/** Shared contracts for the official XFT OpenAPI adapter. */
export interface AuthenticatedDingTalkUser {
  userId: string;
  name?: string;
}

export interface XftTodoItem {
  source: "xft";
  billId: string;
  taskId?: string;
  eventSeqId?: string;
  title?: string;
  applicantName?: string;
  applicantDepartment?: string;
  applyTime?: string;
  amount?: number;
  currency?: string;
  reason?: string;
  allowPass?: boolean;
  allowReject?: boolean;
  eventType?: string;
}

export type ApprovalHistoryScope = "handled" | "submitted";

export interface ApprovalHistoryRange {
  startTime: number;
  endTime: number;
}

export interface XftHistoryItem extends Omit<XftTodoItem, "allowPass" | "allowReject"> {
  historyScope: ApprovalHistoryScope;
  status?: string;
  statusName?: string;
  completedAt?: string;
}

export type XftApprovalAction = "agree" | "reject" | "return";

export interface XftApprovalBatchItem {
  billId: string;
  targetNodeId?: string;
}

export type XftApprovalBatchResultItem =
  | { billId: string; status: "succeeded"; success: true }
  | { billId: string; status: "failed"; success: false; failureConfirmed: true; error: string }
  | {
      billId: string;
      status: "outcome_uncertain";
      success: false;
      outcomeUncertain: true;
      error: string;
    };

export type XftSubmissionKind =
  | "travel_apply"
  | "expense_apply"
  | "entertainment_apply"
  | "common_apply"
  | "use_car_apply"
  | "common_reimburse"
  | "travel_reimburse";

export interface XftSubmissionTemplate {
  eventSeqId: string;
  eventNumber: string;
  eventName: string;
  eventType: string;
  kind: XftSubmissionKind;
}

export interface XftSubmissionField {
  fieldNumber: string;
  name: string;
  type: string;
  required: boolean;
  description?: string;
  multiple?: boolean;
  options?: XftSubmissionOption[];
  enumLabels?: Record<string, string>;
  moduleType?: string;
  valueFormat?: string;
  itemFields?: Array<Record<string, unknown>>;
  optionSource?: {
    tool: "approval_get_submission_options";
    kind: XftSubmissionOptionKind;
  };
  selectionCapability?: XftSubmissionSelectionCapability;
}

export type XftSubmissionOptionKind = "department" | "city" | "expense_type";

export interface XftSubmissionOption {
  code: string;
  label: string;
}

export type XftSubmissionSelectionCapability =
  | {
      status: "supported";
      userInput: "label";
      submitValue: "code";
      exposeInternalValue: false;
    }
  | {
      status: "client_only";
      reason: string;
    };

export interface XftApprovalProvider {
  authStatus(user: AuthenticatedDingTalkUser): Promise<{
    authenticated: true;
    identity: Record<string, unknown>;
    binding: Record<string, unknown>;
    persistedBusinessData: false;
  }>;
  listMyTodos(user: AuthenticatedDingTalkUser, limit: number, search?: string): Promise<{
    items: XftTodoItem[];
    totalCount: number;
    identity: Record<string, unknown>;
    diagnostics: Record<string, unknown>;
  }>;
  listMyHistory(
    user: AuthenticatedDingTalkUser,
    scope: ApprovalHistoryScope,
    limit: number,
    search: string,
    range: ApprovalHistoryRange,
  ): Promise<{
    items: XftHistoryItem[];
    totalCount: number;
    diagnostics: Record<string, unknown>;
  }>;
  getTodoDetail(user: AuthenticatedDingTalkUser, billId: string): Promise<Record<string, unknown>>;
  getHistoryDetail(
    user: AuthenticatedDingTalkUser,
    scope: ApprovalHistoryScope,
    billId: string,
  ): Promise<Record<string, unknown>>;
  listReturnNodes(user: AuthenticatedDingTalkUser, billId: string): Promise<{
    billId: string;
    nodes: Array<{ nodeId: string; nodeName?: string; approverNames?: string[] }>;
    requirements: {
      commentRequired: boolean;
      signatureRequired: boolean;
      canSkipPreviouslyApprovedNodes: boolean;
    };
    diagnostics: Record<string, unknown>;
  }>;
  processApprovalBatch(
    user: AuthenticatedDingTalkUser,
    action: XftApprovalAction,
    remark: string,
    items: XftApprovalBatchItem[],
  ): Promise<{
    action: XftApprovalAction;
    total: number;
    succeeded: number;
    failed: number;
    results: XftApprovalBatchResultItem[];
    diagnostics: Record<string, unknown>;
  }>;
  listSubmissionTemplates(user: AuthenticatedDingTalkUser, limit: number, search?: string): Promise<XftSubmissionTemplate[]>;
  getSubmissionSchema(user: AuthenticatedDingTalkUser, template: XftSubmissionTemplate): Promise<{
    template: XftSubmissionTemplate;
    fields: XftSubmissionField[];
    inputContract: Record<string, unknown>;
    diagnostics: Record<string, unknown>;
  }>;
  getSubmissionOptions(
    user: AuthenticatedDingTalkUser,
    template: XftSubmissionTemplate,
    kind: XftSubmissionOptionKind,
    query?: string,
    limit?: number,
  ): Promise<{
    kind: XftSubmissionOptionKind;
    items: XftSubmissionOption[];
    total?: number;
    hasMore?: boolean;
    diagnostics: Record<string, unknown>;
  }>;
  validateSubmissionIdentity(user: AuthenticatedDingTalkUser): Promise<{
    validated: true;
    diagnostics: Record<string, unknown>;
  }>;
  submitApproval(
    user: AuthenticatedDingTalkUser,
    template: XftSubmissionTemplate,
    values: Record<string, unknown>,
  ): Promise<{ billId: string; status: "submitted"; diagnostics: Record<string, unknown> }>;
  recallSubmission(
    user: AuthenticatedDingTalkUser,
    billId: string,
    reason?: string,
  ): Promise<{ status: "revoked" | "failed" | "outcome_uncertain"; billId: string; message?: string; diagnostics: Record<string, unknown> }>;
  getMySubmissionStatus(
    user: AuthenticatedDingTalkUser,
    billId: string,
  ): Promise<{
    billId: string;
    status: string;
    statusName: string;
    approvalStatus?: string;
    revoked: boolean;
    revokeAllowed: boolean;
    flowHistory?: Array<{ nodeName?: string; actions: string[] }>;
    diagnostics: Record<string, unknown>;
  }>;
}

/** Success codes observed on the documented XFT OpenAPI endpoints. */
export function isXftSuccessCode(code: string | undefined): boolean {
  if (code === undefined || code === "") return true;
  return ["0", "200", "SUCCESS", "SUC0000", "000000", "0000000"].includes(code.toUpperCase());
}