"""Import/export formats plugin — provides standard file formats as plugins.

Part of the W4a contribution architecture (Spec #359): file formats live in
this plugin instead of being hardcoded in the core orchestrator. New formats
(e.g. PDF later) are added as additional format plugins without touching the
core.

Lifecycle: registers the bundled handlers (csv, json, xlsx) in the core
format registry on activate, unregisters them on deactivate.
"""

from __future__ import annotations

from typing import Any

from app.core.importexport_registry import get_format_registry
from app.plugins.base import BasePlugin
from app.plugins.builtins.importexport_formats.formats import CsvFormat, JsonFormat, XlsxFormat
from app.plugins.manifest import PluginManifest


class ImportExportFormatsPlugin(BasePlugin):
    """Bundles the standard import/export file formats."""

    manifest = PluginManifest(
        name="importexport_formats",
        version="1.0.0",
        display_name="Import/Export Formate",
        description="Standard-Formate für Import/Export: CSV, JSON, XLSX.",
        dependencies=[],
        routes=[],
        events=[],
        migrations=[],
        permissions=[],
        is_core=True,
    )

    def __init__(self) -> None:
        super().__init__()
        self._handlers: list[Any] = [CsvFormat(), JsonFormat(), XlsxFormat()]

    async def on_activate(self, db, service_container, event_bus) -> None:
        await super().on_activate(db, service_container, event_bus)
        registry = get_format_registry()
        for handler in self._handlers:
            registry.register(handler)

    async def on_deactivate(self, db, service_container, event_bus) -> None:
        await super().on_deactivate(db, service_container, event_bus)
        registry = get_format_registry()
        for handler in self._handlers:
            registry.unregister(handler.format_id)