import {z} from 'zod'

export type CreditItem = {containerLocator: unknown, containerType: 'invoice' | 'account' | 'subpayment' | 'invoiceItem', amount?: number | undefined};

export type DisbursementCreateRequest = {accountLocator?: unknown | undefined, type: string, amount: number, data: {[key: string]: Record<string, never>}, sources: Array<CreditItem>, useDefaultFinancialInstrument: boolean, financialInstrumentLocator?: unknown | undefined, transactionMethod?: ('ach' | 'cash' | 'eft' | 'standard' | 'wire') | undefined, transactionNumber?: string | undefined, currency?: string | undefined};

export type CreateApiBillingTenantLocatorDisbursementsArgs = {tenantLocator: string, body: DisbursementCreateRequest};

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

export const creditItem = z.object({containerLocator: z.string(), containerType: z.enum(["invoice", "account", "subpayment", "invoiceItem"]), amount: z.number().optional()});

export const validationItemResponse = z.object({elementType: z.string(), locator: z.string(), errors: z.array(z.string())});

export const validationResult = z.object({validationItems: z.array(validationItemResponse).optional(), success: z.boolean()});

export const disbursementResponse = z.object({locator: z.string(), disbursementState: z.enum(["draft", "validated", "approved", "executed", "reversed", "rejected", "discarded"]), type: z.string(), currency: z.string(), amount: z.number(), data: z.record(z.string(), z.object({})), createdAt: z.string(), createdBy: z.string(), accountLocator: z.string().optional(), sources: z.array(creditItem), externalCashTransactionLocator: z.string().optional(), validationResult: validationResult.optional(), disbursementNumber: z.string().optional(), anonymizedAt: z.string().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
};

/**
 * POST /billing/{tenantLocator}/disbursements
 */
export const createApiBillingTenantLocatorDisbursements = async (args: CreateApiBillingTenantLocatorDisbursementsArgs, options: CreateApiBillingTenantLocatorDisbursementsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/billing/${encodeURIComponent(String(args.tenantLocator))}/disbursements${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(disbursementResponse, await res.json())
};