LBRYCommunity/lbry-desktop
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Fix states not updated in an immutable way.

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It's technically incorrect and was causing the GUI to not update sometimes because the reference did not change, despite the array contents did. The GUI just happens to update most of the time due to other state changes.
This commit is contained in:
infinite-persistence 2021-11-09 22:46:23 +08:00
parent 7cefb0fadc
commit 81d77da17e
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1 changed files with 37 additions and 11 deletions
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48
ui/redux/reducers/comments.js
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@ -50,14 +50,38 @@ const defaultState: CommentsState = {
fetchingBlockedWords: false,
};
function pushToArrayInObject(obj, key, valueToPush) {
// ****************************************************************************
// Immutable helpers
// ****************************************************************************
function immPushToArrayInObject(obj, key, valueToPush) {
if (!obj[key]) {
obj[key] = [valueToPush];
} else if (!obj[key].includes(valueToPush)) {
obj[key].push(valueToPush);
// Filter duplicates
obj[key] = obj[key].concat(valueToPush);
}
}
function immConcatToArrayInObject(obj, key, arrayToMerge) {
if (obj[key]) {
obj[key] = obj[key].concat(arrayToMerge);
} else {
obj[key] = arrayToMerge;
}
}
function immPrefixArrayInObject(obj, key, valueToInsert) {
if (obj[key]) {
obj[key] = [valueToInsert, ...obj[key]];
} else {
obj[key] = [valueToInsert];
}
}
// ****************************************************************************
// ****************************************************************************
export default handleActions(
{
[ACTIONS.COMMENT_CREATE_STARTED]: (state: CommentsState, action: any): CommentsState => ({
@ -298,9 +322,9 @@ export default handleActions(
const comment = comments[i];
commonUpdateAction(comment, commentById, commentIds, i);
if (comment.is_pinned) {
pushToArrayInObject(pinnedCommentsById, claimId, comment.comment_id);
immPushToArrayInObject(pinnedCommentsById, claimId, comment.comment_id);
} else {
pushToArrayInObject(topLevelCommentsById, claimId, comment.comment_id);
immPushToArrayInObject(topLevelCommentsById, claimId, comment.comment_id);
}
}
}
@ -309,11 +333,11 @@ export default handleActions(
for (let i = 0; i < comments.length; ++i) {
const comment = comments[i];
commonUpdateAction(comment, commentById, commentIds, i);
pushToArrayInObject(repliesByParentId, parentId, comment.comment_id);
immPushToArrayInObject(repliesByParentId, parentId, comment.comment_id);
}
}
byId[claimId] ? byId[claimId].push(...commentIds) : (byId[claimId] = commentIds);
immConcatToArrayInObject(byId, claimId, commentIds);
commentsByUri[uri] = claimId;
}
}
@ -353,16 +377,16 @@ export default handleActions(
const updateStore = (comment, commentById, byId, repliesByParentId, topLevelCommentsById) => {
commentById[comment.comment_id] = comment;
byId[claimId] ? byId[claimId].unshift(comment.comment_id) : (byId[claimId] = [comment.comment_id]);
immPrefixArrayInObject(byId, claimId, comment.comment_id);
const parentId = comment.parent_id;
if (comment.parent_id) {
pushToArrayInObject(repliesByParentId, parentId, comment.comment_id);
immPushToArrayInObject(repliesByParentId, parentId, comment.comment_id);
} else {
if (comment.is_pinned) {
pushToArrayInObject(pinnedCommentsById, claimId, comment.comment_id);
immPushToArrayInObject(pinnedCommentsById, claimId, comment.comment_id);
} else {
pushToArrayInObject(topLevelCommentsById, claimId, comment.comment_id);
immPushToArrayInObject(topLevelCommentsById, claimId, comment.comment_id);
}
}
};
@ -372,7 +396,7 @@ export default handleActions(
if (ancestors) {
ancestors.forEach((ancestor) => {
updateStore(ancestor, commentById, byId, repliesByParentId, topLevelCommentsById);
pushToArrayInObject(linkedCommentAncestors, comment.comment_id, ancestor.comment_id);
immPushToArrayInObject(linkedCommentAncestors, comment.comment_id, ancestor.comment_id);
});
}
@ -553,6 +577,8 @@ export default handleActions(
const claimId = comment.claim_id;
for (let i = 0; i < byId[claimId].length; i++) {
if (byId[claimId][i] === comment_id) {
// immutable update
byId[claimId] = Array.from(byId[claimId]);
byId[claimId].splice(i, 1);
break;
}