# Copyright 2020-2024 The pygit2 contributors
#
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# it under the terms of the GNU General Public License, version 2,
# as published by the Free Software Foundation.
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"""Tests for revision parsing."""

from pygit2 import InvalidSpecError
from pygit2.enums import RevSpecFlag
from pytest import raises

HEAD_SHA = '2be5719152d4f82c7302b1c0932d8e5f0a4a0e98'
PARENT_SHA = '5ebeeebb320790caf276b9fc8b24546d63316533'  # HEAD^


def test_revparse_single(testrepo):
    assert testrepo.revparse_single('HEAD').id == HEAD_SHA
    assert testrepo.revparse_single('HEAD^').id == PARENT_SHA
    o = testrepo.revparse_single('@{-1}')
    assert o.id == '5470a671a80ac3789f1a6a8cefbcf43ce7af0563'


def test_revparse_ext(testrepo):
    o, r = testrepo.revparse_ext('master')
    assert o.id == HEAD_SHA
    assert r == testrepo.references['refs/heads/master']

    o, r = testrepo.revparse_ext('HEAD^')
    assert o.id == PARENT_SHA
    assert r is None

    o, r = testrepo.revparse_ext('i18n')
    assert str(o.id).startswith('5470a67')
    assert r == testrepo.references['refs/heads/i18n']


def test_revparse_1(testrepo):
    s = testrepo.revparse('master')
    assert s.from_object.id == HEAD_SHA
    assert s.to_object is None
    assert s.flags == RevSpecFlag.SINGLE


def test_revparse_range_1(testrepo):
    s = testrepo.revparse('HEAD^1..acecd5e')
    assert s.from_object.id == PARENT_SHA
    assert str(s.to_object.id).startswith('acecd5e')
    assert s.flags == RevSpecFlag.RANGE


def test_revparse_range_2(testrepo):
    s = testrepo.revparse('HEAD...i18n')
    assert str(s.from_object.id).startswith('2be5719')
    assert str(s.to_object.id).startswith('5470a67')
    assert s.flags == RevSpecFlag.RANGE | RevSpecFlag.MERGE_BASE
    assert testrepo.merge_base(s.from_object.id, s.to_object.id) is not None


def test_revparse_range_errors(testrepo):
    with raises(KeyError):
        testrepo.revparse('nope..2be571915')

    with raises(InvalidSpecError):
        testrepo.revparse('master............2be571915')


def test_revparse_repr(testrepo):
    s = testrepo.revparse('HEAD...i18n')
    assert (
        repr(s)
        == '<pygit2.RevSpec{from=<pygit2.Object{commit:2be5719152d4f82c7302b1c0932d8e5f0a4a0e98}>,to=<pygit2.Object{commit:5470a671a80ac3789f1a6a8cefbcf43ce7af0563}>}>'
    )
