"""火山引擎人像素材库 Assets API 客户端(AK/SK 签名)。

照搬自 AirDrama,改用 settings.ASSETS_API 凭证(暂借 AirDrama 已邀测账号,张业昌待换)。
同步调用,出错抛 AssetsAPIError。真人(person)基础资产生成后静默上传审核 → 轮询 active(绿)/failed(红)。
"""
import json
import logging

from django.conf import settings

logger = logging.getLogger(__name__)

SERVICE = "ark"
REGION = "cn-beijing"
API_VERSION = "2024-01-01"
HOST = "open.volcengineapi.com"

_ASSETS_ERROR_MESSAGES = {
    "ConfigError": "素材审核服务未配置(ASSETS_API_* 凭证)",
    "RequestError": "素材审核服务暂时不可用,请稍后重试",
    "InvalidParameter": "素材参数无效",
    "NotFound": "素材不存在或已被删除",
    "Forbidden": "没有权限操作该素材(检查 AK/SK)",
}


class AssetsAPIError(Exception):
    def __init__(self, code, message, status_code=400):
        self.code = code
        self.api_message = message
        self.status_code = status_code
        self.user_message = _ASSETS_ERROR_MESSAGES.get(code) or "素材审核操作失败,请稍后重试"
        super().__init__(f"[{code}] {message}")


def is_enabled() -> bool:
    cfg = getattr(settings, "ASSETS_API", {}) or {}
    return bool(cfg.get("enabled") and cfg.get("access_key") and cfg.get("secret_key"))


def _project() -> str:
    return (getattr(settings, "ASSETS_API", {}) or {}).get("project_name") or "int_dev_Airlabs"


def _get_service():
    """构建带 AK/SK 的 volcengine Service(延迟 import SDK,未装/未配不影响其它功能)。"""
    cfg = getattr(settings, "ASSETS_API", {}) or {}
    ak, sk = cfg.get("access_key"), cfg.get("secret_key")
    if not ak or not sk:
        raise AssetsAPIError("ConfigError", "ASSETS_API access_key / secret_key not configured")
    from volcengine.ApiInfo import ApiInfo
    from volcengine.base.Service import Service
    from volcengine.Credentials import Credentials
    from volcengine.ServiceInfo import ServiceInfo

    service_info = ServiceInfo(
        HOST,
        {"Accept": "application/json", "Content-Type": "application/json"},
        Credentials(ak, sk, SERVICE, REGION),
        10, 30,
    )
    actions = [
        "CreateAssetGroup", "CreateAsset", "ListAssetGroups", "ListAssets", "GetAsset", "DeleteAsset",
        # 自由创作素材库(组/素材全生命周期)
        "GetAssetGroup", "UpdateAssetGroup", "UpdateAsset", "DeleteAssetGroup",
    ]
    api_info = {a: ApiInfo("POST", "/", {"Action": a, "Version": API_VERSION}, {}, {}) for a in actions}
    return Service(service_info, api_info)


def _do_request(action: str, body_dict: dict) -> dict:
    service = _get_service()
    body = json.dumps(body_dict, ensure_ascii=False)
    try:
        resp = service.json(action, {}, body)
    except Exception as e:  # noqa: BLE001 — SDK 非 200 抛 Exception(resp.text.encode())
        raw = e.args[0] if e.args else ""
        error_str = raw.decode("utf-8") if isinstance(raw, bytes) else str(raw)
        logger.warning("Assets API %s error: %s", action, error_str[:300])
        try:
            err = json.loads(error_str).get("ResponseMetadata", {}).get("Error", {})
            if err:
                raise AssetsAPIError(err.get("Code", "Unknown"), err.get("Message", error_str))
        except json.JSONDecodeError:
            pass
        raise AssetsAPIError("RequestError", error_str or "Empty response")
    data = json.loads(resp) if isinstance(resp, str) else resp
    err = data.get("ResponseMetadata", {}).get("Error", {})
    if err:
        raise AssetsAPIError(err.get("Code", "Unknown"), err.get("Message", str(data)))
    return data.get("Result", {})


def create_asset_group(name: str, description: str = "", group_type: str = "AIGC") -> str:
    """建素材组,返回远程 group id。"""
    return _do_request(
        "CreateAssetGroup",
        {"Name": name, "Description": description, "GroupType": group_type, "ProjectName": _project()},
    ).get("Id", "")


def create_asset(group_id: str, image_url: str, name: str = "", asset_type: str = "Image") -> str:
    """往组里传一张素材(URL),返回远程 asset id;审核异步,稍后 get_asset 查状态。"""
    return _do_request(
        "CreateAsset",
        {"GroupId": group_id, "URL": image_url, "Name": name, "AssetType": asset_type, "ProjectName": _project()},
    ).get("Id", "")


def get_asset(asset_id: str) -> dict:
    """查单个素材详情(含审核 Status:Active/Failed/Processing、Url、ErrorMessage)。"""
    return _do_request("GetAsset", {"Id": asset_id, "ProjectName": _project()})


def list_asset_groups(page: int = 1, page_size: int = 20, name: str | None = None) -> tuple:
    filter_dict = {"GroupType": "AIGC"}
    if name:
        filter_dict["Name"] = name
    result = _do_request(
        "ListAssetGroups",
        {"Filter": filter_dict, "PageNumber": page, "PageSize": page_size, "ProjectName": _project()},
    )
    return result.get("Items", []), result.get("TotalCount", 0)


def list_assets(group_ids: list | None = None, status: str | None = None,
                name: str | None = None, page: int = 1, page_size: int = 20) -> tuple:
    """列组内素材。返回 (items, total_count)。"""
    filter_dict: dict = {"GroupType": "AIGC"}
    if group_ids:
        filter_dict["GroupIds"] = group_ids
    if status:
        filter_dict["Statuses"] = [status]
    if name:
        filter_dict["Name"] = name
    result = _do_request(
        "ListAssets",
        {"Filter": filter_dict, "PageNumber": page, "PageSize": page_size, "ProjectName": _project()},
    )
    return result.get("Items", []), result.get("TotalCount", 0)


def get_asset_group(group_id: str) -> dict:
    return _do_request("GetAssetGroup", {"Id": group_id, "ProjectName": _project()})


def update_asset_group(group_id: str, name: str | None = None, description: str | None = None) -> None:
    body: dict = {"Id": group_id, "ProjectName": _project()}
    if name is not None:
        body["Name"] = name
    if description is not None:
        body["Description"] = description
    _do_request("UpdateAssetGroup", body)


def update_asset(asset_id: str, name: str | None = None) -> None:
    body: dict = {"Id": asset_id, "ProjectName": _project()}
    if name is not None:
        body["Name"] = name
    _do_request("UpdateAsset", body)


def delete_asset(asset_id: str) -> None:
    _do_request("DeleteAsset", {"Id": asset_id, "ProjectName": _project()})


def delete_asset_group(group_id: str) -> None:
    """删组(远程级联删组内素材)。"""
    _do_request("DeleteAssetGroup", {"Id": group_id, "ProjectName": _project()})