import unittest

import pythoncom
import win32com.client
import win32com.server.util
import win32com.test.util
import winerror


# An object representing a list of numbers
class PythonSemanticClass:
    _public_methods_ = ["In"]  # DISPIDs are allocated.
    _dispid_to_func_ = {10: "Add", 11: "Remove"}  # DISPIDs specified by the object.

    def __init__(self):
        self.list = []

    def _NewEnum(self):
        return win32com.server.util.NewEnum(self.list)

    def _value_(self):
        # should return an array.
        return self.list

    def _Evaluate(self):
        # return the sum
        return sum(self.list)

    def In(self, value):
        return value in self.list

    def Add(self, value):
        self.list.append(value)

    def Remove(self, value):
        self.list.remove(value)


def DispExTest(ob):
    if not __debug__:
        print("WARNING: Tests dressed up as assertions are being skipped!")
    assert ob.GetDispID("Add", 0) == 10, "Policy did not honour the dispid"
    # Not impl
    #       assert ob.GetMemberName(10, 0)=="add", "Policy did not give me the correct function for the dispid"
    assert ob.GetDispID("Remove", 0) == 11, "Policy did not honour the dispid"
    assert ob.GetDispID("In", 0) == 1000, "Allocated dispid unexpected value"
    assert ob.GetDispID("_NewEnum", 0) == pythoncom.DISPID_NEWENUM, (
        "_NewEnum() got unexpected DISPID"
    )
    dispids = []
    dispid = -1
    while 1:
        try:
            dispid = ob.GetNextDispID(0, dispid)
            dispids.append(dispid)
        except pythoncom.com_error as xxx_todo_changeme:
            (hr, desc, exc, arg) = xxx_todo_changeme.args
            assert hr == winerror.S_FALSE, "Bad result at end of enum"
            break
    dispids.sort()
    assert dispids == [
        pythoncom.DISPID_EVALUATE,
        pythoncom.DISPID_NEWENUM,
        10,
        11,
        1000,
    ], f"Got back the wrong dispids: {dispids}"


def SemanticTest(ob):
    # First just check our object "generally" as expected.
    ob.Add(1)
    ob.Add(2)
    ob.Add(3)
    # invoke _value_
    assert ob() == (1, 2, 3), f"Bad result - got {ob()!r}"

    dispob = ob._oleobj_

    rc = dispob.Invoke(
        pythoncom.DISPID_EVALUATE,
        0,
        pythoncom.DISPATCH_METHOD | pythoncom.DISPATCH_PROPERTYGET,
        1,
    )
    assert rc == 6, f"Evaluate returned {rc}"


class Tester(win32com.test.util.TestCase):
    def setUp(self):
        debug = 0
        import win32com.server.dispatcher

        if debug:
            dispatcher = win32com.server.dispatcher.DefaultDebugDispatcher
        else:
            dispatcher = None
        disp = win32com.server.util.wrap(
            PythonSemanticClass(), useDispatcher=dispatcher
        )
        self.ob = win32com.client.Dispatch(disp)

    def tearDown(self):
        self.ob = None

    def testSemantics(self):
        SemanticTest(self.ob)

    def testIDispatchEx(self):
        dispexob = self.ob._oleobj_.QueryInterface(pythoncom.IID_IDispatchEx)
        DispExTest(dispexob)


if __name__ == "__main__":
    unittest.main()
