import {z} from 'zod'

export type GetApiReportsSettlementArgs = {start_date: string, end_date: string};

export type GetApiReportsSettlementOptions = {baseUrl?: string | undefined, Passcode?: string | undefined, fetch?: typeof fetch | undefined};

export const cardSettlementRecord = z.object({merchant_id: z.number().optional(), transactions_date: z.string().optional(), currency: z.string().max(3).optional(), settlement_net_amount: z.number().optional(), settlement_state: z.enum(["Scheduled", "Generating", "In Process", "Approved", "Declined", "Transferred", "On Hold", "Accumulating", "Perform Settlement", "Under Minimum Threshold", "Pending Account Verification"]).optional(), settlement_date: z.string().optional(), approved_transaction_count: z.number().optional(), declined_transaction_count: z.number().optional(), sale_amount_total: z.number().optional(), returned_amount_total: z.number().optional(), chargebacks_count: z.number().optional(), chargebacks_amount_total: z.number().optional(), card_transaction_approved_rate: z.number().optional(), card_transaction_declined_rate: z.number().optional(), card_discount_rate: z.number().optional(), gst_tax_rate: z.number().optional(), approved_transaction_fee_total: z.number().optional(), declined_transaction_fee_total: z.number().optional(), discount_rate_fee_total: z.number().optional(), chargeback_fee_total: z.number().optional(), gst_tax_fee_total: z.number().optional(), reserves_held: z.number().optional(), reserves_released: z.number().optional(), reserves_forward: z.number().optional()});

export const cardSettlementReport = z.object({data: z.array(cardSettlementRecord).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
};

/**
 * Settlement Report
 * 
 * GET /reports/settlement
 * 
 * Also accepts auth: Sub-Merchant-Id
 */
export const getApiReportsSettlement = async (args: GetApiReportsSettlementArgs, options?: GetApiReportsSettlementOptions) => {
const {baseUrl = "https://api.na.bambora.com/v1", fetch: fetchFn = fetch, Passcode} = options ?? {}

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

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 (Passcode !== undefined) headers.set("Authorization", Passcode)

const url = `${baseUrl.replace(/\/+$/, '')}/reports/settlement${query.size > 0 ? `?${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(cardSettlementReport, await res.json())
};