"""
generate_data.py - Standalone script to simulate plugin telemetry data.

This script connects to the plugin WebSocket at /ws/position and sends
fabricated TelemetrySnapshot payloads at regular intervals. Useful for:
  - Functional testing of the telemetry ingestion pipeline
  - Demonstrating real-time map updates without a live game client
"""
import asyncio       # Async event loop and sleep support
import websockets    # WebSocket client for Python
import json          # JSON serialization of payloads
from datetime import datetime, timedelta, timezone
from main import TelemetrySnapshot  # Pydantic model matches plugin protocol


async def main() -> None:
    """
    Continuously emit synthetic telemetry snapshots at fixed intervals.

    Updates in-game coordinates (ew, ns) gradually and increments
    an 'online_time' counter to mimic real gameplay progression.
    Each iteration:
      1. Build TelemetrySnapshot with current state
      2. Serialize to JSON, set 'type' field
      3. Send over WebSocket
      4. Sleep for 'wait' seconds
    """
    # Interval between snapshots (seconds)
    wait = 10
    # Simulated total online time in seconds (starting at 24h)
    online_time = 24 * 3600
    # Starting coordinates (E/W and N/S)
    ew = 0.0
    ns = 0.0
    # WebSocket endpoint for plugin telemetry (include secret for auth)
    uri = "ws://localhost:8000/ws/position?secret=your_shared_secret"
    # Connect to the plugin WebSocket endpoint with authentication
    # Establish WebSocket connection to the server
    async with websockets.connect(uri) as websocket:
        print(f"Connected to {uri}")
        # Loop indefinitely, sending telemetry at each interval
        while True:
            # Construct a new TelemetrySnapshot dataclass instance
            snapshot = TelemetrySnapshot(
                character_name="Test name",
                char_tag="test_tag",
                session_id="test_session_id",
                timestamp=datetime.now(tz=timezone.utc),
                ew=ew,
                ns=ns,
                z=0,
                kills=0,
                kills_per_hour="kph_str",
                onlinetime=str(timedelta(seconds=online_time)),
                deaths=0,
                # rares_found removed from telemetry payload; tracked via rare events
                prismatic_taper_count=0,
                vt_state="test state",
            )
            # Prepare payload dictionary:
            #  - Convert Pydantic model to dict
            #  - Remove any extraneous fields (e.g., 'rares_found')
            #  - Insert message 'type' for server routing
            payload = snapshot.model_dump()
            payload.pop("rares_found", None)
            payload["type"] = "telemetry"
            # Send JSON-encoded payload over WebSocket
            # Transmit JSON payload (datetime serialized via default=str)
            await websocket.send(json.dumps(payload, default=str))
            print(f"Sent snapshot: EW={ew:.2f}, NS={ns:.2f}")
            # Wait before next update, then increment simulated state
            await asyncio.sleep(wait)
            ew += 0.1
            ns += 0.1
            online_time += wait


if __name__ == "__main__":
    asyncio.run(main())