<?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>.
 ***********************************************************************/
$page_security = 'SA_DEPRECIATION';
$path_to_root = "..";

include_once($path_to_root . "/includes/session.inc");

include_once($path_to_root . "/includes/date_functions.inc");
include_once($path_to_root . "/admin/db/fiscalyears_db.inc");
include_once($path_to_root . "/includes/ui.inc");
include_once($path_to_root . "/includes/data_checks.inc");
include_once($path_to_root . "/includes/ui/items_cart.inc");

include_once($path_to_root . "/fixed_assets/includes/depreciation.inc");
include_once($path_to_root . "/fixed_assets/includes/fixed_assets_db.inc");

$js = "";
if (user_use_date_picker())
  $js .= get_js_date_picker();

page(_($help_context = "Process Depreciation"), false, false, "", $js);

//---------------------------------------------------------------------------------------------
function check_data()
{
  $myrow = get_item($_POST['stock_id']);

  if ($_POST['months'] > depreciation_months($myrow['depreciation_date'])) {
    display_error(_("The number of months is greater than the timespan between the depreciation start and the end of the fiscal year."));
    set_focus('months');
    return false;
  }

  return true;
}

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

function handle_submit()
{
  if (!check_data())
    return;

  $item = get_item($_POST['stock_id']);

  $period = get_company_pref('depreciation_period'); 
  $gl_rows = compute_gl_rows_for_depreciation($item, $_POST['months'], $period);

  $trans_no = process_fixed_asset_depreciation($_POST['stock_id'], $gl_rows, $_POST['refline'], $_POST['memo_']);

  meta_forward($_SERVER['PHP_SELF'], "AddedID=".$trans_no);
}

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

if (get_post('process'))
  handle_submit();

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

if (isset($_GET['AddedID'])) 
{
  $trans_no = $_GET['AddedID'];
  $trans_type = ST_JOURNAL;

  display_notification(_("The fixed asset has been depreciated for this year"));

  display_note(get_gl_view_str($trans_type, $trans_no, _("View the GL &Postings for this Depreciation")), 1, 0);

  hyperlink_no_params($_SERVER['PHP_SELF'], _("Depreciate &Another Fixed Asset"));

	display_footer_exit();
}

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

check_db_has_depreciable_fixed_assets(_("There are no fixed assets that could be depreciated."));

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

function show_gl_rows() {

  $item = get_item($_POST['stock_id']);

  hidden('stock_id');
  hidden('months');
  hidden('refline');
  hidden('memo_');

  start_table(TABLESTYLE, "width=40%");
  $th = array(_("Item"), _('Date'), _('Account'), _('Debit'), _("Credit"));

  table_header($th);
  $k = 0; //row colour counter

  $period = get_company_pref('depreciation_period'); 
  $gl_rows = compute_gl_rows_for_depreciation($item, $_POST['months'], $period);

  foreach($gl_rows as $myrow)
  {
    alt_table_row_color($k);
    label_cell($item['stock_id']);
    label_cell($myrow["date"]);
    label_cell($item['cogs_account'].' '.get_gl_account_name($item["cogs_account"]));
    amount_cell($myrow["value"]);
    label_cell("");
    end_row();

    alt_table_row_color($k);
    label_cell($item['stock_id']);
    label_cell($myrow["date"]);
    label_cell($item["adjustment_account"].' '.get_gl_account_name($item["adjustment_account"]));
    label_cell("");
    amount_cell($myrow["value"]);
    end_row();
  }

  end_table(1);

  submit_center('process', _("Process Depreciation"), true, false);
}

function show_gl_controls() {
  global $Ajax;

  check_db_has_depreciable_fixed_assets('There are no active fixed asset defined in the system.');
 
  start_table(TABLESTYLE_NOBORDER);
  start_row();
  stock_depreciable_fa_list_cells(_("Select an item:"), 'stock_id', null,
      false, true);
  end_row();
  end_table();

  $myrow = get_item($_POST['stock_id']);

  if (list_updated('stock_id') || !isset($_POST['months'])) {
    //$_POST['depreciation_start'] = sql2date($myrow['depreciation_start']);
    $_POST['months'] = depreciation_months($myrow['depreciation_date']);
    unset($_POST['memo_']);
  }

  $Ajax->activate('depreciation_date');
  $Ajax->activate('months');
  $Ajax->activate('memo_');

  start_table(TABLESTYLE2);

  if (!isset($_POST['date']))
    $_POST['date'] = Today();

  $start = next_depreciation_date($myrow['depreciation_date']);
  $start_text =  _(date('F', $start)).' '.date('Y', $start);

  //date_row(_("Starting from month").":", 'depreciation_start', '', null, 0, 0, 0, null, true);
  label_row(_("Starting from month").":", $start_text, null, null, 0, 'depreciation_date');
  $period = get_company_pref('depreciation_period'); 
  if ($period != FA_YEARLY) {
    text_row(_("Period").":", 'months', null, 4, 3, null, null, _("months"));
  }
  else {
    label_row(_("Period").":", '1 year');
    hidden ('months');
  }
  refline_list_row(_("Reference line:"), 'refline', ST_JOURNAL, null, false, true);
  textarea_row(_("Memo:"), 'memo_', null, 40,4);

  end_table(1);

  submit_center_first('show', _("Show GL Rows"), true, false);
  submit_center_last('process', _("Process Depreciation"), true, false);
}

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

start_form();

if (isset($_POST['show']) && check_data())
  show_gl_rows();
else
  show_gl_controls();

end_form();

end_page();