from __future__ import annotations

from fastapi import APIRouter, Depends
from sqlmodel import Session

from ..connectors.sonarr import SonarrConnector
from ..db.session import get_session
from ..services.approval_service import create_approval
from ..services.audit_logger import log_event
from ..services.job_runner import complete_job, create_job, set_job_progress, start_job
from ..services.policy_engine import evaluate_policy
from .connector_runtime import load_connector_runtime

router = APIRouter(prefix='/api/apps/sonarr', dependencies=[Depends(load_connector_runtime)])


_ADD_SERIES_STEPS = [
    'Validate payload',
    'Evaluate policy',
    'Resolve root folder / quality profile defaults',
    'Add series in Sonarr',
    'Optional search missing episodes',
    'Verify series exists',
    'Complete audit/job',
]


@router.get('/health')
def health():
    return SonarrConnector().health()


@router.get('/queue')
def queue():
    return SonarrConnector().queue_status()


@router.get('/wanted')
def wanted():
    return SonarrConnector().wanted_missing()


@router.get('/search')
def search(q: str = ''):
    query = q.strip()
    if not query:
        return {'success': False, 'status': 'error', 'message': 'query_required', 'items': []}
    return SonarrConnector().search_series(query)


@router.post('/series')
def add_series(payload: dict, session: Session = Depends(get_session)):
    action = 'sonarr.add_series'
    target = 'sonarr'
    source = str(payload.get('source', 'manual')).strip() or 'manual'
    policy = evaluate_policy(session=session, action=action, target=target, source=source)
    risk = str(policy.get('risk', 'low'))

    if policy['decision'] == 'blocked':
        audit = log_event(
            session,
            source='action',
            identity=source,
            action_id=action,
            target=target,
            risk=risk,
            policy_decision='blocked',
            reason=policy['reason'],
            result='blocked',
            execution_plan={'plan': _ADD_SERIES_STEPS, 'policyReason': policy['reason']},
        )
        return {
            'success': False,
            'decision': 'blocked',
            'status': 'failed',
            'policy_decision': 'blocked',
            'result': 'blocked',
            'message': policy['reason'],
            'auditId': audit.id,
        }

    if policy['decision'] == 'approval_required':
        approval = create_approval(
            session,
            action=action,
            target=target,
            source=source,
            risk=risk,
            reason=policy['reason'],
            requester=source,
        )
        audit = log_event(
            session,
            source='action',
            identity=source,
            action_id=action,
            target=target,
            risk=risk,
            policy_decision='approval_required',
            reason=policy['reason'],
            result='approval_requested',
            execution_plan={'plan': _ADD_SERIES_STEPS, 'approvalId': approval.id},
            redacted_metadata={'approval_id': approval.id},
        )
        return {
            'success': False,
            'decision': 'approval_required',
            'status': 'failed',
            'policy_decision': 'approval_required',
            'result': 'approval_required',
            'message': 'Action requires approval before execution.',
            'approvalId': approval.id,
            'auditId': audit.id,
        }

    job = create_job(
        session,
        action_id=action,
        target=target,
        source=source,
        risk=risk,
        policy_decision='allowed',
        steps=_ADD_SERIES_STEPS,
    )
    start_job(session, job)
    set_job_progress(session, job, 35, 'Payload validated and policy allowed.')

    connector_result = SonarrConnector().add_series(payload)
    success = bool(connector_result.get('success'))
    result_status = 'succeeded' if success else 'failed'
    message = str(connector_result.get('message', 'series_added' if success else 'sonarr_failed'))

    completed = complete_job(
        session,
        job,
        status=result_status,
        result_summary=message,
    )
    audit = log_event(
        session,
        source='action',
        identity=source,
        action_id=action,
        target=target,
        risk=risk,
        policy_decision='allowed',
        reason=policy['reason'],
        result='success' if success else 'failed',
        execution_plan={'plan': _ADD_SERIES_STEPS, 'jobId': completed.id},
        after_state={'status': connector_result.get('status'), 'message': message},
        redacted_metadata={'connector': 'sonarr'},
    )

    if not success:
        return {
            'success': False,
            'decision': 'failed',
            'status': 'failed',
            'policy_decision': 'allowed',
            'result': 'failed',
            'message': message,
            'jobId': completed.id,
            'auditId': audit.id,
            'data': connector_result.get('data'),
        }

    return {
        'success': True,
        'decision': 'allowed',
        'status': 'success',
        'policy_decision': 'allowed',
        'result': 'success',
        'message': message,
        'jobId': completed.id,
        'auditId': audit.id,
        'data': connector_result.get('data', {}),
    }