loanschedule.class.php

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<?php
/* Copyright (C) 2017       Florian HENRY           <florian.henry@atm-consulting.fr>
 * Copyright (C) 2018       Frédéric France         <frederic.france@netlogic.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

require_once DOL_DOCUMENT_ROOT.'/core/class/commonobject.class.php';


class LoanSchedule extends CommonObject
{
  public $element = 'loan_schedule';

  public $table_element = 'loan_schedule';

  public $fk_loan;

  public $datec;
  public $tms;

  public $datep;

  public $amounts = array(); // Array of amounts
  public $amount_capital; // Total amount of payment
  public $amount_insurance;
  public $amount_interest;

  public $fk_typepayment;

  public $num_payment;

  public $fk_bank;

  public $fk_payment_loan;

  public $fk_user_creat;

  public $fk_user_modif;

  public $lines = array();

  public $total;

  public $type_code;
  public $type_label;


  public function __construct($db)
  {
    $this->db = $db;
  }

  public function create($user)
  {
    global $conf, $langs;

    $error = 0;

    $now = dol_now();

    // Validate parameters
    if (!$this->datep)
    {
      $this->error = 'ErrorBadValueForParameter';
      return -1;
    }

    // Clean parameters
    if (isset($this->fk_loan)) $this->fk_loan = (int) $this->fk_loan;
    if (isset($this->amount_capital)) $this->amount_capital = trim($this->amount_capital ? $this->amount_capital : 0);
    if (isset($this->amount_insurance)) $this->amount_insurance = trim($this->amount_insurance ? $this->amount_insurance : 0);
    if (isset($this->amount_interest))  $this->amount_interest = trim($this->amount_interest ? $this->amount_interest : 0);
    if (isset($this->fk_typepayment)) $this->fk_typepayment = (int) $this->fk_typepayment;
    if (isset($this->fk_bank)) $this->fk_bank = (int) $this->fk_bank;
    if (isset($this->fk_user_creat)) $this->fk_user_creat = (int) $this->fk_user_creat;
    if (isset($this->fk_user_modif)) $this->fk_user_modif = (int) $this->fk_user_modif;

    $totalamount = $this->amount_capital + $this->amount_insurance + $this->amount_interest;
    $totalamount = price2num($totalamount);

    // Check parameters
    if ($totalamount == 0) {
      $this->errors[] = 'step1';
      return -1; // Negative amounts are accepted for reject prelevement but not null
    }


    $this->db->begin();

    if ($totalamount != 0)
    {
      $sql = "INSERT INTO ".MAIN_DB_PREFIX.$this->table_element." (fk_loan, datec, datep, amount_capital, amount_insurance, amount_interest,";
      $sql .= " fk_typepayment, fk_user_creat, fk_bank)";
      $sql .= " VALUES (".$this->fk_loan.", '".$this->db->idate($now)."',";
      $sql .= " '".$this->db->idate($this->datep)."',";
      $sql .= " ".$this->amount_capital.",";
      $sql .= " ".$this->amount_insurance.",";
      $sql .= " ".$this->amount_interest.",";
      $sql .= " ".$this->fk_typepayment.", ";
      $sql .= " ".$user->id.",";
      $sql .= " ".$this->fk_bank.")";

      dol_syslog(get_class($this)."::create", LOG_DEBUG);
      $resql = $this->db->query($sql);
      if ($resql)
      {
        $this->id = $this->db->last_insert_id(MAIN_DB_PREFIX."payment_loan");
      } else {
        $this->error = $this->db->lasterror();
        $error++;
      }
    }

    if ($totalamount != 0 && !$error)
    {
      $this->amount_capital = $totalamount;
      $this->db->commit();
      return $this->id;
    } else {
      $this->errors[] = $this->db->lasterror();
      $this->db->rollback();
      return -1;
    }
  }

  public function fetch($id)
  {
    global $langs;
    $sql = "SELECT";
    $sql .= " t.rowid,";
    $sql .= " t.fk_loan,";
    $sql .= " t.datec,";
    $sql .= " t.tms,";
    $sql .= " t.datep,";
    $sql .= " t.amount_capital,";
    $sql .= " t.amount_insurance,";
    $sql .= " t.amount_interest,";
    $sql .= " t.fk_typepayment,";
    $sql .= " t.num_payment,";
    $sql .= " t.note_private,";
    $sql .= " t.note_public,";
    $sql .= " t.fk_bank,";
    $sql .= " t.fk_payment_loan,";
    $sql .= " t.fk_user_creat,";
    $sql .= " t.fk_user_modif,";
    $sql .= " pt.code as type_code, pt.libelle as type_label,";
    $sql .= ' b.fk_account';
    $sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element." as t";
    $sql .= " LEFT JOIN ".MAIN_DB_PREFIX."c_paiement as pt ON t.fk_typepayment = pt.id";
    $sql .= ' LEFT JOIN '.MAIN_DB_PREFIX.'bank as b ON t.fk_bank = b.rowid';
    $sql .= " WHERE t.rowid = ".$id;

    dol_syslog(get_class($this)."::fetch", LOG_DEBUG);
    $resql = $this->db->query($sql);
    if ($resql) {
      if ($this->db->num_rows($resql)) {
        $obj = $this->db->fetch_object($resql);

        $this->id = $obj->rowid;
        $this->ref = $obj->rowid;

        $this->fk_loan = $obj->fk_loan;
        $this->datec = $this->db->jdate($obj->datec);
        $this->tms = $this->db->jdate($obj->tms);
        $this->datep = $this->db->jdate($obj->datep);
        $this->amount_capital = $obj->amount_capital;
        $this->amount_insurance = $obj->amount_insurance;
        $this->amount_interest = $obj->amount_interest;
        $this->fk_typepayment = $obj->fk_typepayment;
        $this->num_payment = $obj->num_payment;
        $this->note_private = $obj->note_private;
        $this->note_public = $obj->note_public;
        $this->fk_bank = $obj->fk_bank;
        $this->fk_payment_loan = $obj->fk_payment_loan;
        $this->fk_user_creat = $obj->fk_user_creat;
        $this->fk_user_modif = $obj->fk_user_modif;

        $this->type_code = $obj->type_code;
        $this->type_label = $obj->type_label;

        $this->bank_account = $obj->fk_account;
        $this->bank_line = $obj->fk_bank;
      }
      $this->db->free($resql);

      return 1;
    } else {
      $this->error = "Error ".$this->db->lasterror();
      return -1;
    }
  }


  public function update($user = 0, $notrigger = 0)
  {
    global $conf, $langs;
    $error = 0;

    // Clean parameters
    if (isset($this->amount_capital)) $this->amount_capital = trim($this->amount_capital);
    if (isset($this->amount_insurance)) $this->amount_insurance = trim($this->amount_insurance);
    if (isset($this->amount_interest)) $this->amount_interest = trim($this->amount_interest);
    if (isset($this->num_payment)) $this->num_payment = trim($this->num_payment);
    if (isset($this->note_private)) $this->note_private = trim($this->note_private);
    if (isset($this->note_public)) $this->note_public = trim($this->note_public);
    if (isset($this->fk_bank)) $this->fk_bank = trim($this->fk_bank);
    if (isset($this->fk_payment_loan)) $this->fk_payment_loan = (int) $this->fk_payment_loan;

    // Check parameters
    // Put here code to add control on parameters values

    // Update request
    $sql = "UPDATE ".MAIN_DB_PREFIX.$this->table_element." SET";

    $sql .= " fk_loan=".(isset($this->fk_loan) ? $this->fk_loan : "null").",";
    $sql .= " datec=".(dol_strlen($this->datec) != 0 ? "'".$this->db->idate($this->datec)."'" : 'null').",";
    $sql .= " tms=".(dol_strlen($this->tms) != 0 ? "'".$this->db->idate($this->tms)."'" : 'null').",";
    $sql .= " datep=".(dol_strlen($this->datep) != 0 ? "'".$this->db->idate($this->datep)."'" : 'null').",";
    $sql .= " amount_capital=".(isset($this->amount_capital) ? $this->amount_capital : "null").",";
    $sql .= " amount_insurance=".(isset($this->amount_insurance) ? $this->amount_insurance : "null").",";
    $sql .= " amount_interest=".(isset($this->amount_interest) ? $this->amount_interest : "null").",";
    $sql .= " fk_typepayment=".(isset($this->fk_typepayment) ? $this->fk_typepayment : "null").",";
    $sql .= " num_payment=".(isset($this->num_payment) ? "'".$this->db->escape($this->num_payment)."'" : "null").",";
    $sql .= " note_private=".(isset($this->note_private) ? "'".$this->db->escape($this->note_private)."'" : "null").",";
    $sql .= " note_public=".(isset($this->note_public) ? "'".$this->db->escape($this->note_public)."'" : "null").",";
    $sql .= " fk_bank=".(isset($this->fk_bank) ? $this->fk_bank : "null").",";
    $sql .= " fk_payment_loan=".(isset($this->fk_payment_loan) ? $this->fk_payment_loan : "null").",";
    $sql .= " fk_user_creat=".(isset($this->fk_user_creat) ? $this->fk_user_creat : "null").",";
    $sql .= " fk_user_modif=".(isset($this->fk_user_modif) ? $this->fk_user_modif : "null")."";

    $sql .= " WHERE rowid=".$this->id;

    $this->db->begin();

    dol_syslog(get_class($this)."::update", LOG_DEBUG);
    $resql = $this->db->query($sql);
    if (!$resql) { $error++; $this->errors[] = "Error ".$this->db->lasterror(); }

    // Commit or rollback
    if ($error)
    {
      $this->db->rollback();
      return -1 * $error;
    } else {
      $this->db->commit();
      return 1;
    }
  }


  public function delete($user, $notrigger = 0)
  {
    global $conf, $langs;
    $error = 0;

    $this->db->begin();

    if (!$error) {
      $sql = "DELETE FROM ".MAIN_DB_PREFIX.$this->table_element;
      $sql .= " WHERE rowid=".$this->id;

      dol_syslog(get_class($this)."::delete", LOG_DEBUG);
      $resql = $this->db->query($sql);
      if (!$resql) { $error++; $this->errors[] = "Error ".$this->db->lasterror(); }
    }

    // Commit or rollback
    if ($error)
    {
      foreach ($this->errors as $errmsg)
      {
        dol_syslog(get_class($this)."::delete ".$errmsg, LOG_ERR);
        $this->error .= ($this->error ? ', '.$errmsg : $errmsg);
      }
      $this->db->rollback();
      return -1 * $error;
    } else {
      $this->db->commit();
      return 1;
    }
  }

  public function calcMonthlyPayments($capital, $rate, $nbterm)
  {
    $result = '';

    if (!empty($capital) && !empty($rate) && !empty($nbterm)) {
      $result = ($capital * ($rate / 12)) / (1 - pow((1 + ($rate / 12)), ($nbterm * -1)));
    }

    return $result;
  }


  public function fetchAll($loanid)
  {
    global $langs;

    $sql = "SELECT";
    $sql .= " t.rowid,";
    $sql .= " t.fk_loan,";
    $sql .= " t.datec,";
    $sql .= " t.tms,";
    $sql .= " t.datep,";
    $sql .= " t.amount_capital,";
    $sql .= " t.amount_insurance,";
    $sql .= " t.amount_interest,";
    $sql .= " t.fk_typepayment,";
    $sql .= " t.num_payment,";
    $sql .= " t.note_private,";
    $sql .= " t.note_public,";
    $sql .= " t.fk_bank,";
    $sql .= " t.fk_payment_loan,";
    $sql .= " t.fk_user_creat,";
    $sql .= " t.fk_user_modif";
    $sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element." as t";
    $sql .= " WHERE t.fk_loan = ".$loanid;

    dol_syslog(get_class($this)."::fetchAll", LOG_DEBUG);
    $resql = $this->db->query($sql);

    if ($resql)
    {
      while ($obj = $this->db->fetch_object($resql))
      {
        $line = new LoanSchedule($this->db);
        $line->id = $obj->rowid;
        $line->ref = $obj->rowid;

        $line->fk_loan = $obj->fk_loan;
        $line->datec = $this->db->jdate($obj->datec);
        $line->tms = $this->db->jdate($obj->tms);
        $line->datep = $this->db->jdate($obj->datep);
        $line->amount_capital = $obj->amount_capital;
        $line->amount_insurance = $obj->amount_insurance;
        $line->amount_interest = $obj->amount_interest;
        $line->fk_typepayment = $obj->fk_typepayment;
        $line->num_payment = $obj->num_payment;
        $line->note_private = $obj->note_private;
        $line->note_public = $obj->note_public;
        $line->fk_bank = $obj->fk_bank;
        $line->fk_payment_loan = $obj->fk_payment_loan;
        $line->fk_user_creat = $obj->fk_user_creat;
        $line->fk_user_modif = $obj->fk_user_modif;

        $this->lines[] = $line;
      }
      $this->db->free($resql);
      return 1;
    } else {
      $this->error = "Error ".$this->db->lasterror();
      return -1;
    }
  }

  private function transPayment()
  {
    require_once DOL_DOCUMENT_ROOT.'/loan/class/loan.class.php';
    require_once DOL_DOCUMENT_ROOT.'/core/lib/loan.lib.php';
    require_once DOL_DOCUMENT_ROOT.'/core/lib/date.lib.php';

    $toinsert = array();

    $sql = "SELECT l.rowid";
    $sql .= " FROM ".MAIN_DB_PREFIX."loan as l ";
    $sql .= " WHERE l.paid = 0";
    $resql = $this->db->query($sql);

    if ($resql) {
      while ($obj = $this->db->fetch_object($resql)) {
        $lastrecorded = $this->lastPayment($obj->rowid);
        $toinsert = $this->paimenttorecord($obj->rowid, $lastrecorded);
        if (count($toinsert) > 0) {
          foreach ($toinsert as $echid) {
            $this->db->begin();
            $sql = "INSERT INTO ".MAIN_DB_PREFIX."payment_loan ";
            $sql .= "(fk_loan,datec,tms,datep,amount_capital,amount_insurance,amount_interest,fk_typepayment,num_payment,note_private,note_public,fk_bank,fk_user_creat,fk_user_modif) ";
            $sql .= "SELECT fk_loan,datec,tms,datep,amount_capital,amount_insurance,amount_interest,fk_typepayment,num_payment,note_private,note_public,fk_bank,fk_user_creat,fk_user_modif FROM ".MAIN_DB_PREFIX."loan_schedule WHERE rowid =".$echid;
            $res = $this->db->query($sql);
            if ($res) {
              $this->db->commit();
            } else {
              $this->db->rollback();
            }
          }
        }
      }
    }
  }


  private function lastPayment($loanid)
  {
    $sql = "SELECT p.datep";
    $sql .= " FROM ".MAIN_DB_PREFIX."payment_loan as p ";
    $sql .= " WHERE p.fk_loan = ".$loanid;
    $sql .= " ORDER BY p.datep DESC ";
    $sql .= " LIMIT 1 ";

    $resql = $this->db->query($sql);

    if ($resql) {
      $obj = $this->db->fetch_object($resql);
      return $this->db->jdate($obj->datep);
    } else {
      return -1;
    }
  }

  public function paimenttorecord($loanid, $datemax)
  {

    $result = array();

    $sql = "SELECT p.rowid";
    $sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element." as p ";
    $sql .= " WHERE p.fk_loan = ".$loanid;
    if (!empty($datemax)) { $sql .= " AND p.datep > '".$this->db->idate($datemax)."'"; }
    $sql .= " AND p.datep <= '".$this->db->idate(dol_now())."'";

    $resql = $this->db->query($sql);

    if ($resql) {
      while ($obj = $this->db->fetch_object($resql))
      {
        $result[] = $obj->rowid;
      }
    }

    return $result;
  }
}