from __future__ import annotations

import copy
import json
import subprocess
from pathlib import Path

import pytest

from scripts import run_gcp_leoclean_nosend_oci_smoke as smoke


def _runtime_image(*, user: str | None = "", start_interval: int | None = 0) -> dict:
    healthcheck = {
        **smoke.EXPECTED_HEALTHCHECK,
        "StartInterval": start_interval,
    }
    return {
        "Config": {
            "User": user,
            "Entrypoint": list(smoke.EXPECTED_ENTRYPOINT),
            "Cmd": list(smoke.EXPECTED_COMMAND),
            "Healthcheck": healthcheck,
            "StopSignal": smoke.EXPECTED_STOP_SIGNAL,
        }
    }


@pytest.mark.parametrize("user", [None, ""])
@pytest.mark.parametrize("start_interval", [None, 0])
def test_runtime_configuration_accepts_portable_unset_values(user: str | None, start_interval: int | None) -> None:
    receipt = smoke._validate_image_runtime_configuration(
        _runtime_image(user=user, start_interval=start_interval)
    )

    assert receipt["bootstrap_user"] == "root"
    assert receipt["entrypoint"] == smoke.EXPECTED_ENTRYPOINT
    assert receipt["command"] == ["service"]
    assert receipt["stop_signal"] == "SIGTERM"


@pytest.mark.parametrize(
    ("field", "value", "message"),
    [
        ("User", "65532:65532", "root bootstrap user"),
        ("Entrypoint", ["/bin/sh"], "entrypoint drifted"),
        ("Cmd", ["probe"], "command drifted"),
        ("StopSignal", "SIGKILL", "stop signal drifted"),
    ],
)
def test_runtime_configuration_rejects_authoritative_field_drift(field: str, value: object, message: str) -> None:
    image = _runtime_image()
    image["Config"][field] = value

    with pytest.raises(smoke.SmokeError, match=message):
        smoke._validate_image_runtime_configuration(image)


@pytest.mark.parametrize(
    ("field", "value"),
    [
        ("Test", ["CMD-SHELL", "true"]),
        ("Interval", 1),
        ("Timeout", 1),
        ("StartPeriod", 1),
        ("Retries", 1),
        ("StartInterval", 1),
        ("StartInterval", False),
        ("Unexpected", 1),
    ],
)
def test_runtime_configuration_rejects_healthcheck_drift(field: str, value: object) -> None:
    image = _runtime_image()
    image["Config"]["Healthcheck"] = copy.deepcopy(image["Config"]["Healthcheck"])
    image["Config"]["Healthcheck"][field] = value

    with pytest.raises(smoke.SmokeError, match="healthcheck"):
        smoke._validate_image_runtime_configuration(image)


def test_build_command_is_one_platform_pinned_local_build(tmp_path: Path) -> None:
    command = smoke._build_command(
        context=tmp_path,
        tag="livingip-leoclean-nosend-smoke:test",
        smoke_label="livingip.leoclean-nosend-smoke=test",
        build_args={"TELEO_REVISION": "1" * 40, "INPUT_SHA256": "2" * 64},
    )

    assert command[:6] == ["docker", "build", "--platform", "linux/amd64", "--pull=false", "--tag"]
    assert command.count("build") == 1
    assert "--push" not in command
    assert "--load" not in command
    assert command[-1] == str(tmp_path)
    assert command.index("INPUT_SHA256=" + "2" * 64) < command.index("TELEO_REVISION=" + "1" * 40)


def test_run_command_has_no_port_secret_or_host_mount_surface() -> None:
    command = smoke._run_command(
        tag="livingip-leoclean-nosend-smoke:test",
        name="livingip-leoclean-nosend-smoke-test",
        smoke_label="livingip.leoclean-nosend-smoke=test",
    )
    encoded = " ".join(command).casefold()

    for required in (
        "--read-only",
        "--cap-drop=all",
        "--security-opt=no-new-privileges:true",
        "--network=bridge",
        "--pids-limit=512",
        "--pull=never",
    ):
        assert required in encoded
    assert "--publish" not in encoded
    assert " -p " not in encoded
    assert "--env" not in encoded
    assert "--volume" not in encoded
    assert "docker.sock" not in encoded
    assert "telegram" not in encoded


def test_unsupported_send_requires_exact_redacted_fail_closed_result(monkeypatch: pytest.MonkeyPatch) -> None:
    result = subprocess.CompletedProcess(
        args=["docker"],
        returncode=65,
        stdout="",
        stderr=json.dumps({"status": "fail", "error": "container_contract_failed"}) + "\n",
    )
    monkeypatch.setattr(smoke, "_run", lambda *_args, **_kwargs: result)

    receipt = smoke._verify_unsupported_send("fixture")

    assert receipt == {
        "exit_code": 65,
        "stdout_empty": True,
        "redacted_error": {"status": "fail", "error": "container_contract_failed"},
    }


def test_claim_ceiling_does_not_overstate_entrypoint_dispatch_probe() -> None:
    assert "does not prove a real Hermes tool-call denial" in smoke.SUCCESS_CLAIM_CEILING
    assert "general network-egress denial" in smoke.SUCCESS_CLAIM_CEILING
    assert "Cloud SQL permissions" in smoke.SUCCESS_CLAIM_CEILING
    assert "production readiness" in smoke.SUCCESS_CLAIM_CEILING
    assert "base images and build cache may remain" in smoke.SUCCESS_CLAIM_CEILING
    assert "makes no affirmative image-build" in smoke.FAILURE_CLAIM_CEILING


def test_health_wait_rejects_container_running_a_different_image(monkeypatch: pytest.MonkeyPatch) -> None:
    inspected = [{"Image": "sha256:wrong", "State": {"Status": "running", "Health": {"Status": "healthy"}}}]
    result = subprocess.CompletedProcess(args=["docker"], returncode=0, stdout=json.dumps(inspected), stderr="")
    monkeypatch.setattr(smoke, "_run", lambda *_args, **_kwargs: result)

    with pytest.raises(smoke.SmokeError, match="image ID differs"):
        smoke._wait_healthy("fixture", expected_image_id="sha256:expected", timeout=0.1)


def test_cleanup_fails_when_docker_inventory_is_indeterminate(monkeypatch: pytest.MonkeyPatch) -> None:
    calls = 0

    def fake_run(*_args, **_kwargs):
        nonlocal calls
        calls += 1
        if calls <= 2:
            return subprocess.CompletedProcess(args=["docker"], returncode=1, stdout="", stderr="not found")
        raise smoke.SmokeError("Docker inventory unavailable")

    monkeypatch.setattr(smoke, "_run", fake_run)

    with pytest.raises(smoke.SmokeError, match="inventory unavailable"):
        smoke._cleanup(
            name="fixture",
            tag="livingip-leoclean-nosend-smoke:fixture",
            image_id="sha256:" + "1" * 64,
            smoke_label="livingip.leoclean-nosend-smoke=fixture",
        )


def test_failed_receipt_never_carries_the_success_claim(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(smoke.shutil, "which", lambda _name: None)
    monkeypatch.setattr(smoke, "_cleanup", lambda **_kwargs: {"status": "pass"})
    output = tmp_path / "receipt.json"

    report, exit_code = smoke.run_smoke(
        repo_root=tmp_path,
        artifact=tmp_path / "artifact",
        runtime_receipt=tmp_path / "runtime.json",
        output=output,
    )

    assert exit_code == 65
    assert report["status"] == "fail"
    assert report["claim_ceiling"] == smoke.FAILURE_CLAIM_CEILING
    assert smoke.SUCCESS_CLAIM_CEILING not in output.read_text(encoding="utf-8")


def test_runtime_canary_can_retain_only_a_successfully_verified_artifact() -> None:
    source = (Path(__file__).resolve().parents[1] / "scripts" / "run_leoclean_nosend_runtime_canary.sh").read_text(
        encoding="utf-8"
    )

    verification = source.index('receipt.get("status") != "pass"')
    retention = source.index('if [[ -n "$artifact_output" ]]')
    assert verification < retention
    assert "retained artifact output already exists" in source
    assert 'cp -pR "$artifact" "$artifact_output_partial"' in source
    assert 'mv "$artifact_output_partial" "$artifact_output"' in source


def test_ci_preloads_the_exact_target_architecture_and_checks_inventory() -> None:
    workflow = (Path(__file__).resolve().parents[1] / ".github" / "workflows" / "ci.yml").read_text(
        encoding="utf-8"
    )

    assert workflow.count("docker pull --platform=linux/amd64") == 3
    assert "container_inventory=\"$(docker ps" in workflow
    assert "image_inventory=\"$(docker images" in workflow
    assert "remaining_containers=\"$(docker ps" in workflow
    assert "remaining_images=\"$(docker images" in workflow