import tempfile
from pathlib import Path

import tables as tb
from tables.tests import common


def WriteRead(filename, testTuple):
    if common.verbose:
        print('\n', '-=' * 30)
        print("Running test for object %s" % type(testTuple))

    # Create an instance of HDF5 Table
    fileh = tb.open_file(filename, mode="w")
    root = fileh.root
    try:
        # Create the array under root and name 'somearray'
        a = testTuple
        fileh.create_array(root, 'somearray', a, "Some array")
    finally:
        # Close the file
        fileh.close()

    # Re-open the file in read-only mode
    fileh = tb.open_file(filename, mode="r")
    root = fileh.root

    # Read the saved array
    try:
        b = root.somearray.read()
        # Compare them. They should be equal.
        if not a == b and common.verbose:
            print("Write and read lists/tuples differ!")
            print("Object written:", a)
            print("Object read:", b)

        # Check strictly the array equality
        assert a == b
    finally:
        # Close the file
        fileh.close()


class BasicTestCase(common.PyTablesTestCase):
    def setUp(self):
        super().setUp()
        self.h5fname = tempfile.mktemp(".h5")
        self.h5file = None

    def tearDown(self):
        if self.h5file is not None:
            self.h5file.close()
        if Path(self.h5fname).is_file():
            Path(self.h5fname).unlink()
        super().tearDown()

    def test00_char(self):
        """Data integrity during recovery (character types)"""

        a = self.charList
        WriteRead(self.h5fname, a)

    def test01_types(self):
        """Data integrity during recovery (numerical types)"""

        a = self.numericalList
        WriteRead(self.h5fname, a)


class Basic0DOneTestCase(BasicTestCase):
    # Scalar case
    title = "Rank-0 case 1"
    numericalList = 3
    charList = b"3"


class Basic0DTwoTestCase(BasicTestCase):
    # Scalar case
    title = "Rank-0 case 2"
    numericalList = 33.34
    charList = b"33"*500

# This does not work anymore because I've splitted the chunked arrays to happen
# mainly in EArray objects
# class Basic1DZeroTestCase(BasicTestCase):
#     title = "Rank-1 case 0"
#     numericalList = []
#     charList = []


class Basic1DOneTestCase(BasicTestCase):
    # 1D case
    title = "Rank-1 case 1"
    numericalList = [3]
    charList = [b"a"]


class Basic1DTwoTestCase(BasicTestCase):
    # 1D case
    title = "Rank-1 case 2"
    numericalList = [3.2, 4.2]
    charList = [b"aaa"]


class Basic2DTestCase(BasicTestCase):
    # 2D case
    title = "Rank-2 case 1"
    numericalList = [[1, 2]]*5
    charList = [[b"qq", b"zz"]]*5


class Basic10DTestCase(BasicTestCase):
    # 10D case
    title = "Rank-10 case 1"
    numericalList = [[[[[[[[[[1, 2], [3, 4]]]]]]]]]]*5
    # Dimensions greather than 6 in strings gives some warnings
    charList = [[[[[[[[[[b"a", b"b"], [b"qq", b"zz"]]]]]]]]]]*5


class ExceptionTestCase(common.PyTablesTestCase):
    def setUp(self):
        super().setUp()
        self.h5fname = tempfile.mktemp(".h5")
        self.h5file = None

    def tearDown(self):
        if self.h5file is not None:
            self.h5file.close()
        if Path(self.h5fname).is_file():
            Path(self.h5fname).unlink()
        super().tearDown()

    def test00_char(self):
        """Non suppported lists objects (character objects)"""

        if common.verbose:
            print('\n', '-=' * 30)
            print("Running test for %s" % (self.title))
        a = self.charList
        with self.assertRaises((ValueError, TypeError)):
            WriteRead(self.h5fname, a)

    def test01_types(self):
        """Non supported lists object (numerical types)"""

        a = self.numericalList
        with self.assertRaises((ValueError, TypeError)):
            WriteRead(self.h5fname, a)


class Basic1DFourTestCase(ExceptionTestCase):
    title = "Rank-1 case 4 (non-regular list)"
    numericalList = [3, [4, 5.2]]
    charList = [b"aaa", [b"bbb", b"ccc"]]


class GetItemTestCase(common.TempFileMixin, common.PyTablesTestCase):
    def test00_single(self):
        """Single element access (character types)"""

        # Create the array under root and name 'somearray'
        a = self.charList
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original first element:", a[0])
            print("Read first element:", arr[0])
        self.assertEqual(a[0], arr[0])

    def test01_single(self):
        """Single element access (numerical types)"""

        # Create the array under root and name 'somearray'
        a = self.numericalList
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original first element:", a[0])
            print("Read first element:", arr[0])
        self.assertEqual(a[0], arr[0])

    def test02_range(self):
        """Range element access (character types)"""

        # Create the array under root and name 'somearray'
        a = self.charListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original elements:", a[1:4])
            print("Read elements:", arr[1:4])
        self.assertEqual(a[1:4], arr[1:4])

    def test03_range(self):
        """Range element access (numerical types)"""

        # Create the array under root and name 'somearray'
        a = self.numericalListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original elements:", a[1:4])
            print("Read elements:", arr[1:4])
        self.assertEqual(a[1:4], arr[1:4])

    def test04_range(self):
        """Range element access, strided (character types)"""

        # Create the array under root and name 'somearray'
        a = self.charListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original elements:", a[1:4:2])
            print("Read elements:", arr[1:4:2])
        self.assertEqual(a[1:4:2], arr[1:4:2])

    def test05_range(self):
        """Range element access (numerical types)"""

        # Create the array under root and name 'somearray'
        a = self.numericalListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original elements:", a[1:4:2])
            print("Read elements:", arr[1:4:2])
        self.assertEqual(a[1:4:2], arr[1:4:2])

    def test06_negativeIndex(self):
        """Negative Index element access (character types)"""

        # Create the array under root and name 'somearray'
        a = self.charListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original last element:", a[-1])
            print("Read last element:", arr[-1])
        self.assertEqual(a[-1], arr[-1])

    def test07_negativeIndex(self):
        """Negative Index element access (numerical types)"""

        # Create the array under root and name 'somearray'
        a = self.numericalListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original before last element:", a[-2])
            print("Read before last element:", arr[-2])
        self.assertEqual(a[-2], arr[-2])

    def test08_negativeRange(self):
        """Negative range element access (character types)"""

        # Create the array under root and name 'somearray'
        a = self.charListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original last elements:", a[-4:-1])
            print("Read last elements:", arr[-4:-1])
        self.assertEqual(a[-4:-1], arr[-4:-1])

    def test09_negativeRange(self):
        """Negative range element access (numerical types)"""

        # Create the array under root and name 'somearray'
        a = self.numericalListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if common.verbose:
            print("Original last elements:", a[-4:-1])
            print("Read last elements:", arr[-4:-1])
        self.assertEqual(a[-4:-1], arr[-4:-1])


class GI1ListTestCase(GetItemTestCase):
    title = "Rank-1 case 1 (lists)"
    numericalList = [3]
    numericalListME = [3, 2, 1, 0, 4, 5, 6]
    charList = [b"3"]
    charListME = [b"321", b"221", b"121", b"021", b"421", b"521", b"621"]


class GI2ListTestCase(GetItemTestCase):
    # A more complex example
    title = "Rank-1,2 case 2 (lists)"
    numericalList = [3, 4]
    numericalListME = [[3, 2, 1, 0, 4, 5, 6],
                       [2, 1, 0, 4, 5, 6, 7],
                       [4, 3, 2, 1, 0, 4, 5],
                       [3, 2, 1, 0, 4, 5, 6],
                       [3, 2, 1, 0, 4, 5, 6]]

    charList = [b"a", b"b"]
    charListME = [
        [b"321", b"221", b"121", b"021", b"421", b"521", b"621"],
        [b"21", b"21", b"11", b"02", b"42", b"21", b"61"],
        [b"31", b"21", b"12", b"21", b"41", b"51", b"621"],
        [b"321", b"221", b"121", b"021", b"421", b"521", b"621"],
        [b"3241", b"2321", b"13216", b"0621", b"4421", b"5421", b"a621"],
        [b"a321", b"s221", b"d121", b"g021", b"b421", b"5vvv21", b"6zxzxs21"],
    ]


class GeneratorTestCase(common.TempFileMixin, common.PyTablesTestCase):
    def test00a_single(self):
        """Testing generator access to Arrays, single elements (char)"""

        # Create the array under root and name 'somearray'
        a = self.charList
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        ga = [i for i in a]
        garr = [i for i in arr]
        if common.verbose:
            print("Result of original iterator:", ga)
            print("Result of read generator:", garr)
        self.assertEqual(ga, garr)

    def test00b_me(self):
        """Testing generator access to Arrays, multiple elements (char)"""

        # Create the array under root and name 'somearray'
        a = self.charListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if isinstance(a[0], tuple):
            ga = [list(i) for i in a]
        else:
            ga = [i for i in a]
        garr = [i for i in arr]
        if common.verbose:
            print("Result of original iterator:", ga)
            print("Result of read generator:", garr)
        self.assertEqual(ga, garr)

    def test01a_single(self):
        """Testing generator access to Arrays, single elements (numeric)"""

        # Create the array under root and name 'somearray'
        a = self.numericalList
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        ga = [i for i in a]
        garr = [i for i in arr]
        if common.verbose:
            print("Result of original iterator:", ga)
            print("Result of read generator:", garr)
        self.assertEqual(ga, garr)

    def test01b_me(self):
        """Testing generator access to Arrays, multiple elements (numeric)"""

        # Create the array under root and name 'somearray'
        a = self.numericalListME
        arr = self.h5file.create_array(self.h5file.root, 'somearray', a,
                                       "Some array")

        # Get and compare an element
        if isinstance(a[0], tuple):
            ga = [list(i) for i in a]
        else:
            ga = [i for i in a]
        garr = [i for i in arr]
        if common.verbose:
            print("Result of original iterator:", ga)
            print("Result of read generator:", garr)
        self.assertEqual(ga, garr)


class GE1ListTestCase(GeneratorTestCase):
    # Scalar case
    title = "Rank-1 case 1 (lists)"
    numericalList = [3]
    numericalListME = [3, 2, 1, 0, 4, 5, 6]
    charList = [b"3"]
    charListME = [b"321", b"221", b"121", b"021", b"421", b"521", b"621"]


class GE2ListTestCase(GeneratorTestCase):
    # Scalar case
    title = "Rank-1,2 case 2 (lists)"
    numericalList = [3, 4]
    numericalListME = [[3, 2, 1, 0, 4, 5, 6],
                       [2, 1, 0, 4, 5, 6, 7],
                       [4, 3, 2, 1, 0, 4, 5],
                       [3, 2, 1, 0, 4, 5, 6],
                       [3, 2, 1, 0, 4, 5, 6]]

    charList = [b"a", b"b"]
    charListME = [
        [b"321", b"221", b"121", b"021", b"421", b"521", b"621"],
        [b"21", b"21", b"11", b"02", b"42", b"21", b"61"],
        [b"31", b"21", b"12", b"21", b"41", b"51", b"621"],
        [b"321", b"221", b"121", b"021", b"421", b"521", b"621"],
        [b"3241", b"2321", b"13216", b"0621", b"4421", b"5421", b"a621"],
        [b"a321", b"s221", b"d121", b"g021", b"b421", b"5vvv21", b"6zxzxs21"],
    ]


def suite():
    theSuite = common.unittest.TestSuite()
    niter = 1

    for i in range(niter):
        theSuite.addTest(common.unittest.makeSuite(Basic0DOneTestCase))
        theSuite.addTest(common.unittest.makeSuite(Basic0DTwoTestCase))
        # theSuite.addTest(unittest.makeSuite(Basic1DZeroTestCase))
        theSuite.addTest(common.unittest.makeSuite(Basic1DOneTestCase))
        theSuite.addTest(common.unittest.makeSuite(Basic1DTwoTestCase))
        theSuite.addTest(common.unittest.makeSuite(Basic1DFourTestCase))
        theSuite.addTest(common.unittest.makeSuite(Basic2DTestCase))
        theSuite.addTest(common.unittest.makeSuite(Basic10DTestCase))
        theSuite.addTest(common.unittest.makeSuite(GI1ListTestCase))
        theSuite.addTest(common.unittest.makeSuite(GI2ListTestCase))
        theSuite.addTest(common.unittest.makeSuite(GE1ListTestCase))
        theSuite.addTest(common.unittest.makeSuite(GE2ListTestCase))

    return theSuite


if __name__ == '__main__':
    import sys
    common.parse_argv(sys.argv)
    common.print_versions()
    common.unittest.main(defaultTest='suite')