<?php
/*
 +--------------------------------------------------------------------+
 | Copyright CiviCRM LLC. All rights reserved.                        |
 |                                                                    |
 | This work is published under the GNU AGPLv3 license with some      |
 | permitted exceptions and without any warranty. For full license    |
 | and copyright information, see https://civicrm.org/licensing       |
 +--------------------------------------------------------------------+
 */

/**
 *
 * @package CRM
 * @copyright CiviCRM LLC https://civicrm.org/licensing
 */
class CRM_Report_Form_Contribute_Bookkeeping extends CRM_Report_Form {

  protected $_summary = NULL;

  protected $_customGroupExtends = [
    'Contact',
    'Individual',
    'Contribution',
    'Membership',
  ];

  /**
   * This report has not been optimised for group filtering.
   *
   * The functionality for group filtering has been improved but not
   * all reports have been adjusted to take care of it. This report has not
   * and will run an inefficient query until fixed.
   *
   * @var bool
   * @see https://issues.civicrm.org/jira/browse/CRM-19170
   */
  protected $groupFilterNotOptimised = TRUE;

  /**
   * Class constructor.
   */
  public function __construct() {
    $this->_autoIncludeIndexedFieldsAsOrderBys = 1;
    $this->_columns = array_merge(
      $this->getColumns('Contact', [
        'order_bys_defaults' => ['sort_name' => 'ASC '],
        'fields_defaults' => ['sort_name'],
        'fields_excluded' => ['id'],
        'fields_required' => ['id'],
        'filters_defaults' => ['is_deleted' => 0],
        'no_field_disambiguation' => TRUE,
      ]),
      [
        'civicrm_membership' => [
          'dao' => 'CRM_Member_DAO_Membership',
          'fields' => [
            'id' => [
              'title' => ts('Membership #'),
              'no_display' => TRUE,
              'required' => TRUE,
            ],
          ],
        ],
        'civicrm_financial_account' => [
          'dao' => 'CRM_Financial_DAO_FinancialAccount',
          'fields' => [
            'debit_accounting_code' => [
              'title' => ts('Financial Account Code - Debit'),
              'name' => 'accounting_code',
              'alias' => 'financial_account_civireport_debit',
              'default' => TRUE,
            ],
            'debit_contact_id' => [
              'title' => ts('Financial Account Owner - Debit'),
              'name' => 'organization_name',
              'alias' => 'debit_contact',
            ],
            'credit_accounting_code' => [
              'title' => ts('Financial Account Code - Credit'),
              'name' => 'accounting_code',
              'alias' => 'financial_account_civireport_credit',
              'default' => TRUE,
            ],
            'credit_contact_id' => [
              'title' => ts('Financial Account Owner - Credit'),
              'name' => 'organization_name',
              'alias' => 'credit_contact',
            ],
            'debit_name' => [
              'title' => ts('Financial Account Name - Debit'),
              'name' => 'name',
              'alias' => 'financial_account_civireport_debit',
              'default' => TRUE,
            ],
            'credit_name' => [
              'title' => ts('Financial Account Name - Credit'),
              'name' => 'name',
              'alias' => 'financial_account_civireport_credit',
              'default' => TRUE,
            ],
          ],
          'filters' => [
            'debit_accounting_code' => [
              'title' => ts('Financial Account Code - Debit'),
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Contribute_PseudoConstant::financialAccount(NULL, NULL, 'accounting_code', 'accounting_code'),
              'name' => 'accounting_code',
              'alias' => 'financial_account_civireport_debit',
            ],
            'debit_contact_id' => [
              'title' => ts('Financial Account Owner - Debit'),
              'operatorType' => CRM_Report_Form::OP_SELECT,
              'type' => CRM_Utils_Type::T_INT,
              'options' => ['' => ts('- Select Organization -')] + CRM_Financial_BAO_FinancialAccount::getOrganizationNames(FALSE),
              'name' => 'contact_id',
              'alias' => 'financial_account_civireport_debit',
            ],
            'credit_accounting_code' => [
              'title' => ts('Financial Account Code - Credit'),
              'type' => CRM_Utils_Type::T_INT,
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Contribute_PseudoConstant::financialAccount(NULL, NULL, 'accounting_code', 'accounting_code'),
              'name' => 'accounting_code',
              'alias' => 'financial_account_civireport_credit',
            ],
            'credit_contact_id' => [
              'title' => ts('Financial Account Owner - Credit'),
              'operatorType' => CRM_Report_Form::OP_SELECT,
              'type' => CRM_Utils_Type::T_INT,
              'options' => ['' => ts('- Select Organization -')] + CRM_Financial_BAO_FinancialAccount::getOrganizationNames(FALSE),
              'name' => 'contact_id',
              'alias' => 'financial_account_civireport_credit',
            ],
            'debit_name' => [
              'title' => ts('Financial Account Name - Debit'),
              'type' => CRM_Utils_Type::T_STRING,
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Contribute_PseudoConstant::financialAccount(),
              'name' => 'id',
              'alias' => 'financial_account_civireport_debit',
            ],
            'credit_name' => [
              'title' => ts('Financial Account Name - Credit'),
              'type' => CRM_Utils_Type::T_STRING,
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Contribute_PseudoConstant::financialAccount(),
              'name' => 'id',
              'alias' => 'financial_account_civireport_credit',
            ],
          ],
        ],
        'civicrm_line_item' => [
          'dao' => 'CRM_Price_DAO_LineItem',
          'fields' => [
            'financial_type_id' => [
              'title' => ts('Financial Type'),
              'default' => TRUE,
            ],
          ],
          'filters' => [
            'financial_type_id' => [
              'title' => ts('Financial Type'),
              'type' => CRM_Utils_Type::T_INT,
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Contribute_BAO_Contribution::buildOptions('financial_type_id', 'search'),
            ],
          ],
          'order_bys' => [
            'financial_type_id' => ['title' => ts('Financial Type')],
          ],
        ],
        'civicrm_batch' => [
          'dao' => 'CRM_Batch_DAO_Batch',
          'fields' => [
            'title' => [
              'title' => ts('Batch Title'),
              'alias' => 'batch',
              'default' => FALSE,
            ],
            'name' => [
              'title' => ts('Batch Name'),
              'alias' => 'batch',
              'default' => TRUE,
            ],
          ],
        ],
        'civicrm_contribution' => [
          'dao' => 'CRM_Contribute_DAO_Contribution',
          'fields' => [
            'receive_date' => [
              'default' => TRUE,
            ],
            'invoice_id' => [
              'title' => ts('Invoice Reference'),
              'default' => TRUE,
            ],
            'invoice_number' => [
              'title' => ts('Invoice Number'),
            ],
            'contribution_status_id' => [
              'title' => ts('Contribution Status'),
              'default' => TRUE,
            ],
            'contribution_source' => [
              'title' => ts('Source'),
              'name' => 'source',
            ],
            'id' => [
              'title' => ts('Contribution ID'),
              'default' => TRUE,
            ],
          ],
          'filters' => [
            'contribution_id' => [
              'title' => ts('Contribution ID'),
              'name' => 'id',
              'operatorType' => CRM_Report_Form::OP_INT,
              'type' => CRM_Utils_Type::T_INT,
            ],
            'receive_date' => ['operatorType' => CRM_Report_Form::OP_DATETIME],
            'receipt_date' => ['operatorType' => CRM_Report_Form::OP_DATETIME],
            'contribution_source' => [
              'title' => ts('Source'),
              'name' => 'source',
              'type' => CRM_Utils_Type::T_STRING,
            ],
            'contribution_status_id' => [
              'title' => ts('Contribution Status'),
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Contribute_BAO_Contribution::buildOptions('contribution_status_id', 'search'),
              'default' => [1],
            ],
          ],
          'order_bys' => [
            'contribution_id' => ['title' => ts('Contribution #')],
            'contribution_status_id' => ['title' => ts('Contribution Status')],
            'receive_date'  => ['title' => ts('Date Received')],
          ],
          'grouping' => 'contri-fields',
        ],
        'civicrm_financial_trxn' => [
          'dao' => 'CRM_Financial_DAO_FinancialTrxn',
          'fields' => [
            'check_number' => [
              'title' => ts('Cheque #'),
              'default' => TRUE,
            ],
            'payment_instrument_id' => [
              'title' => ts('Payment Method'),
              'default' => TRUE,
            ],
            'currency' => [
              'required' => TRUE,
              'no_display' => TRUE,
            ],
            'trxn_date' => [
              'title' => ts('Transaction Date'),
              'default' => TRUE,
              'type' => CRM_Utils_Type::T_DATE + CRM_Utils_Type::T_TIME,
            ],
            'trxn_id' => [
              'title' => ts('Trans #'),
              'default' => TRUE,
            ],
            'card_type_id' => [
              'title' => ts('Credit Card Type'),
            ],
          ],
          'filters' => [
            'payment_instrument_id' => [
              'title' => ts('Payment Method'),
              'type' => CRM_Utils_Type::T_INT,
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Contribute_PseudoConstant::paymentInstrument(),
            ],
            'currency' => [
              'title' => ts('Currency'),
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Core_OptionGroup::values('currencies_enabled'),
              'default' => NULL,
              'type' => CRM_Utils_Type::T_STRING,
            ],
            'trxn_date' => [
              'title' => ts('Transaction Date'),
              'operatorType' => CRM_Report_Form::OP_DATETIME,
              'type' => CRM_Utils_Type::T_DATE + CRM_Utils_Type::T_TIME,
            ],
            'status_id' => [
              'title' => ts('Financial Transaction Status'),
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Contribute_BAO_Contribution::buildOptions('contribution_status_id', 'search'),
              'default' => [1],
            ],
            'card_type_id' => [
              'title' => ts('Credit Card Type'),
              'operatorType' => CRM_Report_Form::OP_MULTISELECT,
              'options' => CRM_Financial_DAO_FinancialTrxn::buildOptions('card_type_id'),
              'default' => NULL,
              'type' => CRM_Utils_Type::T_STRING,
            ],
          ],
          'order_bys' => [
            'payment_instrument_id' => ['title' => ts('Payment Method')],
            'trxn_date' => ['title' => ts('Transaction Date')],
          ],
        ],
        'civicrm_entity_financial_trxn' => [
          'dao' => 'CRM_Financial_DAO_EntityFinancialTrxn',
          'fields' => [
            'amount' => [
              'title' => ts('Amount'),
              'default' => TRUE,
              'type' => CRM_Utils_Type::T_STRING,
            ],
          ],
          'filters' => [
            'amount' => ['title' => ts('Amount')],
          ],
        ],
      ]
    );

    $this->_groupFilter = TRUE;
    $this->_tagFilter = TRUE;
    parent::__construct();
  }

  public function preProcess() {
    parent::preProcess();
  }

  public function select() {
    $select = [];

    $this->_columnHeaders = [];
    foreach ($this->_columns as $tableName => $table) {
      if (array_key_exists('fields', $table)) {
        foreach ($table['fields'] as $fieldName => $field) {
          if (!empty($field['required']) ||
            !empty($this->_params['fields'][$fieldName])
          ) {
            switch ($fieldName) {
              case 'credit_accounting_code':
              case 'credit_name':
                $select[] = " CASE
                            WHEN {$this->_aliases['civicrm_financial_trxn']}.from_financial_account_id IS NOT NULL
                            THEN  {$this->_aliases['civicrm_financial_account']}_credit_1.{$field['name']}
                            ELSE  {$this->_aliases['civicrm_financial_account']}_credit_2.{$field['name']}
                            END AS civicrm_financial_account_{$fieldName} ";
                break;

              case 'amount':
                $select[] = " CASE
                            WHEN  {$this->_aliases['civicrm_entity_financial_trxn']}_item.entity_id IS NOT NULL
                            THEN {$this->_aliases['civicrm_entity_financial_trxn']}_item.amount
                            ELSE {$this->_aliases['civicrm_entity_financial_trxn']}.amount
                            END AS civicrm_entity_financial_trxn_amount ";
                break;

              case 'credit_contact_id':
                $select[] = " CASE
                            WHEN {$this->_aliases['civicrm_financial_trxn']}.from_financial_account_id IS NOT NULL
                            THEN  credit_contact_1.{$field['name']}
                            ELSE  credit_contact_2.{$field['name']}
                            END AS civicrm_financial_account_{$fieldName} ";
                break;

              default:
                $select[] = "{$field['dbAlias']} as {$tableName}_{$fieldName}";
                break;
            }
            $this->_columnHeaders["{$tableName}_{$fieldName}"]['title'] = $field['title'];
            $this->_columnHeaders["{$tableName}_{$fieldName}"]['type'] = $field['type'] ?? NULL;
          }
        }
      }
    }
    $this->_selectClauses = $select;

    $this->_select = 'SELECT ' . implode(', ', $select) . ' ';
  }

  public function from() {
    $this->_from = NULL;

    $this->_from = "FROM  civicrm_contact {$this->_aliases['civicrm_contact']} {$this->_aclFrom}
              INNER JOIN civicrm_contribution {$this->_aliases['civicrm_contribution']}
                    ON {$this->_aliases['civicrm_contact']}.id = {$this->_aliases['civicrm_contribution']}.contact_id AND
                         {$this->_aliases['civicrm_contribution']}.is_test = 0 AND
                         {$this->_aliases['civicrm_contribution']}.is_template = 0
              LEFT JOIN civicrm_membership_payment payment
                    ON ( {$this->_aliases['civicrm_contribution']}.id = payment.contribution_id )
              LEFT JOIN civicrm_membership {$this->_aliases['civicrm_membership']}
                    ON payment.membership_id = {$this->_aliases['civicrm_membership']}.id
              LEFT JOIN civicrm_entity_financial_trxn {$this->_aliases['civicrm_entity_financial_trxn']}
                    ON ({$this->_aliases['civicrm_contribution']}.id = {$this->_aliases['civicrm_entity_financial_trxn']}.entity_id AND
                        {$this->_aliases['civicrm_entity_financial_trxn']}.entity_table = 'civicrm_contribution')
              LEFT JOIN civicrm_financial_trxn {$this->_aliases['civicrm_financial_trxn']}
                    ON {$this->_aliases['civicrm_financial_trxn']}.id = {$this->_aliases['civicrm_entity_financial_trxn']}.financial_trxn_id
              LEFT JOIN civicrm_financial_account {$this->_aliases['civicrm_financial_account']}_debit
                    ON {$this->_aliases['civicrm_financial_trxn']}.to_financial_account_id = {$this->_aliases['civicrm_financial_account']}_debit.id
              LEFT JOIN civicrm_contact debit_contact ON {$this->_aliases['civicrm_financial_account']}_debit.contact_id = debit_contact.id
              LEFT JOIN civicrm_financial_account {$this->_aliases['civicrm_financial_account']}_credit_1
                    ON {$this->_aliases['civicrm_financial_trxn']}.from_financial_account_id = {$this->_aliases['civicrm_financial_account']}_credit_1.id
              LEFT JOIN civicrm_contact credit_contact_1 ON {$this->_aliases['civicrm_financial_account']}_credit_1.contact_id = credit_contact_1.id
              LEFT JOIN civicrm_entity_financial_trxn {$this->_aliases['civicrm_entity_financial_trxn']}_item
                    ON ({$this->_aliases['civicrm_financial_trxn']}.id = {$this->_aliases['civicrm_entity_financial_trxn']}_item.financial_trxn_id AND
                        {$this->_aliases['civicrm_entity_financial_trxn']}_item.entity_table = 'civicrm_financial_item')
              LEFT JOIN civicrm_financial_item fitem
                    ON fitem.id = {$this->_aliases['civicrm_entity_financial_trxn']}_item.entity_id
              LEFT JOIN civicrm_financial_account {$this->_aliases['civicrm_financial_account']}_credit_2
                    ON fitem.financial_account_id = {$this->_aliases['civicrm_financial_account']}_credit_2.id
              LEFT JOIN civicrm_contact credit_contact_2 ON {$this->_aliases['civicrm_financial_account']}_credit_2.contact_id = credit_contact_2.id
              LEFT JOIN civicrm_line_item {$this->_aliases['civicrm_line_item']}
                    ON  fitem.entity_id = {$this->_aliases['civicrm_line_item']}.id AND fitem.entity_table = 'civicrm_line_item'
              ";

    if ($this->isTableSelected('civicrm_batch')) {
      $this->_from .= "LEFT JOIN civicrm_entity_batch ent_batch
                    ON  {$this->_aliases['civicrm_financial_trxn']}.id = ent_batch.entity_id AND ent_batch.entity_table = 'civicrm_financial_trxn'
              LEFT JOIN civicrm_batch batch
                    ON  ent_batch.batch_id = batch.id";
    }
  }

  public function orderBy() {
    parent::orderBy();

    // please note this will just add the order-by columns to select query, and not display in column-headers.
    // This is a solution to not throw fatal errors when there is a column in order-by, not present in select/display columns.
    foreach ($this->_orderByFields as $orderBy) {
      if (!array_key_exists($orderBy['name'], $this->_params['fields']) &&
        empty($orderBy['section'])
      ) {
        $this->_select .= ", {$orderBy['dbAlias']} as {$orderBy['tplField']}";
      }
    }
  }

  /**
   * overriding to modify dbAlias for few fields.
   *
   * @param array $field Field specifications
   * @param string $op Query operator (not an exact match to sql)
   * @param mixed $value
   * @param float $min
   * @param float $max
   *
   * @return null|string
   */
  public function whereClause(&$field, $op, $value, $min, $max) {
    if ($field['alias'] == 'financial_account_civireport_credit' &&
      in_array($field['name'], ['accounting_code', 'id', 'contact_id'])
    ) {
      $field['dbAlias'] = "CASE
              WHEN financial_trxn_civireport.from_financial_account_id IS NOT NULL
              THEN  financial_account_civireport_credit_1.{$field['name']}
              ELSE  financial_account_civireport_credit_2.{$field['name']}
              END";
    }

    $clause = parent::whereClause($field, $op, $value, $min, $max);

    return $clause;
  }

  public function postProcess() {
    // get the acl clauses built before we assemble the query
    $this->buildACLClause($this->_aliases['civicrm_contact']);
    parent::postProcess();
  }

  public function groupBy() {
    $groupBy = [
      "{$this->_aliases['civicrm_entity_financial_trxn']}.id",
      "{$this->_aliases['civicrm_line_item']}.id",
    ];
    $this->_groupBy = CRM_Contact_BAO_Query::getGroupByFromSelectColumns($this->_selectClauses, $groupBy);
  }

  /**
   * @param array $rows
   *
   * @return array
   */
  public function statistics(&$rows) {
    $statistics = parent::statistics($rows);
    $financialSelect = "CASE WHEN {$this->_aliases['civicrm_entity_financial_trxn']}_item.entity_id IS NOT NULL
            THEN {$this->_aliases['civicrm_entity_financial_trxn']}_item.amount
            ELSE {$this->_aliases['civicrm_entity_financial_trxn']}.amount
            END as amount";

    $this->_selectClauses = [
      "{$this->_aliases['civicrm_contribution']}.id",
      "{$this->_aliases['civicrm_entity_financial_trxn']}.id as trxnID",
      "{$this->_aliases['civicrm_contribution']}.currency",
      $financialSelect,
    ];
    $select = "SELECT " . implode(', ', $this->_selectClauses);

    $this->groupBy();

    $tempTableName = $this->createTemporaryTable('tempTable', "
                  {$select} {$this->_from} {$this->_where} {$this->_groupBy} ");

    $sql = "SELECT COUNT(trxnID) as count, SUM(amount) as amount, currency
            FROM {$tempTableName}
            GROUP BY currency";
    $dao = CRM_Core_DAO::executeQuery($sql);
    $amount = $avg = [];
    while ($dao->fetch()) {
      $amount[] = CRM_Utils_Money::format($dao->amount, $dao->currency);
      $avg[] = CRM_Utils_Money::format(round(($dao->amount /
        $dao->count), 2), $dao->currency);
    }

    $statistics['counts']['amount'] = [
      'value' => implode(', ', $amount),
      'title' => ts('Total Amount'),
      'type' => CRM_Utils_Type::T_STRING,
    ];
    $statistics['counts']['avg'] = [
      'value' => implode(', ', $avg),
      'title' => ts('Average'),
      'type' => CRM_Utils_Type::T_STRING,
    ];
    return $statistics;
  }

  /**
   * Alter display of rows.
   *
   * Iterate through the rows retrieved via SQL and make changes for display purposes,
   * such as rendering contacts as links.
   *
   * @param array $rows
   *   Rows generated by SQL, with an array for each row.
   */
  public function alterDisplay(&$rows) {
    $contributionTypes = CRM_Contribute_PseudoConstant::financialType();
    $paymentInstruments = CRM_Contribute_PseudoConstant::paymentInstrument();
    $contributionStatus = CRM_Contribute_PseudoConstant::contributionStatus(NULL, 'label');
    $creditCardTypes = CRM_Financial_DAO_FinancialTrxn::buildOptions('card_type_id');
    foreach ($rows as $rowNum => $row) {
      $entryFound = FALSE;
      // convert display name to links
      if (array_key_exists('civicrm_contact_sort_name', $row) &&
        !empty($rows[$rowNum]['civicrm_contact_sort_name']) &&
        array_key_exists('civicrm_contact_id', $row)
      ) {
        $url = CRM_Utils_System::url('civicrm/contact/view',
          'reset=1&cid=' . $row['civicrm_contact_id'],
          $this->_absoluteUrl
        );
        $rows[$rowNum]['civicrm_contact_sort_name_link'] = $url;
        $rows[$rowNum]['civicrm_contact_sort_name_hover'] = ts('View Contact Summary for this Contact.');
      }

      // handle contribution status id
      if ($value = CRM_Utils_Array::value('civicrm_contribution_contribution_status_id', $row)) {
        $rows[$rowNum]['civicrm_contribution_contribution_status_id'] = $contributionStatus[$value];
      }

      // handle payment instrument id
      if ($value = CRM_Utils_Array::value('civicrm_financial_trxn_payment_instrument_id', $row)) {
        $rows[$rowNum]['civicrm_financial_trxn_payment_instrument_id'] = $paymentInstruments[$value];
      }

      // handle financial type id
      if ($value = CRM_Utils_Array::value('civicrm_line_item_financial_type_id', $row)) {
        $rows[$rowNum]['civicrm_line_item_financial_type_id'] = $contributionTypes[$value];
      }
      if ($value = CRM_Utils_Array::value('civicrm_entity_financial_trxn_amount', $row)) {
        $rows[$rowNum]['civicrm_entity_financial_trxn_amount'] = CRM_Utils_Money::format($rows[$rowNum]['civicrm_entity_financial_trxn_amount'], $rows[$rowNum]['civicrm_financial_trxn_currency']);
      }

      if (!empty($row['civicrm_financial_trxn_card_type_id'])) {
        $rows[$rowNum]['civicrm_financial_trxn_card_type_id'] = $creditCardTypes[$row['civicrm_financial_trxn_card_type_id']] ?? NULL;
        $entryFound = TRUE;
      }

      $entryFound = $this->alterDisplayContactFields($row, $rows, $rowNum, NULL, NULL) ? TRUE : $entryFound;

    }
  }

}