# app/api/v1/admin/marketplace.py
"""
Marketplace import job monitoring endpoints for admin.
"""

import logging

from fastapi import APIRouter, BackgroundTasks, Depends, Query
from sqlalchemy.orm import Session

from app.api.deps import get_current_admin_api
from app.core.database import get_db
from app.exceptions import ImportJobNotFoundException, VendorNotFoundException
from app.services.marketplace_import_job_service import marketplace_import_job_service
from app.services.stats_service import stats_service
from app.tasks.background_tasks import process_marketplace_import
from models.database.marketplace_import_job import MarketplaceImportJob
from models.database.user import User
from models.database.vendor import Vendor
from models.schema.marketplace_import_job import (
    AdminMarketplaceImportJobRequest,
    MarketplaceImportJobRequest,
    MarketplaceImportJobResponse,
)

router = APIRouter(prefix="/marketplace-import-jobs")
logger = logging.getLogger(__name__)


def _job_to_dict(job: MarketplaceImportJob) -> dict:
    """Convert a MarketplaceImportJob to a response dict with frontend-compatible fields."""
    return {
        "id": job.id,
        "job_id": job.id,
        "status": job.status,
        "marketplace": job.marketplace,
        "source_url": job.source_url,
        "vendor_id": job.vendor.id if job.vendor else None,
        "vendor_code": job.vendor.vendor_code if job.vendor else None,
        "vendor_name": job.vendor.name if job.vendor else None,
        "imported": job.imported_count or 0,
        "updated": job.updated_count or 0,
        "total_processed": job.total_processed or 0,
        "error_count": job.error_count or 0,
        "error_message": job.error_message,
        "error_details": [],  # Placeholder for future use
        "created_at": job.created_at.isoformat() if job.created_at else None,
        "started_at": job.started_at.isoformat() if job.started_at else None,
        "completed_at": job.completed_at.isoformat() if job.completed_at else None,
        "created_by_name": job.user.username if job.user else None,
    }


@router.get("")
def get_all_marketplace_import_jobs(
    marketplace: str | None = Query(None),
    status: str | None = Query(None),
    page: int = Query(1, ge=1),
    limit: int = Query(100, ge=1, le=100),
    db: Session = Depends(get_db),
    current_admin: User = Depends(get_current_admin_api),
):
    """Get all marketplace import jobs with pagination (Admin only)."""
    query = db.query(MarketplaceImportJob)

    if marketplace:
        query = query.filter(
            MarketplaceImportJob.marketplace.ilike(f"%{marketplace}%")
        )
    if status:
        query = query.filter(MarketplaceImportJob.status == status)

    total = query.count()
    skip = (page - 1) * limit
    jobs = (
        query.order_by(MarketplaceImportJob.created_at.desc())
        .offset(skip)
        .limit(limit)
        .all()
    )

    return {
        "items": [_job_to_dict(job) for job in jobs],
        "total": total,
        "page": page,
        "limit": limit,
    }


@router.post("", response_model=MarketplaceImportJobResponse)
async def create_marketplace_import_job(
    request: AdminMarketplaceImportJobRequest,
    background_tasks: BackgroundTasks,
    db: Session = Depends(get_db),
    current_admin: User = Depends(get_current_admin_api),
):
    """
    Create a new marketplace import job (Admin only).

    Admins can trigger imports for any vendor by specifying vendor_id.
    The import is processed asynchronously in the background.
    """
    vendor = db.query(Vendor).filter(Vendor.id == request.vendor_id).first()
    if not vendor:
        raise VendorNotFoundException(str(request.vendor_id), identifier_type="id")

    job_request = MarketplaceImportJobRequest(
        source_url=request.source_url,
        marketplace=request.marketplace,
        batch_size=request.batch_size,
    )

    job = marketplace_import_job_service.create_import_job(
        db=db,
        request=job_request,
        vendor=vendor,
        user=current_admin,
    )

    logger.info(
        f"Admin {current_admin.username} created import job {job.id} "
        f"for vendor {vendor.vendor_code}"
    )

    background_tasks.add_task(
        process_marketplace_import,
        job.id,
        request.source_url,
        request.marketplace,
        vendor.id,
        request.batch_size or 1000,
    )

    return marketplace_import_job_service.convert_to_response_model(job)


# NOTE: /stats must be defined BEFORE /{job_id} to avoid route conflicts
@router.get("/stats")
def get_import_statistics(
    db: Session = Depends(get_db),
    current_admin: User = Depends(get_current_admin_api),
):
    """Get marketplace import statistics (Admin only)."""
    return stats_service.get_import_statistics(db)


@router.get("/{job_id}")
def get_marketplace_import_job(
    job_id: int,
    db: Session = Depends(get_db),
    current_admin: User = Depends(get_current_admin_api),
):
    """Get a single marketplace import job by ID (Admin only)."""
    job = (
        db.query(MarketplaceImportJob)
        .filter(MarketplaceImportJob.id == job_id)
        .first()
    )
    if not job:
        raise ImportJobNotFoundException(job_id)

    return _job_to_dict(job)