# Copyright 2010-2025 The pygit2 contributors
#
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# General Public License for more details.
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"""Tests for Blob objects."""

import io
from pathlib import Path
from threading import Event
from queue import Queue

import pytest

import pygit2
from pygit2.enums import ObjectType
from . import utils


BLOB_SHA = 'a520c24d85fbfc815d385957eed41406ca5a860b'
BLOB_CONTENT = """hello world
hola mundo
bonjour le monde
""".encode()
BLOB_NEW_CONTENT = b'foo bar\n'
BLOB_FILE_CONTENT = b'bye world\n'

BLOB_PATCH = r"""diff --git a/file b/file
index a520c24..95d09f2 100644
--- a/file
+++ b/file
@@ -1,3 +1 @@
-hello world
-hola mundo
-bonjour le monde
+hello world
\ No newline at end of file
"""

BLOB_PATCH_2 = """diff --git a/file b/file
index a520c24..d675fa4 100644
--- a/file
+++ b/file
@@ -1,3 +1 @@
-hello world
-hola mundo
-bonjour le monde
+foo bar
"""

BLOB_PATCH_DELETED = """diff --git a/file b/file
deleted file mode 100644
index a520c24..0000000
--- a/file
+++ /dev/null
@@ -1,3 +0,0 @@
-hello world
-hola mundo
-bonjour le monde
"""


def test_read_blob(testrepo):
    blob = testrepo[BLOB_SHA]
    assert blob.id == BLOB_SHA
    assert blob.id == BLOB_SHA
    assert isinstance(blob, pygit2.Blob)
    assert not blob.is_binary
    assert ObjectType.BLOB == blob.type
    assert BLOB_CONTENT == blob.data
    assert len(BLOB_CONTENT) == blob.size
    assert BLOB_CONTENT == blob.read_raw()


def test_create_blob(testrepo):
    blob_oid = testrepo.create_blob(BLOB_NEW_CONTENT)
    blob = testrepo[blob_oid]

    assert isinstance(blob, pygit2.Blob)
    assert ObjectType.BLOB == blob.type

    assert blob_oid == blob.id
    assert utils.gen_blob_sha1(BLOB_NEW_CONTENT) == blob_oid

    assert BLOB_NEW_CONTENT == blob.data
    assert len(BLOB_NEW_CONTENT) == blob.size
    assert BLOB_NEW_CONTENT == blob.read_raw()
    blob_buffer = memoryview(blob)
    assert len(BLOB_NEW_CONTENT) == len(blob_buffer)
    assert BLOB_NEW_CONTENT == blob_buffer

    def set_content():
        blob_buffer[:2] = b'hi'

    with pytest.raises(TypeError):
        set_content()


def test_create_blob_fromworkdir(testrepo):
    blob_oid = testrepo.create_blob_fromworkdir('bye.txt')
    blob = testrepo[blob_oid]

    assert isinstance(blob, pygit2.Blob)
    assert ObjectType.BLOB == blob.type

    assert blob_oid == blob.id
    assert utils.gen_blob_sha1(BLOB_FILE_CONTENT) == blob_oid

    assert BLOB_FILE_CONTENT == blob.data
    assert len(BLOB_FILE_CONTENT) == blob.size
    assert BLOB_FILE_CONTENT == blob.read_raw()


def test_create_blob_fromworkdir_aspath(testrepo):
    blob_oid = testrepo.create_blob_fromworkdir(Path('bye.txt'))
    blob = testrepo[blob_oid]

    assert isinstance(blob, pygit2.Blob)


def test_create_blob_outside_workdir(testrepo):
    with pytest.raises(KeyError):
        testrepo.create_blob_fromworkdir(__file__)


def test_create_blob_fromdisk(testrepo):
    blob_oid = testrepo.create_blob_fromdisk(__file__)
    blob = testrepo[blob_oid]

    assert isinstance(blob, pygit2.Blob)
    assert ObjectType.BLOB == blob.type


def test_create_blob_fromiobase(testrepo):
    with pytest.raises(TypeError):
        testrepo.create_blob_fromiobase('bad type')

    f = io.BytesIO(BLOB_CONTENT)
    blob_oid = testrepo.create_blob_fromiobase(f)
    blob = testrepo[blob_oid]

    assert isinstance(blob, pygit2.Blob)
    assert ObjectType.BLOB == blob.type

    assert blob_oid == blob.id
    assert BLOB_SHA == blob_oid


def test_diff_blob(testrepo):
    blob = testrepo[BLOB_SHA]
    old_blob = testrepo['3b18e512dba79e4c8300dd08aeb37f8e728b8dad']
    patch = blob.diff(old_blob, old_as_path='hello.txt')
    assert len(patch.hunks) == 1


def test_diff_blob_to_buffer(testrepo):
    blob = testrepo[BLOB_SHA]
    patch = blob.diff_to_buffer('hello world')
    assert len(patch.hunks) == 1


def test_diff_blob_to_buffer_patch_patch(testrepo):
    blob = testrepo[BLOB_SHA]
    patch = blob.diff_to_buffer('hello world')
    assert patch.text == BLOB_PATCH


def test_diff_blob_to_buffer_delete(testrepo):
    blob = testrepo[BLOB_SHA]
    patch = blob.diff_to_buffer(None)
    assert patch.text == BLOB_PATCH_DELETED


def test_diff_blob_create(testrepo):
    old = testrepo[testrepo.create_blob(BLOB_CONTENT)]
    new = testrepo[testrepo.create_blob(BLOB_NEW_CONTENT)]

    patch = old.diff(new)
    assert patch.text == BLOB_PATCH_2


def test_blob_from_repo(testrepo):
    blob = testrepo[BLOB_SHA]
    patch_one = blob.diff_to_buffer(None)

    blob = testrepo[BLOB_SHA]
    patch_two = blob.diff_to_buffer(None)

    assert patch_one.text == patch_two.text


def test_blob_write_to_queue(testrepo):
    queue = Queue()
    ready = Event()
    done = Event()
    blob = testrepo[BLOB_SHA]
    blob._write_to_queue(queue, ready, done)
    assert ready.wait()
    assert done.wait()
    chunks = []
    while not queue.empty():
        chunks.append(queue.get())
    assert BLOB_CONTENT == b''.join(chunks)


def test_blob_write_to_queue_filtered(testrepo):
    queue = Queue()
    ready = Event()
    done = Event()
    blob_oid = testrepo.create_blob_fromworkdir('bye.txt')
    blob = testrepo[blob_oid]
    blob._write_to_queue(queue, ready, done, as_path='bye.txt')
    assert ready.wait()
    assert done.wait()
    chunks = []
    while not queue.empty():
        chunks.append(queue.get())
    assert b'bye world\n' == b''.join(chunks)


def test_blobio(testrepo):
    blob_oid = testrepo.create_blob_fromworkdir('bye.txt')
    blob = testrepo[blob_oid]
    with pygit2.BlobIO(blob) as reader:
        assert b'bye world\n' == reader.read()
    assert not reader.raw._thread.is_alive()


def test_blobio_filtered(testrepo):
    blob_oid = testrepo.create_blob_fromworkdir('bye.txt')
    blob = testrepo[blob_oid]
    with pygit2.BlobIO(blob, as_path='bye.txt') as reader:
        assert b'bye world\n' == reader.read()
    assert not reader.raw._thread.is_alive()