import {z} from 'zod'

export type GetApiApiV1MeTaxSummaryArgs = {subject?: ('personal' | string) | undefined};

export type GetApiApiV1MeTaxSummaryOptions = {baseUrl?: string | undefined, oauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const taxSubject = z.object({type: z.enum(["natural_person", "legal_entity"]), id: z.string(), name: z.string(), residentPermitNumber: z.string().nullable()});

export const getApiApiV1MeTaxSummaryResponse = z.object({data: z.object({subjects: z.array(z.object({subject: taxSubject, obligations: z.array(z.object({type: z.enum(["income", "vat"]), period: z.object({year: z.number().int(), quarter: z.number().int().gte(1).lte(4).nullable()}), dueDate: z.string(), status: z.enum(["open", "overdue"]), filingId: z.string().nullable()})), lumpSumElections: z.array(z.object({id: z.string(), taxYear: z.number().int().nullable(), effectiveDate: z.string(), terminationDate: z.string().nullable(), status: z.enum(["active", "expired"])}))}))})});

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
};

/**
 * Get tax obligations and lump-sum election status
 * 
 * GET /api/v1/me/tax/summary
 * 
 * Also accepts auth: oauth2
 */
export const getApiApiV1MeTaxSummary = async (args: GetApiApiV1MeTaxSummaryArgs, options?: GetApiApiV1MeTaxSummaryOptions) => {
const {baseUrl = "https://portal.eprospera.com", fetch: fetchFn = fetch, oauth2} = options ?? {}

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

if (args.subject != null) query.append("subject", String(args.subject))
if (oauth2 !== undefined) headers.set('authorization', `Bearer ${oauth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/me/tax/summary${query.size > 0 ? `?${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(getApiApiV1MeTaxSummaryResponse, await res.json())
};