import api, { getLinks } from '../api';
import { importFetchedAccounts } from './importer';
import { fetchRelationships } from './accounts';

export const GROUP_FETCH_REQUEST = 'GROUP_FETCH_REQUEST';
export const GROUP_FETCH_SUCCESS = 'GROUP_FETCH_SUCCESS';
export const GROUP_FETCH_FAIL    = 'GROUP_FETCH_FAIL';

export const GROUP_RELATIONSHIPS_FETCH_REQUEST = 'GROUP_RELATIONSHIPS_FETCH_REQUEST';
export const GROUP_RELATIONSHIPS_FETCH_SUCCESS = 'GROUP_RELATIONSHIPS_FETCH_SUCCESS';
export const GROUP_RELATIONSHIPS_FETCH_FAIL    = 'GROUP_RELATIONSHIPS_FETCH_FAIL';

export const GROUPS_FETCH_REQUEST = 'GROUPS_FETCH_REQUEST';
export const GROUPS_FETCH_SUCCESS = 'GROUPS_FETCH_SUCCESS';
export const GROUPS_FETCH_FAIL    = 'GROUPS_FETCH_FAIL';

export const GROUP_JOIN_REQUEST = 'GROUP_JOIN_REQUEST';
export const GROUP_JOIN_SUCCESS = 'GROUP_JOIN_SUCCESS';
export const GROUP_JOIN_FAIL    = 'GROUP_JOIN_FAIL';

export const GROUP_LEAVE_REQUEST = 'GROUP_LEAVE_REQUEST';
export const GROUP_LEAVE_SUCCESS = 'GROUP_LEAVE_SUCCESS';
export const GROUP_LEAVE_FAIL    = 'GROUP_LEAVE_FAIL';

export const GROUP_MEMBERS_FETCH_REQUEST = 'GROUP_MEMBERS_FETCH_REQUEST';
export const GROUP_MEMBERS_FETCH_SUCCESS = 'GROUP_MEMBERS_FETCH_SUCCESS';
export const GROUP_MEMBERS_FETCH_FAIL    = 'GROUP_MEMBERS_FETCH_FAIL';

export const GROUP_MEMBERS_EXPAND_REQUEST = 'GROUP_MEMBERS_EXPAND_REQUEST';
export const GROUP_MEMBERS_EXPAND_SUCCESS = 'GROUP_MEMBERS_EXPAND_SUCCESS';
export const GROUP_MEMBERS_EXPAND_FAIL    = 'GROUP_MEMBERS_EXPAND_FAIL';

export const GROUP_REMOVED_ACCOUNTS_FETCH_REQUEST = 'GROUP_REMOVED_ACCOUNTS_FETCH_REQUEST';
export const GROUP_REMOVED_ACCOUNTS_FETCH_SUCCESS = 'GROUP_REMOVED_ACCOUNTS_FETCH_SUCCESS';
export const GROUP_REMOVED_ACCOUNTS_FETCH_FAIL    = 'GROUP_REMOVED_ACCOUNTS_FETCH_FAIL';

export const GROUP_REMOVED_ACCOUNTS_EXPAND_REQUEST = 'GROUP_REMOVED_ACCOUNTS_EXPAND_REQUEST';
export const GROUP_REMOVED_ACCOUNTS_EXPAND_SUCCESS = 'GROUP_REMOVED_ACCOUNTS_EXPAND_SUCCESS';
export const GROUP_REMOVED_ACCOUNTS_EXPAND_FAIL    = 'GROUP_REMOVED_ACCOUNTS_EXPAND_FAIL';

export const GROUP_REMOVED_ACCOUNTS_REMOVE_REQUEST = 'GROUP_REMOVED_ACCOUNTS_REMOVE_REQUEST';
export const GROUP_REMOVED_ACCOUNTS_REMOVE_SUCCESS = 'GROUP_REMOVED_ACCOUNTS_REMOVE_SUCCESS';
export const GROUP_REMOVED_ACCOUNTS_REMOVE_FAIL    = 'GROUP_REMOVED_ACCOUNTS_REMOVE_FAIL';

export const GROUP_REMOVED_ACCOUNTS_CREATE_REQUEST = 'GROUP_REMOVED_ACCOUNTS_CREATE_REQUEST';
export const GROUP_REMOVED_ACCOUNTS_CREATE_SUCCESS = 'GROUP_REMOVED_ACCOUNTS_CREATE_SUCCESS';
export const GROUP_REMOVED_ACCOUNTS_CREATE_FAIL    = 'GROUP_REMOVED_ACCOUNTS_CREATE_FAIL';

export const GROUP_REMOVE_STATUS_REQUEST = 'GROUP_REMOVE_STATUS_REQUEST';
export const GROUP_REMOVE_STATUS_SUCCESS = 'GROUP_REMOVE_STATUS_SUCCESS';
export const GROUP_REMOVE_STATUS_FAIL    = 'GROUP_REMOVE_STATUS_FAIL';

export const fetchGroup = id => (dispatch, getState) => {
  if (!getState().get('me')) return;

  dispatch(fetchGroupRelationships([id]));

  if (getState().getIn(['groups', id])) {
    return;
  }

  dispatch(fetchGroupRequest(id));

  api(getState).get(`/api/v1/groups/${id}`)
    .then(({ data }) => dispatch(fetchGroupSuccess(data)))
    .catch(err => dispatch(fetchGroupFail(id, err)));
};

export const fetchGroupRequest = id => ({
  type: GROUP_FETCH_REQUEST,
  id,
});

export const fetchGroupSuccess = group => ({
  type: GROUP_FETCH_SUCCESS,
  group,
});

export const fetchGroupFail = (id, error) => ({
  type: GROUP_FETCH_FAIL,
  id,
  error,
});

export function fetchGroupRelationships(groupIds) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    const loadedRelationships = getState().get('group_relationships');
    const newGroupIds = groupIds.filter(id => loadedRelationships.get(id, null) === null);

    if (newGroupIds.length === 0) {
      return;
    }

    dispatch(fetchGroupRelationshipsRequest(newGroupIds));

    api(getState).get(`/api/v1/groups/${newGroupIds[0]}/relationships?${newGroupIds.map(id => `id[]=${id}`).join('&')}`).then(response => {
      dispatch(fetchGroupRelationshipsSuccess(response.data));
    }).catch(error => {
      dispatch(fetchGroupRelationshipsFail(error));
    });
  };
};

export function fetchGroupRelationshipsRequest(ids) {
  return {
    type: GROUP_RELATIONSHIPS_FETCH_REQUEST,
    ids,
    skipLoading: true,
  };
};

export function fetchGroupRelationshipsSuccess(relationships) {
  return {
    type: GROUP_RELATIONSHIPS_FETCH_SUCCESS,
    relationships,
    skipLoading: true,
  };
};

export function fetchGroupRelationshipsFail(error) {
  return {
    type: GROUP_RELATIONSHIPS_FETCH_FAIL,
    error,
    skipLoading: true,
  };
};

export const fetchGroups = (tab) => (dispatch, getState) => {
  if (!getState().get('me')) return;

  dispatch(fetchGroupsRequest());

  api(getState).get('/api/v1/groups?tab=' + tab)
    .then(({ data }) => {
      dispatch(fetchGroupsSuccess(data, tab));
      dispatch(fetchGroupRelationships(data.map(item => item.id)));
    })
    .catch(err => dispatch(fetchGroupsFail(err)));
};

export const fetchGroupsRequest = () => ({
  type: GROUPS_FETCH_REQUEST,
});

export const fetchGroupsSuccess = (groups, tab) => ({
  type: GROUPS_FETCH_SUCCESS,
  groups,
  tab,
});

export const fetchGroupsFail = error => ({
  type: GROUPS_FETCH_FAIL,
  error,
});

export function joinGroup(id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    dispatch(joinGroupRequest(id));

    api(getState).post(`/api/v1/groups/${id}/accounts`).then(response => {
      dispatch(joinGroupSuccess(response.data));
    }).catch(error => {
      dispatch(joinGroupFail(id, error));
    });
  };
};

export function leaveGroup(id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    dispatch(leaveGroupRequest(id));

    api(getState).delete(`/api/v1/groups/${id}/accounts`).then(response => {
      dispatch(leaveGroupSuccess(response.data));
    }).catch(error => {
      dispatch(leaveGroupFail(id, error));
    });
  };
};

export function joinGroupRequest(id) {
  return {
    type: GROUP_JOIN_REQUEST,
    id,
  };
};

export function joinGroupSuccess(relationship) {
  return {
    type: GROUP_JOIN_SUCCESS,
    relationship
  };
};

export function joinGroupFail(error) {
  return {
    type: GROUP_JOIN_FAIL,
    error,
  };
};

export function leaveGroupRequest(id) {
  return {
    type: GROUP_LEAVE_REQUEST,
    id,
  };
};

export function leaveGroupSuccess(relationship) {
  return {
    type: GROUP_LEAVE_SUCCESS,
    relationship,
  };
};

export function leaveGroupFail(error) {
  return {
    type: GROUP_LEAVE_FAIL,
    error,
  };
};

export function fetchMembers(id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    dispatch(fetchMembersRequest(id));

    api(getState).get(`/api/v1/groups/${id}/accounts`).then(response => {
      const next = getLinks(response).refs.find(link => link.rel === 'next');

      dispatch(importFetchedAccounts(response.data));
      dispatch(fetchMembersSuccess(id, response.data, next ? next.uri : null));
      dispatch(fetchRelationships(response.data.map(item => item.id)));
    }).catch(error => {
      dispatch(fetchMembersFail(id, error));
    });
  };
};

export function fetchMembersRequest(id) {
  return {
    type: GROUP_MEMBERS_FETCH_REQUEST,
    id,
  };
};

export function fetchMembersSuccess(id, accounts, next) {
  return {
    type: GROUP_MEMBERS_FETCH_SUCCESS,
    id,
    accounts,
    next,
  };
};

export function fetchMembersFail(id, error) {
  return {
    type: GROUP_MEMBERS_FETCH_FAIL,
    id,
    error,
  };
};

export function expandMembers(id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    const url = getState().getIn(['user_lists', 'groups', id, 'next']);

    if (url === null) {
      return;
    }

    dispatch(expandMembersRequest(id));

    api(getState).get(url).then(response => {
      const next = getLinks(response).refs.find(link => link.rel === 'next');

      dispatch(importFetchedAccounts(response.data));
      dispatch(expandMembersSuccess(id, response.data, next ? next.uri : null));
      dispatch(fetchRelationships(response.data.map(item => item.id)));
    }).catch(error => {
      dispatch(expandMembersFail(id, error));
    });
  };
};

export function expandMembersRequest(id) {
  return {
    type: GROUP_MEMBERS_EXPAND_REQUEST,
    id,
  };
};

export function expandMembersSuccess(id, accounts, next) {
  return {
    type: GROUP_MEMBERS_EXPAND_SUCCESS,
    id,
    accounts,
    next,
  };
};

export function expandMembersFail(id, error) {
  return {
    type: GROUP_MEMBERS_EXPAND_FAIL,
    id,
    error,
  };
};

export function fetchRemovedAccounts(id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    dispatch(fetchRemovedAccountsRequest(id));

    api(getState).get(`/api/v1/groups/${id}/removed_accounts`).then(response => {
      const next = getLinks(response).refs.find(link => link.rel === 'next');

      dispatch(importFetchedAccounts(response.data));
      dispatch(fetchRemovedAccountsSuccess(id, response.data, next ? next.uri : null));
      dispatch(fetchRelationships(response.data.map(item => item.id)));
    }).catch(error => {
      dispatch(fetchRemovedAccountsFail(id, error));
    });
  };
};

export function fetchRemovedAccountsRequest(id) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_FETCH_REQUEST,
    id,
  };
};

export function fetchRemovedAccountsSuccess(id, accounts, next) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_FETCH_SUCCESS,
    id,
    accounts,
    next,
  };
};

export function fetchRemovedAccountsFail(id, error) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_FETCH_FAIL,
    id,
    error,
  };
};

export function expandRemovedAccounts(id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    const url = getState().getIn(['user_lists', 'groups_removed_accounts', id, 'next']);

    if (url === null) {
      return;
    }

    dispatch(expandRemovedAccountsRequest(id));

    api(getState).get(url).then(response => {
      const next = getLinks(response).refs.find(link => link.rel === 'next');

      dispatch(importFetchedAccounts(response.data));
      dispatch(expandRemovedAccountsSuccess(id, response.data, next ? next.uri : null));
      dispatch(fetchRelationships(response.data.map(item => item.id)));
    }).catch(error => {
      dispatch(expandRemovedAccountsFail(id, error));
    });
  };
};

export function expandRemovedAccountsRequest(id) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_EXPAND_REQUEST,
    id,
  };
};

export function expandRemovedAccountsSuccess(id, accounts, next) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_EXPAND_SUCCESS,
    id,
    accounts,
    next,
  };
};

export function expandRemovedAccountsFail(id, error) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_EXPAND_FAIL,
    id,
    error,
  };
};

export function removeRemovedAccount(groupId, id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    dispatch(removeRemovedAccountRequest(groupId, id));

    api(getState).delete(`/api/v1/groups/${groupId}/removed_accounts?account_id=${id}`).then(response => {
      dispatch(removeRemovedAccountSuccess(groupId, id));
    }).catch(error => {
      dispatch(removeRemovedAccountFail(groupId, id, error));
    });
  };
};

export function removeRemovedAccountRequest(groupId, id) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_REMOVE_REQUEST,
    groupId,
    id,
  };
};

export function removeRemovedAccountSuccess(groupId, id) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_REMOVE_SUCCESS,
    groupId,
    id,
  };
};

export function removeRemovedAccountFail(groupId, id, error) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_REMOVE_FAIL,
    groupId,
    id,
    error,
  };
};

export function createRemovedAccount(groupId, id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    dispatch(createRemovedAccountRequest(groupId, id));

    api(getState).post(`/api/v1/groups/${groupId}/removed_accounts?account_id=${id}`).then(response => {
      dispatch(createRemovedAccountSuccess(groupId, id));
    }).catch(error => {
      dispatch(createRemovedAccountFail(groupId, id, error));
    });
  };
};

export function createRemovedAccountRequest(groupId, id) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_CREATE_REQUEST,
    groupId,
    id,
  };
};

export function createRemovedAccountSuccess(groupId, id) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_CREATE_SUCCESS,
    groupId,
    id,
  };
};

export function createRemovedAccountFail(groupId, id, error) {
  return {
    type: GROUP_REMOVED_ACCOUNTS_CREATE_FAIL,
    groupId,
    id,
    error,
  };
};

export function groupRemoveStatus(groupId, id) {
  return (dispatch, getState) => {
    if (!getState().get('me')) return;

    dispatch(groupRemoveStatusRequest(groupId, id));

    api(getState).delete(`/api/v1/groups/${groupId}/statuses/${id}`).then(response => {
      dispatch(groupRemoveStatusSuccess(groupId, id));
    }).catch(error => {
      dispatch(groupRemoveStatusFail(groupId, id, error));
    });
  };
};

export function groupRemoveStatusRequest(groupId, id) {
  return {
    type: GROUP_REMOVE_STATUS_REQUEST,
    groupId,
    id,
  };
};

export function groupRemoveStatusSuccess(groupId, id) {
  return {
    type: GROUP_REMOVE_STATUS_SUCCESS,
    groupId,
    id,
  };
};

export function groupRemoveStatusFail(groupId, id, error) {
  return {
    type: GROUP_REMOVE_STATUS_FAIL,
    groupId,
    id,
    error,
  };
};