import {z} from 'zod'

export type CreateAwardedTransactionRequest = {transactionStatus: 'awarded' | 'paid' | 'processing' | 'cancelled' | 'pending', amount: number, description?: (string | null) | undefined, applicantMemo?: (string | null) | undefined, publicOrganizationId?: (string | null) | undefined};

export type CreatePendingTransactionRequest = {transactionStatus: 'awarded' | 'paid' | 'processing' | 'cancelled' | 'pending', amount: number, description?: (string | null) | undefined, applicantMemo?: (string | null) | undefined, publicOrganizationId?: (string | null) | undefined};

export type CreateProcessingTransactionRequest = {transactionStatus: 'awarded' | 'paid' | 'processing' | 'cancelled' | 'pending', amount: number, description?: (string | null) | undefined, applicantMemo?: (string | null) | undefined, publicOrganizationId?: (string | null) | undefined};

export type CreatePaidTransactionRequest = {transactionStatus: 'awarded' | 'paid' | 'processing' | 'cancelled' | 'pending', amount: number, description?: (string | null) | undefined, applicantMemo?: (string | null) | undefined, publicOrganizationId?: (string | null) | undefined};

export type CreateApiV4TransactionsArgs = {body: CreateAwardedTransactionRequest | CreatePendingTransactionRequest | CreateProcessingTransactionRequest | CreatePaidTransactionRequest};

export type CreateApiV4TransactionsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const transactionResponse = z.object({transactionId: z.string().nullable().optional(), amount: z.number().optional(), fundId: z.string().nullable().optional(), status: z.enum(["awarded", "paid", "processing", "cancelled", "pending"]).nullable().optional(), submissionId: z.string().nullable().optional(), createdAt: z.string().nullable().optional(), description: z.string().nullable().optional(), applicantMemo: z.string().nullable().optional(), awardTransactionId: z.string().nullable().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
};

/**
 * Create a transaction
 * 
 * POST /v4/transactions
 */
export const createApiV4Transactions = async (args: CreateApiV4TransactionsArgs, options?: CreateApiV4TransactionsOptions) => {
const {baseUrl = "https://submittable-api.submittable.com", 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 = `${baseUrl.replace(/\/+$/, '')}/v4/transactions${query.size > 0 ? `?${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(transactionResponse, await res.json())
};