"""
FastAPI сервер для 152-ФЗ Scanner.
REST API для запуска сканирования и получения отчетов.
"""
from fastapi import FastAPI, HTTPException, BackgroundTasks
from scanner.engine import ScannerEngine
from api.schemas import (
    HealthResponse,
    ScanRequest,
    ScanResultResponse,
    BatchScanResultResponse,
)

app = FastAPI(
    title="152-ФЗ Scanner API",
    description="Автоматизированный сканер для аудита сайтов по 152-ФЗ",
    version="1.0.0",
)

scanner = ScannerEngine()


@app.get("/health", response_model=HealthResponse, tags=["Health"])
async def health_check():
    """Проверка состояния API."""
    return HealthResponse(status="ok")


@app.post("/api/scan", tags=["Scan"])
async def scan_single(request: ScanRequest):
    """
    Просканировать один URL.
    
    Возвращает результаты всех проверок и итоговый балл.
    """
    try:
        result = await scanner.scan_url(request.url, request.checks)
        
        checks_passed = sum(1 for c in result.checks if c.status.value == "pass")
        checks_failed = sum(1 for c in result.checks if c.status.value == "fail")
        checks_errors = sum(1 for c in result.checks if c.status.value == "error")

        return ScanResultResponse(
            scan_id=result.url.replace("://", "_").replace("/", "_")[:30],
            url=result.url,
            score=result.score,
            is_compliant=result.is_compliant,
            summary=result.summary,
            checks_passed=checks_passed,
            checks_failed=checks_failed,
            checks_errors=checks_errors,
        )
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@app.post("/api/scan/batch", tags=["Scan"])
async def scan_batch(request: BatchScanResultResponse):
    """
    Просканировать несколько URL.
    
    Запрос: {"urls": ["https://site1.ru", "https://site2.ru"], "checks": [...]}
    """
    from scanner.engine import scanner_engine

    try:
        results = await scanner_engine.scan_urls_batch(request.urls, request.checks)

        scan_results = []
        for r in results:
            checks_passed = sum(1 for c in r.checks if c.status.value == "pass")
            checks_failed = sum(1 for c in r.checks if c.status.value == "fail")
            checks_errors = sum(1 for c in r.checks if c.status.value == "error")

            scan_results.append(ScanResultResponse(
                scan_id=r.url.replace("://", "_").replace("/", "_")[:30],
                url=r.url,
                score=r.score,
                is_compliant=r.is_compliant,
                summary=r.summary,
                checks_passed=checks_passed,
                checks_failed=checks_failed,
                checks_errors=checks_errors,
            ))

        compliant_count = sum(1 for r in scan_results if r.is_compliant)

        return BatchScanResultResponse(
            scan_id="batch",
            total=len(scan_results),
            results=scan_results,
            compliant_count=compliant_count,
            non_compliant_count=len(scan_results) - compliant_count,
        )
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@app.get("/api/results", tags=["Results"])
async def get_results():
    """Получить список всех выполненных сканирований."""
    return {"message": "Результаты хранятся в памяти (v1). В будущем будет JSON-файл или БД."}