import {z} from 'zod'

export type GetApiLoansArgs = {limit?: number | undefined, starting_after?: string | undefined, sort_order?: ('asc' | 'desc') | undefined, start_date?: string | undefined, end_date?: string | undefined, status?: ('approved' | 'ready_for_disbursement' | 'pending_disbursement' | 'active' | 'paused' | 'closed') | undefined};

export type GetApiLoansOptions = {baseUrl?: string | undefined, sec0?: string | undefined, fetch?: typeof fetch | undefined};

export const loanDisbursementDetailsConnectedAccountId = z.string();

export const loanDisbursementDetailsInternalAccountId = z.string();

export const loanDisbursementDetailsReceivingAccountId = z.string();

export const loanRepaymentDetailsDirectDebit = z.object({direct_debit_mandate_id: z.string().optional()});

export const loanRepaymentDetailsCreditTransfer = z.object({receiving_account_id: z.string().optional()});

export const commonCustomFields = z.object({});

export const loanDetails = z.object({id: z.string(), object: z.string(), status: z.enum(["approved", "ready_for_disbursement", "pending_disbursement", "active", "paused", "closed"]), amount: z.number().int().gte(0), currency: z.string(), credit_arrangement_id: z.string().optional(), cbs_credit_arrangement_id: z.string().optional(), cbs_source: z.literal("mambu"), cbs_account_type: z.literal("loan"), cbs_account_id: z.string(), disbursement_details: z.object({connected_account_id: loanDisbursementDetailsConnectedAccountId.optional(), internal_account_id: loanDisbursementDetailsInternalAccountId.optional(), receiving_account_id: loanDisbursementDetailsReceivingAccountId.optional(), related_payment_order_ids: z.array(z.string()).optional()}).optional(), repayment_details: z.object({direct_debit: loanRepaymentDetailsDirectDebit.optional(), credit_transfer: loanRepaymentDetailsCreditTransfer.optional()}).optional(), metadata: z.object({}).optional(), custom_fields: commonCustomFields.optional(), created_at: z.string()});

export const loanSearchResult = z.object({records: z.array(loanDetails).optional()});

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
};

/**
 * List loans
 * 
 * GET /loans
 */
export const getApiLoans = async (args: GetApiLoansArgs, options?: GetApiLoansOptions) => {
const {baseUrl = "https://sandbox.numeral.io/v1", fetch: fetchFn = fetch, sec0} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.starting_after != null) query.append("starting_after", String(args.starting_after))
if (args.sort_order != null) query.append("sort_order", String(args.sort_order))
if (args.start_date != null) query.append("start_date", String(args.start_date))
if (args.end_date != null) query.append("end_date", String(args.end_date))
if (args.status != null) query.append("status", String(args.status))
if (sec0 !== undefined) headers.set("x-api-key", sec0)

const url = `${baseUrl.replace(/\/+$/, '')}/loans${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

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