export type AttachmentGovernanceStatus =
  | "draft"
  | "under_approval"
  | "pending_review"
  | "approved"
  | "archived"
  | "returned"
  | "rejected"
  | "quarantined";

export type AttachmentSensitivityLevel =
  | "public"
  | "internal"
  | "confidential"
  | "restricted"
  | "index_only";

export type BusinessAttachmentType =
  | "contract_draft"
  | "contract_stamped"
  | "invoice"
  | "receipt"
  | "quote"
  | "acceptance"
  | "delivery"
  | "policy_document"
  | "supporting_material"
  | "other";

export type AttachmentDownloadPolicy = "standard" | "reason_required" | "restricted";

export type AttachmentGovernanceFields = {
  governanceStatus: AttachmentGovernanceStatus | string;
  sensitivityLevel: AttachmentSensitivityLevel | string;
  attachmentType: BusinessAttachmentType | string;
  downloadPolicy: AttachmentDownloadPolicy | string;
  reviewedBy: string | null;
  reviewedAt: string | null;
  reviewNote: string | null;
  archivedBy: string | null;
  archivedAt: string | null;
  archiveNote: string | null;
};

export const GOVERNANCE_STATUS_LABEL: Record<string, string> = {
  draft: "草稿",
  under_approval: "审批中",
  pending_review: "待复核",
  approved: "已通过",
  archived: "已归档",
  returned: "已退回",
  rejected: "已拒绝",
  quarantined: "已隔离",
};

export const SENSITIVITY_LEVEL_LABEL: Record<string, string> = {
  public: "公开",
  internal: "内部",
  confidential: "保密",
  restricted: "受限",
  index_only: "仅索引",
};

export const ATTACHMENT_TYPE_LABEL: Record<string, string> = {
  contract_draft: "合同稿",
  contract_stamped: "盖章件",
  invoice: "发票",
  receipt: "回单",
  quote: "报价",
  acceptance: "验收",
  delivery: "交付物",
  policy_document: "制度资料",
  supporting_material: "补充材料",
  other: "其他",
};

export function attachmentRequiresDownloadReason(attachment: Pick<AttachmentGovernanceFields, "downloadPolicy" | "sensitivityLevel">) {
  return (
    attachment.downloadPolicy === "reason_required" ||
    attachment.downloadPolicy === "restricted" ||
    attachment.sensitivityLevel === "confidential" ||
    attachment.sensitivityLevel === "restricted"
  );
}

export function buildAttachmentFileUrl(path: string, reason?: string) {
  const trimmed = reason?.trim();
  if (!trimmed) return path;
  const params = new URLSearchParams({ reason: trimmed });
  return `${path}${path.includes("?") ? "&" : "?"}${params.toString()}`;
}