<?php

class CRM_Grant_BAO_GrantBudget extends CRM_Grant_DAO_GrantBudget {

  public static function getFiscalyear() {
    $from = date("Y", strtotime(date('Y') . ' - ' . GRANT_SCHOLARSHIP_YEAR_DIFF . ' years'));
    $to = date("Y", strtotime(date('Y') . ' + ' . GRANT_SCHOLARSHIP_YEAR_DIFF . ' years'));
    return array_combine(range($to, $from), range($to, $from));
  }

  public static function getGrantBudget($params) {
    $fiscalYear = $params['fiscal_year'];
    if (empty($fiscalYear)) {
      $fiscalYear = date('Y');
    }
    $grantBudget = [];
    $paidStatusID = CRM_Core_PseudoConstant::getKey(
      'CRM_Grant_DAO_Grant',
      'status_id',
      'Paid'
    );

    $config = CRM_Core_Config::singleton();
    $mkTime =  mktime(0, 0, 0, $config->fiscalYearStart['M'], $config->fiscalYearStart['d'], $fiscalYear);
    $fiscalStartDate = date('Y-m-d', $mkTime);
    $fiscalEndDate = date('Y-m-d', strtotime($startDate . '+ 1 year'));

    $qParams = [
      1 => [$fiscalYear, 'String'],
      2 => [$fiscalStartDate, 'String'],
      3 => [$fiscalEndDate, 'String'],
      4 => [$paidStatusID, 'Integer'],
    ];

    $where = '';
    if (!empty($params['financial_type_id'])) {
      $where = 'WHERE cft.id = %5';
      $qParams[5] = [$params['financial_type_id'], 'Integer'];
    }
    $grantBudgetTableName = CRM_Grant_DAO_GrantBudget::getTableName();
    $sql = "SELECT gs.id, cft.name, IFNULL(cgb.budget, 0) AS budget,
        SUM(IFNULL(cg.amount_granted, 0)) as total_amount_granted
      FROM civicrm_financial_type cft
        INNER JOIN " . GRANT_SCHOLARSHIP_CUSTOM_TABLE_NAME . " gs
          ON gs.entity_id = cft.id AND gs." . GRANT_SCHOLARSHIP_CUSTOM_FIELD . " = 1
        LEFT JOIN " . $grantBudgetTableName . " cgb
          ON cgb.financial_type_id = cft.id AND cgb.fiscal_year = %1
        LEFT JOIN civicrm_grant cg
          ON cg.financial_type_id = cft.id AND cg.status_id IN (%4)
          AND cg.decision_date >= %2 AND cg.decision_date < %3
      {$where}
      GROUP BY cft.id
      ORDER BY cft.name";
    $result = CRM_Core_DAO::executeQuery($sql, $qParams);

    while ($result->fetch()) {
      $grantBudget[$result->id] = [
        'id' => $result->id,
        'name' => $result->name,
        'budget' => CRM_Utils_Money::format($result->budget),
        'total_amount_granted' => CRM_Utils_Money::format($result->total_amount_granted),
        'balance_amount' => CRM_Utils_Money::format(($result->budget - $result->total_amount_granted)),
      ];
    }
    return $grantBudget;
  }

}