import {z} from 'zod'

export type AccountCreateAttributes = {name: string, account_type: 'CARD', subtype: 'DEBIT' | 'DAILYPAY', details: {token: string, first_name: string, last_name: string, expiration_month: string, expiration_year: string, address_line_one: string, address_line_two?: string | undefined, address_city: string, address_state: string, address_zip_code: string, address_country: string, issuer: string}} | {name: string, account_type: 'DEPOSITORY', subtype: 'SAVINGS' | 'CHECKING', details: {first_name: string, last_name: string, routing_number: string, account_number: string}};

export type PersonIdentifier = {type: 'people', id: string};

export type PersonRelationship = {data: PersonIdentifier};

export type AccountRelationships = {person: PersonRelationship};

export type AccountCreateResource = {type: 'accounts', attributes: AccountCreateAttributes, relationships: AccountRelationships};

export type AccountCreateData = {data: AccountCreateResource};

export type CreateApiRestAccountsArgs = {body: AccountCreateData};

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

export const currency = z.string();

export const transferDestinationCapability = z.object({schedule: z.enum(["WITHIN_THIRTY_MINUTES", "NEXT_BUSINESS_DAY"]), fee: z.number().int(), currency: currency});

export const accountAttributes = z.union([z.object({verification_status: z.enum(["VERIFICATION_PENDING", "VERIFICATION_FAILED", "VERIFIED"]), balances: z.object({available: z.number().int().gte(0).nullable(), current: z.number().int().gte(0).nullable(), currency: z.string()}), capabilities: z.object({transfer_destination: z.array(transferDestinationCapability)}), name: z.string(), account_type: z.literal("CARD"), subtype: z.enum(["DEBIT", "DAILYPAY"]), details: z.object({last_four: z.string(), issuer: z.string(), first_name: z.string(), last_name: z.string(), expiration_month: z.string(), expiration_year: z.string()})}), z.object({verification_status: z.enum(["VERIFICATION_PENDING", "VERIFICATION_FAILED", "VERIFIED"]), balances: z.object({available: z.number().int().gte(0).nullable(), current: z.number().int().gte(0).nullable(), currency: z.string()}), capabilities: z.object({transfer_destination: z.array(transferDestinationCapability)}), name: z.string(), account_type: z.literal("EARNINGS_BALANCE"), subtype: z.literal("ODP"), details: z.object({})}), z.object({verification_status: z.enum(["VERIFICATION_PENDING", "VERIFICATION_FAILED", "VERIFIED"]), balances: z.object({available: z.number().int().gte(0).nullable(), current: z.number().int().gte(0).nullable(), currency: z.string()}), capabilities: z.object({transfer_destination: z.array(transferDestinationCapability)}), name: z.string(), account_type: z.literal("DEPOSITORY"), subtype: z.enum(["SAVINGS", "CHECKING"]), details: z.object({first_name: z.string(), last_name: z.string(), routing_number: z.string(), account_number: z.string()})})]);

export const accountLink = z.string();

export const accountLinks = z.object({self: accountLink});

export const personIdentifier = z.object({type: z.literal("people"), id: z.string()});

export const personRelationship = z.object({data: personIdentifier});

export const accountRelationships = z.object({person: personRelationship});

export const accountResource = z.object({id: z.string(), type: z.literal("accounts"), attributes: accountAttributes, links: accountLinks, relationships: accountRelationships});

export const accountData = z.object({data: accountResource});

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 an Account object
 * 
 * POST /rest/accounts
 */
export const createApiRestAccounts = async (args: CreateApiRestAccountsArgs, options?: CreateApiRestAccountsOptions) => {
const {baseUrl = "https://api.dailypay.com", fetch: fetchFn = fetch, oauthUserToken} = options ?? {}

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

if (oauthUserToken !== undefined) headers.set('authorization', `Bearer ${oauthUserToken}`)

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