"""
Publisher ViewSet
Phase 5: Sites Renderer & Publishing
"""
from rest_framework import status, viewsets
from rest_framework.decorators import action
from rest_framework.response import Response

from igny8_core.api.base import SiteSectorModelViewSet
from igny8_core.api.permissions import IsAuthenticatedAndActive, IsEditorOrAbove
from igny8_core.api.response import success_response, error_response
from igny8_core.api.throttles import DebugScopedRateThrottle
from igny8_core.business.publishing.models import PublishingRecord, DeploymentRecord
from igny8_core.business.publishing.services.publisher_service import PublisherService
from igny8_core.business.site_building.models import SiteBlueprint


class PublishingRecordViewSet(SiteSectorModelViewSet):
    """
    ViewSet for PublishingRecord model.
    """
    queryset = PublishingRecord.objects.select_related('content', 'site_blueprint')
    permission_classes = [IsAuthenticatedAndActive, IsEditorOrAbove]
    throttle_scope = 'publisher'
    throttle_classes = [DebugScopedRateThrottle]
    
    def get_serializer_class(self):
        # Will be created in next step
        from rest_framework import serializers
        
        class PublishingRecordSerializer(serializers.ModelSerializer):
            class Meta:
                model = PublishingRecord
                fields = '__all__'
        
        return PublishingRecordSerializer


class DeploymentRecordViewSet(SiteSectorModelViewSet):
    """
    ViewSet for DeploymentRecord model.
    """
    queryset = DeploymentRecord.objects.select_related('site_blueprint')
    permission_classes = [IsAuthenticatedAndActive, IsEditorOrAbove]
    throttle_scope = 'publisher'
    throttle_classes = [DebugScopedRateThrottle]
    
    def get_serializer_class(self):
        # Will be created in next step
        from rest_framework import serializers
        
        class DeploymentRecordSerializer(serializers.ModelSerializer):
            class Meta:
                model = DeploymentRecord
                fields = '__all__'
        
        return DeploymentRecordSerializer


class PublisherViewSet(viewsets.ViewSet):
    """
    Publisher actions for publishing content and sites.
    """
    permission_classes = [IsAuthenticatedAndActive, IsEditorOrAbove]
    throttle_scope = 'publisher'
    throttle_classes = [DebugScopedRateThrottle]
    
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.publisher_service = PublisherService()
    
    @action(detail=False, methods=['post'], url_path='publish')
    def publish(self, request):
        """
        Publish content or site to destinations.
        
        Request body:
        {
            "content_id": 123,  # Optional: content to publish
            "site_blueprint_id": 456,  # Optional: site to publish
            "destinations": ["wordpress", "sites"]  # Required: list of destinations
        }
        """
        content_id = request.data.get('content_id')
        site_blueprint_id = request.data.get('site_blueprint_id')
        destinations = request.data.get('destinations', [])
        
        if not destinations:
            return error_response(
                'destinations is required',
                status.HTTP_400_BAD_REQUEST,
                request
            )
        
        account = request.account
        
        if site_blueprint_id:
            # Publish site
            try:
                blueprint = SiteBlueprint.objects.get(id=site_blueprint_id, account=account)
            except SiteBlueprint.DoesNotExist:
                return error_response(
                    f'Site blueprint {site_blueprint_id} not found',
                    status.HTTP_404_NOT_FOUND,
                    request
                )
            
            if 'sites' in destinations:
                result = self.publisher_service.publish_to_sites(blueprint)
                return success_response(result, request=request)
            else:
                return error_response(
                    'Site publishing only supports "sites" destination',
                    status.HTTP_400_BAD_REQUEST,
                    request
                )
        
        elif content_id:
            # Publish content
            result = self.publisher_service.publish_content(
                content_id,
                destinations,
                account
            )
            return success_response(result, request=request)
        
        else:
            return error_response(
                'Either content_id or site_blueprint_id is required',
                status.HTTP_400_BAD_REQUEST,
                request
            )
    
    @action(detail=False, methods=['post'], url_path='deploy/(?P<blueprint_id>[^/.]+)')
    def deploy(self, request, blueprint_id):
        """
        Deploy site blueprint to Sites renderer.
        
        POST /api/v1/publisher/deploy/{blueprint_id}/
        """
        account = request.account
        
        try:
            blueprint = SiteBlueprint.objects.get(id=blueprint_id, account=account)
        except SiteBlueprint.DoesNotExist:
            return error_response(
                f'Site blueprint {blueprint_id} not found',
                status.HTTP_404_NOT_FOUND,
                request
            )
        
        result = self.publisher_service.publish_to_sites(blueprint)
        
        response_status = status.HTTP_202_ACCEPTED if result.get('success') else status.HTTP_400_BAD_REQUEST
        return success_response(result, request=request, status_code=response_status)
    
    @action(detail=False, methods=['get'], url_path='status/(?P<id>[^/.]+)')
    def get_status(self, request, id):
        """
        Get publishing/deployment status.
        
        GET /api/v1/publisher/status/{id}/
        """
        account = request.account
        
        # Try deployment record first
        try:
            deployment = DeploymentRecord.objects.get(id=id, account=account)
            return success_response({
                'type': 'deployment',
                'status': deployment.status,
                'version': deployment.version,
                'deployed_version': deployment.deployed_version,
                'deployment_url': deployment.deployment_url,
                'deployed_at': deployment.deployed_at,
                'error_message': deployment.error_message,
            }, request=request)
        except DeploymentRecord.DoesNotExist:
            pass
        
        # Try publishing record
        try:
            publishing = PublishingRecord.objects.get(id=id, account=account)
            return success_response({
                'type': 'publishing',
                'status': publishing.status,
                'destination': publishing.destination,
                'destination_url': publishing.destination_url,
                'published_at': publishing.published_at,
                'error_message': publishing.error_message,
            }, request=request)
        except PublishingRecord.DoesNotExist:
            return error_response(
                f'Record {id} not found',
                status.HTTP_404_NOT_FOUND,
                request
            )