import {z} from 'zod'

export type GetApiV1AppIdArgs = {appId: string};

export type GetApiV1AppIdOptions = {baseUrl?: string | undefined, JWTAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const appMetadata = z.object({id: z.string().optional(), custom: z.record(z.string(), z.string().nullable()).nullable().optional(), defaultLocale: z.enum(["ar", "bg-BG", "bs-BA", "cs-CZ", "da-DK", "de-DE", "el-GR", "en-US", "es-ES", "et-EE", "fa", "fi-FI", "fr-FR", "he-IL", "hi-IN", "hr-HR", "hu-HU", "id-ID", "it-IT", "ja-JP", "ka-GE", "ko-KR", "nb-NO", "nl-NL", "pl-PL", "pt-BR", "ro-RO", "ru-RU", "sq-AL", "sr-SP", "sv-SE", "tr-TR", "uk-UA", "vi-VN", "zh-CN", "zh-TW"]).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 app metadata
 * 
 * GET /v1/{appId}
 * 
 * Also accepts auth: ApiKeyAuth
 */
export const getApiV1AppId = async (args: GetApiV1AppIdArgs, options?: GetApiV1AppIdOptions) => {
const {baseUrl = "https://api.talkjs.com", fetch: fetchFn = fetch, JWTAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/${encodeURIComponent(String(args.appId))}${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(appMetadata, await res.json())
};