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path: root/addons/l10n_in/report/exempted_gst_report.py
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# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from odoo import api, fields, models, tools


class L10nInExemptedReport(models.Model):
    _name = "l10n_in.exempted.report"
    _description = "Exempted Gst Supplied Statistics"
    _auto = False

    account_move_id = fields.Many2one('account.move', string="Account Move")
    partner_id = fields.Many2one('res.partner', string="Customer")
    out_supply_type = fields.Char(string="Outward Supply Type")
    in_supply_type = fields.Char(string="Inward Supply Type")
    nil_rated_amount = fields.Float("Nil rated supplies")
    exempted_amount = fields.Float("Exempted")
    non_gst_supplies = fields.Float("Non GST Supplies")
    date = fields.Date("Date")
    company_id = fields.Many2one('res.company', string="Company")
    journal_id = fields.Many2one('account.journal', string="Journal")

    def _select(self):
        select_str = """SELECT aml.id AS id,
            aml.partner_id AS partner_id,
            am.date,
            aml.balance * (CASE WHEN aj.type = 'sale' THEN -1 ELSE 1 END) AS price_total,
            am.journal_id,
            aj.company_id,
            aml.move_id as account_move_id,

            (CASE WHEN p.state_id = cp.state_id
                THEN (CASE WHEN p.vat IS NOT NULL
                    THEN 'Intra-State supplies to registered persons'
                    ELSE 'Intra-State supplies to unregistered persons'
                    END)
                WHEN p.state_id != cp.state_id
                THEN (CASE WHEN p.vat IS NOT NULL
                    THEN 'Inter-State supplies to registered persons'
                    ELSE 'Inter-State supplies to unregistered persons'
                    END)
            END) AS out_supply_type,
            (CASE WHEN p.state_id = cp.state_id
                THEN 'Intra-State supplies'
                WHEN p.state_id != cp.state_id
                THEN 'Inter-State supplies'
            END) AS in_supply_type,

            (CASE WHEN (
                SELECT MAX(account_tax_id) FROM account_move_line_account_tax_rel
                    JOIN account_tax at ON at.id = account_tax_id
                    WHERE account_move_line_id = aml.id AND at.tax_group_id IN
                     ((SELECT res_id FROM ir_model_data WHERE module='l10n_in' AND name='nil_rated_group'))
            ) IS NOT NULL
                THEN aml.balance * (CASE WHEN aj.type = 'sale' THEN -1 ELSE 1 END)
                ELSE 0
            END) AS nil_rated_amount,

            (CASE WHEN (
                SELECT MAX(account_tax_id) FROM account_move_line_account_tax_rel
                    JOIN account_tax at ON at.id = account_tax_id
                    WHERE account_move_line_id = aml.id AND at.tax_group_id IN
                     ((SELECT res_id FROM ir_model_data WHERE module='l10n_in' AND name='exempt_group'))
            ) IS NOT NULL
                THEN aml.balance * (CASE WHEN aj.type = 'sale' THEN -1 ELSE 1 END)
                ELSE 0
            END) AS exempted_amount,

            (CASE WHEN (
                SELECT MAX(account_tax_id) FROM account_move_line_account_tax_rel
                    WHERE account_move_line_id = aml.id
                ) IS NULL
                THEN aml.balance * (CASE WHEN aj.type = 'sale' THEN -1 ELSE 1 END)
                ELSE 0
            END) AS non_gst_supplies
        """
        return select_str

    def _from(self):
        from_str = """FROM account_move_line aml
            JOIN account_move am ON am.id = aml.move_id
            JOIN account_account aa ON aa.id = aml.account_id
            JOIN account_journal aj ON aj.id = am.journal_id
            JOIN res_company c ON c.id = aj.company_id
            LEFT JOIN res_partner cp ON cp.id = COALESCE(aj.l10n_in_gstin_partner_id, c.partner_id)
            LEFT JOIN res_partner p ON p.id = am.partner_id
            LEFT JOIN res_country pc ON pc.id = p.country_id
            WHERE aa.internal_type = 'other' and aml.tax_line_id IS NULL
        """
        return from_str

    def init(self):
        tools.drop_view_if_exists(self.env.cr, self._table)
        self._cr.execute("""CREATE OR REPLACE VIEW %s AS (%s %s)""" % (
            self._table, self._select(), self._from()))