import {z} from 'zod'

export type GetApiDebtLinesIdEligibilityArgs = {id: string};

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

export const getApiDebtLinesIdEligibilityResponse = z.object({debt_line_id: z.string(), currency: z.string(), outstanding: z.object({count: z.number().int().gte(0).lte(2147483647), balance: z.number().int()}), eligible: z.object({count: z.number().int().gte(0).lte(2147483647), balance: z.number().int()}), ineligible: z.object({count: z.number().int().gte(0).lte(2147483647), balance: z.number().int()}), criteria: z.object({max_term: z.string().optional(), product_types: z.array(z.enum(["term_loan", "line_of_credit", "buy_now_pay_later", "credit_card", "invoice", "earned_wage_access", "lease", "gig_payout", "creator_payout", "merchant_payout", "rental_payout", "marketplace_payout", "real_estate_commission", "subscription", "government_salary", "government_contract", "bank_transfer", "stock_sell_settlement"])).optional(), countries: z.array(z.string()).optional(), currencies: z.record(z.string(), z.number().int().gte(0)).optional(), obligor_types: z.array(z.enum(["business", "individual"])).optional()}).nullable().optional(), issues: z.array(z.object({count: z.number().int().gte(0).lte(2147483647), balance: z.number().int(), reason: z.enum(["obligor_type", "country", "currency", "product_type", "term_length", "credit_limit", "max_balance", "apr", "review"]), only: z.object({count: z.number().int().gte(0).lte(2147483647), balance: z.number().int()})}))});

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 a debt line's outstanding receivables pledged to Sivo by eligibility, and the criteria the ineligible ones fail
 * 
 * GET /debt-lines/{id}/eligibility
 * 
 * Also accepts auth: OAuth2
 */
export const getApiDebtLinesIdEligibility = async (args: GetApiDebtLinesIdEligibilityArgs, options?: GetApiDebtLinesIdEligibilityOptions) => {
const {baseUrl = "https://core.sivo.com", fetch: fetchFn = fetch, APIKeyAuth} = options ?? {}

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

if (APIKeyAuth !== undefined) headers.set("Authorization", APIKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/debt-lines/${encodeURIComponent(String(args.id))}/eligibility${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(getApiDebtLinesIdEligibilityResponse, await res.json())
};