import asyncio import json import os from abc import ABC, abstractmethod from datetime import datetime, timezone from typing import Dict, Any, Optional, List import croniter import pytz from services.supabase import DBConnection from services.supabase import DBConnection from utils.logger import logger from utils.config import config, EnvMode from .trigger_service import Trigger, TriggerEvent, TriggerResult, TriggerType class TriggerProvider(ABC): def __init__(self, provider_id: str, trigger_type: TriggerType): self.provider_id = provider_id self.trigger_type = trigger_type @abstractmethod async def validate_config(self, config: Dict[str, Any]) -> Dict[str, Any]: pass @abstractmethod async def setup_trigger(self, trigger: Trigger) -> bool: pass @abstractmethod async def teardown_trigger(self, trigger: Trigger) -> bool: pass @abstractmethod async def process_event(self, trigger: Trigger, event: TriggerEvent) -> TriggerResult: pass class ScheduleProvider(TriggerProvider): def __init__(self): super().__init__("schedule", TriggerType.SCHEDULE) # This should point to your backend base URL since Supabase Cron will POST to backend self._webhook_base_url = os.getenv("WEBHOOK_BASE_URL", "http://localhost:8000") self._db = DBConnection() async def validate_config(self, config: Dict[str, Any]) -> Dict[str, Any]: if 'cron_expression' not in config: raise ValueError("cron_expression is required for scheduled triggers") execution_type = config.get('execution_type', 'agent') if execution_type not in ['agent', 'workflow']: raise ValueError("execution_type must be either 'agent' or 'workflow'") if execution_type == 'agent' and 'agent_prompt' not in config: raise ValueError("agent_prompt is required for agent execution") elif execution_type == 'workflow' and 'workflow_id' not in config: raise ValueError("workflow_id is required for workflow execution") user_timezone = config.get('timezone', 'UTC') if user_timezone != 'UTC': try: pytz.timezone(user_timezone) except pytz.UnknownTimeZoneError: raise ValueError(f"Invalid timezone: {user_timezone}") try: croniter.croniter(config['cron_expression']) except Exception as e: raise ValueError(f"Invalid cron expression: {str(e)}") return config async def setup_trigger(self, trigger: Trigger) -> bool: try: webhook_url = f"{self._webhook_base_url}/api/triggers/{trigger.trigger_id}/webhook" cron_expression = trigger.config['cron_expression'] execution_type = trigger.config.get('execution_type', 'agent') user_timezone = trigger.config.get('timezone', 'UTC') if user_timezone != 'UTC': cron_expression = self._convert_cron_to_utc(cron_expression, user_timezone) payload = { "trigger_id": trigger.trigger_id, "agent_id": trigger.agent_id, "execution_type": execution_type, "agent_prompt": trigger.config.get('agent_prompt'), "workflow_id": trigger.config.get('workflow_id'), "workflow_input": trigger.config.get('workflow_input', {}), "timestamp": datetime.now(timezone.utc).isoformat() } headers: Dict[str, Any] = { "Content-Type": "application/json", "X-Trigger-Source": "schedule" } # Include simple shared secret header for backend auth secret = os.getenv("TRIGGER_WEBHOOK_SECRET") if secret: headers["X-Trigger-Secret"] = secret if config.ENV_MODE == EnvMode.STAGING: vercel_bypass_key = os.getenv("VERCEL_PROTECTION_BYPASS_KEY", "") if vercel_bypass_key: headers["X-Vercel-Protection-Bypass"] = vercel_bypass_key # Supabase Cron job names are case-sensitive; we keep a stable name per trigger job_name = f"trigger_{trigger.trigger_id}" # Schedule via Supabase Cron RPC helper client = await self._db.client try: result = await client.rpc( "schedule_trigger_http", { "job_name": job_name, "schedule": cron_expression, "url": webhook_url, "headers": headers, "body": payload, "timeout_ms": 8000, }, ).execute() except Exception as rpc_err: logger.error(f"Failed to schedule Supabase Cron job via RPC: {rpc_err}") return False trigger.config['cron_job_name'] = job_name try: trigger.config['cron_job_id'] = result.data except Exception: trigger.config['cron_job_id'] = None logger.info(f"Created Supabase Cron job '{job_name}' for trigger {trigger.trigger_id}") return True except Exception as e: logger.error(f"Failed to setup Supabase Cron schedule for trigger {trigger.trigger_id}: {e}") return False async def teardown_trigger(self, trigger: Trigger) -> bool: try: job_name = trigger.config.get('cron_job_name') or f"trigger_{trigger.trigger_id}" client = await self._db.client try: await client.rpc( "unschedule_job_by_name", {"job_name": job_name}, ).execute() logger.info(f"Unschedule requested for Supabase Cron job '{job_name}' (trigger {trigger.trigger_id})") return True except Exception as rpc_err: logger.warning(f"Failed to unschedule job '{job_name}' via RPC: {rpc_err}") return False except Exception as e: logger.error(f"Failed to teardown Supabase Cron schedule for trigger {trigger.trigger_id}: {e}") return False async def process_event(self, trigger: Trigger, event: TriggerEvent) -> TriggerResult: try: raw_data = event.raw_data execution_type = raw_data.get('execution_type', 'agent') execution_variables = { 'scheduled_time': raw_data.get('timestamp'), 'trigger_id': event.trigger_id, 'agent_id': event.agent_id } if execution_type == 'workflow': workflow_id = raw_data.get('workflow_id') workflow_input = raw_data.get('workflow_input', {}) if not workflow_id: raise ValueError("workflow_id is required for workflow execution") return TriggerResult( success=True, should_execute_workflow=True, workflow_id=workflow_id, workflow_input=workflow_input, execution_variables=execution_variables ) else: agent_prompt = raw_data.get('agent_prompt') if not agent_prompt: raise ValueError("agent_prompt is required for agent execution") return TriggerResult( success=True, should_execute_agent=True, agent_prompt=agent_prompt, execution_variables=execution_variables ) except Exception as e: return TriggerResult( success=False, error_message=f"Error processing schedule event: {str(e)}" ) def _convert_cron_to_utc(self, cron_expression: str, user_timezone: str) -> str: try: parts = cron_expression.split() if len(parts) != 5: return cron_expression minute, hour, day, month, weekday = parts if minute.startswith('*/') and hour == '*': return cron_expression if hour == '*' or minute == '*': return cron_expression try: user_tz = pytz.timezone(user_timezone) utc_tz = pytz.UTC now = datetime.now(user_tz) if hour.isdigit() and minute.isdigit(): user_time = user_tz.localize(datetime(now.year, now.month, now.day, int(hour), int(minute))) utc_time = user_time.astimezone(utc_tz) return f"{utc_time.minute} {utc_time.hour} {day} {month} {weekday}" except Exception as e: logger.warning(f"Failed to convert timezone for cron expression: {e}") return cron_expression except Exception as e: logger.error(f"Error converting cron expression to UTC: {e}") return cron_expression class WebhookProvider(TriggerProvider): def __init__(self): super().__init__("webhook", TriggerType.WEBHOOK) async def validate_config(self, config: Dict[str, Any]) -> Dict[str, Any]: return config async def setup_trigger(self, trigger: Trigger) -> bool: return True async def teardown_trigger(self, trigger: Trigger) -> bool: return True async def process_event(self, trigger: Trigger, event: TriggerEvent) -> TriggerResult: try: execution_variables = { 'webhook_data': event.raw_data, 'trigger_id': event.trigger_id, 'agent_id': event.agent_id } agent_prompt = f"Process webhook data: {json.dumps(event.raw_data)}" return TriggerResult( success=True, should_execute_agent=True, agent_prompt=agent_prompt, execution_variables=execution_variables ) except Exception as e: return TriggerResult( success=False, error_message=f"Error processing webhook event: {str(e)}" ) class ProviderService: def __init__(self, db_connection: DBConnection): self._db = db_connection self._providers: Dict[str, TriggerProvider] = {} self._initialize_providers() def _initialize_providers(self): self._providers["schedule"] = ScheduleProvider() self._providers["webhook"] = WebhookProvider() async def get_available_providers(self) -> List[Dict[str, Any]]: providers = [] for provider_id, provider in self._providers.items(): provider_info = { "provider_id": provider_id, "name": provider_id.title(), "description": f"{provider_id.title()} trigger provider", "trigger_type": provider.trigger_type.value, "webhook_enabled": True, "config_schema": self._get_provider_schema(provider_id) } providers.append(provider_info) return providers def _get_provider_schema(self, provider_id: str) -> Dict[str, Any]: if provider_id == "schedule": return { "type": "object", "properties": { "cron_expression": { "type": "string", "description": "Cron expression for scheduling" }, "execution_type": { "type": "string", "enum": ["agent", "workflow"], "description": "Type of execution" }, "agent_prompt": { "type": "string", "description": "Prompt for agent execution" }, "workflow_id": { "type": "string", "description": "ID of workflow to execute" }, "timezone": { "type": "string", "description": "Timezone for cron expression" } }, "required": ["cron_expression", "execution_type"] } elif provider_id == "webhook": return { "type": "object", "properties": { "webhook_secret": { "type": "string", "description": "Secret for webhook validation" } }, "required": [] } return {"type": "object", "properties": {}, "required": []} async def validate_trigger_config(self, provider_id: str, config: Dict[str, Any]) -> Dict[str, Any]: provider = self._providers.get(provider_id) if not provider: raise ValueError(f"Unknown provider: {provider_id}") return await provider.validate_config(config) async def get_provider_trigger_type(self, provider_id: str) -> TriggerType: provider = self._providers.get(provider_id) if not provider: raise ValueError(f"Unknown provider: {provider_id}") return provider.trigger_type async def setup_trigger(self, trigger: Trigger) -> bool: provider = self._providers.get(trigger.provider_id) if not provider: logger.error(f"Unknown provider: {trigger.provider_id}") return False return await provider.setup_trigger(trigger) async def teardown_trigger(self, trigger: Trigger) -> bool: provider = self._providers.get(trigger.provider_id) if not provider: logger.error(f"Unknown provider: {trigger.provider_id}") return False return await provider.teardown_trigger(trigger) async def process_event(self, trigger: Trigger, event: TriggerEvent) -> TriggerResult: provider = self._providers.get(trigger.provider_id) if not provider: return TriggerResult( success=False, error_message=f"Unknown provider: {trigger.provider_id}" ) return await provider.process_event(trigger, event) def get_provider_service(db_connection: DBConnection) -> ProviderService: return ProviderService(db_connection)