import {z} from 'zod'

export type GetApiSearchArgs = {q: string, supported_jobs?: (Array<'income' | 'identity' | 'bill_cancellation' | 'bill_switch' | 'direct_deposit_switch' | 'tax_forms' | 'paystubs' | 'direct_deposit_payment' | 'direct_deposit_allocations' | 'shifts' | 'employment'>) | undefined, response_types?: (Array<'employer' | 'platform'>) | undefined, amount_supported?: boolean | undefined, platform_type?: ('payroll' | 'time_and_attendance' | 'tax' | 'merchant') | undefined, limit?: number | undefined, 'Pinwheel-Version': '2025-07-08' | '2023-11-22' | '2023-07-18' | '2023-04-18' | '2022-09-09' | '2022-06-22' | '2022-03-02'};

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

export const listMeta = z.object({count: z.number().int().optional()});

export const searchResultObjResponse = z.object({id: z.string(), name: z.string(), display_name: z.string().optional(), platform_type: z.enum(["payroll", "time_and_attendance", "tax", "merchant"]).optional(), last_updated: z.string(), logo_url: z.string().optional(), supported_jobs: z.array(z.enum(["income", "identity", "bill_cancellation", "bill_switch", "direct_deposit_switch", "tax_forms", "paystubs", "direct_deposit_payment", "direct_deposit_allocations", "shifts", "employment"])), fractional_amount_supported: z.boolean(), amount_supported: z.boolean(), min_amount: z.number(), max_amount: z.number(), response_type: z.enum(["employer", "platform"]), min_percentage: z.number().int().gt(0).lt(100), max_percentage: z.number().int().gt(0).lt(100), percentage_supported: z.boolean()});

export const getApiSearchResponse = z.object({meta: listMeta, data: z.array(searchResultObjResponse)});

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
};

/**
 * Search Employers and Platforms
 * 
 * GET /search
 */
export const getApiSearch = async (args: GetApiSearchArgs, options?: GetApiSearchOptions) => {
const {baseUrl = "https://api.getpinwheel.com/v1", fetch: fetchFn = fetch, apiSecret} = options ?? {}

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

if (args.q != null) query.append("q", String(args.q))
for (const item of args.supported_jobs ?? []) query.append("supported_jobs", String(item))
for (const item of args.response_types ?? []) query.append("response_types", String(item))
if (args.amount_supported != null) query.append("amount_supported", String(args.amount_supported))
if (args.platform_type != null) query.append("platform_type", String(args.platform_type))
if (args.limit != null) query.append("limit", String(args.limit))
if (args['Pinwheel-Version'] != null) headers.set("Pinwheel-Version", String(args['Pinwheel-Version']))
if (apiSecret !== undefined) headers.set("X-API-SECRET", apiSecret)

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