"""Approval Center API — enhanced approval queue with SLA tracking."""

from fastapi import APIRouter
from pydantic import BaseModel as PydanticBase
from typing import Any, Dict, Optional

router = APIRouter(prefix="/approval-center", tags=["Approval Center"])


class ApprovalAction(PydanticBase):
    note: Optional[str] = None


@router.get("/")
async def list_approvals(
    category: Optional[str] = None,
    priority: Optional[str] = None,
    status: Optional[str] = "pending",
) -> Dict[str, Any]:
    """List pending approvals with SLA status."""
    return {"approvals": [], "total": 0}


@router.get("/stats")
async def approval_stats() -> Dict[str, Any]:
    """Get approval velocity and SLA compliance."""
    return {
        "total_pending": 0,
        "sla_compliant": 0,
        "sla_warning": 0,
        "sla_breach": 0,
        "avg_approval_time_hours": 0.0,
    }


@router.get("/my-pending")
async def my_pending_approvals() -> Dict[str, Any]:
    """Get approvals assigned to current user."""
    return {"approvals": [], "total": 0}


@router.post("/{approval_id}/approve")
async def approve(approval_id: str, body: ApprovalAction) -> Dict[str, Any]:
    """Approve a request."""
    return {"id": approval_id, "status": "approved", "note": body.note}


@router.post("/{approval_id}/reject")
async def reject(approval_id: str, body: ApprovalAction) -> Dict[str, Any]:
    """Reject a request."""
    return {"id": approval_id, "status": "rejected", "note": body.note}


@router.post("/{approval_id}/escalate")
async def escalate(approval_id: str, body: ApprovalAction) -> Dict[str, Any]:
    """Escalate a request."""
    return {"id": approval_id, "status": "escalated", "note": body.note}