import {z} from 'zod'

export type SubscriptionCreateRequest = {user_id: number, is_trial?: boolean | undefined, duration_days?: (number | null) | undefined, traffic_limit_gb?: (number | null) | undefined, device_limit?: (number | null) | undefined, squad_uuid?: (string | null) | undefined, connected_squads?: (Array<string> | null) | undefined, replace_existing?: boolean | undefined};

export type CreateApiSubscriptionsArgs = {body: SubscriptionCreateRequest};

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

export const subscriptionResponse = z.object({id: z.number().int(), user_id: z.number().int(), status: z.string(), actual_status: z.string(), is_trial: z.boolean(), start_date: z.string(), end_date: z.string(), traffic_limit_gb: z.number().int(), traffic_used_gb: z.number(), device_limit: z.number().int(), autopay_enabled: z.boolean(), autopay_days_before: z.number().int().nullable().optional(), subscription_url: z.string().nullable().optional(), subscription_crypto_link: z.string().nullable().optional(), connected_squads: z.array(z.string()).optional(), created_at: z.string().nullable().optional(), updated_at: z.string().nullable().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
};

/**
 * Create Subscription
 * 
 * POST /subscriptions
 */
export const createApiSubscriptions = async (args: CreateApiSubscriptionsArgs, options: CreateApiSubscriptionsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (APIKeyHeader !== undefined) headers.set("X-API-Key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/subscriptions${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(subscriptionResponse, await res.json())
};