<?php


class Windykacja_BillingListDocs {

	var $_docs;
	var $_saldo;

	public function __construct() {
		$this->_docs = array();
		$this->_saldo = 0;
	}

	public function add_bill_doc($date, $type, $item) {
		$bill_doc = new Windykacja_BillingDoc($date, $type, $item);
		if ('FVAT' == $type && '0000-00-00' == $date) {
			$date = $item['BILL_DATE'];
		}
		$this->_docs[$date][] = $bill_doc;
		if ($date <= date("Y-m-d")) {
			$this->_saldo += $bill_doc->get_saldo();
		}
	}

	public function add_event($date, $type, $item) {
		$event = new Windykacja_EventDoc($date, $type, $item);
		$this->_docs[$date][] = $event;
	}

	public function get_saldo() {
		if (round($this->_saldo, 2) === 0.0) {// float point bug round('-6.821210263297E-13', 2) = -0
			$this->_saldo = 0.0;
		}
		return round($this->_saldo, 2);
	}

	public function get_saldo_30_dni() {
		// `PAY_SALDO_30_DNI` bez fv z terminem płatności < 30 dni
		$saldo_30_dni = 0;
		$dateMinus30dni = date('Y-m-d', mktime(0,0,0, date('n'), date('j') - 30, date('Y')));
		foreach ($this->_docs as $kData => $vDocs) {
			foreach ($vDocs as $vDoc) {
				if ($vDoc instanceof Windykacja_BillingDoc) {
					if ('FVAT' == $vDoc->get_type()) {// TODO: if FVAT then use only date PAYMENT_TERM >= 30 dni
						if ($vDoc->get('PAYMENT_TERM') > $dateMinus30dni) {
							//echo'<pre>POMIŃ! $vDoc pay_term('.$vDoc->get('PAYMENT_TERM').') ';print_r($vDoc);echo'</pre>';
						} else {
							//echo'<pre>$vDoc pay_term('.$vDoc->get('PAYMENT_TERM').'/'.($vDoc->get('PAYMENT_TERM') > $dateMinus30dni).') ';print_r($vDoc);echo'</pre>';
							$saldo_30_dni += $vDoc->get_saldo();
						}
					} else {
						$saldo_30_dni += $vDoc->get_saldo();
					}
				}
			}
		}
		$saldo_30_dni = round($saldo_30_dni, 2);
		if ($saldo_30_dni === 0.0) {// float point bug round('-6.821210263297E-13', 2) = -0
			$saldo_30_dni = 0.0;
		}
		return $saldo_30_dni;
	}

	public function get_saldo_issued() {
		// `PAY_SALDO_ISSUED` fv wg daty wystawienia
		$saldo_issued = 0;
		foreach ($this->_docs as $kData => $vDocs) {
			foreach ($vDocs as $vDoc) {
				if ($vDoc instanceof Windykacja_BillingDoc) {
					if (1) {// TODO: if FVAT then use SELL_DATE instead of PAYMENT_TERM
						$saldo_issued += $vDoc->get_saldo();
					} else {
						$saldo_issued += $vDoc->get_saldo();
					}
				}
			}
		}
		$saldo_issued = round($saldo_issued, 2);
		if ($saldo_issued === 0.0) {// float point bug round('-6.821210263297E-13', 2) = -0
			$saldo_issued = 0.0;
		}
		return $saldo_issued;
	}

	public function get_docs() {
		return $this->_docs;
	}

	public function sort_docs() {
		ksort($this->_docs);
	}

	function set_saldo_for_all_docs() {
		$saldo = 0;
		foreach ($this->_docs as $day => $listDayDocs) {
			foreach ($listDayDocs as $doc) {
				$saldo += $doc->get_saldo();
				$doc->set_saldo_overall($saldo);
			}
		}
	}

	public function get_unpaid_fvat() {
		$today_date = date("Y-m-d");
		$fvat_arr = array();
		$saldo_curr = $this->get_saldo();
		if ($saldo_curr >= 0) {
			return $fvat_arr;
		}
		$break = false;
		$saldo_dates_keys = array_keys($this->_docs);
		$saldo_dates_keys = array_reverse($saldo_dates_keys);
		foreach ($saldo_dates_keys as $k_data) {
			if ($k_data > $today_date) continue;
			$v_saldo_arr = $this->_docs[$k_data];
			foreach ($v_saldo_arr as $k_ind => $v_doc) {
				if ($v_doc->get_type() == 'FVAT') {
					$h = $v_doc->get_data();
					$h['WINIEN_POZOSTALO'] = round($h['WINIEN'], 2);
					$saldo_curr += round($h['WINIEN'], 2);
					if ($saldo_curr >= 0) {
						$h['WINIEN_POZOSTALO'] -= $saldo_curr;
						$break = true;
					}
					$fvat_arr[] = $h;
				}
				if ($break) break;
			}
			if ($break) break;
		}
		return $fvat_arr;
	}

	public function getLastIncomeDocsForSaldo($saldoLimit) {
		$today_date = date("Y-m-d");
		$incomeDocs = array();
		$break = false;
		$saldo_dates_keys = array_keys($this->_docs);
		$saldo_dates_keys = array_reverse($saldo_dates_keys);
		$saldo_curr = 0;
		foreach ($saldo_dates_keys as $k_data) {
			if ($k_data > $today_date) continue;
			$v_saldo_arr = $this->_docs[$k_data];
			foreach ($v_saldo_arr as $k_ind => $v_doc) {
				if (in_array($v_doc->get_type(), array('WB_MASS','KP'))) {
					$h = $v_doc->get_data();
					$h['MA_POZOSTALO'] = round($h['MA'], 2);
					$saldo_curr += round($h['MA'], 2);
					if ($saldo_curr >= $saldoLimit) {
						$h['MA_POZOSTALO'] -= $saldo_curr - $saldoLimit;
						$break = true;
					}
					$incomeDocs[] = $h;
				}
				if ($break) break;
			}
			if ($break) break;
		}
		return $incomeDocs;
	}

	public function get_last_pay_doc() {
		$last_pay_doc = null;
		$today_date = date("Y-m-d");
		$break = false;
		foreach ($this->_docs as $k_data => $v_saldo_arr) {
			if ($k_data > $today_date) continue;
			foreach ($v_saldo_arr as $k_ind => $v_doc) {
				if (in_array($v_doc->get_type(), array('WB_MASS','KP'))) {
					$last_pay_doc = $v_doc;
					break;
				}
			}
			if ($break) break;
		}
		return $last_pay_doc;
	}

	public function get_last_fvat_doc() {
		$last_fvat_doc = null;
		$today_date = date("Y-m-d");
		$break = false;
		foreach ($this->_docs as $k_data => $v_saldo_arr) {
			if ($k_data > $today_date) continue;
			foreach ($v_saldo_arr as $k_ind => $v_doc) {
				if (in_array($v_doc->get_type(), array('FVAT'))) {
					$last_fvat_doc = $v_doc;
					break;
				}
			}
			if ($break) break;
		}
		return $last_fvat_doc;
	}

}


class Windykacja_TimelineDoc {

	var $_type;
	var $_date;
	var $_data;
	var $_class;
	var $_saldo;
	var $_saldo_overall;

	public function get_type() { return $this->_type; }
	public function get_date() { return $this->_date; }
	public function get_data() { return $this->_data; }
	public function get_class() { return $this->_class; }
	public function get_saldo() { return $this->_saldo; }
	public function get($key) {
		return $this->_data[$key];
	}
	public function get_saldo_overall() { return $this->_saldo_overall; }
	public function set_saldo_overall($overallSaldo) {
		$this->_saldo_overall = round($overallSaldo, 2);
	}

}


class Windykacja_EventDoc extends Windykacja_TimelineDoc {

	public function __construct($date, $type, &$data) {
		$this->_date = $date;
		$this->_data = $data;
		$this->_class = 'EVENT';
		$this->_type = $type;
		$this->_saldo = 0;
	}

}


class Windykacja_BillingDoc extends Windykacja_TimelineDoc {

	public function __construct($date, $type, &$data) {
		$this->_date = $date;
		$this->_data = $data;
		$this->_class = 'BILLING';
		$this->_convert_type($type);
		$this->_count_saldo();
	}

	public function get($key) {
		return $this->_data[$key];
	}

	public function _convert_type($type) {
		$this->_type = $type;
		switch ($this->_type) {
			case 'FVAT':
				$this->_data['nr'] = $this->_data['ID_BILLING_NUMBERS'];
				$this->_data['WINIEN'] = $this->_data['WARTOSC'];
				$this->_data['MA'] = 0;
				break;

			case 'KP':
			case 'KW':
			case 'WB':
			case 'WB_MASS':
			case 'KORV':
				$this->_data['nr'] = $this->_data['NUMBER'];
				break;

			default:

		}
	}

	public function _count_saldo() {
		$this->_saldo = 0;
		switch ($this->_type) {
			case 'FVAT':
				$this->_saldo -= round($this->_data['WARTOSC'], 2);
				break;

			case 'KORV':
				$this->_saldo -= round($this->_data['MA'], 2);
				break;

			case 'KP':
			case 'KW':
			case 'WB':
			case 'WB_MASS':
				$this->_saldo += round($this->_data['MA'], 2);
				$this->_saldo -= round($this->_data['WINIEN'], 2);
				break;

			default:

		}
	}

}