# Copyright 2018 Eficent Business and IT Consulting Services S.L.
#   (http://www.eficent.com)
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).

from odoo import api, models


class OutstandingStatement(models.AbstractModel):
    """Model of Outstanding Statement"""

    _inherit = 'statement.common'
    _name = 'report.partner_statement.outstanding_statement'

    def _display_lines_sql_q0(self, date_end):
        return str(
            self._cr.mogrify("""
                SELECT l1.id,
                CASE WHEN l1.reconciled = TRUE and l1.balance > 0.0
                                    THEN max(pd.max_date)
                    WHEN l1.reconciled = TRUE and l1.balance < 0.0
                                    THEN max(pc.max_date)
                    ELSE null
                END as reconciled_date
                FROM account_move_line l1
                LEFT JOIN (SELECT pr.*
                    FROM account_partial_reconcile pr
                    INNER JOIN account_move_line l2
                    ON pr.credit_move_id = l2.id
                    WHERE l2.date <= %(date_end)s
                ) as pd ON pd.debit_move_id = l1.id
                LEFT JOIN (SELECT pr.*
                    FROM account_partial_reconcile pr
                    INNER JOIN account_move_line l2
                    ON pr.debit_move_id = l2.id
                    WHERE l2.date <= %(date_end)s
                ) as pc ON pc.credit_move_id = l1.id
                GROUP BY l1.id
            """, locals()
            ),
            "utf-8"
        )

    def _display_lines_sql_q1(self, partners, date_end, account_type):
        partners = tuple(partners)
        return str(self._cr.mogrify("""
            SELECT m.name AS move_id, l.partner_id, l.date, l.name,
                            l.ref, l.blocked, l.currency_id, l.company_id,
            CASE WHEN (l.currency_id is not null AND l.amount_currency > 0.0)
                THEN avg(l.amount_currency)
                ELSE avg(l.debit)
            END as debit,
            CASE WHEN (l.currency_id is not null AND l.amount_currency < 0.0)
                THEN avg(l.amount_currency * (-1))
                ELSE avg(l.credit)
            END as credit,
            CASE WHEN l.balance > 0.0
                THEN l.balance - sum(coalesce(pd.amount, 0.0))
                ELSE l.balance + sum(coalesce(pc.amount, 0.0))
            END AS open_amount,
            CASE WHEN l.balance > 0.0
                THEN l.amount_currency - sum(coalesce(pd.amount_currency, 0.0))
                ELSE l.amount_currency + sum(coalesce(pc.amount_currency, 0.0))
            END AS open_amount_currency,
            CASE WHEN l.date_maturity is null
                THEN l.date
                ELSE l.date_maturity
            END as date_maturity
            FROM account_move_line l
            JOIN account_account_type at ON (at.id = l.user_type_id)
            JOIN account_move m ON (l.move_id = m.id)
            LEFT JOIN Q0 ON Q0.id = l.id
            LEFT JOIN (SELECT pr.*
                FROM account_partial_reconcile pr
                INNER JOIN account_move_line l2
                ON pr.credit_move_id = l2.id
                WHERE l2.date <= %(date_end)s
            ) as pd ON pd.debit_move_id = l.id
            LEFT JOIN (SELECT pr.*
                FROM account_partial_reconcile pr
                INNER JOIN account_move_line l2
                ON pr.debit_move_id = l2.id
                WHERE l2.date <= %(date_end)s
            ) as pc ON pc.credit_move_id = l.id
            WHERE l.partner_id IN %(partners)s AND at.type = %(account_type)s
                                AND (Q0.reconciled_date is null or
                                    Q0.reconciled_date > %(date_end)s)
                                AND l.date <= %(date_end)s
            GROUP BY l.partner_id, m.name, l.date, l.date_maturity, l.name,
                                l.ref, l.blocked, l.currency_id,
                                l.balance, l.amount_currency, l.company_id
            """, locals()), "utf-8"
        )

    def _display_lines_sql_q2(self):
        return str(
            self._cr.mogrify("""
                SELECT partner_id, currency_id, move_id, date, date_maturity,
                                debit, credit, name, ref, blocked, company_id,
                CASE WHEN currency_id is not null
                        THEN open_amount_currency
                        ELSE open_amount
                END as open_amount
                FROM Q1
                """, locals()
            ),
            "utf-8"
        )

    def _display_lines_sql_q3(self, company_id):
        return str(self._cr.mogrify("""
            SELECT Q2.partner_id, move_id, date, date_maturity, Q2.name, ref,
                            debit, credit, debit-credit AS amount, blocked,
            COALESCE(Q2.currency_id, c.currency_id) AS currency_id, open_amount
            FROM Q2
            JOIN res_company c ON (c.id = Q2.company_id)
            WHERE c.id = %(company_id)s
            """, locals()), "utf-8"
        )

    def _get_account_display_lines(self, company_id, partner_ids, date_start,
                                   date_end, account_type):
        res = dict(map(lambda x: (x, []), partner_ids))
        partners = tuple(partner_ids)
        # pylint: disable=E8103
        self.env.cr.execute("""
        WITH Q0 as (%s),
             Q1 AS (%s),
             Q2 AS (%s),
             Q3 AS (%s)
        SELECT partner_id, currency_id, move_id, date, date_maturity, debit,
                            credit, amount, open_amount, name, ref, blocked
        FROM Q3
        ORDER BY date, date_maturity, move_id""" % (
            self._display_lines_sql_q0(date_end),
            self._display_lines_sql_q1(partners, date_end, account_type),
            self._display_lines_sql_q2(),
            self._display_lines_sql_q3(company_id)))
        for row in self.env.cr.dictfetchall():
            res[row.pop('partner_id')].append(row)
        return res

    @api.multi
    def _get_report_values(self, docids, data):
        if not data:
            wiz = self.env["outstanding.statement.wizard"].with_context(
                active_ids=docids, model="res.partner"
            )
            data = wiz.create({})._prepare_statement()
        data['amount_field'] = 'open_amount'
        return super()._get_report_values(docids, data)