import {z} from 'zod'

export type KybStatusEnum = 'PENDING' | 'PROCESSING' | 'NEED_TO_PROCESS' | 'NEED_TO_REVIEW' | 'COMPLETED';

export type NeedToStatusRequest = {status?: KybStatusEnum | undefined};

export type ApprovalStatusEnum = 'APPROVED' | 'DENIED';

export type ManualApproveRequest = {approvalStatus: ApprovalStatusEnum};

export type ManualDenyRequest = {approvalStatus: ApprovalStatusEnum, denyReason?: (string | null) | undefined};

export type ManualReviewRequest = ManualApproveRequest | ManualDenyRequest;

export type CompletedStatusRequest = {status?: KybStatusEnum | undefined, reviewInfo: ManualReviewRequest};

export type CompanyStatusRequest = NeedToStatusRequest | NeedToStatusRequest | CompletedStatusRequest;

export type CreateApiKybCompaniesIdChangeStatusArgs = {id: string, body: CompanyStatusRequest};

export type CreateApiKybCompaniesIdChangeStatusOptions = {baseUrl?: string | undefined, apiKeyPair?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const kybStatusEnum = z.enum(["PENDING", "PROCESSING", "NEED_TO_PROCESS", "NEED_TO_REVIEW", "COMPLETED"]);

export const needToStatus = z.object({status: kybStatusEnum.optional()});

export const approvalStatusEnum = z.enum(["APPROVED", "DENIED"]);

export const manualApprove = z.object({approvalStatus: approvalStatusEnum, denyReason: z.string().nullable()});

export const manualDeny = z.object({approvalStatus: approvalStatusEnum, denyReason: z.string().max(64).nullable().optional()});

export const manualReview = z.discriminatedUnion("approvalStatus", [manualApprove, manualDeny]);

export const completedStatus = z.object({status: kybStatusEnum.optional(), reviewInfo: manualReview});

export const companyStatus = z.discriminatedUnion("status", [needToStatus, needToStatus, completedStatus]);

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Change company status
 * 
 * POST /kyb/companies/{id}/change-status/
 */
export const createApiKybCompaniesIdChangeStatus = async (args: CreateApiKybCompaniesIdChangeStatusArgs, options?: CreateApiKybCompaniesIdChangeStatusOptions) => {
const {baseUrl = "https://ivs.idenfy.com", fetch: fetchFn = fetch, apiKeyPair} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (apiKeyPair !== undefined) headers.set('authorization', `Basic ${btoa(`${apiKeyPair.username}:${apiKeyPair.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/kyb/companies/${encodeURIComponent(String(args.id))}/change-status/${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(companyStatus, await res.json())
};