import {z} from 'zod'

export type DbConnectionParams = {host: string, port: number, db_name: string, user_login: string, user_password: string};

export type VerboseOptions = 'info' | 'debug' | 'error';

export type RestoreMode = 'restore' | 'sync-struct-restore' | 'sync-data-restore';

export type DictionaryContent = {name: string, additional_info?: (string | null) | undefined, content: string};

export type RestoreRequest = {operation_id: string, db_connection_params: DbConnectionParams, webhook_status_url: string, webhook_metadata: unknown, webhook_extra_headers?: ({[key: string]: string} | null) | undefined, webhook_verify_ssl?: boolean | undefined, web_debug?: boolean | undefined, log_level?: (VerboseOptions | null) | undefined, conn_count?: (number | null) | undefined, proc_conn_count?: (number | null) | undefined, type: RestoreMode, input_path: string, validated_input_path?: (string | null) | undefined, partial_tables_dict_contents?: (Array<DictionaryContent> | null) | undefined, partial_tables_exclude_dict_contents?: (Array<DictionaryContent> | null) | undefined, schema_names?: (Array<string> | null) | undefined, schema_masks?: (Array<string> | null) | undefined, exclude_schema_names?: (Array<string> | null) | undefined, exclude_schema_masks?: (Array<string> | null) | undefined, pg_restore_path?: (string | null) | undefined, pg_restore_options?: (string | null) | undefined, keep_fdw_user_mappings?: boolean | undefined, drop_custom_check_constr?: boolean | undefined, clean_db?: boolean | undefined, drop_db?: boolean | undefined, save_dicts?: boolean | undefined, ignore_privileges?: boolean | undefined};

export type CreateApiApiStatelessRestoreArgs = {body: RestoreRequest};

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

export const createApiApiStatelessRestoreResponse = z.unknown();

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
};

/**
 * Run restore operation
 * 
 * POST /api/stateless/restore
 */
export const createApiApiStatelessRestore = async (args: CreateApiApiStatelessRestoreArgs, options: CreateApiApiStatelessRestoreOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

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