# Copyright 2016 ForgeFlow S.L.
# Copyright 2016 Serpent Consulting Services Pvt. Ltd.
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
from odoo.osv import expression
from odoo.tools.sql import SQL

from odoo.addons.base.tests.common import BaseCommon


class QueryGenerationCase(BaseCommon):
    @classmethod
    def setUpClass(self):
        super().setUpClass()
        self.ResPartner = self.env["res.partner"]
        self.TrgmIndex = self.env["trgm.index"]
        self.ResPartnerCategory = self.env["res.partner.category"]

    def test_fuzzy_where_generation(self):
        """Check the generation of the where clause."""
        # the added fuzzy search operator should be available in the allowed
        # operators
        self.assertIn("%", expression.TERM_OPERATORS)
        self.assertEqual(SQL("%%"), expression.SQL_OPERATORS["%"])

        # create new query with fuzzy search operator
        query = self.ResPartner._where_calc([("name", "%", "test")], active_test=False)
        from_clause = query.from_clause.code
        where_clause = query.where_clause.code
        where_clause_params = query.where_clause.params

        # the % parameter has to be escaped (%%) for the string replation
        self.assertEqual(where_clause, """("res_partner"."name" %% %s)""")

        # test the right sql query statement creation
        # now there should be only one '%'
        complete_where = self.env.cr.mogrify(
            f"SELECT FROM {from_clause} WHERE {where_clause}",
            where_clause_params,
        )
        self.assertEqual(
            complete_where,
            b'SELECT FROM "res_partner" WHERE ' b'("res_partner"."name" % \'test\')',
        )

    def test_fuzzy_where_generation_translatable(self):
        """Check the generation of the where clause for translatable fields."""
        # create new query with fuzzy search operator
        query = self.ResPartnerCategory.with_context(lang="en_US")._where_calc(
            [("name", "%", "Goschaeftlic")], active_test=False
        )
        from_clause = query.from_clause.code
        where_clause = query.where_clause.code
        where_clause_params = query.where_clause.params

        # the % parameter has to be escaped (%%) for the string replation
        self.assertIn(
            """("res_partner_category"."name"->>%s %% %s)""",
            where_clause,
        )
        self.assertEqual(
            ["en_US", "Goschaeftlic"],
            where_clause_params,
        )

        complete_where = self.env.cr.mogrify(
            f"SELECT FROM {from_clause} WHERE {where_clause}",
            where_clause_params,
        )

        self.assertIn(
            b'SELECT FROM "res_partner_category" WHERE ("res_partner_category"."name"->>\'en_US\' % \'Goschaeftlic\')',  # noqa
            complete_where,
        )

    def test_fuzzy_search(self):
        """Test the fuzzy search itself."""
        if self.TrgmIndex._trgm_extension_exists() != "installed":
            return

        if not self.TrgmIndex.index_exists("res.partner", "name"):
            field_partner_name = self.env.ref("base.field_res_partner__name")
            self.TrgmIndex.create(
                {"field_id": field_partner_name.id, "index_type": "gin"}
            )

        partner1, partner2, partner3 = self.ResPartner.create(
            [{"name": "John Smith"}, {"name": "John Smizz"}, {"name": "Linus Torvalds"}]
        )

        res = self.ResPartner.search([("name", "%", "Jon Smith")])
        self.assertIn(partner1.id, res.ids)
        self.assertIn(partner2.id, res.ids)
        self.assertNotIn(partner3.id, res.ids)

        res = self.ResPartner.search([("name", "%", "Smith John")])
        self.assertIn(partner1.id, res.ids)
        self.assertIn(partner2.id, res.ids)
        self.assertNotIn(partner3.id, res.ids)