"""Unit tests: parse_encrypt"""

import sys

import pytest


def test_not_called(runner, paths):
    """Test parse_encrypt (not called)"""
    run = run_parse_encrypt(runner, paths, skip_parse=True)
    assert run.success
    assert run.err == ""
    assert "EIF:unparsed" in run.out, "EIF should be unparsed"
    assert "EIF_COUNT:1" in run.out, "Only value of EIF should be unparsed"


def test_short_circuit(runner, paths):
    """Test parse_encrypt (short-circuit)"""
    run = run_parse_encrypt(runner, paths, twice=True)
    assert run.success
    assert run.err == ""
    assert "PARSE_ENCRYPT_SHORT=parse_encrypt() not reprocessed" in run.out, "parse_encrypt() should short-circuit"


@pytest.mark.parametrize(
    "encrypt",
    [
        ("missing"),
        ("empty"),
    ],
)
def test_empty(runner, paths, encrypt):
    """Test parse_encrypt (file missing/empty)"""

    # write encrypt file
    if encrypt == "missing":
        assert not paths.encrypt.exists(), "Encrypt should be missing"
    else:
        paths.encrypt.write("")
        assert paths.encrypt.exists(), "Encrypt should exist"
        assert paths.encrypt.size() == 0, "Encrypt should be empty"

    # run parse_encrypt
    run = run_parse_encrypt(runner, paths)
    assert run.success
    assert run.err == ""

    # validate parsing result
    assert "EIF_COUNT:0" in run.out, "EIF should be empty"


def create_test_encrypt_data(paths):
    """Generate test data for testing encrypt"""

    edata = ""
    expected = set()

    # empty line
    edata += "\n"

    # simple comments
    edata += "# a simple comment\n"
    edata += "    # a comment with leading space\n"

    # unreferenced directory
    paths.work.join("unreferenced").mkdir()

    # simple files
    edata += "simple_file\n"
    edata += "simple.file\n"
    paths.work.join("simple_file").write("")
    paths.work.join("simple.file").write("")
    paths.work.join("simple_file2").write("")
    paths.work.join("simple.file2").write("")
    expected.add("simple_file")
    expected.add("simple.file")

    # simple files in directories
    edata += "simple_dir/simple_file\n"
    paths.work.join("simple_dir/simple_file").write("", ensure=True)
    paths.work.join("simple_dir/simple_file2").write("", ensure=True)
    expected.add("simple_dir/simple_file")

    # paths with spaces
    edata += "with space/with space\n"
    paths.work.join("with space/with space").write("", ensure=True)
    paths.work.join("with space/with space2").write("", ensure=True)
    expected.add("with space/with space")

    # hidden files
    edata += ".hidden\n"
    paths.work.join(".hidden").write("")
    expected.add(".hidden")

    # hidden files in directories
    edata += ".hidden_dir/.hidden_file\n"
    paths.work.join(".hidden_dir/.hidden_file").write("", ensure=True)
    expected.add(".hidden_dir/.hidden_file")

    # wildcards
    edata += "wild*\n"
    paths.work.join("wildcard1").write("", ensure=True)
    paths.work.join("wildcard2").write("", ensure=True)
    expected.add("wildcard1")
    expected.add("wildcard2")

    edata += "dirwild*\n"
    paths.work.join("dirwildcard/file1").write("", ensure=True)
    paths.work.join("dirwildcard/file2").write("", ensure=True)
    expected.add("dirwildcard")

    # excludes
    edata += "exclude*\n"
    edata += "ex ex/*\n"
    paths.work.join("exclude_file1").write("")
    paths.work.join("exclude_file2.ex").write("")
    paths.work.join("exclude_file3.ex3").write("")
    expected.add("exclude_file1")
    expected.add("exclude_file3.ex3")
    edata += "!*.ex\n"
    edata += "!ex ex/*.txt\n"
    paths.work.join("ex ex/file4").write("", ensure=True)
    paths.work.join("ex ex/file5.txt").write("", ensure=True)
    paths.work.join("ex ex/file6.text").write("", ensure=True)
    expected.add("ex ex/file4")
    expected.add("ex ex/file6.text")

    # double star (not supported on bash 3 which is the default on macOS)
    if sys.platform != "darwin":
        edata += "doublestar/**/file*\n"
        edata += "!**/file3\n"
        paths.work.join("doublestar/a/b/file1").write("", ensure=True)
        paths.work.join("doublestar/c/d/file2").write("", ensure=True)
        paths.work.join("doublestar/e/f/file3").write("", ensure=True)
        paths.work.join("doublestar/g/h/nomatch").write("", ensure=True)
        expected.add("doublestar/a/b/file1")
        expected.add("doublestar/c/d/file2")
        # doublestar/e/f/file3 is excluded

    return edata, expected


@pytest.mark.usefixtures("ds1_repo_copy")
def test_file_parse_encrypt(runner, paths):
    """Test parse_encrypt

    Test an array of supported features of the encrypt configuration.
    """

    # generate test data & expectations
    edata, expected = create_test_encrypt_data(paths)

    # write encrypt file
    print(f"ENCRYPT:\n---\n{edata}---\n")
    paths.encrypt.write(edata)
    assert paths.encrypt.isfile()

    # run parse_encrypt
    run = run_parse_encrypt(runner, paths)
    assert run.success
    assert run.err == ""

    assert f"EIF_COUNT:{len(expected)}" in run.out, "EIF count wrong"
    for expected_file in expected:
        assert f"EIF:{expected_file}\n" in run.out

    sorted_expectations = "\n".join([f"EIF:{exp}" for exp in sorted(expected)])
    assert sorted_expectations in run.out


def run_parse_encrypt(runner, paths, skip_parse=False, twice=False):
    """Run parse_encrypt

    A count of ENCRYPT_INCLUDE_FILES will be reported as EIF_COUNT:X. All
    values of ENCRYPT_INCLUDE_FILES will be reported as individual EIF:value
    lines.
    """
    parse_cmd = "parse_encrypt"
    if skip_parse:
        parse_cmd = ""
    if twice:
        parse_cmd = "parse_encrypt; parse_encrypt"
    script = f"""
        YADM_TEST=1 source {paths.pgm}
        YADM_ENCRYPT={paths.encrypt}
        export YADM_ENCRYPT
        GIT_DIR={paths.repo}
        export GIT_DIR
        YADM_WORK={paths.work}
        export YADM_WORK
        {parse_cmd}
        export ENCRYPT_INCLUDE_FILES
        export PARSE_ENCRYPT_SHORT
        env
        echo EIF_COUNT:${{#ENCRYPT_INCLUDE_FILES[@]}}
        for value in "${{ENCRYPT_INCLUDE_FILES[@]}}"; do
            echo "EIF:$value"
        done
    """
    run = runner(command=["bash"], inp=script)
    return run