feat: implement DashboardWidgetProvider pattern for modular dashboard widgets

Add protocol-based widget system following the MetricsProvider pattern:

- Create DashboardWidgetProviderProtocol in contracts/widgets.py
- Add WidgetAggregatorService in core to discover and aggregate widgets
- Implement MarketplaceWidgetProvider for recent_imports widget
- Implement TenancyWidgetProvider for recent_vendors widget
- Update admin dashboard to use widget_aggregator
- Add widget_provider field to ModuleDefinition

Architecture documentation:
- Add widget-provider-pattern.md with implementation guide
- Add cross-module-import-rules.md enforcing core/optional separation
- Update module-system.md with widget_provider and import rules

This enables modules to provide rich dashboard widgets without core modules
importing from optional modules, maintaining true module independence.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
2026-02-04 19:01:23 +01:00
parent a8fae0fbc7
commit 3e38db79aa
13 changed files with 1906 additions and 25 deletions

View File

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# app/modules/marketplace/services/marketplace_widgets.py
"""
Marketplace dashboard widget provider.
Provides widgets for marketplace-related data on vendor and admin dashboards.
Implements the DashboardWidgetProviderProtocol.
Widgets provided:
- recent_imports: List of recent import jobs with status
"""
import logging
from sqlalchemy.orm import Session
from app.modules.contracts.widgets import (
DashboardWidget,
DashboardWidgetProviderProtocol,
ListWidget,
WidgetContext,
WidgetListItem,
)
logger = logging.getLogger(__name__)
class MarketplaceWidgetProvider:
"""
Widget provider for marketplace module.
Provides dashboard widgets for import jobs and other marketplace data.
"""
@property
def widgets_category(self) -> str:
return "marketplace"
def _map_status_to_display(self, status: str) -> str:
"""Map job status to widget status indicator."""
status_map = {
"pending": "neutral",
"processing": "warning",
"completed": "success",
"completed_with_errors": "warning",
"failed": "error",
}
return status_map.get(status, "neutral")
def get_vendor_widgets(
self,
db: Session,
vendor_id: int,
context: WidgetContext | None = None,
) -> list[DashboardWidget]:
"""
Get marketplace widgets for a vendor dashboard.
Args:
db: Database session
vendor_id: ID of the vendor
context: Optional filtering/scoping context
Returns:
List of DashboardWidget objects for the vendor
"""
from app.modules.marketplace.models import MarketplaceImportJob
limit = context.limit if context else 5
# Get recent imports for this vendor
jobs = (
db.query(MarketplaceImportJob)
.filter(MarketplaceImportJob.vendor_id == vendor_id)
.order_by(MarketplaceImportJob.created_at.desc())
.limit(limit)
.all()
)
items = [
WidgetListItem(
id=job.id,
title=f"Import #{job.id}",
subtitle=f"{job.marketplace} - {job.language.upper()}",
status=self._map_status_to_display(job.status),
timestamp=job.created_at,
url=f"/vendor/marketplace/imports/{job.id}",
metadata={
"total_processed": job.total_processed or 0,
"imported_count": job.imported_count or 0,
"error_count": job.error_count or 0,
"status": job.status,
},
)
for job in jobs
]
# Get total count for "view all" indicator
total_count = (
db.query(MarketplaceImportJob)
.filter(MarketplaceImportJob.vendor_id == vendor_id)
.count()
)
return [
DashboardWidget(
key="marketplace.recent_imports",
widget_type="list",
title="Recent Imports",
category="marketplace",
data=ListWidget(
items=items,
total_count=total_count,
view_all_url="/vendor/marketplace/imports",
),
icon="download",
description="Latest product import jobs",
order=20,
)
]
def get_platform_widgets(
self,
db: Session,
platform_id: int,
context: WidgetContext | None = None,
) -> list[DashboardWidget]:
"""
Get marketplace widgets for the admin/platform dashboard.
Args:
db: Database session
platform_id: ID of the platform
context: Optional filtering/scoping context
Returns:
List of DashboardWidget objects for the platform
"""
from sqlalchemy.orm import joinedload
from app.modules.marketplace.models import MarketplaceImportJob
from app.modules.tenancy.models import Vendor, VendorPlatform
limit = context.limit if context else 5
# Get vendor IDs for this platform
vendor_ids_subquery = (
db.query(VendorPlatform.vendor_id)
.filter(VendorPlatform.platform_id == platform_id)
.subquery()
)
# Get recent imports across all vendors in the platform
jobs = (
db.query(MarketplaceImportJob)
.options(joinedload(MarketplaceImportJob.vendor))
.filter(MarketplaceImportJob.vendor_id.in_(vendor_ids_subquery))
.order_by(MarketplaceImportJob.created_at.desc())
.limit(limit)
.all()
)
items = [
WidgetListItem(
id=job.id,
title=f"Import #{job.id}",
subtitle=job.vendor.name if job.vendor else "Unknown Vendor",
status=self._map_status_to_display(job.status),
timestamp=job.created_at,
url=f"/admin/marketplace/imports/{job.id}",
metadata={
"vendor_id": job.vendor_id,
"vendor_code": job.vendor.vendor_code if job.vendor else None,
"marketplace": job.marketplace,
"total_processed": job.total_processed or 0,
"imported_count": job.imported_count or 0,
"error_count": job.error_count or 0,
"status": job.status,
},
)
for job in jobs
]
# Get total count for platform
total_count = (
db.query(MarketplaceImportJob)
.filter(MarketplaceImportJob.vendor_id.in_(vendor_ids_subquery))
.count()
)
return [
DashboardWidget(
key="marketplace.recent_imports",
widget_type="list",
title="Recent Imports",
category="marketplace",
data=ListWidget(
items=items,
total_count=total_count,
view_all_url="/admin/marketplace/letzshop",
),
icon="download",
description="Latest product import jobs across all vendors",
order=20,
)
]
# Singleton instance
marketplace_widget_provider = MarketplaceWidgetProvider()
__all__ = ["MarketplaceWidgetProvider", "marketplace_widget_provider"]