shopdb-flask/plugins/warranty/api/routes.py

"""Warranty API: manual CRUD now, provider refresh stubbed for later phases.

Coverage status is derived from enddate at read time (see models.derive_status),
never stored. Warranties link to assets many-to-many via warrantyassets, though
the common case is one warranty per asset.
"""

from datetime import date, datetime

from flask import Blueprint, request
from flask_jwt_extended import jwt_required

from shopdb.api import (
    db, Asset,
    success_response, error_response, ErrorCodes,
    require_permission,
)

from ..models import Warranty, WarrantyAsset
from ..services import get_provider, ProviderNotConfigured, WarrantyLookupError

warranty_bp = Blueprint('warranty', __name__)


def _parse_date(value):
    """Accept 'YYYY-MM-DD' (or None/empty) -> date or None."""
    if not value:
        return None
    try:
        return datetime.strptime(value[:10], '%Y-%m-%d').date()
    except (ValueError, TypeError):
        return None


def _asset_summary(asset):
    return {
        'assetid': asset.assetid,
        'assetnumber': asset.assetnumber,
        'name': asset.name,
        'assettypename': asset.assettype.assettype if asset.assettype else None,
    }


def _warranty_payload(warranty, today=None):
    """to_dict plus the linked-asset summaries."""
    data = warranty.to_dict(today)
    assets = []
    for link in warranty.links:
        asset = Asset.query.get(link.assetid)
        if asset:
            assets.append(_asset_summary(asset))
    data['assets'] = assets
    return data


def _apply_links(warranty, assetids):
    """Replace a warranty's asset links with the given asset id list."""
    if assetids is None:
        return
    wanted = {int(a) for a in assetids if str(a).strip()}
    existing = {link.assetid: link for link in warranty.links}
    for assetid in wanted - set(existing):
        if Asset.query.get(assetid):
            warranty.links.append(WarrantyAsset(assetid=assetid))
    for assetid in set(existing) - wanted:
        warranty.links.remove(existing[assetid])


# =============================================================================
# CRUD
# =============================================================================

@warranty_bp.route('', methods=['GET'])
@jwt_required(optional=True)
def list_warranties():
    """List warranties. Filters: ?status=, ?assetid=, ?active=false."""
    query = Warranty.query
    if request.args.get('active', 'true').lower() != 'false':
        query = query.filter_by(isactive=True)
    assetid = request.args.get('assetid', type=int)
    if assetid:
        query = (query.join(WarrantyAsset, WarrantyAsset.warrantyid == Warranty.warrantyid)
                      .filter(WarrantyAsset.assetid == assetid))
    warranties = query.order_by(Warranty.enddate.is_(None), Warranty.enddate).all()

    today = date.today()
    items = [_warranty_payload(w, today) for w in warranties]

    status_filter = request.args.get('status')
    if status_filter:
        items = [i for i in items if i['status'] == status_filter]
    return success_response(items)


@warranty_bp.route('/asset/<int:assetid>', methods=['GET'])
@jwt_required(optional=True)
def warranties_for_asset(assetid):
    """Warranties covering one asset (for the asset-detail panel)."""
    links = WarrantyAsset.query.filter_by(assetid=assetid).all()
    today = date.today()
    items = []
    for link in links:
        w = Warranty.query.get(link.warrantyid)
        if w and w.isactive:
            items.append(_warranty_payload(w, today))
    return success_response(items)


@warranty_bp.route('/<int:warrantyid>', methods=['GET'])
@jwt_required(optional=True)
def get_warranty(warrantyid):
    warranty = Warranty.query.get(warrantyid)
    if not warranty:
        return error_response(ErrorCodes.NOT_FOUND, 'Warranty not found', http_code=404)
    return success_response(_warranty_payload(warranty))


@warranty_bp.route('', methods=['POST'])
@jwt_required()
@require_permission('warranty.create')
def create_warranty():
    data = request.get_json() or {}
    vendor = (data.get('vendor') or '').strip()
    if not vendor:
        return error_response(ErrorCodes.VALIDATION_ERROR, 'vendor is required')
    warranty = Warranty(
        vendor=vendor,
        servicetag=(data.get('servicetag') or '').strip() or None,
        provider=(data.get('provider') or 'manual').strip().lower(),
        servicelevel=(data.get('servicelevel') or '').strip() or None,
        startdate=_parse_date(data.get('startdate')),
        enddate=_parse_date(data.get('enddate')),
        notes=(data.get('notes') or '').strip() or None,
    )
    _apply_links(warranty, data.get('assetids'))
    db.session.add(warranty)
    db.session.commit()
    return success_response(_warranty_payload(warranty), message='Warranty created', http_code=201)


@warranty_bp.route('/<int:warrantyid>', methods=['PUT'])
@jwt_required()
@require_permission('warranty.edit')
def update_warranty(warrantyid):
    warranty = Warranty.query.get(warrantyid)
    if not warranty:
        return error_response(ErrorCodes.NOT_FOUND, 'Warranty not found', http_code=404)
    data = request.get_json() or {}
    if 'vendor' in data:
        warranty.vendor = (data['vendor'] or '').strip() or warranty.vendor
    if 'servicetag' in data:
        warranty.servicetag = (data['servicetag'] or '').strip() or None
    if 'provider' in data:
        warranty.provider = (data['provider'] or 'manual').strip().lower()
    if 'servicelevel' in data:
        warranty.servicelevel = (data['servicelevel'] or '').strip() or None
    if 'startdate' in data:
        warranty.startdate = _parse_date(data['startdate'])
    if 'enddate' in data:
        warranty.enddate = _parse_date(data['enddate'])
    if 'notes' in data:
        warranty.notes = (data['notes'] or '').strip() or None
    if 'isactive' in data:
        warranty.isactive = bool(data['isactive'])
    if 'assetids' in data:
        _apply_links(warranty, data['assetids'])
    db.session.commit()
    return success_response(_warranty_payload(warranty), message='Warranty updated')


@warranty_bp.route('/<int:warrantyid>', methods=['DELETE'])
@jwt_required()
@require_permission('warranty.delete')
def delete_warranty(warrantyid):
    warranty = Warranty.query.get(warrantyid)
    if not warranty:
        return error_response(ErrorCodes.NOT_FOUND, 'Warranty not found', http_code=404)
    db.session.delete(warranty)
    db.session.commit()
    return success_response(message='Warranty deleted')


# =============================================================================
# Provider refresh (phase 1: manual only; API providers report not-configured)
# =============================================================================

@warranty_bp.route('/<int:warrantyid>/refresh', methods=['POST'])
@jwt_required()
@require_permission('warranty.edit')
def refresh_warranty(warrantyid):
    warranty = Warranty.query.get(warrantyid)
    if not warranty:
        return error_response(ErrorCodes.NOT_FOUND, 'Warranty not found', http_code=404)
    provider = get_provider(warranty.provider)
    try:
        result = provider.lookup(warranty.servicetag, warranty.vendor)
    except (ProviderNotConfigured, WarrantyLookupError) as exc:
        return error_response(ErrorCodes.VALIDATION_ERROR, str(exc), http_code=400)
    if not result:
        return error_response(ErrorCodes.VALIDATION_ERROR,
                              'This warranty is manual - nothing to refresh.', http_code=400)
    if result.get('servicelevel'):
        warranty.servicelevel = result['servicelevel']
    if result.get('startdate'):
        warranty.startdate = _parse_date(result['startdate'])
    if result.get('enddate'):
        warranty.enddate = _parse_date(result['enddate'])
    warranty.lastcheckeddate = datetime.utcnow()
    db.session.commit()
    return success_response(_warranty_payload(warranty), message='Warranty refreshed')


# =============================================================================
# Report buckets (for the Reports hub)
# =============================================================================

@warranty_bp.route('/report', methods=['GET'])
@jwt_required(optional=True)
def warranty_report():
    """Counts + lists bucketed by derived status."""
    today = date.today()
    buckets = {'expired': [], 'expiring': [], 'active': [], 'unknown': []}
    for w in Warranty.query.filter_by(isactive=True).all():
        buckets.setdefault(w.status(today), []).append(_warranty_payload(w, today))
    return success_response({
        'counts': {k: len(v) for k, v in buckets.items()},
        'buckets': buckets,
    })