import { normalizeAccount, normalizeStatus, normalizePoll } from "./normalizer";

export const ACCOUNT_IMPORT  = "ACCOUNT_IMPORT";
export const ACCOUNTS_IMPORT = "ACCOUNTS_IMPORT";
export const STATUS_IMPORT   = "STATUS_IMPORT";
export const STATUSES_IMPORT = "STATUSES_IMPORT";
export const POLLS_IMPORT    = "POLLS_IMPORT";
export const FILTERS_IMPORT  = "FILTERS_IMPORT";

function pushUnique(array, object) {
  if (array.every(element => element.id !== object.id)) {
    array.push(object);
  }
}

export function importAccount(account) {
  return { type: ACCOUNT_IMPORT, account };
}

export function importAccounts(accounts) {
  return { type: ACCOUNTS_IMPORT, accounts };
}

export function importStatus(status) {
  return { type: STATUS_IMPORT, status };
}

export function importStatuses(statuses) {
  return { type: STATUSES_IMPORT, statuses };
}

export function importFilters(filters) {
  return { type: FILTERS_IMPORT, filters };
}

export function importPolls(polls) {
  return { type: POLLS_IMPORT, polls };
}

export function importFetchedAccount(account) {
  return importFetchedAccounts([account]);
}

export function importFetchedAccounts(accounts) {
  const normalAccounts = [];

  function processAccount(account) {
    pushUnique(normalAccounts, normalizeAccount(account));

    if (account.moved) {
      processAccount(account.moved);
    }
  }

  accounts.forEach(processAccount);

  return importAccounts(normalAccounts);
}

export function importFetchedStatus(status) {
  return importFetchedStatuses([status]);
}

export function importFetchedStatuses(statuses) {
  return (dispatch, getState) => {
    const accounts = [];
    const normalStatuses = [];
    const polls = [];
    const filters = [];

    function processStatus(status) {
      pushUnique(normalStatuses, normalizeStatus(status, getState().getIn(["statuses", status.id]), getState().get("local_settings")));
      pushUnique(accounts, status.account);

      if (status.filtered) {
        status.filtered.forEach(result => pushUnique(filters, result.filter));
      }

      if (status.reblog && status.reblog.id) {
        processStatus(status.reblog);
      }

      if (status.quote && status.quote.id) {
        processStatus(status.quote);
      }

      if (status.poll && status.poll.id) {
        pushUnique(polls, normalizePoll(status.poll, getState().getIn(["polls", status.poll.id])));
      }
    }

    statuses.forEach(processStatus);

    dispatch(importPolls(polls));
    dispatch(importFetchedAccounts(accounts));
    dispatch(importStatuses(normalStatuses));
    dispatch(importFilters(filters));
  };
}

export function importFetchedPoll(poll) {
  return (dispatch, getState) => {
    dispatch(importPolls([normalizePoll(poll, getState().getIn(["polls", poll.id]))]));
  };
}