<?php

/*
 *   This file is part of NOALYSS.
 *
 *   NOALYSS 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 2 of the License, or
 *   (at your option) any later version.
 *
 *   NOALYSS 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 NOALYSS; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

// Copyright Author Dany De Bontridder danydb@noalyss.eu

/**
 * @file
 * @brief Compute , display and export the tax summary
 *
 */

/**
 * @class Tax_Summary
 * @brief Compute , display and export the tax summary
 *
 */
class Tax_Summary
{

    private $date_start;
    private $date_end;
    private $db;
    private $tva_type; ///< exigibility of VAT : operation , payment date or depending of setting in tva_rate

    function __construct(Database $db, $p_start, $p_end)
    {
        $this->db=$db;
        $this->set_date_start($p_start);
        $this->set_date_end($p_end);

        // By default the TVA is computed by parameter in tva_rate.tva_payment_purchase or tva_rate.tva_payment_sale
        $this->set_tva_type("T");
    }

    public function get_tva_type()
    {
        return $this->tva_type;
    }

    public function set_tva_type($tva_type)
    {
        $this->tva_type=$tva_type;
        return $this;
    }

    /**
     * @return Database
     */
    public function get_db()
    {
        return $this->db;
    }

    /**
     * @param Database $db
     */
    public function set_db($db)
    {
        $this->db=$db;
        return $this;
    }

    /**
     * @return mixed
     */
    public function get_date_start()
    {
        return $this->date_start;
    }

    /**
     * @param mixed $date_start
     */
    public function set_date_start($date_start)
    {
        if (isDate($date_start)==NULL)
            throw new Exception(_("Format date invalide").$date_start);
        $this->date_start=$date_start;
        return $this;
    }

    /**
     * @return mixed
     */
    public function get_date_end()
    {
        return $this->date_end;

    }

    /**
     * @param mixed $date_end
     */
    public function set_date_end($date_end)
    {
        if (isDate($date_end)==NULL)
            throw new Exception(_("Format date invalide").$date_end);
        $this->date_end=$date_end;
        return $this;
    }

    /**
     * @brief depends of quant_* table, so we must check first that everything
     * is in these tables
     */
    function check()
    {
        /* -------------SALE --------------------------------- */
        $sql="select count(*) 
             from 
                quant_sold
             where  
		    j_id  in (select j_id from jrnx 
			where 
	                   jrnx.j_jrn_def in (select jrn_def_id from jrn_def where jrn_def_type = 'VEN')
        	            and j_date >= to_date($1,'DD.MM.YYYY') 
                	    and j_date <= to_date($2,'DD.MM.YYYY') 
			)
                  ";
        $cnt=$this->db->get_value($sql, [$this->date_start, $this->date_end]);
        $cnt_ledger=$this->db->get_value("
            select count(*) from jrnx 
			    where 
	                   jrnx.j_jrn_def in (select jrn_def_id from jrn_def where jrn_def_type = 'VEN')
        	            and j_date >= to_date($1,'DD.MM.YYYY') 
                	    and j_date <= to_date($2,'DD.MM.YYYY') 
        ", [$this->date_start, $this->date_end]);
        if ($cnt==0 && $cnt_ledger !=0)
        {

            throw new Exception('TX148:'._("Données manquantes"),100);

        }
        /* -------------Purchase --------------------------------- */

        $sql="select count(*) 
             from 
                quant_purchase
             where  
		    j_id  in (select j_id from jrnx 
			where 
	                   jrnx.j_jrn_def in (select jrn_def_id from jrn_def where jrn_def_type = 'ACH')
        	            and j_date >= to_date($1,'DD.MM.YYYY') 
                	    and j_date <= to_date($2,'DD.MM.YYYY') 
			)
                             ";
        $cnt=$this->db->get_value($sql, [$this->date_start, $this->date_end]);

        $cnt_ledger=$this->db->get_value("
            select count(*) from jrnx 
			    where 
	                   jrnx.j_jrn_def in (select jrn_def_id from jrn_def where jrn_def_type = 'ACH')
        	            and j_date >= to_date($1,'DD.MM.YYYY') 
                	    and j_date <= to_date($2,'DD.MM.YYYY') 
        ", [$this->date_start, $this->date_end]);

        if ($cnt ==0 &&  $cnt_ledger !=0)
        {
            throw new Exception('TX175'._("Données manquantes"),100);
        }
    }
    private function build_exigibility()
    {
        global $g_user;
        $sql_ledger=$g_user->get_ledger_sql('ALL', 3);
        
    }
    /**
     * Build the SQL for sale vat
     * @return string
     * 
     */
    private function build_sql_purchase($p_group_ledger)
    {
        global $g_user;
        $sql_ledger=$g_user->get_ledger_sql('ACH', 3);
        $group_ledger="";
        if ( $p_group_ledger )
        {
            $group_ledger='j_jrn_def,';
        }
        
        $sql="with detail_tva as (
                select 
                    sum(qp_vat) as amount_vat,
                    sum(qp_vat_sided) as amount_sided,
                    sum(qp_price) as amount_wovat,
                    sum(qp_nd_amount) as amount_noded_amount,
                    sum(qp_nd_tva) as amount_noded_tax,
                    sum(qp_nd_tva_recup) as amount_noded_return,
                    sum(qp_dep_priv) as amount_private,
                    {$group_ledger}
                    qp_vat_code
                from 
                    quant_purchase 
                    join tva_rate on (qp_vat_code=tva_rate.tva_id) 
                    join jrnx on (quant_purchase.j_id=jrnx.j_id)
                    join jrn_def on (jrn_def.jrn_def_id=jrnx.j_jrn_def)
                    join jrn on (jrn.jr_grpt_id=jrnx.j_grpt)
                ";
        if ( $this->tva_type=="O")
        {
            $sql=$sql."
                where 
                    j_date >= to_date($1,'DD.MM.YYYY') 
                    and j_date <= to_date($2,'DD.MM.YYYY') 
                    and {$sql_ledger}
                group by {$group_ledger} qp_vat_code)  ";
        } elseif ($this->tva_type=="P") {
            $sql=$sql." 
                where
                    coalesce(to_char(jr_date_paid,'YYYYMMDD'),'00000000') >= 
                                    to_char(to_date($1,'DD.MM.YYYY'),'YYYYMMDD') 
                    and coalesce(to_char(jr_date_paid,'YYYYMMDD'),'99999999') <= 
                                    to_char(to_date($2,'DD.MM.YYYY'),'YYYYMMDD') 
                    and {$sql_ledger}
                group by {$group_ledger} qp_vat_code)  ";
        }elseif ($this->tva_type=="T") {
            $sql=$sql."  where
                        (   tva_rate.tva_payment_purchase='P'
                            and coalesce(to_char(jr_date_paid,'YYYYMMDD'),'00000000') >= 
                                        to_char(to_date($1,'DD.MM.YYYY'),'YYYYMMDD') 
                            and coalesce(to_char(jr_date_paid,'YYYYMMDD'),'99999999') <= 
                                         to_char(to_date($2,'DD.MM.YYYY'),'YYYYMMDD') 
                            )
                         or
                        (   tva_rate.tva_payment_purchase='O'
                            and coalesce(to_char(jr_date,'YYYYMMDD'),'00000000') >= 
                                         to_char(to_date($1,'DD.MM.YYYY'),'YYYYMMDD') 
                            and coalesce(to_char(jr_date,'YYYYMMDD'),'99999999') <= 
                                         to_char(to_date($2,'DD.MM.YYYY'),'YYYYMMDD') 
                            )
                        and {$sql_ledger}
                    group by {$group_ledger} qp_vat_code) ";
                    
        } else {
            throw new Exception(_("Exig TVA invalide"),1001);
        }
        return $sql;
    }
    /**
     * @brief Build the SQL for sale vat
     * 
     * @param $p_group_ledger bool true group by ledgers
     * 
     * @return string
     * 
     */
    private function build_sql_sale($p_group_ledger=TRUE)
    {
        global $g_user;
        $sql_ledger=$g_user->get_ledger_sql('VEN', 3);
        $group_ledger="";
        if ( $p_group_ledger )
        {
            $group_ledger='j_jrn_def,';
        }
         $sql="with detail_tva as (
                    select 
                        sum(qs_vat) as amount_vat,
                        sum(qs_vat_sided) as amount_sided,
                        sum(qs_price) as amount_wovat,
                        {$group_ledger}
                        qs_vat_code
                    from 
                        quant_sold 
                        join tva_rate on (qs_vat_code=tva_rate.tva_id) 
                        join jrnx on (quant_sold.j_id=jrnx.j_id)
                        join jrn_def on (jrn_def.jrn_def_id=jrnx.j_jrn_def)
                        join jrn on (jrn.jr_grpt_id=jrnx.j_grpt)";
        if ( $this->tva_type=="O")
        {
           $sql=$sql." 
                    where 
                        j_date >= to_date($1,'DD.MM.YYYY') 
                        and j_date <= to_date($2,'DD.MM.YYYY') 
                        and {$sql_ledger}
                    group by {$group_ledger} qs_vat_code)  ";
                        
        } elseif ($this->tva_type=="P") {
           $sql=$sql." 
                    where
                        coalesce(to_char(jr_date_paid,'YYYYMMDD'),'00000000') >= 
                                    to_char(to_date($1,'DD.MM.YYYY'),'YYYYMMDD') 
                        and coalesce(to_char(jr_date_paid,'YYYYMMDD'),'99999999') <= 
                                    to_char(to_date($2,'DD.MM.YYYY'),'YYYYMMDD') 
                        and {$sql_ledger}
                    group by  {$group_ledger} qs_vat_code)  ";
              
        } elseif ($this->tva_type=="T") {
            $sql=$sql." 
                    where
                        (   tva_rate.tva_payment_sale='P'
                            and coalesce(to_char(jr_date_paid,'YYYYMMDD'),'00000000') >= 
                                        to_char(to_date($1,'DD.MM.YYYY'),'YYYYMMDD') 
                            and coalesce(to_char(jr_date_paid,'YYYYMMDD'),'99999999') <= 
                                         to_char(to_date($2,'DD.MM.YYYY'),'YYYYMMDD') 
                            )
                         or
                        (   tva_rate.tva_payment_sale='O'
                            and coalesce(to_char(jr_date,'YYYYMMDD'),'00000000') >= 
                                         to_char(to_date($1,'DD.MM.YYYY'),'YYYYMMDD') 
                            and coalesce(to_char(jr_date,'YYYYMMDD'),'99999999') <= 
                                         to_char(to_date($2,'DD.MM.YYYY'),'YYYYMMDD') 
                            )
                        and {$sql_ledger}
                    group by {$group_ledger} qs_vat_code)  
                   ";
        }
        else {
            throw new Exception(_("Exig TVA invalide"),1001);
        }
        return $sql;
    }
    /**
     *  Total for each sales ledger
     * @return array
     */
    function get_row_sale()
    {
        $sql=$this->build_sql_sale(TRUE);
        $sql.=" 
                    select jrn_def_name,
                        tva_code ||' ('||tva_rate.tva_label||')' tva_label,
                        qs_vat_code,
                        tva_rate,
                        tva_both_side,
                        amount_vat,
                        amount_wovat,
                        amount_sided,
                        tva_payment_sale as tva_type,
                        jrn_def.jrn_def_id
                    from
                        detail_tva 
                        join tva_rate on (tva_rate.tva_id=qs_vat_code)
                        join jrn_def on (jrn_def.jrn_def_id=j_jrn_def)
                    order by jrn_def.jrn_def_id,jrn_def_name, tva_code ||' ('||tva_rate.tva_label||')'";
                
        $array=$this->db->get_array($sql, [$this->date_start, $this->date_end]);
        return $array;
    }

    /**
     * Total for each purchase ledger
     * @return array
     */
    function get_row_purchase()
    {
      $sql=$this->build_sql_purchase(TRUE)."
                select jrn_def_name,
                     tva_code ||' ('||tva_rate.tva_label||')' tva_label,
                    tva_rate,
                    tva_both_side,
                    qp_vat_code,
                    amount_vat,
                    amount_wovat,
                    amount_sided,
                    amount_noded_amount,
                    amount_noded_tax,
                    amount_noded_return,
                    amount_private,
                   jrn_def.jrn_def_id
                from
                    detail_tva 
                    join tva_rate on (tva_rate.tva_id=qp_vat_code)
                    join jrn_def on (jrn_def.jrn_def_id=j_jrn_def)
                order by  jrn_def.jrn_def_id,jrn_def_name, tva_code ||' ('||tva_rate.tva_label||')'";
        $array=$this->db->get_array($sql, [$this->date_start, $this->date_end]);
        return $array;
    }

    /**
     * Summary for all sales ledger
     */
    function get_summary_sale()
    {
        $sql=$this->build_sql_sale(FALSE);
        $sql.="select 
                     tva_code ||' ('||tva_rate.tva_label||')' tva_label,
                    qs_vat_code,
                    tva_rate,
                    tva_both_side,
                    amount_vat,
                    amount_wovat,
                    amount_sided,
                    tva_rate.tva_payment_sale
                from
                    detail_tva 
                    join tva_rate on (tva_rate.tva_id=qs_vat_code)
                    order by  tva_code ||' ('||tva_rate.tva_label||')'";
        $array=$this->db->get_array($sql, [$this->date_start, $this->date_end]);
        return $array;
    }

    /**
     * @brief Summary for all purchase ledgers
     */
    function get_summary_purchase()
    {
        
        $sql=$this->build_sql_purchase(FALSE)."
                select 
                     tva_code ||' ('||tva_rate.tva_label||')' tva_label,
                    tva_rate,
                    tva_both_side,
                    qp_vat_code,
                    amount_vat,
                    amount_wovat,
                    amount_sided,
                    amount_noded_amount,
                    amount_noded_tax,
                    amount_noded_return,
                    amount_private
                from
                    detail_tva 
                    join tva_rate on (tva_rate.tva_id=qp_vat_code)
                order by  tva_code ||' ('||tva_rate.tva_label||')'";
        $array=$this->db->get_array($sql, [$this->date_start, $this->date_end]);

        return $array;
    }

    /**
     * @brief display the summary of VAT in the range of date
     */
    function display()
    {
        require_once NOALYSS_INCLUDE."/template/tax_summary_display.php";
    }

    /**
     * @brief display a form to export in CSV
     * @see export_printtva_csv.php
     */
    function form_export_csv()
    {
        $id=uniqid("export_");
        echo '<form method="GET" action="export.php" ';
        printf( 'id="%s"  onsubmit="download_document_form(\'%s\')">',$id,$id);
        echo Dossier::hidden();
        echo HtmlInput::hidden("act", 'CSV:printtva');
        echo HtmlInput::hidden("date_start", $this->date_start);
        echo HtmlInput::hidden("date_end", $this->date_end);
        echo HtmlInput::hidden("tva_type", $this->tva_type);

        echo HtmlInput::submit("CSV:printtva", _("Export CSV"));
        echo '</form>';
    }

    /**
     * @brief display a form to export in PDF
     * @see export_printtva_pdf.php
     */
    function form_export_pdf()
    {
        $id=uniqid("export_");
        echo '<form method="GET" action="export.php" ';
        printf( 'id="%s"  onsubmit="download_document_form(\'%s\')">',$id,$id);
        echo Dossier::hidden();
        echo HtmlInput::hidden("act", 'PDF:printtva');
        echo HtmlInput::hidden("date_start", $this->date_start);
        echo HtmlInput::hidden("date_end", $this->date_end);
        echo HtmlInput::hidden("tva_type", $this->tva_type);
        echo HtmlInput::submit("PDF:printtva", _("Export PDF"));
        echo '</form>';
    }

    /**
     * @brief Build a link to show the detail of a VAT ID
     * @param $dateStart date from format 'DD.MM.YYYY'
     * @param $DateeEd date to  format 'DD.MM.YYYY'
     * @param $nLedger_id integer JRN_DEF.JRN_DEF_ID
     * @param $nVAT_id integer TVA_RATE.TVA_ID
     * @return javascript string
     */
    function build_link_detail($dossier_id,$dateStart,$DateeEd,$nLedger_id,$nVAT_id)
    {


        $js=sprintf("tax_detail_view('%s','%s','%s','%s','%s')",
            $dossier_id,$this->date_start,$this->date_end,$nLedger_id,$nVAT_id);

        return $js;
        

    }

}