import json
import os

import pytest

from pipenv.utils.shell import temp_environ


@pytest.mark.lock
@pytest.mark.sync
def test_sync_error_without_lockfile(pipenv_instance_pypi):
    with pipenv_instance_pypi(chdir=True) as p:
        with open(p.pipfile_path, 'w') as f:
            f.write("""
[packages]
            """.strip())

        c = p.pipenv('sync')
        assert c.returncode != 0
        assert 'Pipfile.lock not found!' in c.stderr


@pytest.mark.sync
@pytest.mark.lock
def test_mirror_lock_sync(pipenv_instance_private_pypi):
    with temp_environ(), pipenv_instance_private_pypi(chdir=True) as p:
        mirror_url = os.environ.get('PIPENV_TEST_INDEX')
        assert 'pypi.org' not in mirror_url
        with open(p.pipfile_path, 'w') as f:
            f.write("""
[[source]]
name = "pypi"
url = "https://pypi.org/simple"
verify_ssl = true

[packages]
six = "*"
            """.strip())
        c = p.pipenv(f'lock --pypi-mirror {mirror_url}')
        assert c.returncode == 0
        c = p.pipenv(f'sync --pypi-mirror {mirror_url}')
        assert c.returncode == 0


@pytest.mark.sync
@pytest.mark.lock
def test_sync_should_not_lock(pipenv_instance_pypi):
    """Sync should not touch the lock file, even if Pipfile is changed.
    """
    with pipenv_instance_pypi(chdir=True) as p:
        with open(p.pipfile_path, 'w') as f:
            f.write("""
[packages]
            """.strip())

        # Perform initial lock.
        c = p.pipenv('lock')
        assert c.returncode == 0
        lockfile_content = p.lockfile
        assert lockfile_content

        # Make sure sync does not trigger lockfile update.
        with open(p.pipfile_path, 'w') as f:
            f.write("""
[packages]
six = "*"
            """.strip())
        c = p.pipenv('sync')
        assert c.returncode == 0
        assert lockfile_content == p.lockfile


@pytest.mark.sync
@pytest.mark.lock
def test_sync_sequential_detect_errors(pipenv_instance_private_pypi):
    with pipenv_instance_private_pypi() as p:
        with open(p.pipfile_path, 'w') as f:
            contents = """
[packages]
requests = "*"
        """.strip()
            f.write(contents)

        c = p.pipenv('lock')
        assert c.returncode == 0

        # Force hash mismatch when installing `requests`
        lock = p.lockfile
        lock['default']['requests']['hashes'] = ['sha256:' + '0' * 64]
        with open(p.lockfile_path, 'w') as f:
            json.dump(lock, f)

        c = p.pipenv('sync --sequential')
        assert c.returncode != 0


@pytest.mark.sync
def test_sync_consider_pip_target(pipenv_instance_pypi):
    """
    """
    with pipenv_instance_pypi(chdir=True) as p:
        with open(p.pipfile_path, 'w') as f:
            f.write("""
[packages]
six = "*"
            """.strip())

        # Perform initial lock.
        c = p.pipenv('lock')
        assert c.returncode == 0
        lockfile_content = p.lockfile
        assert lockfile_content
        c = p.pipenv('sync')
        assert c.returncode == 0

        pip_target_dir = 'target_dir'
        os.environ['PIP_TARGET'] = pip_target_dir
        c = p.pipenv('sync')
        assert c.returncode == 0
        assert 'six.py' in os.listdir(os.path.join(p.path, pip_target_dir))
        os.environ.pop('PIP_TARGET')