import {z} from 'zod'

export type GetApiApiV4SystemsArgs = {page?: number | undefined, size?: number | undefined, sort_by?: ('id' | '-id') | undefined};

export type GetApiApiV4SystemsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiApiV4SystemsResponse = z.object({total: z.number().int().optional(), current_page: z.number().int().optional(), size: z.number().int().optional(), count: z.number().int().optional(), items: z.string().optional(), systems: z.array(z.object({system_id: z.number().int().optional(), name: z.string().optional(), public_name: z.string().optional(), timezone: z.string().optional(), address: z.object({city: z.string().optional(), state: z.string().optional(), country: z.string().optional(), postal_code: z.string().optional()}).optional(), connection_type: z.string().optional(), energy_lifetime: z.number().int().optional(), energy_today: z.number().int().optional(), system_size: z.number().optional(), status: z.string().optional(), stage: z.number().int().optional(), last_report_at: z.number().int().optional(), last_energy_at: z.number().int().optional(), operational_at: z.number().int().optional(), attachment_type: z.string().optional(), interconnect_date: z.number().int().optional(), reference: z.string().optional(), other_references: z.array(z.string()).optional()})).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
};

/**
 * Fetch systems
 * 
 * GET /api/v4/systems
 */
export const getApiApiV4Systems = async (args: GetApiApiV4SystemsArgs, options?: GetApiApiV4SystemsOptions) => {
const {baseUrl = "https://api-qa2.enphaseenergy.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.page != null) query.append("page", String(args.page))
if (args.size != null) query.append("size", String(args.size))
if (args.sort_by != null) query.append("sort_by", String(args.sort_by))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v4/systems${query.size > 0 ? `?${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(getApiApiV4SystemsResponse, await res.json())
};