import {z} from 'zod'

export type GetApiMeOptions = {baseUrl?: string | undefined, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const sSHKey = z.object({key_id: z.number().int().optional(), uid: z.number().int().optional(), fingerprint: z.string().optional(), title: z.string().optional(), value: z.string().optional(), changed: z.string().optional()});

export const ownerInfo = z.object({type: z.string().optional(), username: z.string().optional(), display_name: z.string().optional()});

export const currentUser = z.object({id: z.string().optional(), uuid: z.string().optional(), username: z.string().optional(), display_name: z.string().optional(), status: z.number().int().optional(), mail: z.string().optional(), ssh_keys: z.array(sSHKey).optional(), has_key: z.boolean().optional(), projects: z.array(z.object({id: z.string().optional(), name: z.string().optional(), title: z.string().optional(), cluster: z.string().optional(), cluster_label: z.string().optional(), region: z.string().optional(), region_label: z.string().optional(), uri: z.string().optional(), endpoint: z.string().optional(), license_id: z.number().int().optional(), owner: z.string().optional(), owner_info: ownerInfo.optional(), plan: z.string().optional(), subscription_id: z.number().int().optional(), status: z.string().optional(), vendor: z.string().optional(), vendor_label: z.string().optional(), vendor_website: z.string().optional(), vendor_resources: z.string().optional(), created_at: z.string().optional()})).optional(), sequence: z.number().int().optional(), roles: z.array(z.string()).optional(), picture: z.string().optional(), tickets: z.object({}).optional(), trial: z.boolean().optional(), current_trial: z.array(z.object({created: z.string().optional(), description: z.string().optional(), spend_remaining: z.string().optional(), expiration: 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
};

/**
 * Get current logged-in user info
 * 
 * GET /me
 */
export const getApiMe = async (options?: GetApiMeOptions) => {
const {baseUrl = "https://api.upsun.com", fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

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