from __future__ import unicode_literals

import datetime

from sqlalchemy import and_
from sqlalchemy import Column
from sqlalchemy import Date
from sqlalchemy import DateTime
from sqlalchemy import Float
from sqlalchemy import ForeignKey
from sqlalchemy import func
from sqlalchemy import Integer
from sqlalchemy import join
from sqlalchemy import outerjoin
from sqlalchemy import select
from sqlalchemy import Sequence
from sqlalchemy import Table
from sqlalchemy import Time
from sqlalchemy import Unicode
from sqlalchemy.testing import replay_fixture


"""Benchmark for SQLAlchemy.

An adaptation of Robert Brewers' ZooMark speed tests. """


ITERATIONS = 1


class ZooMarkTest(replay_fixture.ReplayFixtureTest):

    """Runs the ZooMark and squawks if method counts vary from the norm."""

    __requires__ = ("cpython",)
    __only_on__ = "postgresql+psycopg2"

    def _run_steps(self, ctx):
        with ctx():
            self._baseline_1a_populate()
        with ctx():
            self._baseline_2_insert()
        with ctx():
            self._baseline_3_properties()
        with ctx():
            self._baseline_4_expressions()
        with ctx():
            self._baseline_5_aggregates()
        with ctx():
            self._baseline_6_editing()
        with ctx():
            self._baseline_7_multiview()

    def setup_engine(self):
        self._baseline_1_create_tables()

    def teardown_engine(self):
        self._baseline_8_drop()

    def _baseline_1_create_tables(self):
        Table(
            "Zoo",
            self.metadata,
            Column(
                "ID",
                Integer,
                Sequence("zoo_id_seq"),
                primary_key=True,
                index=True,
            ),
            Column("Name", Unicode(255)),
            Column("Founded", Date),
            Column("Opens", Time),
            Column("LastEscape", DateTime),
            Column("Admission", Float),
        )
        Table(
            "Animal",
            self.metadata,
            Column("ID", Integer, Sequence("animal_id_seq"), primary_key=True),
            Column("ZooID", Integer, ForeignKey("Zoo.ID"), index=True),
            Column("Name", Unicode(100)),
            Column("Species", Unicode(100)),
            Column("Legs", Integer, default=4),
            Column("LastEscape", DateTime),
            Column("Lifespan", Float(4)),
            Column("MotherID", Integer, ForeignKey("Animal.ID")),
            Column("PreferredFoodID", Integer),
            Column("AlternateFoodID", Integer),
        )
        self.metadata.create_all()

    def _baseline_1a_populate(self):
        Zoo = self.metadata.tables["Zoo"]
        Animal = self.metadata.tables["Animal"]
        engine = self.metadata.bind
        wap = engine.execute(
            Zoo.insert(),
            Name="Wild Animal Park",
            Founded=datetime.date(2000, 1, 1),
            Opens=datetime.time(8, 15, 59),
            LastEscape=datetime.datetime(2004, 7, 29, 5, 6, 7),
            Admission=4.95,
        ).inserted_primary_key[0]
        sdz = engine.execute(
            Zoo.insert(),
            Name="San Diego Zoo",
            Founded=datetime.date(1935, 9, 13),
            Opens=datetime.time(9, 0, 0),
            Admission=0,
        ).inserted_primary_key[0]
        engine.execute(
            Zoo.insert(inline=True),
            Name="Montr\xe9al Biod\xf4me",
            Founded=datetime.date(1992, 6, 19),
            Opens=datetime.time(9, 0, 0),
            Admission=11.75,
        )
        seaworld = engine.execute(
            Zoo.insert(), Name="Sea_World", Admission=60
        ).inserted_primary_key[0]

        # Let's add a crazy futuristic Zoo to test large date values.

        engine.execute(
            Zoo.insert(),
            Name="Luna Park",
            Founded=datetime.date(2072, 7, 17),
            Opens=datetime.time(0, 0, 0),
            Admission=134.95,
        ).inserted_primary_key[0]

        # Animals

        leopardid = engine.execute(
            Animal.insert(), Species="Leopard", Lifespan=73.5
        ).inserted_primary_key[0]
        engine.execute(
            Animal.update(Animal.c.ID == leopardid),
            ZooID=wap,
            LastEscape=datetime.datetime(2004, 12, 21, 8, 15, 0, 999907),
        )
        engine.execute(
            Animal.insert(), Species="Lion", ZooID=wap
        ).inserted_primary_key[0]

        engine.execute(Animal.insert(), Species="Slug", Legs=1, Lifespan=0.75)
        engine.execute(
            Animal.insert(), Species="Tiger", ZooID=sdz
        ).inserted_primary_key[0]

        # Override Legs.default with itself just to make sure it works.

        engine.execute(Animal.insert(inline=True), Species="Bear", Legs=4)
        engine.execute(
            Animal.insert(inline=True),
            Species="Ostrich",
            Legs=2,
            Lifespan=103.2,
        )
        engine.execute(
            Animal.insert(inline=True), Species="Centipede", Legs=100
        )
        engine.execute(
            Animal.insert(), Species="Emperor Penguin", Legs=2, ZooID=seaworld
        ).inserted_primary_key[0]
        engine.execute(
            Animal.insert(), Species="Adelie Penguin", Legs=2, ZooID=seaworld
        ).inserted_primary_key[0]
        engine.execute(
            Animal.insert(inline=True),
            Species="Millipede",
            Legs=1000000,
            ZooID=sdz,
        )

        # Add a mother and child to test relationships

        bai_yun = engine.execute(
            Animal.insert(), Species="Ape", Name="Bai Yun", Legs=2
        ).inserted_primary_key[0]
        engine.execute(
            Animal.insert(inline=True),
            Species="Ape",
            Name="Hua Mei",
            Legs=2,
            MotherID=bai_yun,
        )

    def _baseline_2_insert(self):
        Animal = self.metadata.tables["Animal"]
        i = Animal.insert(inline=True)
        for x in range(ITERATIONS):
            i.execute(Species="Tick", Name="Tick %d" % x, Legs=8)

    def _baseline_3_properties(self):
        Zoo = self.metadata.tables["Zoo"]
        Animal = self.metadata.tables["Animal"]
        engine = self.metadata.bind

        def fullobject(select):
            """Iterate over the full result row."""

            return list(engine.execute(select).first())

        for x in range(ITERATIONS):

            # Zoos

            fullobject(Zoo.select(Zoo.c.Name == "Wild Animal Park"))
            fullobject(Zoo.select(Zoo.c.Founded == datetime.date(1935, 9, 13)))
            fullobject(Zoo.select(Zoo.c.Name == "Montr\xe9al Biod\xf4me"))
            fullobject(Zoo.select(Zoo.c.Admission == float(60)))

            # Animals

            fullobject(Animal.select(Animal.c.Species == "Leopard"))
            fullobject(Animal.select(Animal.c.Species == "Ostrich"))
            fullobject(Animal.select(Animal.c.Legs == 1000000))
            fullobject(Animal.select(Animal.c.Species == "Tick"))

    def _baseline_4_expressions(self):
        Zoo = self.metadata.tables["Zoo"]
        Animal = self.metadata.tables["Animal"]
        engine = self.metadata.bind

        def fulltable(select):
            """Iterate over the full result table."""

            return [list(row) for row in engine.execute(select).fetchall()]

        for x in range(ITERATIONS):
            assert len(fulltable(Zoo.select())) == 5
            assert len(fulltable(Animal.select())) == ITERATIONS + 12
            assert len(fulltable(Animal.select(Animal.c.Legs == 4))) == 4
            assert len(fulltable(Animal.select(Animal.c.Legs == 2))) == 5
            assert (
                len(
                    fulltable(
                        Animal.select(
                            and_(Animal.c.Legs >= 2, Animal.c.Legs < 20)
                        )
                    )
                )
                == ITERATIONS + 9
            )
            assert len(fulltable(Animal.select(Animal.c.Legs > 10))) == 2
            assert len(fulltable(Animal.select(Animal.c.Lifespan > 70))) == 2
            assert (
                len(fulltable(Animal.select(Animal.c.Species.startswith("L"))))
                == 2
            )
            assert (
                len(
                    fulltable(Animal.select(Animal.c.Species.endswith("pede")))
                )
                == 2
            )
            assert (
                len(fulltable(Animal.select(Animal.c.LastEscape != None))) == 1
            )  # noqa
            assert (
                len(fulltable(Animal.select(None == Animal.c.LastEscape)))
                == ITERATIONS + 11
            )  # noqa

            # In operator (containedby)

            assert (
                len(fulltable(Animal.select(Animal.c.Species.like("%pede%"))))
                == 2
            )
            assert (
                len(
                    fulltable(
                        Animal.select(
                            Animal.c.Species.in_(["Lion", "Tiger", "Bear"])
                        )
                    )
                )
                == 3
            )

            # Try In with cell references
            class thing(object):
                pass

            pet, pet2 = thing(), thing()
            pet.Name, pet2.Name = "Slug", "Ostrich"
            assert (
                len(
                    fulltable(
                        Animal.select(
                            Animal.c.Species.in_([pet.Name, pet2.Name])
                        )
                    )
                )
                == 2
            )

            # logic and other functions

            assert (
                len(fulltable(Animal.select(Animal.c.Species.like("Slug"))))
                == 1
            )
            assert (
                len(fulltable(Animal.select(Animal.c.Species.like("%pede%"))))
                == 2
            )
            name = "Lion"
            assert (
                len(
                    fulltable(
                        Animal.select(
                            func.length(Animal.c.Species) == len(name)
                        )
                    )
                )
                == ITERATIONS + 3
            )
            assert (
                len(fulltable(Animal.select(Animal.c.Species.like("%i%"))))
                == ITERATIONS + 7
            )

            # Test now(), today(), year(), month(), day()

            assert (
                len(
                    fulltable(
                        Zoo.select(
                            and_(
                                Zoo.c.Founded != None,  # noqa
                                Zoo.c.Founded
                                < func.current_timestamp(_type=Date),
                            )
                        )
                    )
                )
                == 3
            )
            assert (
                len(
                    fulltable(
                        Animal.select(
                            Animal.c.LastEscape
                            == func.current_timestamp(_type=Date)
                        )
                    )
                )
                == 0
            )
            assert (
                len(
                    fulltable(
                        Animal.select(
                            func.date_part("year", Animal.c.LastEscape) == 2004
                        )
                    )
                )
                == 1
            )
            assert (
                len(
                    fulltable(
                        Animal.select(
                            func.date_part("month", Animal.c.LastEscape) == 12
                        )
                    )
                )
                == 1
            )
            assert (
                len(
                    fulltable(
                        Animal.select(
                            func.date_part("day", Animal.c.LastEscape) == 21
                        )
                    )
                )
                == 1
            )

    def _baseline_5_aggregates(self):
        Animal = self.metadata.tables["Animal"]
        Zoo = self.metadata.tables["Zoo"]
        engine = self.metadata.bind

        for x in range(ITERATIONS):

            # views

            view = engine.execute(select([Animal.c.Legs])).fetchall()
            legs = sorted([x[0] for x in view])
            expected = {
                "Leopard": 73.5,
                "Slug": 0.75,
                "Tiger": None,
                "Lion": None,
                "Bear": None,
                "Ostrich": 103.2,
                "Centipede": None,
                "Emperor Penguin": None,
                "Adelie Penguin": None,
                "Millipede": None,
                "Ape": None,
                "Tick": None,
            }
            for species, lifespan in engine.execute(
                select([Animal.c.Species, Animal.c.Lifespan])
            ).fetchall():
                assert lifespan == expected[species]
            expected = ["Montr\xe9al Biod\xf4me", "Wild Animal Park"]
            e = select(
                [Zoo.c.Name],
                and_(
                    Zoo.c.Founded != None,  # noqa
                    Zoo.c.Founded <= func.current_timestamp(),
                    Zoo.c.Founded >= datetime.date(1990, 1, 1),
                ),
            )
            values = [val[0] for val in engine.execute(e).fetchall()]
            assert set(values) == set(expected)

            # distinct

            legs = [
                x[0]
                for x in engine.execute(
                    select([Animal.c.Legs], distinct=True)
                ).fetchall()
            ]
            legs.sort()

    def _baseline_6_editing(self):
        Zoo = self.metadata.tables["Zoo"]
        engine = self.metadata.bind
        for x in range(ITERATIONS):

            # Edit

            SDZ = engine.execute(
                Zoo.select(Zoo.c.Name == "San Diego Zoo")
            ).first()
            engine.execute(
                Zoo.update(Zoo.c.ID == SDZ["ID"]),
                Name="The San Diego Zoo",
                Founded=datetime.date(1900, 1, 1),
                Opens=datetime.time(7, 30, 0),
                Admission="35.00",
            )

            # Test edits

            SDZ = engine.execute(
                Zoo.select(Zoo.c.Name == "The San Diego Zoo")
            ).first()
            assert SDZ["Founded"] == datetime.date(1900, 1, 1), SDZ["Founded"]

            # Change it back

            engine.execute(
                Zoo.update(Zoo.c.ID == SDZ["ID"]),
                Name="San Diego Zoo",
                Founded=datetime.date(1935, 9, 13),
                Opens=datetime.time(9, 0, 0),
                Admission="0",
            )

            # Test re-edits

            SDZ = engine.execute(
                Zoo.select(Zoo.c.Name == "San Diego Zoo")
            ).first()
            assert SDZ["Founded"] == datetime.date(1935, 9, 13)

    def _baseline_7_multiview(self):
        Zoo = self.metadata.tables["Zoo"]
        Animal = self.metadata.tables["Animal"]
        engine = self.metadata.bind

        def fulltable(select):
            """Iterate over the full result table."""

            return [list(row) for row in engine.execute(select).fetchall()]

        for x in range(ITERATIONS):
            fulltable(
                select(
                    [Zoo.c.ID] + list(Animal.c),
                    Zoo.c.Name == "San Diego Zoo",
                    from_obj=[join(Zoo, Animal)],
                )
            )
            Zoo.select(Zoo.c.Name == "San Diego Zoo")
            fulltable(
                select(
                    [Zoo.c.ID, Animal.c.ID],
                    and_(
                        Zoo.c.Name == "San Diego Zoo",
                        Animal.c.Species == "Leopard",
                    ),
                    from_obj=[join(Zoo, Animal)],
                )
            )

            # Now try the same query with INNER, LEFT, and RIGHT JOINs.

            fulltable(
                select(
                    [Zoo.c.Name, Animal.c.Species],
                    from_obj=[join(Zoo, Animal)],
                )
            )
            fulltable(
                select(
                    [Zoo.c.Name, Animal.c.Species],
                    from_obj=[outerjoin(Zoo, Animal)],
                )
            )
            fulltable(
                select(
                    [Zoo.c.Name, Animal.c.Species],
                    from_obj=[outerjoin(Animal, Zoo)],
                )
            )

    def _baseline_8_drop(self):
        self.metadata.drop_all()
