import {z} from 'zod'

export type GetApiDebtLinesIdPositionArgs = {id: string, date?: string | undefined};

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

export const getApiDebtLinesIdPositionResponse = z.object({date: z.string(), currency: z.string(), principal: z.number().int(), limit: z.object({amount: z.number().int(), binding: z.enum(["max_principal", "borrowing_base", "collateral"]), max_principal: z.number().int(), advance_rate: z.number().gte(-10).lte(10).optional(), eligible_balance: z.number().int().optional(), collateral: z.number().int().optional(), borrowing_base: z.number().int().optional(), metric_month: z.string().optional()}).optional(), available_to_draw: z.number().int().gte(0), deficit: z.number().int().gte(0), interest_rate: z.number().gte(-10).lte(10).optional(), daily_interest: z.number().int().gte(0).optional(), next_payment: z.object({due_on: z.string(), amount: z.number().int().gte(0), projected_interest: z.number().int().gte(0), min_payment_top_up: z.number().int().gte(0), past_due: z.number().int().gte(0), credit_applied: z.number().int().gte(0), accrued: z.number().int().gte(0), accrued_through: z.string()}).optional(), overdue: z.object({amount: z.number().int().gte(0), due_on: z.string(), days_late: z.number().int().gte(0).lte(2147483647)}).optional(), credit: z.number().int().gte(0).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
};

/**
 * Get a debt line's principal against its limit, what it can still draw, its next payment and any overdue fees
 * 
 * GET /debt-lines/{id}/position
 * 
 * Also accepts auth: OAuth2
 */
export const getApiDebtLinesIdPosition = async (args: GetApiDebtLinesIdPositionArgs, options?: GetApiDebtLinesIdPositionOptions) => {
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 (args.date != null) query.append("date", String(args.date))
if (APIKeyAuth !== undefined) headers.set("Authorization", APIKeyAuth)

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