"""Coverage inventory is explicit intent, never execution or guessed completion."""

import json
from pathlib import Path
import re
import shutil
import sys
from unittest.mock import patch

import pytest

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT / "tools/devkit"))
from govoplan_devkit.catalog import build_coverage, build_stages, module_ui_stages  # noqa: E402
from govoplan_devkit.coverage import canonical_invocations  # noqa: E402
from govoplan_devkit.package_tests import (  # noqa: E402
    CORE_COMPONENT_SUITES,
    declared_tests,
    read_package,
)
from govoplan_devkit.workspace import Project, Repository  # noqa: E402


@pytest.fixture
def fixture(tmp_path):
    core = Repository("govoplan-core", tmp_path / "govoplan-core", ("core",))
    meta = Repository("govoplan", tmp_path / "govoplan", ("meta",))
    module = Repository("govoplan-example", tmp_path / "govoplan-example", ("example",))
    for repo in (core, meta, module):
        (repo.path / "webui/scripts").mkdir(parents=True)
        (repo.path / "webui/tests").mkdir()
    scripts = {
        "test:components": "node scripts/run-component-tests.mjs",
        **{
            f"test:{name}": f"node scripts/run-component-tests.mjs {name}"
            for name in CORE_COMPONENT_SUITES
        },
    }
    (core.path / "webui/package.json").write_text(json.dumps({"scripts": scripts}))
    (core.path / "webui/scripts/run-component-tests.mjs").write_text("// fixture")
    (module.path / "webui/package.json").write_text(
        json.dumps(
            {
                "scripts": {
                    "test:safe": "node --test tests/source.test.mjs",
                    "test:compound": "tsc && node test.js",
                    "test:bad-quote": "node 'broken",
                }
            }
        )
    )
    (module.path / "webui/tests/source.test.mjs").write_text("// fixture")
    script = meta.path / "tools/checks/check-focused.sh"
    script.parent.mkdir(parents=True)
    phase_metadata = ROOT / "tools/checks/focused-phases.json"
    shutil.copyfile(phase_metadata, script.with_name("focused-phases.json"))
    bodies = {
        "core-ui": 'cd "$ROOT/webui"\n"$NPM" run test:components -- layout-primitives page-layout data-grid-actions mail-components\n',
        "module-ui": 'cd "$WORKSPACE_ROOT/govoplan-example/webui"\n"$NPM" run test:compound\n',
    }
    script.write_text(
        "\n".join(
            f"focused_phase_{phase['id'].replace('-', '_')}() {{\n# devkit-phase: {phase['id']} begin\n"
            + bodies.get(phase["id"], 'cd "$ROOT"\n')
            + f"# devkit-phase: {phase['id']} end\n}}\n"
            for phase in json.loads(phase_metadata.read_text())["phases"]
        )
    )
    project = Project("Fixture", (meta, core, module), {})
    with (
        patch("govoplan_devkit.workspace.load_project", return_value=project),
        patch("govoplan_devkit.coverage.load_project", return_value=project),
    ):
        yield tmp_path, core, module, project


def rows(coverage, repo="govoplan-core"):
    return {row["name"]: row for row in coverage["suites"] if row["repo"] == repo}


def test_core_aliases_are_explicitly_excluded_in_quick_and_covered_by_one_ui_stage(
    fixture,
):
    root, _, _, _ = fixture
    quick = rows(build_coverage(root, "quick", [], False))
    ui = rows(build_coverage(root, "ui", [], False))
    for suite in CORE_COMPONENT_SUITES:
        assert quick["test:" + suite]["disposition"] == "excluded"
        assert "quick" in quick["test:" + suite]["reason"]
        assert ui["test:" + suite]["disposition"] == "covered_elsewhere"
        assert ui["test:" + suite]["covering_stage"] == "core.component-batch"
    assert ui["test:components"]["covered_components"] == list(CORE_COMPONENT_SUITES)


def test_full_reports_only_four_of_sixteen_components_and_exact_shell_suite(fixture):
    root, _, _, _ = fixture
    result = build_coverage(root, "full", ["example"], False)
    core = rows(result)
    aliases = [core["test:" + suite] for suite in CORE_COMPONENT_SUITES]
    assert sum(item["disposition"] == "covered_elsewhere" for item in aliases) == 4
    assert sum(item["disposition"] == "excluded" for item in aliases) == 12
    assert len(core["test:components"]["covered_components"]) == 4
    assert "4/16" in core["test:components"]["reason"]
    module = rows(result, "govoplan-example")
    assert module["test:compound"]["disposition"] == "planned"
    assert module["test:safe"]["disposition"] == "excluded"
    assert result["stages"] == [
        "focused." + phase["id"]
        for phase in json.loads(
            (ROOT / "tools/checks/focused-phases.json").read_text()
        )["phases"]
    ]
    assert core["test:components"]["covering_stage"] == "focused.core-ui"
    assert module["test:compound"]["covering_stage"] == "focused.module-ui"


def test_prebuilt_plan_avoids_replanning(fixture):
    root, _, _, _ = fixture
    stages = build_stages(root, "quick", [], False)
    with patch(
        "govoplan_devkit.catalog.build_stages",
        side_effect=AssertionError("must not replan"),
    ):
        result = build_coverage(root, "quick", [], False, stages=stages)
    assert rows(result, "govoplan-example")["test:safe"]["disposition"] == "planned"
    assert sum(result["counts"].values()) == result["suite_count"]
    assert all(item["reason"] for item in result["suites"])


def test_missing_or_spoofed_phase_stage_does_not_grant_component_coverage(fixture):
    root, _, _, _ = fixture
    stages = build_stages(root, "full", [], False)
    without_core = [item for item in stages if item["id"] != "focused.core-ui"]
    result = build_coverage(root, "full", [], False, stages=without_core)
    assert rows(result)["test:components"]["covered_components"] == []
    assert (
        rows(result, "govoplan-example")["test:compound"]["covering_stage"]
        == "focused.module-ui"
    )
    next(item for item in stages if item["id"] == "focused.core-ui")["argv"] = ["true"]
    spoofed = build_coverage(root, "full", [], False, stages=stages)
    assert rows(spoofed)["test:components"]["covered_components"] == []


@pytest.mark.parametrize("wrapper", ["heredoc", "function", "conditional"])
def test_lookalike_phase_wrappers_outside_top_level_do_not_grant_coverage(
    fixture, wrapper
):
    root, core, _, project = fixture
    meta = next(repo.path for repo in project.repositories if repo.name == "govoplan")
    path = meta / "tools/checks/check-focused.sh"
    fake = 'focused_phase_core_ui() {\n# devkit-phase: core-ui begin\ncd "$ROOT/webui"\n"$NPM" run test:spoof\n# devkit-phase: core-ui end\n}\n'
    prefix = {
        "heredoc": "cat <<'BODY'\n" + fake + "BODY\n",
        "function": "unused() {\n" + fake + "}\n",
        "conditional": "if false; then\n" + fake + "fi\n",
    }[wrapper]
    path.write_text(prefix + path.read_text())
    result = canonical_invocations(root, meta, core.path)
    assert result["notes"] == []
    assert [item["name"] for item in result["npm"]] == [
        "test:components",
        "test:compound",
    ]


@pytest.mark.parametrize("damage", ["missing", "duplicate", "bad-end"])
def test_invalid_marked_phase_bodies_do_not_infer_coverage(fixture, damage):
    root, core, _, project = fixture
    meta = next(repo.path for repo in project.repositories if repo.name == "govoplan")
    path = meta / "tools/checks/check-focused.sh"
    text = path.read_text()
    if damage == "missing":
        text = text.replace("focused_phase_core_ui()", "unregistered_core_ui()")
    elif damage == "duplicate":
        text += text
    else:
        text = text.replace(
            "# devkit-phase: core-ui end", "# devkit-phase: another end"
        )
    path.write_text(text)
    result = canonical_invocations(root, meta, core.path)
    assert result["npm"] == [] and result["node"] == []
    assert "no phase coverage inferred" in result["notes"][0]


@pytest.mark.parametrize(
    "repo_name,name,command",
    [
        ("govoplan-example", "test:components", "node scripts/run-component-tests.mjs"),
        (
            "govoplan-core",
            "test:dialog-focus",
            "node scripts/run-component-tests.mjs dialog-focus && npm run dev",
        ),
        (
            "govoplan-core",
            "test:unrecognized",
            "node scripts/run-component-tests.mjs dialog-focus",
        ),
    ],
)
def test_component_alias_exemption_is_exact_and_core_only(
    tmp_path, repo_name, name, command
):
    repo = Repository(repo_name, tmp_path / repo_name)
    package = repo.path / "webui/package.json"
    package.parent.mkdir(parents=True)
    package.write_text(json.dumps({"scripts": {name: command}}))
    declared = declared_tests(repo, package)
    assert declared[0]["component_suite"] is None
    assert declared[0]["_argv"] is None
    assert module_ui_stages(repo, reason="fixture") == []


@pytest.mark.parametrize(
    "body",
    [
        "[]",
        "null",
        '{"scripts":[]}',
        '{"scripts":{"test:bad":42}}',
        '{"scripts":{"test:one":"node a","test:one":"node b"}}',
        "[" * 2000 + "]" * 2000,
    ],
)
def test_malformed_package_metadata_is_a_controlled_error(tmp_path, body):
    package = tmp_path / "package.json"
    package.write_text(body)
    with pytest.raises(ValueError):
        read_package(package)


def test_oversize_package_and_symlinked_test_are_not_discovered(tmp_path):
    repo = Repository("example", tmp_path)
    webui = tmp_path / "webui"
    (webui / "tests").mkdir(parents=True)
    package = webui / "package.json"
    package.write_text(" " * (1024 * 1024 + 1))
    with pytest.raises(ValueError):
        read_package(package)
    package.write_text(
        json.dumps({"scripts": {"test:escape": "node tests/escape.mjs"}})
    )
    (webui / "tests/escape.mjs").symlink_to(tmp_path / "outside.mjs")
    (tmp_path / "outside.mjs").write_text("// fixture")
    assert module_ui_stages(repo, reason="fixture") == []


def test_unparseable_and_sensitive_commands_do_not_leak_into_coverage(fixture):
    root, _, module, _ = fixture
    package = module.path / "webui/package.json"
    package.write_text(
        json.dumps(
            {
                "scripts": {
                    "test:secret": "node tests/source.test.mjs --token unknown-private-value",
                    "test:broken": "node 'unknown-other-secret",
                }
            }
        )
    )
    result = build_coverage(root, "quick", [], False)
    encoded = json.dumps(result)
    assert (
        "unknown-private-value" not in encoded and "unknown-other-secret" not in encoded
    )
    assert "_argv" not in encoded and '"command"' not in encoded
    assert all(
        item["disposition"] == "unsupported"
        for item in rows(result, "govoplan-example").values()
    )


def test_custom_check_coverage_redacts_separate_token_and_includes_unselected(tmp_path):
    project = tmp_path / "project.json"
    project.write_text(
        json.dumps(
            {
                "schema_version": 1,
                "repositories": [{"name": "app", "path": "."}],
                "checks": [
                    {
                        "id": "one",
                        "argv": ["check", "--token", "unknown-private-value"],
                    },
                    {"id": "two", "argv": ["true"]},
                ],
                "profiles": {"quick": ["one"]},
            }
        )
    )
    result = build_coverage(tmp_path, "quick", [], False, project)
    assert "unknown-private-value" not in json.dumps(result)
    assert result["counts"]["planned"] == 1 and result["counts"]["excluded"] == 1


def test_canonical_parser_does_not_credit_comments_heredocs_conditionals_or_chains(
    tmp_path,
):
    meta, core = tmp_path / "govoplan", tmp_path / "govoplan-core"
    path = meta / "tools/checks/check-focused.sh"
    path.parent.mkdir(parents=True)
    path.write_text(
        'cd "$ROOT/webui"\n# "$NPM" run test:comment\n"$PYTHON" - <<\'PY\'\n"$NPM" run test:heredoc\nPY\nif false; then\n"$NPM" run test:conditional\nfi\n"$NPM" run test:compound && true\n"$NPM" run test:real\n'
    )
    result = canonical_invocations(tmp_path, meta, core)
    assert [item["name"] for item in result["npm"]] == ["test:real"]


def test_real_canonical_gate_has_four_explicit_component_suites():
    result = canonical_invocations(ROOT.parent, ROOT, ROOT.parent / "govoplan-core")
    calls = [item for item in result["npm"] if item["name"] == "test:components"]
    assert len(calls) == 1
    assert calls[0]["args"] == [
        "layout-primitives",
        "page-layout",
        "data-grid-actions",
        "mail-components",
    ]
    assert calls[0]["phase"] == "core-ui"
    for name, phase in (
        ("test:module-permutations", "module-builds"),
        ("test:conformance", "browser"),
    ):
        matching = [item for item in result["npm"] if item["name"] == name]
        assert len(matching) == 1 and matching[0]["phase"] == phase


def test_known_core_component_aliases_match_the_owned_runner_registry():
    runner = (
        ROOT.parent / "govoplan-core/webui/scripts/run-component-tests.mjs"
    ).read_text()
    block = runner.split("export const componentSuites = Object.freeze({", 1)[1].split(
        "});", 1
    )[0]
    assert set(re.findall(r'^  "([a-z0-9-]+)":', block, re.M)) == set(
        CORE_COMPONENT_SUITES
    )