"""System endpoints for core OS operations"""
from fastapi import APIRouter, Depends
from sqlalchemy.ext.asyncio import AsyncSession
from datetime import datetime
import os

from app.config import settings
from app.database import get_db

router = APIRouter(prefix="/api/system", tags=["system"])


@router.get("/version")
async def get_version():
    """
    Get system version and build information

    Returns version, build time, environment, and git information
    """
    # Try to get git SHA if available
    git_sha = os.environ.get("GIT_SHA", "development")

    return {
        "version": settings.APP_VERSION,
        "build_time": datetime.utcnow().isoformat(),
        "env": settings.ENVIRONMENT,
        "git_sha": git_sha[:8] if len(git_sha) > 8 else git_sha,
        "app_name": settings.APP_NAME,
    }


@router.get("/config/public")
async def get_public_config():
    """
    Get public configuration (non-sensitive settings only)

    Returns feature flags, environment info, and public settings
    """
    return {
        "environment": settings.ENVIRONMENT,
        "app_name": settings.APP_NAME,
        "version": settings.APP_VERSION,
        "features": {
            "blockchain_enabled": True,
            "ai_agents_enabled": True,
            "video_streaming_enabled": True,
            "gaming_enabled": True,
            "social_enabled": True,
        },
        "limits": {
            "max_upload_size_mb": 100,
            "session_timeout_minutes": 60,
        },
        "external_services": {
            "github_integration": bool(os.environ.get("GITHUB_TOKEN")),
            "stripe_enabled": bool(os.environ.get("STRIPE_SECRET_KEY")),
            "openai_enabled": bool(os.environ.get("OPENAI_API_KEY")),
        },
    }


@router.get("/os/state")
async def get_os_state(db: AsyncSession = Depends(get_db)):
    """
    Get current OS state (stub for now)

    Returns the current state of the OS including:
    - Active windows
    - Running applications
    - System resources
    """
    # TODO: Integrate with core_os module when implemented
    return {
        "status": "ok",
        "uptime_seconds": 0,  # TODO: Track actual uptime
        "active_windows": [],
        "running_apps": [],
        "system_resources": {
            "memory_usage_percent": 0,
            "cpu_usage_percent": 0,
        },
        "note": "This is a stub endpoint. Full OS state tracking coming in Phase 2.",
    }