import {z} from 'zod'

export type GetApiPlansCodeFixedChargesFixedChargeCodeOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const fixedChargeProperties = z.object({amount: z.string().optional(), graduated_ranges: z.array(z.object({from_value: z.number().int(), to_value: z.number().int().nullable(), flat_amount: z.string(), per_unit_amount: z.string()})).optional(), volume_ranges: z.array(z.object({from_value: z.number().int(), to_value: z.number().int().nullable(), flat_amount: z.string(), per_unit_amount: z.string()})).optional()});

export const taxObject = z.object({lago_id: z.string(), name: z.string(), code: z.string(), description: z.string().nullable(), rate: z.number(), applied_to_organization: z.boolean(), applied_to_billing_entities_codes: z.array(z.string()).optional(), created_at: z.string()});

export const fixedChargeObject = z.object({lago_id: z.string(), lago_add_on_id: z.string(), invoice_display_name: z.string().nullable(), add_on_code: z.string(), created_at: z.string(), code: z.string(), charge_model: z.enum(["standard", "graduated", "volume"]), pay_in_advance: z.boolean(), prorated: z.boolean(), properties: fixedChargeProperties, units: z.string(), lago_parent_id: z.string().nullable().optional(), taxes: z.array(taxObject).optional()});

export const fixedCharge = z.object({fixed_charge: fixedChargeObject});

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
};

/**
 * Retrieve a fixed charge
 * 
 * GET /plans/{code}/fixed_charges/{fixed_charge_code}
 */
export const getApiPlansCodeFixedChargesFixedChargeCode = async (options?: GetApiPlansCodeFixedChargesFixedChargeCodeOptions) => {
const {baseUrl = "https://api.getlago.com/api/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/plans/${encodeURIComponent(String(args.code))}/fixed_charges/${encodeURIComponent(String(args.fixed_charge_code))}${query.size > 0 ? `?${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(fixedCharge, await res.json())
};