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"""Tests for Blame objects."""

import pytest

from pygit2 import Signature, Oid
from pygit2.enums import BlameFlag


PATH = 'hello.txt'

HUNKS = [
    (
        Oid(hex='acecd5ea2924a4b900e7e149496e1f4b57976e51'),
        1,
        Signature(
            'J. David Ibañez', 'jdavid@itaapy.com', 1297179898, 60, encoding='utf-8'
        ),
        True,
    ),
    (
        Oid(hex='6aaa262e655dd54252e5813c8e5acd7780ed097d'),
        2,
        Signature(
            'J. David Ibañez', 'jdavid@itaapy.com', 1297696877, 60, encoding='utf-8'
        ),
        False,
    ),
    (
        Oid(hex='4ec4389a8068641da2d6578db0419484972284c8'),
        3,
        Signature(
            'J. David Ibañez', 'jdavid@itaapy.com', 1297696908, 60, encoding='utf-8'
        ),
        False,
    ),
]


def test_blame_index(testrepo):
    blame = testrepo.blame(PATH)

    assert len(blame) == 3

    for i, hunk in enumerate(blame):
        assert hunk.lines_in_hunk == 1
        assert HUNKS[i][0] == hunk.final_commit_id
        assert HUNKS[i][1] == hunk.final_start_line_number
        assert HUNKS[i][2] == hunk.final_committer
        assert HUNKS[i][0] == hunk.orig_commit_id
        assert hunk.orig_path == PATH
        assert HUNKS[i][1] == hunk.orig_start_line_number
        assert HUNKS[i][2] == hunk.orig_committer
        assert HUNKS[i][3] == hunk.boundary


def test_blame_flags(blameflagsrepo):
    blame = blameflagsrepo.blame(PATH, flags=BlameFlag.IGNORE_WHITESPACE)

    assert len(blame) == 3

    for i, hunk in enumerate(blame):
        assert hunk.lines_in_hunk == 1
        assert HUNKS[i][0] == hunk.final_commit_id
        assert HUNKS[i][1] == hunk.final_start_line_number
        assert HUNKS[i][2] == hunk.final_committer
        assert HUNKS[i][0] == hunk.orig_commit_id
        assert hunk.orig_path == PATH
        assert HUNKS[i][1] == hunk.orig_start_line_number
        assert HUNKS[i][2] == hunk.orig_committer
        assert HUNKS[i][3] == hunk.boundary


def test_blame_with_invalid_index(testrepo):
    blame = testrepo.blame(PATH)

    def test():
        blame[100000]
        blame[-1]

    with pytest.raises(IndexError):
        test()


def test_blame_for_line(testrepo):
    blame = testrepo.blame(PATH)

    for i, line in zip(range(0, 2), range(1, 3)):
        hunk = blame.for_line(line)

        assert hunk.lines_in_hunk == 1
        assert HUNKS[i][0] == hunk.final_commit_id
        assert HUNKS[i][1] == hunk.final_start_line_number
        assert HUNKS[i][2] == hunk.final_committer
        assert HUNKS[i][0] == hunk.orig_commit_id
        assert hunk.orig_path == PATH
        assert HUNKS[i][1] == hunk.orig_start_line_number
        assert HUNKS[i][2] == hunk.orig_committer
        assert HUNKS[i][3] == hunk.boundary


def test_blame_with_invalid_line(testrepo):
    blame = testrepo.blame(PATH)

    def test():
        blame.for_line(0)
        blame.for_line(100000)
        blame.for_line(-1)

    with pytest.raises(IndexError):
        test()


def test_blame_newest(testrepo):
    revs = [
        ('master^2', 3),
        ('master^2^', 2),
        ('master^2^^', 1),
    ]

    for rev, num_commits in revs:
        commit = testrepo.revparse_single(rev)
        blame = testrepo.blame(PATH, newest_commit=commit.id)

        assert len(blame) == num_commits

        for i, hunk in enumerate(tuple(blame)[:num_commits]):
            assert hunk.lines_in_hunk == 1
            assert HUNKS[i][0] == hunk.final_commit_id
            assert HUNKS[i][1] == hunk.final_start_line_number
            assert HUNKS[i][2] == hunk.final_committer
            assert HUNKS[i][0] == hunk.orig_commit_id
            assert hunk.orig_path == PATH
            assert HUNKS[i][1] == hunk.orig_start_line_number
            assert HUNKS[i][2] == hunk.orig_committer
            assert HUNKS[i][3] == hunk.boundary