import os
import pytest
from shutil import copyfile
from click.testing import CliRunner
from deepdiff.commands import diff, patch, grep, extract
from conftest import FIXTURES_DIR
from deepdiff.helper import pypy3


@pytest.mark.skipif(pypy3, reason='clevercsv is not supported in pypy3')
class TestCommands:

    @pytest.mark.parametrize('name1, name2, expected_in_stdout, expected_exit_code', [
        ('t1.json', 't2.json', """dictionary_item_added": [\n    "root[0][\'key3\']""", 0),
        ('t1_corrupt.json', 't2.json', "Error when loading t1:", 1),
        ('t1.json', 't2_json.csv', '"old_value": "value2"', 0),
        ('t2_json.csv', 't1.json', '"old_value": "value3"', 0),
        ('t1.csv', 't2.csv', '"new_value": "James"', 0),
        ('t1.toml', 't2.toml', "10.0.0.2", 0),
        ('t1.pickle', 't2.pickle', '"new_value": 5,\n      "old_value": 1', 0),
        ('t1.yaml', 't2.yaml', '"new_value": 61,\n      "old_value": 65', 0),
    ])
    def test_diff_command(self, name1, name2, expected_in_stdout, expected_exit_code):
        t1 = os.path.join(FIXTURES_DIR, name1)
        t2 = os.path.join(FIXTURES_DIR, name2)

        runner = CliRunner()
        result = runner.invoke(diff, [t1, t2])
        assert result.exit_code == expected_exit_code, f"test_diff_command failed for {name1}, {name2}"
        assert expected_in_stdout in result.output, f"test_diff_command failed for {name1}, {name2}"

    def test_cli_cant_find_file(self):
        runner = CliRunner()
        result = runner.invoke(diff, ['phantom_file1', 'phantom_file2'])
        assert result.exit_code == 2
        assert "Path 'phantom_file1' does not exist" in result.output

    @pytest.mark.parametrize('t1, t2, args, expected_exit_code', [
        ('t1.json', 't2.json', {}, 0),
        ('t1_corrupt.json', 't2.json', {}, 1),
        ('t1.json', 't2_json.csv', {}, 0),
        ('t2_json.csv', 't1.json', {}, 0),
        ('t1.csv', 't2.csv', ["--ignore-order", "--report-repetition"], 0),
        ('t1.toml', 't2.toml', {}, 0),
        ('t1.pickle', 't2.pickle', {}, 0),
        ('t1.yaml', 't2.yaml', {}, 0),
    ])
    def test_deeppatch_command(self, t1, t2, args, expected_exit_code, tmp_path):
        t1_copy_path = os.path.join(tmp_path, t1)
        t1 = os.path.join(FIXTURES_DIR, t1)
        t2 = os.path.join(FIXTURES_DIR, t2)
        copyfile(t1, t1_copy_path)
        runner = CliRunner()
        delta_pickled = runner.invoke(diff, [t1, t2, '--create-patch', *args])
        assert delta_pickled.exit_code == expected_exit_code

        if expected_exit_code == 0:
            delta_path = os.path.join(tmp_path, 'delta.pickle')
            with open(delta_path, 'wb') as the_file:
                the_file.write(delta_pickled.stdout_bytes)

            runner = CliRunner()
            deeppatched = runner.invoke(patch, [t1_copy_path, delta_path])
            assert deeppatched.exit_code == expected_exit_code

            runner = CliRunner()
            final_diff = runner.invoke(diff, [t1_copy_path, t2, *args])
            assert final_diff.exit_code == expected_exit_code
            assert final_diff.output == '{}\n'

    def test_command_group_by(self):
        t1 = os.path.join(FIXTURES_DIR, 'c_t1.csv')
        t2 = os.path.join(FIXTURES_DIR, 'c_t2.csv')
        runner = CliRunner()
        diffed = runner.invoke(diff, [t1, t2, '--group-by', 'id'])
        assert 0 == diffed.exit_code
        assert 'values_changed' in diffed.output
        assert '"new_value": "Chicken"' in diffed.output

    def test_command_math_epsilon(self):
        t1 = os.path.join(FIXTURES_DIR, 'd_t1.yaml')
        t2 = os.path.join(FIXTURES_DIR, 'd_t2.yaml')
        runner = CliRunner()
        diffed = runner.invoke(diff, [t1, t2, '--math-epsilon', '0.1'])
        assert 0 == diffed.exit_code
        assert '{}\n' == diffed.output

        diffed2 = runner.invoke(diff, [t1, t2, '--math-epsilon', '0.001'])
        assert 0 == diffed2.exit_code
        assert '{\n  "values_changed": {\n    "root[2][2]": {\n      "new_value": 0.289,\n      "old_value": 0.288\n    }\n  }\n}\n' == diffed2.output

    def test_command_grep(self):
        path = os.path.join(FIXTURES_DIR, 'd_t1.yaml')
        runner = CliRunner()
        diffed = runner.invoke(grep, ['Sammy', path])
        assert 0 == diffed.exit_code
        assert "{'matched_values': ['root[2][0]']}\n" == diffed.output

    def test_command_err_grep1(self):
        path = os.path.join(FIXTURES_DIR, 'd_t1.yaml')
        runner = CliRunner()
        diffed = runner.invoke(grep, [path, 'Sammy'])
        assert "Path 'Sammy' does not exist" in diffed.output
        assert 2 == diffed.exit_code

    def test_command_err_grep2(self):
        path = os.path.join(FIXTURES_DIR, 'invalid_yaml.yaml')
        runner = CliRunner()
        diffed = runner.invoke(grep, ['invalid', path])
        assert "mapping keys are not allowed here" in diffed.output
        assert 1 == diffed.exit_code

    def test_command_extract(self):
        path = os.path.join(FIXTURES_DIR, 'd_t1.yaml')
        runner = CliRunner()
        diffed = runner.invoke(extract, ['root[2][2]', path])
        assert 0 == diffed.exit_code
        assert '0.288\n' == diffed.output