import {z} from 'zod'

export type GetApiSettlementsArgs = {currency?: string | undefined, participantId?: number | undefined, settlementWindowId?: number | undefined, accountId?: number | undefined, state?: ('PENDING_SETTLEMENT' | 'PS_TRANSFERS_RECORDED' | 'PS_TRANSFERS_RESERVED' | 'PS_TRANSFERS_COMMITTED' | 'SETTLING' | 'SETTLED' | 'ABORTED') | undefined, fromDateTime?: string | undefined, toDateTime?: string | undefined, fromSettlementWindowDateTime?: string | undefined, toSettlementWindowDateTime?: string | undefined};

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

export const settlementWindowContent = z.object({id: z.number().int(), state: z.string(), ledgerAccountType: z.string(), currencyId: z.string(), createdDate: z.string(), changedDate: z.string().optional(), settlementId: z.number().int().optional()});

export const settlementWindow = z.object({id: z.number().int(), reason: z.string().optional(), state: z.string(), createdDate: z.string(), changedDate: z.string().optional(), content: z.array(settlementWindowContent).optional()});

export const settlementWindows = z.array(settlementWindow);

export const netSettlementAmount = z.object({amount: z.number().optional(), currency: z.string().optional()});

export const accounts = z.object({id: z.number().int().optional(), reason: z.string().optional(), state: z.string().optional(), netSettlementAmount: netSettlementAmount.optional()});

export const participant = z.object({id: z.number().int().optional(), accounts: z.array(accounts).optional()});

export const settlement = z.object({id: z.number().int().optional(), state: z.string().optional(), settlementWindows: z.array(settlementWindows).optional(), participants: z.array(participant).optional()});

export const settlements = z.array(settlement);

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
};

/**
 * getSettlementsByParams
 * 
 * GET /settlements
 */
export const getApiSettlements = async (args: GetApiSettlementsArgs, options: GetApiSettlementsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.currency != null) query.append("currency", String(args.currency))
if (args.participantId != null) query.append("participantId", String(args.participantId))
if (args.settlementWindowId != null) query.append("settlementWindowId", String(args.settlementWindowId))
if (args.accountId != null) query.append("accountId", String(args.accountId))
if (args.state != null) query.append("state", String(args.state))
if (args.fromDateTime != null) query.append("fromDateTime", String(args.fromDateTime))
if (args.toDateTime != null) query.append("toDateTime", String(args.toDateTime))
if (args.fromSettlementWindowDateTime != null) query.append("fromSettlementWindowDateTime", String(args.fromSettlementWindowDateTime))
if (args.toSettlementWindowDateTime != null) query.append("toSettlementWindowDateTime", String(args.toSettlementWindowDateTime))

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