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import {
TIMELINE_REFRESH_REQUEST,
TIMELINE_REFRESH_SUCCESS,
TIMELINE_UPDATE,
TIMELINE_DELETE,
TIMELINE_EXPAND_SUCCESS,
TIMELINE_SCROLL_TOP
} from '../actions/timelines';
import {
REBLOG_SUCCESS,
UNREBLOG_SUCCESS,
FAVOURITE_SUCCESS,
UNFAVOURITE_SUCCESS
} from '../actions/interactions';
import {
ACCOUNT_FETCH_SUCCESS,
ACCOUNT_TIMELINE_FETCH_SUCCESS,
ACCOUNT_TIMELINE_EXPAND_SUCCESS,
ACCOUNT_BLOCK_SUCCESS
} from '../actions/accounts';
import {
STATUS_FETCH_SUCCESS,
CONTEXT_FETCH_SUCCESS
} from '../actions/statuses';
import Immutable from 'immutable';
const initialState = Immutable.Map({
home: Immutable.Map({
loaded: false,
top: true,
items: Immutable.List()
}),
mentions: Immutable.Map({
loaded: false,
top: true,
items: Immutable.List()
}),
public: Immutable.Map({
loaded: false,
top: true,
items: Immutable.List()
}),
tag: Immutable.Map({
id: null,
loaded: false,
top: true,
items: Immutable.List()
}),
accounts_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, replace = false) => {
let ids = Immutable.List();
const loaded = state.getIn([timeline, 'loaded']);
statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
ids = ids.set(i, status.get('id'));
});
state = state.setIn([timeline, 'loaded'], true);
return state.updateIn([timeline, 'items'], Immutable.List(), list => (loaded ? list.unshift(...ids) : ids));
};
const appendNormalizedTimeline = (state, timeline, statuses) => {
let moreIds = Immutable.List();
statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
moreIds = moreIds.set(i, status.get('id'));
});
return state.updateIn([timeline, 'items'], Immutable.List(), list => list.push(...moreIds));
};
const normalizeAccountTimeline = (state, accountId, statuses, replace = false) => {
let ids = Immutable.List();
statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
ids = ids.set(i, status.get('id'));
});
return state.updateIn(['accounts_timelines', accountId], Immutable.List([]), list => (replace ? ids : list.unshift(...ids)));
};
const appendNormalizedAccountTimeline = (state, accountId, statuses) => {
let moreIds = Immutable.List([]);
statuses.forEach((status, i) => {
state = normalizeStatus(state, status);
moreIds = moreIds.set(i, status.get('id'));
});
return state.updateIn(['accounts_timelines', accountId], Immutable.List([]), list => list.push(...moreIds));
};
const updateTimeline = (state, timeline, status, references) => {
const top = state.getIn([timeline, 'top']);
state = normalizeStatus(state, status);
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) => {
// Remove references from timelines
['home', 'mentions', 'public', 'tag'].forEach(function (timeline) {
state = state.updateIn([timeline, 'items'], list => list.filterNot(item => item === id));
});
// Remove references from account timelines
state = state.updateIn(['accounts_timelines', accountId], Immutable.List([]), list => list.filterNot(item => item === id));
// 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));
});
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' && state.getIn([timeline, 'id']) !== id) {
state = state.update(timeline, map => map
.set('id', id)
.set('loaded', false)
.update('items', list => list.clear()));
}
return state;
};
export default function timelines(state = initialState, action) {
switch(action.type) {
case TIMELINE_REFRESH_REQUEST:
return resetTimeline(state, action.timeline, action.id);
case TIMELINE_REFRESH_SUCCESS:
return normalizeTimeline(state, action.timeline, Immutable.fromJS(action.statuses));
case TIMELINE_EXPAND_SUCCESS:
return appendNormalizedTimeline(state, action.timeline, Immutable.fromJS(action.statuses));
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);
case CONTEXT_FETCH_SUCCESS:
return normalizeContext(state, action.id, Immutable.fromJS(action.ancestors), Immutable.fromJS(action.descendants));
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));
case ACCOUNT_BLOCK_SUCCESS:
return filterTimelines(state, action.relationship, action.statuses);
case TIMELINE_SCROLL_TOP:
return state.setIn([action.timeline, 'top'], action.top);
default:
return state;
}
};
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