import contextlib
import io
import tempfile
import unittest
from pathlib import Path

from ampg.cli import main


def _write_config(root: Path) -> Path:
    source = root / "site"
    source.mkdir()
    (source / "index.html").write_text("<h1>Hello</h1>", encoding="utf-8")
    config_path = root / "gateway.toml"
    config_path.write_text(
        """
[[site]]
id = "example"
domain = "example.test"

[site.source]
kind = "static-html"
path = "./site"

[site.outputs]
root = "./out"
plan_root = "./plan"

[site.protocols.i2p]
enabled = true
renderer = "privacy-html"
daemon = "i2pd"
daemon_policy = "auto"
i2p_url = "ready.b32.i2p"
""",
        encoding="utf-8",
    )
    return config_path


def _run_cli(args: list[str]) -> tuple[int, str, str]:
    stdout = io.StringIO()
    stderr = io.StringIO()
    with contextlib.redirect_stdout(stdout), contextlib.redirect_stderr(stderr):
        status = main(args)
    return status, stdout.getvalue(), stderr.getvalue()


class ApprovalsTest(unittest.TestCase):
    def test_approval_cli_can_move_apply_preflight_to_ready(self):
        with tempfile.TemporaryDirectory() as tmp:
            root = Path(tmp).resolve()
            config_path = _write_config(root)
            output = root / "out/i2p"
            output.mkdir(parents=True)
            (output / ".ampg-output").write_text("generated by AMPG\n", encoding="utf-8")

            status, output_text, _ = _run_cli(
                [
                    "--config",
                    str(config_path),
                    "apply",
                    "--dry-run",
                    "--write-artifacts",
                    "--platform",
                    "android-termux",
                ]
            )
            self.assertEqual(0, status)
            self.assertIn("AMPG_APPLY_PREFLIGHT status=review", output_text)

            status, output_text, _ = _run_cli(
                [
                    "--config",
                    str(config_path),
                    "approvals",
                    "approve",
                    "--all",
                    "--platform",
                    "android-termux",
                ]
            )
            self.assertEqual(0, status)
            self.assertIn("AMPG_APPROVAL_SUMMARY mode=approve candidates=6", output_text)
            self.assertIn("written=6", output_text)
            self.assertTrue((root / ".ampg/state/approvals.json").exists())

            status, output_text, _ = _run_cli(
                [
                    "--config",
                    str(config_path),
                    "apply",
                    "--dry-run",
                    "--write-artifacts",
                    "--platform",
                    "android-termux",
                ]
            )

        self.assertEqual(0, status)
        self.assertIn("AMPG_APPLY_PREFLIGHT status=ready", output_text)
        self.assertNotIn("AMPG_APPLY_PREFLIGHT_ITEM", output_text)

    def test_approval_cli_reports_stale_artifact_after_edit(self):
        with tempfile.TemporaryDirectory() as tmp:
            root = Path(tmp).resolve()
            config_path = _write_config(root)
            output = root / "out/i2p"
            output.mkdir(parents=True)
            (output / ".ampg-output").write_text("generated by AMPG\n", encoding="utf-8")
            _run_cli(
                [
                    "--config",
                    str(config_path),
                    "apply",
                    "--dry-run",
                    "--write-artifacts",
                    "--platform",
                    "android-termux",
                ]
            )
            _run_cli(
                [
                    "--config",
                    str(config_path),
                    "approvals",
                    "approve",
                    "--kind",
                    "daemon-config",
                    "--platform",
                    "android-termux",
                ]
            )
            artifact = root / "plan/example/i2p/managed/android-termux/i2pd-tunnels.conf"
            artifact.write_text(artifact.read_text(encoding="utf-8") + "# edited\n", encoding="utf-8")

            status, output_text, _ = _run_cli(
                [
                    "--config",
                    str(config_path),
                    "approvals",
                    "list",
                    "--kind",
                    "daemon-config",
                    "--platform",
                    "android-termux",
                ]
            )

        self.assertEqual(0, status)
        self.assertIn("status=stale", output_text)
        self.assertIn("artifact differs from current generator output", output_text)

    def test_approval_cli_requires_explicit_scope(self):
        with tempfile.TemporaryDirectory() as tmp:
            config_path = _write_config(Path(tmp))

            status, _, error_text = _run_cli(
                [
                    "--config",
                    str(config_path),
                    "approvals",
                    "approve",
                    "--platform",
                    "android-termux",
                ]
            )

        self.assertEqual(1, status)
        self.assertIn("pass --all or --kind", error_text)


if __name__ == "__main__":
    unittest.main()