"""
(C) 2014 by the GRASS Development Team
This program is free software under the GNU General Public
License (>=v2). Read the file COPYING that comes with GRASS
for details.

:authors: Soeren Gebbert and Thomas Leppelt
"""

import datetime
import os
import grass.temporal as tgis
from grass.gunittest.case import TestCase
from grass.gunittest.main import test


class TestTemporalVectorAlgebra(TestCase):
    @classmethod
    def setUpClass(cls):
        """Initiate the temporal GIS and set the region"""
        os.putenv("GRASS_OVERWRITE", "1")
        tgis.init(True)  # Raise on error instead of exit(1)
        cls.use_temp_region()
        cls.runModule("g.region", n=80.0, s=0.0, e=120.0, w=0.0, t=1.0, b=0.0, res=10.0)

        cls.runModule("v.random", quiet=True, npoints=20, seed=1, output="a1")
        cls.runModule("v.random", quiet=True, npoints=20, seed=1, output="a2")
        cls.runModule("v.random", quiet=True, npoints=20, seed=1, output="a3")
        cls.runModule("v.random", quiet=True, npoints=20, seed=1, output="a4")
        cls.runModule("v.random", quiet=True, npoints=20, seed=2, output="b1")
        cls.runModule("v.random", quiet=True, npoints=20, seed=2, output="b2")
        cls.runModule("v.random", quiet=True, npoints=20, seed=3, output="c1")
        cls.runModule("v.random", quiet=True, npoints=20, seed=4, output="d1")
        cls.runModule("v.random", quiet=True, npoints=20, seed=4, output="d2")
        cls.runModule("v.random", quiet=True, npoints=20, seed=4, output="d3")
        cls.runModule("v.random", quiet=True, npoints=20, seed=5, output="singletmap")
        cls.runModule("v.random", quiet=True, npoints=20, seed=6, output="singlemap")

        tgis.open_new_stds(
            name="A",
            type="stvds",
            temporaltype="absolute",
            title="A",
            descr="A",
            semantic="field",
        )
        tgis.open_new_stds(
            name="B",
            type="stvds",
            temporaltype="absolute",
            title="B",
            descr="B",
            semantic="field",
        )
        tgis.open_new_stds(
            name="C",
            type="stvds",
            temporaltype="absolute",
            title="B",
            descr="C",
            semantic="field",
        )
        tgis.open_new_stds(
            name="D",
            type="stvds",
            temporaltype="absolute",
            title="D",
            descr="D",
            semantic="field",
        )

        tgis.register_maps_in_space_time_dataset(
            type="vector",
            name="A",
            maps="a1,a2,a3,a4",
            start="2001-01-01",
            increment="1 day",
            interval=True,
        )
        tgis.register_maps_in_space_time_dataset(
            type="vector",
            name="B",
            maps="b1,b2",
            start="2001-01-01",
            increment="2 day",
            interval=True,
        )
        tgis.register_maps_in_space_time_dataset(
            type="vector",
            name="C",
            maps="c1",
            start="2001-01-02",
            increment="2 day",
            interval=True,
        )
        tgis.register_maps_in_space_time_dataset(
            type="vector",
            name="D",
            maps="d1,d2,d3",
            start="2001-01-03",
            increment="1 day",
            interval=True,
        )
        tgis.register_maps_in_space_time_dataset(
            type="vector",
            name=None,
            maps="singletmap",
            start="2001-01-03",
            end="2001-01-04",
        )

    def tearDown(self):
        self.runModule("t.remove", type="stvds", inputs="R", quiet=True)

    @classmethod
    def tearDownClass(cls):
        """Remove the temporary region"""
        cls.runModule(
            "t.remove", flags="df", inputs="A,B,C,D", type="stvds", quiet=True
        )
        cls.del_temp_region()

    def test_temporal_select(self):
        """Testing the temporal select operator."""

        self.assertModule("t.vect.algebra", expression="R = A : A", basename="r")

        D = tgis.open_old_stds("R", type="stvds")

        self.assertEqual(D.metadata.get_number_of_maps(), 4)
        self.assertEqual(D.metadata.get_number_of_points(), 80)
        self.assertEqual(D.metadata.get_number_of_areas(), 0)
        self.assertEqual(D.metadata.get_number_of_centroids(), 0)
        start, end = D.get_absolute_time()
        self.assertEqual(start, datetime.datetime(2001, 1, 1))
        self.assertEqual(end, datetime.datetime(2001, 1, 5))
        self.assertEqual(D.check_temporal_topology(), True)
        self.assertEqual(D.get_granularity(), "1 day")

    def test_temporal_select_operators(self):
        """Testing the temporal select operator. Including temporal relations."""

        self.assertModule(
            "t.vect.algebra", expression="R = A {:,during} C", basename="r"
        )

        D = tgis.open_old_stds("R", type="stvds")

        self.assertEqual(D.metadata.get_number_of_maps(), 2)
        self.assertEqual(D.metadata.get_number_of_points(), 40)
        self.assertEqual(D.metadata.get_number_of_areas(), 0)
        self.assertEqual(D.metadata.get_number_of_centroids(), 0)
        start, end = D.get_absolute_time()
        self.assertEqual(start, datetime.datetime(2001, 1, 2))
        self.assertEqual(end, datetime.datetime(2001, 1, 4))
        self.assertEqual(D.check_temporal_topology(), True)
        self.assertEqual(D.get_granularity(), "1 day")

    def test_temporal_buff_operators_1(self):
        """Testing the bufferoperator."""

        self.assertModule(
            "t.vect.algebra", expression="R = buff_p(A,0.5)", basename="r"
        )

        D = tgis.open_old_stds("R", type="stvds")

        self.assertEqual(D.metadata.get_number_of_maps(), 4)
        self.assertEqual(D.metadata.get_number_of_points(), 0)
        self.assertEqual(D.metadata.get_number_of_areas(), 80)
        self.assertEqual(D.metadata.get_number_of_centroids(), 80)
        start, end = D.get_absolute_time()
        self.assertEqual(start, datetime.datetime(2001, 1, 1))
        self.assertEqual(end, datetime.datetime(2001, 1, 5))
        self.assertEqual(D.check_temporal_topology(), True)
        self.assertEqual(D.get_granularity(), "1 day")

    def test_temporal_buff_operators_2(self):
        """Testing the bufferoperator."""

        self.assertModule(
            "t.vect.algebra", expression="R = buff_a(buff_p(A,1),10)", basename="r"
        )

        D = tgis.open_old_stds("R", type="stvds")

        self.assertEqual(D.metadata.get_number_of_maps(), 4)
        self.assertEqual(D.metadata.get_number_of_points(), 0)
        self.assertEqual(D.metadata.get_number_of_areas(), 20)
        self.assertEqual(D.metadata.get_number_of_centroids(), 20)
        start, end = D.get_absolute_time()
        self.assertEqual(start, datetime.datetime(2001, 1, 1))
        self.assertEqual(end, datetime.datetime(2001, 1, 5))
        self.assertEqual(D.check_temporal_topology(), True)
        self.assertEqual(D.get_granularity(), "1 day")

    def test_temporal_overlay_operators_1(self):
        """Testing the spatial overlay operator."""

        self.assertModule(
            "t.vect.algebra", expression="R = buff_p(A,2) & buff_p(D,2)", basename="r"
        )

        D = tgis.open_old_stds("R", type="stvds")

        self.assertEqual(D.metadata.get_number_of_maps(), 2)
        self.assertEqual(D.metadata.get_number_of_points(), 0)
        self.assertEqual(D.metadata.get_number_of_areas(), 6)
        self.assertEqual(D.metadata.get_number_of_centroids(), 6)
        start, end = D.get_absolute_time()
        self.assertEqual(start, datetime.datetime(2001, 1, 3))
        self.assertEqual(end, datetime.datetime(2001, 1, 5))
        self.assertEqual(D.check_temporal_topology(), True)
        self.assertEqual(D.get_granularity(), "1 day")

    def test_temporal_overlay_operators_2(self):
        """Testing the spatial overlay operator."""

        self.assertModule(
            "t.vect.algebra",
            expression="R = buff_p(A,1.5) {&,during,r} buff_p(B,1.5)",
            basename="r",
        )

        D = tgis.open_old_stds("R", type="stvds")

        self.assertEqual(D.metadata.get_number_of_maps(), 4)
        self.assertEqual(D.metadata.get_number_of_points(), 0)
        self.assertEqual(D.metadata.get_number_of_areas(), 8)
        self.assertEqual(D.metadata.get_number_of_centroids(), 8)
        start, end = D.get_absolute_time()
        self.assertEqual(start, datetime.datetime(2001, 1, 1))
        self.assertEqual(end, datetime.datetime(2001, 1, 5))
        self.assertEqual(D.check_temporal_topology(), False)
        self.assertEqual(D.get_granularity(), "2 days")

    def test_temporal_overlay_operators_3(self):
        """Testing the spatial overlay operator."""

        self.assertModule(
            "t.vect.algebra",
            expression="R = buff_p(A,2.5) {&,during,l} buff_p(C,2.5)",
            basename="r",
        )

        D = tgis.open_old_stds("R", type="stvds")

        self.assertEqual(D.metadata.get_number_of_maps(), 2)
        self.assertEqual(D.metadata.get_number_of_points(), 0)
        self.assertEqual(D.metadata.get_number_of_areas(), 8)
        self.assertEqual(D.metadata.get_number_of_centroids(), 8)
        start, end = D.get_absolute_time()
        self.assertEqual(start, datetime.datetime(2001, 1, 2))
        self.assertEqual(end, datetime.datetime(2001, 1, 4))
        self.assertEqual(D.check_temporal_topology(), True)
        self.assertEqual(D.get_granularity(), "1 day")


if __name__ == "__main__":
    test()
