from __future__ import annotations

import json
from pathlib import Path
from types import SimpleNamespace

import pytest

from codexpi.docker_service import DockerError, _belongs_to_project, container_action, containers


def inspected(root: Path, *, name: str = "project-web", working_dir: str | None = None, running: bool = False) -> dict:
    return {
        "Id": "a" * 64,
        "Name": f"/{name}",
        "Config": {"Labels": {
            "com.docker.compose.project": "example",
            "com.docker.compose.service": "web",
            "com.docker.compose.project.working_dir": working_dir or str(root),
            "com.docker.compose.project.config_files": str(root / "docker-compose.yml"),
        }},
        "Mounts": [],
        "State": {"Running": running},
    }


def test_project_membership_uses_compose_directory_or_bind_mount(tmp_path: Path):
    project = tmp_path / "project"
    project.mkdir()
    assert _belongs_to_project(inspected(project), project)
    assert not _belongs_to_project(inspected(tmp_path / "other"), project)
    assert _belongs_to_project({"Config": {"Labels": {}}, "Mounts": [
        {"Type": "bind", "Source": str(project / "src")},
    ]}, project)


@pytest.mark.asyncio
async def test_container_listing_only_returns_current_project(tmp_path: Path, monkeypatch):
    project = tmp_path / "project"
    project.mkdir()
    rows = [
        {"ID": "a" * 12, "Names": "project-web"},
        {"ID": "b" * 12, "Names": "someone-else"},
    ]
    values = [inspected(project), {**inspected(tmp_path / "other", name="someone-else"), "Id": "b" * 64}]

    async def fake(argv, cwd=None, timeout=60):
        stdout = "\n".join(json.dumps(row) for row in rows) if argv[1] == "ps" else json.dumps(values)
        return SimpleNamespace(returncode=0, stdout=stdout, stderr="")

    monkeypatch.setattr("codexpi.docker_service.run_command", fake)
    result = await containers(project)
    assert [json.loads(line)["Names"] for line in result["stdout"].splitlines()] == ["project-web"]


@pytest.mark.asyncio
async def test_rebuild_targets_only_the_scoped_compose_service(tmp_path: Path, monkeypatch):
    project = tmp_path / "project"
    project.mkdir()
    calls: list[tuple[list[str], Path | None]] = []

    async def fake(argv, cwd=None, timeout=60):
        calls.append((argv, cwd))
        if len(calls) == 1:
            return SimpleNamespace(returncode=0, stdout=json.dumps({"ID": "a" * 12, "Names": "project-web"}), stderr="")
        if len(calls) == 2:
            return SimpleNamespace(returncode=0, stdout=json.dumps([inspected(project)]), stderr="")
        return SimpleNamespace(returncode=0, stdout="rebuilt", stderr="")

    monkeypatch.setattr("codexpi.docker_service.run_command", fake)
    monkeypatch.setattr("codexpi.docker_service._compose_prefix", lambda _root: ["docker", "compose"])
    result = await container_action("project-web", "rebuild", project)
    assert result["stdout"] == "rebuilt"
    assert calls[-1] == ([
        "docker", "compose", "-f", str(project / "docker-compose.yml"),
        "--project-name", "example", "up", "-d", "--build", "web",
    ], project)


@pytest.mark.asyncio
async def test_project_action_rejects_unrelated_container(tmp_path: Path, monkeypatch):
    project = tmp_path / "project"
    project.mkdir()

    async def fake(argv, cwd=None, timeout=60):
        if argv[1] == "ps":
            return SimpleNamespace(returncode=0, stdout=json.dumps({"ID": "b" * 12, "Names": "other"}), stderr="")
        return SimpleNamespace(returncode=0, stdout=json.dumps([{**inspected(tmp_path / "other", name="other"), "Id": "b" * 64}]), stderr="")

    monkeypatch.setattr("codexpi.docker_service.run_command", fake)
    with pytest.raises(DockerError, match="n’appartient pas"):
        await container_action("other", "restart", project)


@pytest.mark.asyncio
async def test_delete_only_removes_stopped_scoped_container(tmp_path: Path, monkeypatch):
    project = tmp_path / "project"
    project.mkdir()
    calls: list[list[str]] = []

    async def fake(argv, cwd=None, timeout=60):
        calls.append(argv)
        if argv[1] == "ps":
            return SimpleNamespace(returncode=0, stdout=json.dumps({"ID": "a" * 12, "Names": "project-web"}), stderr="")
        if argv[1] == "inspect":
            return SimpleNamespace(returncode=0, stdout=json.dumps([inspected(project)]), stderr="")
        return SimpleNamespace(returncode=0, stdout="project-web", stderr="")

    monkeypatch.setattr("codexpi.docker_service.run_command", fake)
    result = await container_action("project-web", "delete", project)
    assert result["stdout"] == "project-web"
    assert calls[-1] == ["docker", "rm", "project-web"]


@pytest.mark.asyncio
async def test_delete_refuses_running_container(tmp_path: Path, monkeypatch):
    project = tmp_path / "project"
    project.mkdir()

    async def fake(argv, cwd=None, timeout=60):
        if argv[1] == "ps":
            return SimpleNamespace(returncode=0, stdout=json.dumps({"ID": "a" * 12, "Names": "project-web"}), stderr="")
        return SimpleNamespace(returncode=0, stdout=json.dumps([inspected(project, running=True)]), stderr="")

    monkeypatch.setattr("codexpi.docker_service.run_command", fake)
    with pytest.raises(DockerError, match="Arrêtez"):
        await container_action("project-web", "delete", project)