import {z} from 'zod'

export type UUID = string;

export type CurrencyCode = 'EUR' | 'USD' | 'GBP' | 'CHF' | 'JPY' | 'SGD' | 'SEK' | 'NOK' | 'DKK' | 'PLN' | 'HUF' | 'CZK';

export type NonNegativeAmount = {value: string, currency: CurrencyCode};

export type CreateApiV0SwapOrdersArgs = {body: {investorId: UUID, accountId: UUID, fromShareClassId: UUID, toShareClassId: UUID, quantity: {mode: 'amount', amount: NonNegativeAmount} | {mode: 'shares', shares: string} | {mode: 'total'}}};

export type CreateApiV0SwapOrdersOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const uUID = z.string();

export const currencyCode = z.enum(["EUR", "USD", "GBP", "CHF", "JPY", "SGD", "SEK", "NOK", "DKK", "PLN", "HUF", "CZK"]);

export const nonNegativeAmount = z.object({value: z.string(), currency: currencyCode});

export const day = z.string();

export const createApiV0SwapOrdersResponse = z.union([z.object({id: uUID, investorId: uUID, accountId: uUID, fromShareClassId: uUID, toShareClassId: uUID, quantity: z.union([z.object({mode: z.literal("amount"), amount: nonNegativeAmount}), z.object({mode: z.literal("shares"), shares: z.string()}), z.object({mode: z.literal("total")})]), createdAt: z.string(), status: z.literal("created")}), z.object({id: uUID, investorId: uUID, accountId: uUID, fromShareClassId: uUID, toShareClassId: uUID, quantity: z.union([z.object({mode: z.literal("amount"), amount: nonNegativeAmount}), z.object({mode: z.literal("shares"), shares: z.string()}), z.object({mode: z.literal("total")})]), createdAt: z.string(), status: z.literal("executed"), executedAt: z.string(), settlement: z.object({source: z.object({shareClassId: uUID, amount: nonNegativeAmount, sharesAmount: z.string(), appliedNAV: z.object({day: day, amount: nonNegativeAmount})}), target: z.object({shareClassId: uUID, amount: nonNegativeAmount, sharesAmount: z.string(), appliedNAV: z.object({day: day, amount: nonNegativeAmount})}), exchangeRate: z.object({fundId: uUID, day: day, baseCurrency: currencyCode, quoteCurrency: currencyCode, fxRate: z.string()}).nullable()})}), z.object({id: uUID, investorId: uUID, accountId: uUID, fromShareClassId: uUID, toShareClassId: uUID, quantity: z.union([z.object({mode: z.literal("amount"), amount: nonNegativeAmount}), z.object({mode: z.literal("shares"), shares: z.string()}), z.object({mode: z.literal("total")})]), createdAt: z.string(), status: z.literal("canceled"), canceledAt: z.string(), canceledBy: z.enum(["admin", "distributor", "investor", "system"])})]);

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
};

/**
 * Create swap order
 * 
 * POST /v0/swap-orders/
 */
export const createApiV0SwapOrders = async (args: CreateApiV0SwapOrdersArgs, options?: CreateApiV0SwapOrdersOptions) => {
const {baseUrl = "https://distributor-api.spiko.io", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v0/swap-orders/${query.size > 0 ? `?${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(createApiV0SwapOrdersResponse, await res.json())
};