Add ability to filter individual posts (#18945)

* Add database table for status-specific filters

* Add REST endpoints, entities and attributes

* Show status filters in /filters interface

* Perform server-side filtering for individual posts filters

* Fix filtering on context mismatch

* Refactor `toServerSideType` by moving it to its own module

* Move loupe and delete icons to their own module

* Add ability to filter individual posts from WebUI

* Replace keyword list by warnings (expired, context mismatch)

* Refactor server-side filtering code

* Add tests

1 files changed, 93 insertions, 0 deletions

diff --git a/app/javascript/mastodon/actions/filters.js b/app/javascript/mastodon/actions/filters.js
new file mode 100644
index 000000000..76326802e
--- /dev/null
+++ b/app/javascript/mastodon/actions/filters.js
@@ -0,0 +1,93 @@
+import api from '../api';
+import { openModal } from './modal';
+
+export const FILTERS_FETCH_REQUEST = 'FILTERS_FETCH_REQUEST';
+export const FILTERS_FETCH_SUCCESS = 'FILTERS_FETCH_SUCCESS';
+export const FILTERS_FETCH_FAIL    = 'FILTERS_FETCH_FAIL';
+
+export const FILTERS_STATUS_CREATE_REQUEST = 'FILTERS_STATUS_CREATE_REQUEST';
+export const FILTERS_STATUS_CREATE_SUCCESS = 'FILTERS_STATUS_CREATE_SUCCESS';
+export const FILTERS_STATUS_CREATE_FAIL    = 'FILTERS_STATUS_CREATE_FAIL';
+
+export const FILTERS_CREATE_REQUEST = 'FILTERS_CREATE_REQUEST';
+export const FILTERS_CREATE_SUCCESS = 'FILTERS_CREATE_SUCCESS';
+export const FILTERS_CREATE_FAIL    = 'FILTERS_CREATE_FAIL';
+
+export const initAddFilter = (status, { contextType }) => dispatch =>
+  dispatch(openModal('FILTER', {
+    statusId: status?.get('id'),
+    contextType: contextType,
+  }));
+
+export const fetchFilters = () => (dispatch, getState) => {
+  dispatch({
+    type: FILTERS_FETCH_REQUEST,
+    skipLoading: true,
+  });
+
+  api(getState)
+    .get('/api/v2/filters')
+    .then(({ data }) => dispatch({
+      type: FILTERS_FETCH_SUCCESS,
+      filters: data,
+      skipLoading: true,
+    }))
+    .catch(err => dispatch({
+      type: FILTERS_FETCH_FAIL,
+      err,
+      skipLoading: true,
+      skipAlert: true,
+    }));
+};
+
+export const createFilterStatus = (params, onSuccess, onFail) => (dispatch, getState) => {
+  dispatch(createFilterStatusRequest());
+
+  api(getState).post(`/api/v1/filters/${params.filter_id}/statuses`, params).then(response => {
+    dispatch(createFilterStatusSuccess(response.data));
+    if (onSuccess) onSuccess();
+  }).catch(error => {
+    dispatch(createFilterStatusFail(error));
+    if (onFail) onFail();
+  });
+};
+
+export const createFilterStatusRequest = () => ({
+  type: FILTERS_STATUS_CREATE_REQUEST,
+});
+
+export const createFilterStatusSuccess = filter_status => ({
+  type: FILTERS_STATUS_CREATE_SUCCESS,
+  filter_status,
+});
+
+export const createFilterStatusFail = error => ({
+  type: FILTERS_STATUS_CREATE_FAIL,
+  error,
+});
+
+export const createFilter = (params, onSuccess, onFail) => (dispatch, getState) => {
+  dispatch(createFilterRequest());
+
+  api(getState).post('/api/v2/filters', params).then(response => {
+    dispatch(createFilterSuccess(response.data));
+    if (onSuccess) onSuccess(response.data);
+  }).catch(error => {
+    dispatch(createFilterFail(error));
+    if (onFail) onFail();
+  });
+};
+
+export const createFilterRequest = () => ({
+  type: FILTERS_CREATE_REQUEST,
+});
+
+export const createFilterSuccess = filter => ({
+  type: FILTERS_CREATE_SUCCESS,
+  filter,
+});
+
+export const createFilterFail = error => ({
+  type: FILTERS_CREATE_FAIL,
+  error,
+});