# 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
from collections import defaultdict


class ActivityStatement(models.AbstractModel):
    """Model of Activity Statement"""

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

    def _initial_balance_sql_q1(self, partners, date_start, account_type):
        return str(self._cr.mogrify("""
            SELECT l.partner_id, l.currency_id, l.company_id,
            CASE WHEN l.currency_id is not null AND l.amount_currency > 0.0
                THEN sum(l.amount_currency)
                ELSE sum(l.debit)
            END as debit,
            CASE WHEN l.currency_id is not null AND l.amount_currency < 0.0
                THEN sum(l.amount_currency * (-1))
                ELSE sum(l.credit)
            END as credit
            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)
            WHERE l.partner_id IN %(partners)s AND at.type = %(account_type)s
                                AND l.date < %(date_start)s AND not l.blocked
            GROUP BY l.partner_id, l.currency_id, l.amount_currency,
                                l.company_id
        """, locals()), "utf-8")

    def _initial_balance_sql_q2(self, company_id):
        return str(self._cr.mogrify("""
            SELECT Q1.partner_id, debit-credit AS balance,
            COALESCE(Q1.currency_id, c.currency_id) AS currency_id
            FROM Q1
            JOIN res_company c ON (c.id = Q1.company_id)
            WHERE c.id = %(company_id)s
        """, locals()), "utf-8")

    def _get_account_initial_balance(self, company_id, partner_ids,
                                     date_start, account_type):
        balance_start = defaultdict(list)
        partners = tuple(partner_ids)
        # pylint: disable=E8103
        self.env.cr.execute("""WITH Q1 AS (%s), Q2 AS (%s)
        SELECT partner_id, currency_id, balance
        FROM Q2""" % (self._initial_balance_sql_q1(partners, date_start,
                                                   account_type),
                      self._initial_balance_sql_q2(company_id)))
        for row in self.env.cr.dictfetchall():
            balance_start[row.pop('partner_id')].append(row)
        return balance_start

    def _display_lines_sql_q1(self, partners, date_start, date_end,
                              account_type):
        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 sum(l.amount_currency)
                ELSE sum(l.debit)
            END as debit,
            CASE WHEN (l.currency_id is not null AND l.amount_currency < 0.0)
                THEN sum(l.amount_currency * (-1))
                ELSE sum(l.credit)
            END as credit,
            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)
            WHERE l.partner_id IN %(partners)s
                AND at.type = %(account_type)s
                AND %(date_start)s <= l.date
                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.amount_currency, l.company_id
        """, locals()), "utf-8")

    def _display_lines_sql_q2(self, company_id):
        return str(self._cr.mogrify("""
            SELECT Q1.partner_id, move_id, date, date_maturity, Q1.name, ref,
                            debit, credit, debit-credit as amount, blocked,
            COALESCE(Q1.currency_id, c.currency_id) AS currency_id
            FROM Q1
            JOIN res_company c ON (c.id = Q1.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 Q1 AS (%s),
             Q2 AS (%s)
        SELECT partner_id, move_id, date, date_maturity, name, ref, debit,
                            credit, amount, blocked, currency_id
        FROM Q2
        ORDER BY date, date_maturity, move_id""" % (
            self._display_lines_sql_q1(partners, date_start, date_end,
                                       account_type),
            self._display_lines_sql_q2(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["activity.statement.wizard"].with_context(
                active_ids=docids, model="res.partner"
            )
            data = wiz.create({})._prepare_statement()
        data['amount_field'] = 'amount'
        return super()._get_report_values(docids, data)