import {z} from 'zod'

export type GetApiApiChargesArgs = {planId?: string | undefined};

export type GetApiApiChargesOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const chargeGraduatedRangeResponse = z.object({id: z.string(), chargeId: z.string(), fromValue: z.number(), toValue: z.number().optional(), perUnitAmount: z.string(), flatAmount: z.string(), order: z.number()});

export const chargeFilterResponse = z.object({id: z.string(), chargeId: z.string(), key: z.string(), values: z.array(z.string()), properties: z.record(z.string(), z.unknown()).optional()});

export const chargeResponse = z.object({id: z.string(), planId: z.string(), billableMetricId: z.string(), chargeModel: z.enum(["STANDARD", "GRADUATED", "VOLUME", "PACKAGE", "PERCENTAGE"]), billingTiming: z.enum(["IN_ADVANCE", "IN_ARREARS"]), invoiceDisplayName: z.string().optional(), minAmountCents: z.number().optional(), prorated: z.boolean(), properties: z.record(z.string(), z.unknown()).optional(), graduatedRanges: z.array(chargeGraduatedRangeResponse), filters: z.array(chargeFilterResponse), createdAt: z.string(), updatedAt: z.string()});

export const getApiApiChargesResponse = z.array(chargeResponse);

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
};

/**
 * List all charges
 * 
 * GET /api/charges
 */
export const getApiApiCharges = async (args: GetApiApiChargesArgs, options?: GetApiApiChargesOptions) => {
const {baseUrl = "https://api.novabilling.one", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.planId != null) query.append("planId", String(args.planId))
if (apiKey !== undefined) headers.set("Authorization", apiKey)

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