"""Warranty plugin main class.

Asset-general plugin: owns its warranties + warrantyassets tables, an API
surface, and a sidebar entry. Not tied to any one asset type - a warranty can
cover a PC, printer, network device, or machine.
"""

import json
import logging
from pathlib import Path
from typing import List, Dict, Optional, Type

from flask import Flask, Blueprint

from shopdb.plugins.base import BasePlugin, PluginMeta

from .api import warranty_bp
from .models import Warranty, WarrantyAsset

logger = logging.getLogger(__name__)


class WarrantyPlugin(BasePlugin):
    """Warranty tracking plugin."""

    def __init__(self):
        self._manifest = self._load_manifest()

    def _load_manifest(self) -> Dict:
        manifest_path = Path(__file__).parent / 'manifest.json'
        if manifest_path.exists():
            with open(manifest_path, 'r') as f:
                return json.load(f)
        return {}

    @property
    def meta(self) -> PluginMeta:
        return PluginMeta(
            name=self._manifest.get('name', 'warranty'),
            version=self._manifest.get('version', '1.0.0'),
            description=self._manifest.get('description', 'Asset warranty tracking'),
            author=self._manifest.get('author', 'ShopDB Team'),
            dependencies=self._manifest.get('dependencies', []),
            core_version=self._manifest.get('core_version', '>=0.2.0,<1.0.0'),
            api_prefix=self._manifest.get('api_prefix', '/api/warranty'),
        )

    def get_blueprint(self) -> Optional[Blueprint]:
        return warranty_bp

    def get_models(self) -> List[Type]:
        return [Warranty, WarrantyAsset]

    def get_navigation_items(self) -> List[Dict]:
        return [
            {
                'name': 'Warranties',
                'icon': 'shield',
                'route': '/warranties',
                'position': 8,
            },
        ]

    def get_reports(self) -> List[Dict]:
        return [
            {
                'id': 'warranty',
                'name': 'Warranty Report',
                'description': 'Assets bucketed by coverage: expired, expiring soon, active',
                'category': 'warranty',
                'route': '/reports/warranty',
            },
        ]

    def get_asset_panels(self) -> List[Dict]:
        # ADR-010 pilot. Warranty is asset-general so it shows on every detail
        # page (['*']). Declares the existing per-asset warranty endpoint the
        # WarrantyPanel already reads; the generic core panel renderer consumes
        # this instead of each detail view hand-composing the panel.
        return [
            {
                'id': 'warranty',
                'title': 'Warranty',
                'assettypes': ['*'],
                'endpoint': '/api/warranty/asset/{assetid}',
                'render': 'list',
                # Field map: the generic renderer builds each list item from the
                # warranty payload without any warranty-specific frontend code.
                'map': {
                    'title': 'vendor',
                    'badge': {
                        'label': 'status',
                        'color': 'statuscolor',
                        'labelmap': {
                            'active': 'Active',
                            'expiring': 'Expiring Soon',
                            'expired': 'Expired',
                            'unknown': 'Unknown',
                        },
                    },
                    'meta': [
                        {'key': 'servicelevel'},
                        {'key': 'enddate', 'label': 'Ends', 'format': 'date'},
                        {'key': 'servicetag', 'label': 'Tag', 'mono': True},
                    ],
                },
                'empty': 'No warranty on record.',
                'manage': {
                    'to': '/warranties?addfor={assetid}',
                    'label': 'Add / manage',
                    'emptylabel': 'Add one',
                },
                'position': 30,
            },
        ]

    def get_dashboard_widgets(self) -> List[Dict]:
        """Dashboard card: warranties running out, and ones already expired.

        Expired stays listed rather than dropping off. A machine out of
        warranty is a purchasing decision someone still has to make, and
        removing it the day it lapses is how it gets missed entirely.
        """
        return [
            {
                'id': 'warranty-expiring',
                'viewall': '/reports/warranty',
                'title': 'Warranties expiring',
                'endpoint': '/api/warranty/dashboard/expiring',
                'render': 'exceptions',
                'severity': 'info',
                'permission': 'warranty.view',
                'empty': 'hide',
                'position': 50,
                'map': {
                    'title': 'hostname',
                    'detail': 'state',
                    # The bay, which is how the floor identifies the PC. No
                    # date: expired or expiring is the whole decision when
                    # scanning a board, and the exact day belongs on the report
                    # you order from.
                    'meta': [{'key': 'machinenumber', 'label': 'machine'}],
                    'link': '/assets/{assetid}',
                },
            },
        ]

    def get_settings_defaults(self) -> List[Dict]:
        """Settings this plugin owns."""
        return [
            {
                'key': 'warranty_expiringdays',
                'value': '90',
                'valuetype': 'integer',
                'category': 'warranty',
                'description': 'Days ahead to list an expiring warranty on the '
                               'dashboard. Already-expired warranties are always '
                               'listed.',
            },
        ]

    def get_permissions(self) -> List:
        """Return the RBAC permissions this plugin owns."""
        return [
            ('warranty.view', 'View warranties', 'warranty'),
            ('warranty.create', 'Create warranties', 'warranty'),
            ('warranty.edit', 'Edit warranties', 'warranty'),
            ('warranty.delete', 'Delete warranties', 'warranty'),
        ]

    def init_app(self, app: Flask, db_instance) -> None:
        logger.info(f"Warranty plugin initialized (v{self.meta.version})")