<?php
/**********************************************************************
    Copyright (C) FrontAccounting, LLC.
	Released under the terms of the GNU General Public License, GPL, 
	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 License here <http://www.gnu.org/licenses/gpl-3.0.html>.
***********************************************************************/

function add_wo_costing($workorder_id, $cost_type, $trans_type, $trans_no, $factor=1)
{
	$sql = "INSERT INTO ".TB_PREF."wo_costing (workorder_id, cost_type, trans_type, trans_no, factor)
		VALUES (".db_escape($workorder_id).","
		.db_escape($cost_type).",".db_escape($trans_type).","
		.db_escape($trans_no).",".db_escape($factor).")";

	db_query($sql, "could not add work order costing");

}

function get_wo_costing($workorder_id)
{
	$sql="SELECT * FROM ".TB_PREF."wo_costing WHERE workorder_id=".db_escape($workorder_id);

	return db_query($sql, "could not get work order costing");
}

function delete_wo_costing($trans_type, $trans_no)
{
	$sql="DELETE FROM ".TB_PREF."wo_costing WHERE trans_type=".db_escape($trans_type)
		." AND trans_no=".db_escape($trans_no);

	db_query($sql, "could not delete work order costing");
}

//--------------------------------------------------------------------------------------

function add_material_cost($stock_id, $qty, $date_)
{
	$m_cost = 0;
    $result = get_bom($stock_id);
	while ($bom_item = db_fetch($result))
	{
		$standard_cost = get_standard_cost($bom_item['component']);
		$m_cost += ($bom_item['quantity'] * $standard_cost);
	}
	//$dec = user_price_dec();
	//price_decimal_format($m_cost, $dec);
	$sql = "SELECT material_cost FROM ".TB_PREF."stock_master WHERE stock_id = "
		.db_escape($stock_id);
	$result = db_query($sql);
	$myrow = db_fetch($result);
	$material_cost =  $myrow['material_cost'];
	//$qoh = get_qoh_on_date($stock_id, null, $date_);
	$qoh = get_qoh_on_date($stock_id);
	if ($qoh < 0)
		$qoh = 0;
	if ($qoh + $qty != 0)	
		$material_cost = ($qoh * $material_cost + $qty * $m_cost) /	($qoh + $qty);
	//$material_cost = round2($material_cost, $dec);	
	$sql = "UPDATE ".TB_PREF."stock_master SET material_cost=$material_cost
		WHERE stock_id=".db_escape($stock_id);
	db_query($sql,"The cost details for the inventory item could not be updated");
}

function add_overhead_cost($stock_id, $qty, $date_, $costs)
{
	//$dec = user_price_dec();
	//price_decimal_format($costs, $dec); 
	if ($qty != 0)
		$costs /= $qty;
	$sql = "SELECT overhead_cost FROM ".TB_PREF."stock_master WHERE stock_id = "
		.db_escape($stock_id);
	$result = db_query($sql);
	$myrow = db_fetch($result);
	$overhead_cost =  $myrow['overhead_cost'];
	//$qoh = get_qoh_on_date($stock_id, null, $date_);
	$qoh = get_qoh_on_date($stock_id);
	if ($qoh < 0)
		$qoh = 0;
	if ($qoh + $qty != 0)	
		$overhead_cost = ($qoh * $overhead_cost + $qty * $costs) /	($qoh + $qty);
	//$overhead_cost = round2($overhead_cost, $dec);	
	$sql = "UPDATE ".TB_PREF."stock_master SET overhead_cost=".db_escape($overhead_cost)."
		WHERE stock_id=".db_escape($stock_id);
	db_query($sql,"The cost details for the inventory item could not be updated");
}

function add_labour_cost($stock_id, $qty, $date_, $costs)
{
	//$dec = user_price_dec();
	//price_decimal_format($costs, $dec); 
	if ($qty != 0)
		$costs /= $qty;
	$sql = "SELECT labour_cost FROM ".TB_PREF."stock_master WHERE stock_id = "
		.db_escape($stock_id);
	$result = db_query($sql);
	$myrow = db_fetch($result);
	$labour_cost =  $myrow['labour_cost'];
	//$qoh = get_qoh_on_date($stock_id, null, $date_);
	$qoh = get_qoh_on_date($stock_id);
	if ($qoh < 0)
		$qoh = 0;
	if ($qoh + $qty != 0)	
		$labour_cost = ($qoh * $labour_cost + $qty * $costs) /	($qoh + $qty);
	//$labour_cost = round2($labour_cost, $dec);	
	$sql = "UPDATE ".TB_PREF."stock_master SET labour_cost=".db_escape($labour_cost)."
		WHERE stock_id=".db_escape($stock_id);
	db_query($sql,"The cost details for the inventory item could not be updated");
}

function add_issue_cost($stock_id, $qty, $date_, $costs)
{
	if ($qty != 0)
		$costs /= $qty;
	$sql = "SELECT material_cost FROM ".TB_PREF."stock_master WHERE stock_id = "
		.db_escape($stock_id);
	$result = db_query($sql);
	$myrow = db_fetch($result);
	$material_cost =  $myrow['material_cost'];
	//$dec = user_price_dec();
	//price_decimal_format($material_cost, $dec); 
	//$qoh = get_qoh_on_date($stock_id, null, $date_);
	$qoh = get_qoh_on_date($stock_id);
	if ($qoh < 0)
		$qoh = 0;
	if ($qoh + $qty != 0)	
		$material_cost = ($qty * $costs) /	($qoh + $qty);
	//$material_cost = round2($material_cost, $dec);	
	$sql = "UPDATE ".TB_PREF."stock_master SET material_cost=material_cost+"
		.db_escape($material_cost)
		." WHERE stock_id=".db_escape($stock_id);
	db_query($sql,"The cost details for the inventory item could not be updated");
}

/*
	Create journal entry for WO related costs.
*/
function add_wo_costs_journal($wo_id, $amount, $cost_type, $cr_acc, $db_acc, $date, $dim1=0, $dim2=0, $memo = null, $ref= null)
{
//-------- this should be done by single call to write_journal_entries() using items_cart()
//
	global $Refs, $wo_cost_types;

	begin_transaction();

    $journal_id = get_next_trans_no(ST_JOURNAL);
    if (!$ref) $ref = $Refs->get_next(ST_JOURNAL);

	add_gl_trans_std_cost(ST_JOURNAL, $journal_id, $date, $cr_acc,
		0, 0, $wo_cost_types[$cost_type], -$amount);
	$is_bank_to = is_bank_account($cr_acc);
	if ($is_bank_to)
	{
		add_bank_trans(ST_JOURNAL, $journal_id, $is_bank_to, "",
			$date, -$amount, PT_WORKORDER, $wo_id, get_company_currency(),
			"Cannot insert a destination bank transaction");
	}

	add_gl_trans_std_cost(ST_JOURNAL, $journal_id, $date, $db_acc,
		$dim1, $dim2,  $wo_cost_types[$cost_type], $amount);

	$Refs->save(ST_JOURNAL, $journal_id, $ref);

	add_wo_costing($wo_id, $cost_type, ST_JOURNAL, $journal_id);

	add_comments(ST_JOURNAL, $journal_id, $date, $memo);
	add_audit_trail(ST_JOURNAL, $journal_id, $date);

	commit_transaction();
}

function void_wo_costing($wo_id)
{
	$res = get_wo_costing($wo_id);

	while($row = db_fetch($res))
	{
		// void any related gl trans
		void_gl_trans($row['trans_type'], $row['trans_no'], true);
	}

	$sql = "DELETE FROM ".TB_PREF."wo_costing WHERE workorder_id=".db_escape($wo_id);
	db_query($sql, "could not delete work order costing");
}