hometown/app/javascript/mastodon/reducers/timelines.js

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import {
TIMELINE_REFRESH_REQUEST,
TIMELINE_REFRESH_SUCCESS,
TIMELINE_REFRESH_FAIL,
TIMELINE_UPDATE,
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TIMELINE_DELETE,
TIMELINE_EXPAND_SUCCESS,
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TIMELINE_EXPAND_REQUEST,
TIMELINE_EXPAND_FAIL,
TIMELINE_SCROLL_TOP,
TIMELINE_CONNECT,
TIMELINE_DISCONNECT
} from '../actions/timelines';
import {
REBLOG_SUCCESS,
UNREBLOG_SUCCESS,
FAVOURITE_SUCCESS,
UNFAVOURITE_SUCCESS
} from '../actions/interactions';
import {
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ACCOUNT_TIMELINE_FETCH_REQUEST,
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ACCOUNT_TIMELINE_FETCH_SUCCESS,
ACCOUNT_TIMELINE_FETCH_FAIL,
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ACCOUNT_TIMELINE_EXPAND_REQUEST,
ACCOUNT_TIMELINE_EXPAND_SUCCESS,
ACCOUNT_TIMELINE_EXPAND_FAIL,
ACCOUNT_MEDIA_TIMELINE_FETCH_REQUEST,
ACCOUNT_MEDIA_TIMELINE_FETCH_SUCCESS,
ACCOUNT_MEDIA_TIMELINE_FETCH_FAIL,
ACCOUNT_MEDIA_TIMELINE_EXPAND_REQUEST,
ACCOUNT_MEDIA_TIMELINE_EXPAND_SUCCESS,
ACCOUNT_MEDIA_TIMELINE_EXPAND_FAIL,
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ACCOUNT_BLOCK_SUCCESS,
ACCOUNT_MUTE_SUCCESS
} from '../actions/accounts';
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import {
CONTEXT_FETCH_SUCCESS
} from '../actions/statuses';
import Immutable from 'immutable';
const initialState = Immutable.Map({
home: Immutable.Map({
path: () => '/api/v1/timelines/home',
next: null,
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isLoading: false,
online: false,
loaded: false,
top: true,
unread: 0,
items: Immutable.List()
}),
public: Immutable.Map({
path: () => '/api/v1/timelines/public',
next: null,
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isLoading: false,
online: false,
loaded: false,
top: true,
unread: 0,
items: Immutable.List()
}),
community: Immutable.Map({
path: () => '/api/v1/timelines/public',
next: null,
params: { local: true },
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isLoading: false,
online: false,
loaded: false,
top: true,
unread: 0,
items: Immutable.List()
}),
tag: Immutable.Map({
path: (id) => `/api/v1/timelines/tag/${id}`,
next: null,
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isLoading: false,
id: null,
loaded: false,
top: true,
unread: 0,
items: Immutable.List()
}),
accounts_timelines: Immutable.Map(),
accounts_media_timelines: Immutable.Map(),
ancestors: Immutable.Map(),
descendants: Immutable.Map()
});
const normalizeStatus = (state, status) => {
const replyToId = status.get('in_reply_to_id');
const id = status.get('id');
if (replyToId) {
if (!state.getIn(['descendants', replyToId], Immutable.List()).includes(id)) {
state = state.updateIn(['descendants', replyToId], Immutable.List(), set => set.push(id));
}
if (!state.getIn(['ancestors', id], Immutable.List()).includes(replyToId)) {
state = state.updateIn(['ancestors', id], Immutable.List(), set => set.push(replyToId));
}
}
return state;
};
const normalizeTimeline = (state, timeline, statuses, next) => {
let ids = Immutable.List();
const loaded = state.getIn([timeline, 'loaded']);
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statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
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ids = ids.set(i, status.get('id'));
});
state = state.setIn([timeline, 'loaded'], true);
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state = state.setIn([timeline, 'isLoading'], false);
if (state.getIn([timeline, 'next']) === null) {
state = state.setIn([timeline, 'next'], next);
}
return state.updateIn([timeline, 'items'], Immutable.List(), list => (loaded ? ids.concat(list) : ids));
};
const appendNormalizedTimeline = (state, timeline, statuses, next) => {
let moreIds = Immutable.List();
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statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
moreIds = moreIds.set(i, status.get('id'));
});
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state = state.setIn([timeline, 'isLoading'], false);
state = state.setIn([timeline, 'next'], next);
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return state.updateIn([timeline, 'items'], Immutable.List(), list => list.concat(moreIds));
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};
const normalizeAccountTimeline = (state, accountId, statuses, replace = false) => {
let ids = Immutable.List();
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statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
ids = ids.set(i, status.get('id'));
});
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return state.updateIn(['accounts_timelines', accountId], Immutable.Map(), map => map
.set('isLoading', false)
.set('loaded', true)
.set('next', true)
.update('items', Immutable.List(), list => (replace ? ids : ids.concat(list))));
};
const normalizeAccountMediaTimeline = (state, accountId, statuses, next) => {
let ids = Immutable.List();
statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
ids = ids.set(i, status.get('id'));
});
return state.updateIn(['accounts_media_timelines', accountId], Immutable.Map(), map => map
.set('isLoading', false)
.set('next', next)
.update('items', Immutable.List(), list => ids.concat(list)));
};
const appendNormalizedAccountTimeline = (state, accountId, statuses, next) => {
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let moreIds = Immutable.List([]);
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statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
moreIds = moreIds.set(i, status.get('id'));
});
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return state.updateIn(['accounts_timelines', accountId], Immutable.Map(), map => map
.set('isLoading', false)
.set('next', next)
.update('items', list => list.concat(moreIds)));
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};
const appendNormalizedAccountMediaTimeline = (state, accountId, statuses, next) => {
let moreIds = Immutable.List([]);
statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
moreIds = moreIds.set(i, status.get('id'));
});
return state.updateIn(['accounts_media_timelines', accountId], Immutable.Map(), map => map
.set('isLoading', false)
.set('next', next)
.update('items', list => list.concat(moreIds)));
};
const updateTimeline = (state, timeline, status, references) => {
const top = state.getIn([timeline, 'top']);
state = normalizeStatus(state, status);
if (!top) {
state = state.updateIn([timeline, 'unread'], unread => unread + 1);
}
state = state.updateIn([timeline, 'items'], Immutable.List(), list => {
if (top && list.size > 40) {
list = list.take(20);
}
if (list.includes(status.get('id'))) {
return list;
}
const reblogOfId = status.getIn(['reblog', 'id'], null);
if (reblogOfId !== null) {
list = list.filterNot(itemId => references.includes(itemId));
}
return list.unshift(status.get('id'));
});
return state;
};
const deleteStatus = (state, id, accountId, references, reblogOf) => {
if (reblogOf) {
// If we are deleting a reblog, just replace reblog with its original
return state.updateIn(['home', 'items'], list => list.map(item => item === id ? reblogOf : item));
}
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// Remove references from timelines
['home', 'public', 'community', 'tag'].forEach(function (timeline) {
state = state.updateIn([timeline, 'items'], list => list.filterNot(item => item === id));
});
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// Remove references from account timelines
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state = state.updateIn(['accounts_timelines', accountId, 'items'], Immutable.List([]), list => list.filterNot(item => item === id));
state = state.updateIn(['accounts_media_timelines', accountId, 'items'], Immutable.List([]), list => list.filterNot(item => item === id));
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// Remove references from context
state.getIn(['descendants', id], Immutable.List()).forEach(descendantId => {
state = state.updateIn(['ancestors', descendantId], Immutable.List(), list => list.filterNot(itemId => itemId === id));
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});
state.getIn(['ancestors', id], Immutable.List()).forEach(ancestorId => {
state = state.updateIn(['descendants', ancestorId], Immutable.List(), list => list.filterNot(itemId => itemId === id));
});
state = state.deleteIn(['descendants', id]).deleteIn(['ancestors', id]);
// Remove reblogs of deleted status
references.forEach(ref => {
state = deleteStatus(state, ref[0], ref[1], []);
});
return state;
};
const filterTimelines = (state, relationship, statuses) => {
let references;
statuses.forEach(status => {
if (status.get('account') !== relationship.id) {
return;
}
references = statuses.filter(item => item.get('reblog') === status.get('id')).map(item => [item.get('id'), item.get('account')]);
state = deleteStatus(state, status.get('id'), status.get('account'), references);
});
return state;
};
const normalizeContext = (state, id, ancestors, descendants) => {
const ancestorsIds = ancestors.map(ancestor => ancestor.get('id'));
const descendantsIds = descendants.map(descendant => descendant.get('id'));
return state.withMutations(map => {
map.setIn(['ancestors', id], ancestorsIds);
map.setIn(['descendants', id], descendantsIds);
});
};
const resetTimeline = (state, timeline, id) => {
if (timeline === 'tag' && typeof id !== 'undefined' && state.getIn([timeline, 'id']) !== id) {
state = state.update(timeline, map => map
.set('id', id)
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.set('isLoading', true)
.set('loaded', false)
.set('next', null)
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.set('top', true)
.update('items', list => list.clear()));
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} else {
state = state.setIn([timeline, 'isLoading'], true);
}
return state;
};
const updateTop = (state, timeline, top) => {
if (top) {
state = state.setIn([timeline, 'unread'], 0);
}
return state.setIn([timeline, 'top'], top);
};
export default function timelines(state = initialState, action) {
switch(action.type) {
case TIMELINE_REFRESH_REQUEST:
case TIMELINE_EXPAND_REQUEST:
return resetTimeline(state, action.timeline, action.id);
case TIMELINE_REFRESH_FAIL:
case TIMELINE_EXPAND_FAIL:
return state.setIn([action.timeline, 'isLoading'], false);
case TIMELINE_REFRESH_SUCCESS:
return normalizeTimeline(state, action.timeline, Immutable.fromJS(action.statuses), action.next);
case TIMELINE_EXPAND_SUCCESS:
return appendNormalizedTimeline(state, action.timeline, Immutable.fromJS(action.statuses), action.next);
case TIMELINE_UPDATE:
return updateTimeline(state, action.timeline, Immutable.fromJS(action.status), action.references);
case TIMELINE_DELETE:
return deleteStatus(state, action.id, action.accountId, action.references, action.reblogOf);
case CONTEXT_FETCH_SUCCESS:
return normalizeContext(state, action.id, Immutable.fromJS(action.ancestors), Immutable.fromJS(action.descendants));
case ACCOUNT_TIMELINE_FETCH_REQUEST:
case ACCOUNT_TIMELINE_EXPAND_REQUEST:
return state.updateIn(['accounts_timelines', action.id], Immutable.Map(), map => map.set('isLoading', true));
case ACCOUNT_TIMELINE_FETCH_FAIL:
case ACCOUNT_TIMELINE_EXPAND_FAIL:
return state.updateIn(['accounts_timelines', action.id], Immutable.Map(), map => map.set('isLoading', false));
case ACCOUNT_TIMELINE_FETCH_SUCCESS:
return normalizeAccountTimeline(state, action.id, Immutable.fromJS(action.statuses), action.replace);
case ACCOUNT_TIMELINE_EXPAND_SUCCESS:
return appendNormalizedAccountTimeline(state, action.id, Immutable.fromJS(action.statuses), action.next);
case ACCOUNT_MEDIA_TIMELINE_FETCH_REQUEST:
case ACCOUNT_MEDIA_TIMELINE_EXPAND_REQUEST:
return state.updateIn(['accounts_media_timelines', action.id], Immutable.Map(), map => map.set('isLoading', true));
case ACCOUNT_MEDIA_TIMELINE_FETCH_FAIL:
case ACCOUNT_MEDIA_TIMELINE_EXPAND_FAIL:
return state.updateIn(['accounts_media_timelines', action.id], Immutable.Map(), map => map.set('isLoading', false));
case ACCOUNT_MEDIA_TIMELINE_FETCH_SUCCESS:
return normalizeAccountMediaTimeline(state, action.id, Immutable.fromJS(action.statuses), action.next);
case ACCOUNT_MEDIA_TIMELINE_EXPAND_SUCCESS:
return appendNormalizedAccountMediaTimeline(state, action.id, Immutable.fromJS(action.statuses), action.next);
case ACCOUNT_BLOCK_SUCCESS:
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case ACCOUNT_MUTE_SUCCESS:
return filterTimelines(state, action.relationship, action.statuses);
case TIMELINE_SCROLL_TOP:
return updateTop(state, action.timeline, action.top);
case TIMELINE_CONNECT:
return state.setIn([action.timeline, 'online'], true);
case TIMELINE_DISCONNECT:
return state.setIn([action.timeline, 'online'], false);
default:
return state;
}
};