#!/usr/bin/env python3
"""Create a reviewed command-extension skeleton without runtime privileges."""

from __future__ import annotations

import argparse
import json
import sys
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
sys.path[:0] = [
    str(ROOT / "packages" / "jwebot-sdk" / "src"),
    str(ROOT / "packages" / "jwebot-kernel" / "src"),
]

from jwebot_kernel import ManifestError, parse_manifest  # noqa: E402


def module_name(plugin_id: str) -> str:
    return plugin_id.replace("-", "_")


def manifest_text(
    plugin_id: str,
    command: str,
    author: str,
    description: str,
    help_entry: str,
) -> str:
    module = module_name(plugin_id)
    return f"""id = "{plugin_id}"
author = "{author}"
description = {json.dumps(description, ensure_ascii=False)}
help = [{json.dumps(help_entry, ensure_ascii=False)}]
version = "1.0.0"
api_version = "1"
entrypoint = "{module}:plugin"
type = "command"

[capabilities]
commands = ["{command}"]
storage = false
network_profiles = []
service_profiles = []
"""


def module_text(plugin_id: str, command: str) -> str:
    return f'''"""Command extension: {plugin_id}."""

from jwebot_sdk import Event, ExtensionResult, ReplyPlan, SingleGroupContext


def handle(event: Event, arguments: str) -> ExtensionResult:
    del event, arguments
    return ExtensionResult(reply=ReplyPlan.text("TODO"))


def plugin(context: SingleGroupContext) -> None:
    context.commands.register("{command}", handle)
'''


def test_text(plugin_id: str) -> str:
    module = module_name(plugin_id)
    return f'''import sys
import unittest
from pathlib import Path


SOURCE = Path(__file__).resolve().parents[1] / "src"
sys.path.insert(0, str(SOURCE))

from jwebot_sdk import Event, PlanKind

from {module} import handle


class PluginTests(unittest.TestCase):
    def test_command_returns_a_structured_reply(self):
        event = Event(
            event_id="event-1",
            observed_at="2026-01-01T00:00:00+08:00",
            sender="tester",
            text="@JWeBot test",
            group_fingerprint="group-test",
            mention_bot=True,
        )
        result = handle(event, "")
        self.assertEqual(result.reply.kind, PlanKind.TEXT)


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


def readme_text(
    plugin_id: str,
    command: str,
    author: str,
    description: str,
    help_entry: str,
) -> str:
    return f"""# {plugin_id}

Author: `{author}`

{description}

Command: `{command}`

Help: `{help_entry}`

This extension may return structured JWeBot SDK results only. It must not use
GUI automation, raw storage, environment variables, subprocesses, SSH, Docker,
or unrestricted network access.
"""


def validate_inputs(
    plugin_id: str,
    command: str,
    author: str,
    description: str,
    help_entry: str,
) -> None:
    parse_manifest(
        {
            "id": plugin_id,
            "author": author,
            "description": description,
            "help": [help_entry],
            "version": "1.0.0",
            "api_version": "1",
            "entrypoint": f"{module_name(plugin_id)}:plugin",
            "type": "command",
            "capabilities": {
                "commands": [command],
                "storage": False,
                "network_profiles": [],
            },
        }
    )


def create_plugin(
    output: Path,
    plugin_id: str,
    command: str,
    author: str,
    description: str,
    help_entry: str | None = None,
) -> Path:
    help_entry = help_entry or command
    validate_inputs(
        plugin_id,
        command,
        author,
        description,
        help_entry,
    )
    destination = output / plugin_id
    if destination.exists():
        raise FileExistsError(f"destination already exists: {destination}")
    source = destination / "src"
    tests = destination / "tests"
    source.mkdir(parents=True)
    tests.mkdir()
    module = module_name(plugin_id)
    (destination / "plugin.toml").write_text(
        manifest_text(
            plugin_id,
            command,
            author,
            description,
            help_entry,
        ),
        encoding="utf-8",
    )
    (source / f"{module}.py").write_text(
        module_text(plugin_id, command),
        encoding="utf-8",
    )
    (tests / "test_plugin.py").write_text(
        test_text(plugin_id),
        encoding="utf-8",
    )
    (destination / "README.md").write_text(
        readme_text(
            plugin_id,
            command,
            author,
            description,
            help_entry,
        ),
        encoding="utf-8",
    )
    return destination


def main() -> int:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("plugin_id")
    parser.add_argument("command")
    parser.add_argument("--author", required=True)
    parser.add_argument("--description", required=True)
    parser.add_argument("--help-entry")
    parser.add_argument(
        "--output",
        type=Path,
        default=ROOT / "extensions" / "friends",
    )
    args = parser.parse_args()
    try:
        destination = create_plugin(
            args.output,
            args.plugin_id,
            args.command,
            args.author,
            args.description,
            args.help_entry,
        )
    except (ManifestError, FileExistsError) as error:
        parser.error(str(error))
    print(destination)
    return 0


if __name__ == "__main__":
    raise SystemExit(main())