import heapq
import json
import time
from dataclasses import dataclass
from pathlib import Path
from typing import Any, Dict, List, Optional, Tuple


@dataclass(order=True)
class _Job:
    priority: int
    submitted_at: float
    job_id: str
    payload: Dict[str, Any]


class QuantumProcessScheduler:
    def __init__(self) -> None:
        self._queue: List[_Job] = []

    def submit(self, job_id: str, payload: Dict[str, Any], priority: int = 10) -> None:
        heapq.heappush(self._queue, _Job(priority=priority, submitted_at=time.time(), job_id=job_id, payload=payload))

    def next_job(self) -> Optional[Dict[str, Any]]:
        if not self._queue:
            return None
        job = heapq.heappop(self._queue)
        return {"job_id": job.job_id, "payload": job.payload, "priority": job.priority}

    def queue_status(self) -> Dict[str, Any]:
        return {"queued": len(self._queue), "eta_seconds": len(self._queue) * 2}


class QuantumResourceManager:
    def __init__(self, total_qubits: int) -> None:
        self.total_qubits = total_qubits
        self._allocations: Dict[str, int] = {}

    def allocate(self, tenant: str, qubits: int) -> bool:
        used = sum(self._allocations.values())
        if used + qubits > self.total_qubits:
            return False
        self._allocations[tenant] = self._allocations.get(tenant, 0) + qubits
        return True

    def release(self, tenant: str, qubits: Optional[int] = None) -> None:
        if tenant not in self._allocations:
            return
        if qubits is None or qubits >= self._allocations[tenant]:
            del self._allocations[tenant]
        else:
            self._allocations[tenant] -= qubits

    def status(self) -> Dict[str, Any]:
        used = sum(self._allocations.values())
        return {"used": used, "free": self.total_qubits - used, "allocations": dict(self._allocations)}


class QuantumInterruptHandler:
    def handle(self, event: Dict[str, Any]) -> Dict[str, Any]:
        kind = event.get("type", "unknown")
        if kind == "hardware_failure":
            return {"action": "reroute", "status": "degraded"}
        if kind == "mid_circuit_error":
            return {"action": "retry_segment", "status": "recovering"}
        if kind == "cancel":
            return {"action": "cleanup", "status": "cancelled"}
        return {"action": "ignore", "status": "ok"}


class QuantumFileSystem:
    def __init__(self, root: str) -> None:
        self.root = Path(root)
        self.root.mkdir(parents=True, exist_ok=True)

    def write_result(self, name: str, payload: Dict[str, Any]) -> str:
        ts = int(time.time() * 1000)
        path = self.root / f"{name}_{ts}.json"
        path.write_text(json.dumps(payload, indent=2))
        return str(path)

    def list_results(self) -> List[str]:
        return sorted([str(p) for p in self.root.glob("*.json")])

    def read_result(self, path: str) -> Dict[str, Any]:
        return json.loads(Path(path).read_text())


class QuantumVirtualizationLayer:
    def __init__(self, physical_qubits: int) -> None:
        self.physical_qubits = physical_qubits
        self.tenants: Dict[str, Dict[str, Any]] = {}

    def provision(self, tenant: str, logical_qubits: int) -> Dict[str, Any]:
        mapping = {i: i % self.physical_qubits for i in range(logical_qubits)}
        vm = {"tenant": tenant, "logical_qubits": logical_qubits, "mapping": mapping}
        self.tenants[tenant] = vm
        return vm

    def isolate(self, tenant: str) -> bool:
        return tenant in self.tenants

    def translate(self, tenant: str, logical_qubit: int) -> int:
        return self.tenants[tenant]["mapping"][logical_qubit]
