import asyncio
import logging
from datetime import datetime, timezone

from fastapi import Depends, FastAPI, HTTPException

from app.adapters.iris import IrisAdapter
from app.adapters.pagerduty import PagerDutyAdapter
from app.adapters.shuffle import ShuffleAdapter
from app.adapters.wazuh import WazuhAdapter
from app.config import settings
from app.db import init_schema
from app.models import (
    ActionCreateIncidentRequest,
    ApiResponse,
    ShuffleLoginRequest,
    ShuffleProxyRequest,
    TriggerShuffleRequest,
    WazuhIngestRequest,
)
from app.repositories.mvp_repo import MvpRepository
from app.routes.mvp import build_mvp_router
from app.security import require_internal_api_key
from app.services.mvp_service import MvpService

app = FastAPI(title=settings.app_name, version="0.1.0")
logger = logging.getLogger(__name__)

wazuh_adapter = WazuhAdapter(
    base_url=settings.wazuh_base_url,
    username=settings.wazuh_username,
    password=settings.wazuh_password,
    indexer_url=settings.wazuh_indexer_url,
    indexer_username=settings.wazuh_indexer_username,
    indexer_password=settings.wazuh_indexer_password,
)
shuffle_adapter = ShuffleAdapter(
    base_url=settings.shuffle_base_url,
    api_key=settings.shuffle_api_key,
)
pagerduty_adapter = PagerDutyAdapter(
    base_url=settings.pagerduty_base_url,
    api_key=settings.pagerduty_api_key,
)
iris_adapter = IrisAdapter(
    base_url=settings.iris_base_url,
    api_key=settings.iris_api_key,
)

repo = MvpRepository()
mvp_service = MvpService(
    repo=repo,
    wazuh_adapter=wazuh_adapter,
    shuffle_adapter=shuffle_adapter,
    iris_adapter=iris_adapter,
    pagerduty_adapter=pagerduty_adapter,
)
app.include_router(build_mvp_router(mvp_service, require_internal_api_key))


async def _wazuh_auto_sync_loop() -> None:
    interval = max(5, int(settings.wazuh_auto_sync_interval_seconds))
    while True:
        started_at = datetime.now(timezone.utc).isoformat()
        try:
            app.state.wazuh_auto_sync_state["running"] = True
            app.state.wazuh_auto_sync_state["last_started_at"] = started_at
            result = await mvp_service.sync_wazuh_alerts(
                query=settings.wazuh_auto_sync_query,
                limit=settings.wazuh_auto_sync_limit,
                minutes=settings.wazuh_auto_sync_minutes,
            )
            app.state.wazuh_auto_sync_state["last_status"] = "ok"
            app.state.wazuh_auto_sync_state["last_result"] = result
            app.state.wazuh_auto_sync_state["last_finished_at"] = datetime.now(timezone.utc).isoformat()
            logger.info(
                "wazuh auto-sync processed=%s ingested=%s skipped=%s failed=%s ioc_evaluated=%s ioc_matched=%s ioc_rejected=%s",
                result.get("processed", 0),
                result.get("ingested", 0),
                result.get("skipped_existing", 0),
                result.get("failed", 0),
                result.get("ioc_evaluated", 0),
                result.get("ioc_matched", 0),
                result.get("ioc_rejected", 0),
            )
        except Exception as exc:
            app.state.wazuh_auto_sync_state["last_status"] = "error"
            app.state.wazuh_auto_sync_state["last_error"] = str(exc)
            app.state.wazuh_auto_sync_state["last_finished_at"] = datetime.now(timezone.utc).isoformat()
            logger.exception("wazuh auto-sync failed: %s", exc)
        finally:
            app.state.wazuh_auto_sync_state["running"] = False
        await asyncio.sleep(interval)


@app.on_event("startup")
async def startup() -> None:
    init_schema()
    repo.ensure_policy()
    app.state.wazuh_auto_sync_state = {
        "running": False,
        "last_status": None,
        "last_started_at": None,
        "last_finished_at": None,
        "last_error": None,
        "last_result": None,
    }
    if settings.wazuh_auto_sync_enabled:
        app.state.wazuh_auto_sync_task = asyncio.create_task(_wazuh_auto_sync_loop())
        logger.info(
            "wazuh auto-sync enabled interval=%ss limit=%s minutes=%s query=%s",
            settings.wazuh_auto_sync_interval_seconds,
            settings.wazuh_auto_sync_limit,
            settings.wazuh_auto_sync_minutes,
            settings.wazuh_auto_sync_query,
        )


@app.on_event("shutdown")
async def shutdown() -> None:
    task = getattr(app.state, "wazuh_auto_sync_task", None)
    if task:
        task.cancel()
        try:
            await task
        except asyncio.CancelledError:
            pass


@app.get("/health", response_model=ApiResponse)
async def health() -> ApiResponse:
    return ApiResponse(
        data={
            "service": settings.app_name,
            "env": settings.app_env,
            "targets": {
                "wazuh": settings.wazuh_base_url,
                "shuffle": settings.shuffle_base_url,
                "pagerduty": settings.pagerduty_base_url,
                "iris": settings.iris_base_url,
            },
        }
    )


@app.post("/ingest/wazuh-alert", response_model=ApiResponse)
async def ingest_wazuh_alert(payload: WazuhIngestRequest) -> ApiResponse:
    normalized = {
        "source": payload.source,
        "alert_id": payload.alert_id,
        "rule_id": payload.rule_id,
        "severity": payload.severity,
        "title": payload.title,
        "payload": payload.payload,
    }
    return ApiResponse(data={"normalized": normalized})


@app.post("/action/create-incident", response_model=ApiResponse)
async def create_incident(payload: ActionCreateIncidentRequest) -> ApiResponse:
    incident_payload = {
        "title": payload.title,
        "urgency": payload.severity,
        "incident_key": payload.dedupe_key,
        "body": payload.payload,
        "source": payload.source,
    }
    try:
        pd_result = await pagerduty_adapter.create_incident(incident_payload)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"PagerDuty call failed: {exc}") from exc
    return ApiResponse(data={"pagerduty": pd_result})


@app.post("/action/trigger-shuffle", response_model=ApiResponse)
async def trigger_shuffle(payload: TriggerShuffleRequest) -> ApiResponse:
    try:
        shuffle_result = await shuffle_adapter.trigger_workflow(
            workflow_id=payload.workflow_id,
            payload=payload.execution_argument,
        )
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": shuffle_result})


@app.get("/shuffle/health", response_model=ApiResponse)
async def shuffle_health() -> ApiResponse:
    try:
        result = await shuffle_adapter.health()
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.get("/shuffle/auth-test", response_model=ApiResponse)
async def shuffle_auth_test() -> ApiResponse:
    try:
        result = await shuffle_adapter.auth_test()
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.post("/shuffle/login", response_model=ApiResponse)
async def shuffle_login(payload: ShuffleLoginRequest) -> ApiResponse:
    try:
        result = await shuffle_adapter.login(payload.username, payload.password)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.post("/shuffle/generate-apikey", response_model=ApiResponse)
async def shuffle_generate_apikey(payload: ShuffleLoginRequest | None = None) -> ApiResponse:
    username = payload.username if payload else settings.shuffle_username
    password = payload.password if payload else settings.shuffle_password
    if not username or not password:
        raise HTTPException(
            status_code=400,
            detail="Missing shuffle credentials. Provide username/password in body or set SHUFFLE_USERNAME and SHUFFLE_PASSWORD.",
        )

    try:
        result = await shuffle_adapter.generate_apikey_from_login(username, password)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.get("/shuffle/workflows", response_model=ApiResponse)
async def shuffle_workflows() -> ApiResponse:
    try:
        result = await shuffle_adapter.list_workflows()
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.get("/shuffle/workflows/{workflow_id}", response_model=ApiResponse)
async def shuffle_workflow(workflow_id: str) -> ApiResponse:
    try:
        result = await shuffle_adapter.get_workflow(workflow_id)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.post("/shuffle/workflows/{workflow_id}/execute", response_model=ApiResponse)
async def shuffle_workflow_execute(
    workflow_id: str, payload: dict[str, object]
) -> ApiResponse:
    try:
        result = await shuffle_adapter.trigger_workflow(workflow_id=workflow_id, payload=payload)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.get("/shuffle/apps", response_model=ApiResponse)
async def shuffle_apps() -> ApiResponse:
    try:
        result = await shuffle_adapter.list_apps()
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.post("/shuffle/proxy", response_model=ApiResponse)
async def shuffle_proxy(payload: ShuffleProxyRequest) -> ApiResponse:
    path = payload.path if payload.path.startswith("/api/") else f"/api/v1/{payload.path.lstrip('/')}"
    try:
        result = await shuffle_adapter.proxy(
            method=payload.method,
            path=path,
            params=payload.params,
            payload=payload.payload,
        )
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Shuffle call failed: {exc}") from exc
    return ApiResponse(data={"shuffle": result})


@app.post("/action/create-iris-case", response_model=ApiResponse)
async def create_iris_case(payload: ActionCreateIncidentRequest) -> ApiResponse:
    # IRIS v2 expects case_name, case_description, case_customer, case_soc_id.
    case_payload = {
        "case_name": payload.title,
        "case_description": payload.payload.get("description", "Created by soc-integrator"),
        "case_customer": payload.payload.get("case_customer", settings.iris_default_customer_id),
        "case_soc_id": payload.payload.get("case_soc_id", settings.iris_default_soc_id),
    }
    try:
        iris_result = await iris_adapter.create_case(case_payload)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"IRIS call failed: {exc}") from exc
    return ApiResponse(data={"iris": iris_result})


@app.get("/sync/wazuh-version", response_model=ApiResponse)
async def sync_wazuh_version() -> ApiResponse:
    try:
        wazuh_result = await wazuh_adapter.get_version()
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Wazuh call failed: {exc}") from exc
    return ApiResponse(data={"wazuh": wazuh_result})


@app.get("/wazuh/auth-test", response_model=ApiResponse)
async def wazuh_auth_test() -> ApiResponse:
    try:
        result = await wazuh_adapter.auth_test()
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Wazuh auth failed: {exc}") from exc
    return ApiResponse(data={"wazuh": result})


@app.get("/wazuh/manager-info", response_model=ApiResponse)
async def wazuh_manager_info() -> ApiResponse:
    try:
        result = await wazuh_adapter.get_manager_info()
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Wazuh call failed: {exc}") from exc
    return ApiResponse(data={"wazuh": result})


@app.get("/wazuh/agents", response_model=ApiResponse)
async def wazuh_agents(
    limit: int = 50,
    offset: int = 0,
    select: str | None = None,
) -> ApiResponse:
    try:
        result = await wazuh_adapter.list_agents(limit=limit, offset=offset, select=select)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Wazuh call failed: {exc}") from exc
    return ApiResponse(data={"wazuh": result})


@app.get("/wazuh/alerts", response_model=ApiResponse)
async def wazuh_alerts(
    limit: int = 50,
    offset: int = 0,
    q: str | None = None,
    sort: str | None = None,
) -> ApiResponse:
    try:
        # In this Wazuh build, API alerts are exposed via manager logs.
        result = await wazuh_adapter.list_manager_logs(
            limit=limit, offset=offset, q=q, sort=sort
        )
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Wazuh call failed: {exc}") from exc
    return ApiResponse(data={"wazuh": result})


@app.get("/wazuh/manager-logs", response_model=ApiResponse)
async def wazuh_manager_logs(
    limit: int = 50,
    offset: int = 0,
    q: str | None = None,
    sort: str | None = None,
) -> ApiResponse:
    try:
        result = await wazuh_adapter.list_manager_logs(
            limit=limit, offset=offset, q=q, sort=sort
        )
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Wazuh call failed: {exc}") from exc
    return ApiResponse(data={"wazuh": result})


@app.post("/wazuh/sync-to-mvp", response_model=ApiResponse, dependencies=[Depends(require_internal_api_key)])
async def wazuh_sync_to_mvp(
    limit: int = 50,
    minutes: int = 120,
    q: str = "soc_mvp_test=true OR event_type:*",
) -> ApiResponse:
    try:
        result = await mvp_service.sync_wazuh_alerts(query=q, limit=limit, minutes=minutes)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"Wazuh sync failed: {exc}") from exc
    return ApiResponse(data={"sync": result})


@app.get("/wazuh/auto-sync/status", response_model=ApiResponse)
async def wazuh_auto_sync_status() -> ApiResponse:
    state = getattr(app.state, "wazuh_auto_sync_state", {})
    task = getattr(app.state, "wazuh_auto_sync_task", None)
    return ApiResponse(
        data={
            "enabled": settings.wazuh_auto_sync_enabled,
            "task_running": bool(task and not task.done()),
            "settings": {
                "interval_seconds": settings.wazuh_auto_sync_interval_seconds,
                "limit": settings.wazuh_auto_sync_limit,
                "minutes": settings.wazuh_auto_sync_minutes,
                "query": settings.wazuh_auto_sync_query,
            },
            "state": state,
        }
    )