $list);

      if (($slideList = stExecSQL($sql)) !== FALSE)
      {
        // Get slide at current index
        $slides = array();
        foreach ($slideList as $slide)
          $slides[] = $slide;

        $index = stGetDisplayVar("rotateListIndex");
        if (count($slides) > $index)
        {
          $slide_id = $slides[$index]["slide_id"];
          if ($slide_id != stGetDisplayVar("activeSlide"))
          {
            stSetDisplayVar("activeSlide", $slide_id);
            stSetDisplayVar("activeSlideExpire", time() + stGetDisplayVar("rotateDuration"));
            $updated = TRUE;
          }
        }

        // Rotate to next slide
        if (++$index >= count($slides))
          $index = 0;

        stSetDisplayVar("rotateListIndex", $index);
      }
    }
    break;

  case SMODE_COMPO:
    //
    // Competition mode, is controlled from admin UI, so we donẗ
    // actually do anything here.
    //
    if (time() >= stGetDisplayVar("activeSlideExpire"))
    {
      stSetDisplayVar("activeSlideMode", SMODE_COMPO);
      $updated = TRUE;
    }
    break;

  case SMODE_DISABLED:
    if (stGetDisplayVar("activeSlideMode") != SMODE_DISABLED)
    {
      stSetDisplayVar("activeSlideMode", SMODE_DISABLED);
      $updated = TRUE;
    }
    break;
}

// Check if we need to update the "last updated" timestamp
if ($updated)
  stDisplayUpdated();


//
// Serve the request
//
$type = stGetRequestItem("type");
switch (stGetRequestItem("action"))
{
  case "check":
    // Check if there has been any change
    $changed = stGetRequestItem("lastUpdate") != stGetDisplayVar("lastUpdate");
    if (stGetDisplayVar("screenCmdSet"))
    {
      echo stGetDisplayVar("screenCmd");
      stSetDisplayVar("screenCmdSet", FALSE);
    }
    else
      echo $changed ? "changed" : "nochange";
    break;

  case "get":
    switch ($type)
    {
      case "update":
        echo stGetDisplayVar("lastUpdate");
        break;

      case "slide":
        // Based on the currently active mode ...
        switch (stGetDisplayVar("activeSlideMode"))
        {
          case SMODE_ROTATE:
            // Slide rotation mode, display currently active slide
            if (stGetDisplayVar("activeSlide") > 0)
            {
              $sql = stPrepareSQL("SELECT * FROM display_slides WHERE id=%d",
                stGetDisplayVar("activeSlide"));

              if (($slide = stFetchSQL($sql)) !== FALSE)
                stPrintRotationSlide($slide["text"]);
            }
            else
              stGuruMeditation();
            break;

          case SMODE_COMPO:
            // Competition mode, show entry data
            $compo_id = stGetDisplayVar("compoID");
            $compo = stFetchSQL(stPrepareSQL(
              "SELECT * FROM compos WHERE id=%d",
              $compo_id));

            if ($compo !== FALSE)
            {
              $prev = stFetchSQL(stPrepareSQL(
                "SELECT * FROM entries WHERE compo_id=%d AND show_id=%d AND show_id<>0",
                $compo_id, stGetDisplayVar("compoPrevEntry")));

              $entry = stFetchSQL(stPrepareSQL(
                "SELECT * FROM entries WHERE compo_id=%d AND show_id=%d AND show_id<>0",
                $compo_id, stGetDisplayVar("compoCurrEntry")));

              stPrintCompoSlide($compo, $entry, $prev);
            }
            break;

          default:
            stGuruMeditation();
            break;
        }
        break;

      default:
        stGuruMeditation();
        break;
    }
    break;

  default:
    stGuruMeditation();
    break;
}


// Save changed variables
stSaveDisplayVars();

//stDumpAJAXStatusErrors();
?>