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refactor: fix typo, rename variable, add comments, improve code quality

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This commit is contained in:
Y-k-Y 2022-05-12 23:39:53 +09:00
parent db0614c614
commit f4e7264a82
1 changed files with 26 additions and 15 deletions
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41
src/backend/controllers/pages.ts
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@ -79,7 +79,7 @@ class Pages {
const orphanPageOrder: PageOrder[] = [];
/**
* If there is no root nad child page order, then it returns empty array
* If there is no root and child page order, then it returns an empty array
*/
if (!rootPageOrder || (!rootPageOrder && childPageOrder.length <= 0)) {
return [];
@ -90,31 +90,38 @@ class Pages {
return map;
}, new Map);
const rootPagesId = rootPageOrder.order;
const idsOfRootPages = rootPageOrder.order;
/**
* It groups root pages and 1 level pages by its parent
*/
rootPagesId.reduce((prev, curr, idx) => {
const childPages = childPageOrder.filter((child, _idx) => {
if (child.page === curr) {
childPageOrder.splice(_idx, 1);
idsOfRootPages.reduce((prev, curr, idx) => {
const childPages:PageOrder[] = [];
return child;
childPageOrder.forEach((pageOrder, _idx) => {
if (pageOrder.page === curr) {
childPages.push(pageOrder);
childPageOrder.splice(_idx, 1);
}
});
const hasChildPage = childPages.length > 0;
prev[curr] = [];
prev[curr].push(curr);
/**
* It attaches 1 level page id to its parent page id
*/
if (hasChildPage) {
prev[curr] = [];
prev[curr].push(curr);
prev[curr].push(...childPages[0].order);
} else {
prev[curr] = [];
prev[curr].push(curr);
}
if (idx === rootPagesId.length - 1 && childPageOrder.length > 0) {
/**
* If non-attached childPages which is not 1 level page still remains,
* It is stored as an orphan page so that it can be processed in the next statements
*/
if (idx === idsOfRootPages.length - 1 && childPageOrder.length > 0) {
orphanPageOrder.push(...childPageOrder);
}
@ -126,9 +133,13 @@ class Pages {
*/
while (orphanPageOrder.length > 0) {
orphanPageOrder.forEach((orphanOrder, idx) => {
Object.entries(orderGroupedByParent).forEach(([key, value]) => {
// It loops each of grouped orders formatted as [root page id(1): corresponding child pages id(2)]
Object.entries(orderGroupedByParent).forEach(([parentPageId, value]) => {
// If (2) contains orphanOrder's parent id(page)
if (orphanOrder.page && orphanOrder.order && value.includes(orphanOrder.page)) {
orderGroupedByParent[key].splice(value.indexOf(orphanOrder.page) + 1, 0, ...orphanOrder.order);
// Append orphanOrder's id(order) into its parent id
orderGroupedByParent[parentPageId].splice(value.indexOf(orphanOrder.page) + 1, 0, ...orphanOrder.order);
// Finally, remove orphanOrder from orphanPageOrder
orphanPageOrder.splice(idx, 1);
}
});