Pre-generation Workflowfor Real-time Video Agents

# Pre-generation Workflow for Video Agents
import asyncio
import httpx
from datetime import datetime

class AgentVideoPreGenerator:
    def __init__(self, api_key: str, cache_url: str):
        self.api_key = api_key
        self.cache_url = cache_url
        self.base_url = "https://api.creativeai.run/v1"
    
    async def pregenerate_batch(self, prompts: list[str]) -> list[str]:
        """Pre-generate videos for upcoming agent calls."""
        
        # Submit batch of videos
        batch_request = {
            "videos": [
                {
                    "prompt": prompt,
                    "model": "kling-v3",
                    "duration": 5,
                    "aspect_ratio": "16:9"
                }
                for prompt in prompts
            ],
            "webhook_url": f"{self.cache_url}/webhook/complete",
            "failover": True  # Auto-switch to backup model
        }
        
        async with httpx.AsyncClient() as client:
            response = await client.post(
                f"{self.base_url}/video/batch",
                json=batch_request,
                headers={
                    "Authorization": f"Bearer {self.api_key}",
                    "Content-Type": "application/json"
                }
            )
            
            batch = response.json()
            return batch["job_ids"]
    
    async def handle_webhook(self, payload: dict):
        """Process webhook completion - store in cache."""
        
        video_data = {
            "job_id": payload["id"],
            "video_url": payload["output"]["video_url"],
            "thumbnail_url": payload["output"]["thumbnail_url"],
            "prompt": payload["prompt"],
            "model": payload["model"],
            "cached_at": datetime.utcnow().isoformat(),
            "expires_at": datetime.utcnow().add(hours=24).isoformat()
        }
        
        # Store in your cache layer (Redis, S3, etc.)
        await self.cache_video(video_data)
        
        return {"status": "cached"}
    
    async def get_video_for_call(self, scenario: str) -> str:
        """Retrieve pre-generated video for live call."""
        
        # Match cached video to scenario
        cached = await self.cache.get(matching=scenario)
        
        if cached:
            return cached["video_url"]
        
        # Fallback: generate synchronously (not ideal)
        return await self.generate_fallback(scenario)

# Usage: Pre-generate during idle time
generator = AgentVideoPreGenerator(
    api_key="rph_live_...",
    cache_url="https://your-cache.example.com"
)

# Pre-generate common scenarios before calls
prompts = [
    "Professional greeting in office setting, friendly smile",
    "Explaining product features with hand gestures",
    "Nodding in agreement during conversation",
    "Thinking pause before responding",
    "Closing summary with wave goodbye"
]

# Run during low-traffic hours
job_ids = await generator.pregenerate_batch(prompts)