import time
from datetime import datetime

from adapters.cms_adapter import create_resource
from adapters.emby_adapter import exists_by_tmdb_id
from adapters.hdhive_adapter import normalize_resource, search_resource, unlock_link
from adapters.tmdb_adapter import get_media_detail
from error_handling import AppServiceError, normalize_exception
from storage import find_media_item, insert_log, upsert_media_item, upsert_task


def _extract_hdhive_items(hdhive_result):
    payload = (hdhive_result or {}).get("data")
    if isinstance(payload, dict) and isinstance(payload.get("data"), list):
        return payload.get("data") or []
    if isinstance(payload, list):
        return payload
    if isinstance(payload, dict):
        return payload.get("items") or []
    return []


def _extract_hdhive_unlock_data(unlock_result):
    payload = (unlock_result or {}).get("data")
    if isinstance(payload, dict) and isinstance(payload.get("data"), dict):
        return payload.get("data") or {}
    if isinstance(payload, dict):
        return payload
    return {}


def now_iso():
    return datetime.utcnow().isoformat() + "Z"


def new_task_id():
    return f"task_{int(time.time() * 1000)}"


def log(task_id, step, level, message, detail=None):
    insert_log(task_id, step, level, message, detail or {}, now_iso())


def run_ingest_task(payload):
    task_id = new_task_id()
    trace_id = f"{task_id}_{hex(int(time.time() * 1000))[-6:]}"
    task = {
        "taskId": task_id,
        "traceId": trace_id,
        "status": "RUNNING",
        "inputPayload": payload,
        "startedAt": now_iso(),
        "finishedAt": None,
        "summary": None,
    }
    upsert_task(task)
    log(task_id, "START", "INFO", "任务开始", {"payload": payload, "traceId": trace_id})

    try:
        deduped = find_media_item(payload["tmdbId"])
        if deduped and deduped.get("ingest_status") == "SUCCESS":
            task["status"] = "SUCCESS"
            task["finishedAt"] = now_iso()
            task["summary"] = {
                "result": "SKIPPED_ALREADY_EXISTS",
                "tmdbId": payload["tmdbId"],
                "cmsId": deduped.get("cms_id"),
            }
            upsert_task(task)
            log(task_id, "DEDUPE", "INFO", "命中本地幂等，跳过", task["summary"])
            return task

        tmdb_result = get_media_detail(payload["tmdbId"], payload["type"])
        log(task_id, "TMDB_DETAIL", "INFO", "TMDB 元数据获取成功", {"status": tmdb_result["status"]})

        hdhive_search = search_resource(payload["type"], payload["tmdbId"])
        hdhive_first = None
        search_data = _extract_hdhive_items(hdhive_search)
        preferred_slug = str(payload.get("slug") or "").strip()
        if search_data:
            if preferred_slug:
                hdhive_first = next(
                    (item for item in search_data if (item or {}).get("slug") == preferred_slug),
                    None,
                )
            if not hdhive_first:
                hdhive_first = search_data[0]
        if not hdhive_first:
            raise AppServiceError(
                "HDHIVE 未检索到可用资源",
                category="not_found",
                code="HDHIVE_RESOURCE_NOT_FOUND",
                provider="hdhive",
            )
        log(task_id, "HDHIVE_SEARCH", "INFO", "HDHIVE 检索成功")

        slug = hdhive_first.get("slug")
        if not slug:
            raise AppServiceError(
                "HDHIVE 返回资源缺少 slug，无法解锁",
                category="validation",
                code="HDHIVE_INVALID_RESOURCE",
                provider="hdhive",
            )
        hdhive_unlock = unlock_link(slug)
        normalized_resource = normalize_resource(hdhive_first, _extract_hdhive_unlock_data(hdhive_unlock))
        log(task_id, "HDHIVE_UNLOCK", "INFO", "HDHIVE 解锁成功", {"unlockUrl": normalized_resource["unlockUrl"]})

        emby_exists = exists_by_tmdb_id(payload["tmdbId"])
        log(task_id, "EMBY_EXISTS", "INFO", "Emby 查询完成", {"exists": emby_exists["exists"]})
        if emby_exists["exists"]:
            upsert_media_item(
                {
                    "tmdbId": payload["tmdbId"],
                    "type": payload["type"],
                    "title": tmdb_result["normalized"]["title"],
                    "year": tmdb_result["normalized"]["year"],
                    "tmdbRaw": tmdb_result["data"],
                    "hdhiveRaw": hdhive_search["data"],
                    "cmsId": None,
                    "ingestStatus": "SKIPPED_ALREADY_EXISTS",
                }
            )
            task["status"] = "SUCCESS"
            task["finishedAt"] = now_iso()
            task["summary"] = {"result": "SKIPPED_ALREADY_EXISTS", "source": "EMBY"}
            upsert_task(task)
            return task

        cms_payload = {
            "tmdbId": payload["tmdbId"],
            "mediaType": payload["type"],
            "title": tmdb_result["normalized"]["title"],
            "originalTitle": tmdb_result["normalized"]["originalTitle"],
            "year": tmdb_result["normalized"]["year"],
            "overview": tmdb_result["normalized"]["overview"],
            "posterPath": tmdb_result["normalized"]["posterPath"],
            "rating": tmdb_result["normalized"]["rating"],
            "genres": tmdb_result["normalized"]["genres"],
            "resource": {
                "title": normalized_resource["resourceTitle"],
                "quality": normalized_resource["quality"],
                "size": normalized_resource["size"],
                "diskType": normalized_resource["diskType"],
                "slug": normalized_resource["slug"],
                "source": normalized_resource["source"],
                "subtitleLanguage": normalized_resource["subtitleLanguage"],
                "unlockUrl": normalized_resource["unlockUrl"],
            },
            "traceId": trace_id,
        }
        cms_result = create_resource(cms_payload)
        cms_data = cms_result.get("data") or {}
        cms_id = (
            cms_data.get("id")
            or cms_data.get("resourceId")
            or (cms_data.get("data") or {}).get("id")
            or (cms_data.get("data") or {}).get("resourceId")
            or normalized_resource["slug"]
        )
        log(task_id, "CMS_CREATE", "INFO", "CMS 入库成功", {"cmsId": cms_id})

        upsert_media_item(
            {
                "tmdbId": payload["tmdbId"],
                "type": payload["type"],
                "title": tmdb_result["normalized"]["title"],
                "year": tmdb_result["normalized"]["year"],
                "tmdbRaw": tmdb_result["data"],
                "hdhiveRaw": hdhive_search["data"],
                "cmsId": cms_id,
                "ingestStatus": "SUCCESS",
            }
        )
        task["status"] = "SUCCESS"
        task["finishedAt"] = now_iso()
        task["summary"] = {"result": "CREATED", "cmsId": cms_id}
        upsert_task(task)
        return task
    except Exception as error:
        normalized_error = normalize_exception(error)
        log(task_id, "FAILED", "ERROR", str(normalized_error), normalized_error.to_dict())
        task["status"] = "FAILED"
        task["finishedAt"] = now_iso()
        task["summary"] = {"error": normalized_error.to_dict()}
        upsert_task(task)
        return task