import pytest

from phasm.type3.entry import Type3Exception

from ..constants import ALL_FLOAT_TYPES, COMPLETE_INT_TYPES, TYPE_MAP
from ..helpers import Suite

@pytest.mark.integration_test
def test_module_constant_def():
    code_py = """
CONSTANT: (u8, u32, u64, ) = (250, 250000, 250000000, )

@exported
def testEntry() -> i32:
    return 0
"""

    result = Suite(code_py).run_code()

    assert 0 == result.returned_value

@pytest.mark.integration_test
@pytest.mark.parametrize('type_', ['u8', 'u32', 'u64', ])
def test_module_constant_1(type_):
    code_py = f"""
CONSTANT: ({type_}, ) = (65, )

@exported
def testEntry() -> {type_}:
    return CONSTANT[0]
"""

    result = Suite(code_py).run_code()

    assert 65 == result.returned_value

@pytest.mark.integration_test
def test_module_constant_6():
    code_py = """
CONSTANT: (u8, u8, u32, u32, u64, u64, ) = (11, 22, 3333, 4444, 555555, 666666, )

@exported
def testEntry() -> u32:
    return CONSTANT[2]
"""

    result = Suite(code_py).run_code()

    assert 3333 == result.returned_value

@pytest.mark.integration_test
def test_function_call_element_ok():
    code_py = """
CONSTANT: (u8, u32, u64, ) = (250, 250000, 250000000, )

@exported
def testEntry() -> u64:
    return helper(CONSTANT[2])

def helper(x: u64) -> u64:
    return x
"""

    result = Suite(code_py).run_code()

    assert 250000000 == result.returned_value

@pytest.mark.integration_test
def test_function_call_element_type_mismatch():
    code_py = """
CONSTANT: (u8, u32, u64, ) = (250, 250000, 250000000, )

@exported
def testEntry() -> u8:
    return helper(CONSTANT[2])

def helper(x: u8) -> u8:
    return x
"""

    with pytest.raises(Type3Exception, match=r'u8 must be u64 instead'):
        Suite(code_py).run_code()

@pytest.mark.integration_test
@pytest.mark.parametrize('type_', COMPLETE_INT_TYPES)
def test_tuple_simple_constructor_int(type_):
    code_py = f"""
@exported
def testEntry() -> {type_}:
    return helper((24, 57, 80, ))

def helper(vector: ({type_}, {type_}, {type_}, )) -> {type_}:
    return vector[0] + vector[1] + vector[2]
"""

    result = Suite(code_py).run_code()

    assert 161 == result.returned_value
    assert TYPE_MAP[type_] == type(result.returned_value)

@pytest.mark.integration_test
@pytest.mark.parametrize('type_', ALL_FLOAT_TYPES)
def test_tuple_simple_constructor_float(type_):
    code_py = f"""
@exported
def testEntry() -> {type_}:
    return helper((1.0, 2.0, 3.0, ))

def helper(v: ({type_}, {type_}, {type_}, )) -> {type_}:
    return sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2])
"""

    result = Suite(code_py).run_code()

    assert 3.74 < result.returned_value < 3.75

@pytest.mark.integration_test
@pytest.mark.skip('SIMD support is but a dream')
def test_tuple_i32x4():
    code_py = """
@exported
def testEntry() -> i32x4:
    return (51, 153, 204, 0, )
"""

    result = Suite(code_py).run_code()

    assert (1, 2, 3, 0) == result.returned_value

@pytest.mark.integration_test
def test_assign_to_tuple_with_tuple():
    code_py = """
CONSTANT: (u32, ) = 0
"""

    with pytest.raises(Type3Exception, match='Must be tuple'):
        Suite(code_py).run_code()

@pytest.mark.integration_test
def test_tuple_constant_too_few_values():
    code_py = """
CONSTANT: (u32, u8, u8, ) = (24, 57, )
"""

    with pytest.raises(Type3Exception, match='Tuple element count mismatch'):
        Suite(code_py).run_code()

@pytest.mark.integration_test
def test_tuple_constant_too_many_values():
    code_py = """
CONSTANT: (u32, u8, u8, ) = (24, 57, 1, 1, )
"""

    with pytest.raises(Type3Exception, match='Tuple element count mismatch'):
        Suite(code_py).run_code()

@pytest.mark.integration_test
def test_tuple_constant_type_mismatch():
    code_py = """
CONSTANT: (u32, u8, u8, ) = (24, 4000, 1, )
"""

    with pytest.raises(Type3Exception, match=r'Must fit in 1 byte\(s\)'):
        Suite(code_py).run_code()

@pytest.mark.integration_test
def test_tuple_must_use_literal_for_indexing():
    code_py = """
CONSTANT: u32 = 0

@exported
def testEntry(x: (u8, u32, u64)) -> u64:
    return x[CONSTANT]
"""

    with pytest.raises(Type3Exception, match='Must index with literal'):
        Suite(code_py).run_code()

@pytest.mark.integration_test
def test_tuple_must_use_integer_for_indexing():
    code_py = """
@exported
def testEntry(x: (u8, u32, u64)) -> u64:
    return x[0.0]
"""

    with pytest.raises(Type3Exception, match='Must index with integer literal'):
        Suite(code_py).run_code()