"""Tests for rule collection class."""

# Copyright (c) 2013-2014 Will Thames <will@thames.id.au>
#
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from __future__ import annotations

import collections
import re
from pathlib import Path
from typing import TYPE_CHECKING

import pytest

from ansiblelint.file_utils import Lintable
from ansiblelint.rules import RulesCollection
from ansiblelint.testing import run_ansible_lint

if TYPE_CHECKING:
    from ansiblelint.config import Options


@pytest.fixture(name="test_rules_collection")
def fixture_test_rules_collection() -> RulesCollection:
    """Create a shared rules collection test instance."""
    return RulesCollection([Path("./test/rules/fixtures").resolve()])


@pytest.fixture(name="ematchtestfile")
def fixture_ematchtestfile() -> Lintable:
    """Produce a test lintable with an id violation."""
    return Lintable("examples/playbooks/ematcher-rule.yml", kind="playbook")


@pytest.fixture(name="bracketsmatchtestfile")
def fixture_bracketsmatchtestfile() -> Lintable:
    """Produce a test lintable with matching brackets."""
    return Lintable("examples/playbooks/bracketsmatchtest.yml", kind="playbook")


def test_load_collection_from_directory(test_rules_collection: RulesCollection) -> None:
    """Test that custom rules extend the default ones."""
    # two detected rules plus the internal ones
    assert len(test_rules_collection) == 7


def test_run_collection(
    test_rules_collection: RulesCollection,
    ematchtestfile: Lintable,
) -> None:
    """Test that default rules match pre-meditated violations."""
    matches = test_rules_collection.run(ematchtestfile)
    assert len(matches) == 4  # 3 occurrences of BANNED using TEST0001 + 1 for raw-task
    assert matches[0].lineno == 3


def test_tags(
    test_rules_collection: RulesCollection,
    ematchtestfile: Lintable,
    bracketsmatchtestfile: Lintable,
) -> None:
    """Test that tags are treated as skip markers."""
    matches = test_rules_collection.run(ematchtestfile, tags={"test1"})
    assert len(matches) == 3
    matches = test_rules_collection.run(ematchtestfile, tags={"test2"})
    assert len(matches) == 0
    matches = test_rules_collection.run(bracketsmatchtestfile, tags={"test1"})
    assert len(matches) == 0
    matches = test_rules_collection.run(bracketsmatchtestfile, tags={"test2"})
    assert len(matches) == 2


def test_skip_tags(
    test_rules_collection: RulesCollection,
    ematchtestfile: Lintable,
    bracketsmatchtestfile: Lintable,
) -> None:
    """Test that tags can be skipped."""
    matches = test_rules_collection.run(ematchtestfile, skip_list=["test1", "test3"])
    assert len(matches) == 0
    matches = test_rules_collection.run(ematchtestfile, skip_list=["test2", "test3"])
    assert len(matches) == 3
    matches = test_rules_collection.run(bracketsmatchtestfile, skip_list=["test1"])
    assert len(matches) == 2
    matches = test_rules_collection.run(bracketsmatchtestfile, skip_list=["test2"])
    assert len(matches) == 0


def test_skip_id(
    test_rules_collection: RulesCollection,
    ematchtestfile: Lintable,
    bracketsmatchtestfile: Lintable,
) -> None:
    """Check that skipping valid IDs excludes their violations."""
    matches = test_rules_collection.run(
        ematchtestfile,
        skip_list=["TEST0001", "raw-task"],
    )
    assert len(matches) == 0
    matches = test_rules_collection.run(
        ematchtestfile,
        skip_list=["TEST0002", "raw-task"],
    )
    assert len(matches) == 3
    matches = test_rules_collection.run(bracketsmatchtestfile, skip_list=["TEST0001"])
    assert len(matches) == 2
    matches = test_rules_collection.run(bracketsmatchtestfile, skip_list=["TEST0002"])
    assert len(matches) == 0


def test_skip_non_existent_id(
    test_rules_collection: RulesCollection,
    ematchtestfile: Lintable,
) -> None:
    """Check that skipping invalid IDs changes nothing."""
    matches = test_rules_collection.run(ematchtestfile, skip_list=["DOESNOTEXIST"])
    assert len(matches) == 4


def test_no_duplicate_rule_ids() -> None:
    """Check that rules of the collection don't have duplicate IDs."""
    real_rules = RulesCollection([Path("./src/ansiblelint/rules").resolve()])
    rule_ids = [rule.id for rule in real_rules]
    assert not any(y > 1 for y in collections.Counter(rule_ids).values())


def test_rule_listing() -> None:
    """Test that rich list format output is rendered as a table.

    This check also offers the contract of having rule id, short and long
    descriptions in the console output.
    """
    rules_path = Path("./test/rules/fixtures").resolve()
    result = run_ansible_lint("-r", str(rules_path), "-L")
    assert result.returncode == 0

    for rule in RulesCollection([rules_path]):
        assert rule.id in result.stdout
        assert rule.shortdesc in result.stdout


def test_rules_id_format(config_options: Options) -> None:
    """Assure all our rules have consistent format."""
    rule_id_re = re.compile(r"^[a-z-]{4,30}$")
    rules = RulesCollection(
        [Path("./src/ansiblelint/rules").resolve()],
        options=config_options,
        conditional=False,
    )
    keys: set[str] = set()
    for rule in rules:
        assert rule_id_re.match(
            rule.id,
        ), f"Rule id {rule.id} did not match our required format."
        keys.add(rule.id)
        assert rule.help or rule.description or rule.__doc__, (
            f"Rule {rule.id} must have at least one of:  .help, .description, .__doc__"
        )
    assert "yaml" in keys, "yaml rule is missing"
    assert len(rules) == 51  # update this number when adding new rules!
    assert len(keys) == len(rules), "Duplicate rule ids?"
