import {z} from 'zod'

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

export const continent = z.object({displayName: z.string().optional(), name: z.string().optional()});

export const country = z.object({displayName: z.string().optional(), name: z.string().optional()});

export const privateLocation = z.object({name: z.string().optional()});

export const region = z.object({agentDrivePublicUrl: z.object({}).optional(), allowed: z.string().optional(), continent: z.string().optional(), country: z.string().optional(), drivesAvailable: z.boolean().optional(), egressAvailable: z.boolean().optional(), infoGeneration: z.string().optional(), location: z.string().optional(), mk31Available: z.boolean().optional(), name: z.string().optional(), proxyAvailable: z.boolean().optional()});

export const configuration = z.object({continents: z.array(continent).optional(), countries: z.array(country).optional(), detectedRegion: z.string().optional(), privateLocations: z.array(privateLocation).optional(), regions: z.array(region).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 platform configuration
 * 
 * GET /configuration
 * 
 * Also accepts auth: ApiKeyAuth
 */
export const getApiConfiguration = async (options?: GetApiConfigurationOptions) => {
const {baseUrl = "https://api.blaxel.ai/v0", 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 = `${baseUrl.replace(/\/+$/, '')}/configuration${query.size > 0 ? `?${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(configuration, await res.json())
};