<?php
use Kirby\Cms\Page;

// more validation is needed
function addThrows($page, $site, $kirby){
  $json["status"] = "ok";
  $error = "";
  if (!$page->enddate()->isEmpty()) {
    $error = "Game ended";
    $json["status"] = "error";
    $json["error"] = $error;
    return $json;
  }
  $throws = $kirby->request()->get("throws");
  if (is_null($throws) || !is_array($throws)) {
    $error = "You have to pass throws as array";
    if ($error != "") {
      $json["status"] = "error";
      $json["error"] = $error;
    }
    return $json;
  }
  $checkoutTries = $kirby->request()->get("checkoutTries") ? intval($kirby->request()->get("checkoutTries")) : 0;
  $done = $kirby->request()->get("done");
  $numDarts = 3;
  if ($kirby->request()->get("numDarts")) {
    $numDarts = intval($kirby->request()->get("numDarts"));
  } elseif (!$done) {
    $numDarts = count($throws);
  }
  try {
    $page->addThrows($throws, $numDarts, $checkoutTries, $done);
  } catch (\Exception $e) {
    $error = $e->getMessage();
  }
  if ($error != "") {
    $json["status"] = "error";
    $json["error"] = $error;
  }
  return $json;
}

function deleteLastThrow($page, $site, $kirby){
  $json["status"] = "ok";
  $error = "";
  if (!$page->enddate()->isEmpty()) {
    $error = "Game ended";
    $json["status"] = "error";
    $json["error"] = $error;
    return $json;
  }
  $game = $page->rounds()->parseJSON();
  $set = &$game["sets"][count($game["sets"])-1];
  $leg = &$set["legs"][count($set["legs"])-1];
  $visit = &$leg["visits"][count($leg["visits"])-1];

  $completeVisit = $kirby->request()->get("visit");
  if (count($visit['throws']) > 0 && !$completeVisit) {
    array_pop($visit['throws']);
    $kirby->impersonate('kirby');
    $page = $page->update([
      'rounds' => json_encode($game),
    ]);
  } else {
    // delete last visit. This means, delete 2 lasts and insert one.
    array_pop($leg["visits"]);
    if (count($leg["visits"]) == 0){
      array_pop($set["legs"]);
      if (count($set["legs"]) == 0){
        array_pop($game["sets"]);
        if (count($game["sets"]) == 0){
          $page = $page->initGame(false);
          $page->recalcStats();
          return $json;
        }
      }
    }
    $kirby->impersonate('kirby');
    $page = $page->update([
      'rounds' => json_encode($game),
    ]);
    $page = $page->clearLastVisit();
  }
  $page = $page->recalcStats();
  if ($error != "") {
    $json["status"] = "error";
    $json["error"] = $error;
  }
  return $json;
}

function init($page, $site, $kirby){
  $json["status"] = "ok";
  $error = "";
  if ($page->rounds()->toString() != "") {
    $error = "Game already started, can not update";
    $json["status"] = "error";
    $json["error"] = $error;
    return $json;
  }
  $players = $kirby->request()->get("players");
  if (is_null($players) || !is_array($players) || count($players) == 0)  {
    $error = "Players not given.";
    $json["status"] = "error";
    $json["error"] = $error;
    return $json;
  }
  foreach ($players as $i => $player) {
    try {
      if (page($player)->intendedTemplate() != "member") {
        $error = "Player is not a member ".page($player)->template();
        $json["status"] = "error";
        $json["error"] = $error;
        return $json;
      }
    } catch (\Exception $e) {
      $error = "Player not found".$e;
      $json["status"] = "error";
      $json["error"] = $error;
      return $json;
    }
  }
  $page = $page->reorderPlayer($players);
  $page->initGame();

  if ($error != "") {
    $json["status"] = "error";
    $json["error"] = $error;
  }
  return $json;
}

function update($page, $site, $kirby){
  $json["status"] = "ok";
  $error = "";

  // TODO check data for valid fields
  $kirby->impersonate('kirby');
  $data = $kirby->request()->get("data");
  $page = $page->update($data);

  if ($error != "") {
    $json["status"] = "error";
    $json["error"] = $error;
  }
  return $json;
}

return function ($page, $site, $kirby) {
  $error = "";
  $json = [];
  $type = "html";
  if ($kirby->request()->is('POST')) {
    $type = "json";
    $action = $kirby->request()->get("action");
    if ($action == "update") {
      $json = update($page, $site, $kirby);
    } elseif ($action == "init") {
      $json = init($page, $site, $kirby);
    } elseif ($action == "addThrows") {
      $json = addThrows($page, $site, $kirby);
    } elseif ($action == "deleteLastThrow") {
      $json = deleteLastThrow($page, $site, $kirby);
    } else {
      $json["error"] = "No known action defined";
      $json["status"] = "error";
    }
  }

  return [
    'type' => $type,
    'json' => $json,
    'error' => $error
  ];
};