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<script>
import paginatedTreeQuery from 'shared_queries/repository/paginated_tree.query.graphql';
import createFlash from '~/flash';
import glFeatureFlagMixin from '~/vue_shared/mixins/gl_feature_flags_mixin';
import { __ } from '~/locale';
import {
TREE_PAGE_SIZE,
TREE_INITIAL_FETCH_COUNT,
TREE_PAGE_LIMIT,
COMMIT_BATCH_SIZE,
} from '../constants';
import getRefMixin from '../mixins/get_ref';
import projectPathQuery from '../queries/project_path.query.graphql';
import { readmeFile } from '../utils/readme';
import { loadCommits, isRequested, resetRequestedCommits } from '../commits_service';
import FilePreview from './preview/index.vue';
import FileTable from './table/index.vue';
export default {
components: {
FileTable,
FilePreview,
},
mixins: [getRefMixin, glFeatureFlagMixin()],
apollo: {
projectPath: {
query: projectPathQuery,
},
},
props: {
path: {
type: String,
required: false,
default: '/',
},
loadingPath: {
type: String,
required: false,
default: '',
},
},
data() {
return {
commits: [],
projectPath: '',
nextPageCursor: '',
pagesLoaded: 1,
entries: {
trees: [],
submodules: [],
blobs: [],
},
isLoadingFiles: false,
isOverLimit: false,
clickedShowMore: false,
fetchCounter: 0,
};
},
computed: {
pageSize() {
// we want to exponentially increase the page size to reduce the load on the frontend
const exponentialSize = (TREE_PAGE_SIZE / TREE_INITIAL_FETCH_COUNT) * (this.fetchCounter + 1);
return exponentialSize < TREE_PAGE_SIZE && this.glFeatures.increasePageSizeExponentially
? exponentialSize
: TREE_PAGE_SIZE;
},
totalEntries() {
return Object.values(this.entries).flat().length;
},
readme() {
return readmeFile(this.entries.blobs);
},
pageLimitReached() {
return this.totalEntries / this.pagesLoaded >= TREE_PAGE_LIMIT;
},
hasShowMore() {
return !this.clickedShowMore && this.pageLimitReached;
},
},
watch: {
$route: function routeChange() {
this.entries.trees = [];
this.entries.submodules = [];
this.entries.blobs = [];
this.nextPageCursor = '';
resetRequestedCommits();
this.fetchFiles();
},
},
mounted() {
// We need to wait for `ref` and `projectPath` to be set
this.$nextTick(() => {
resetRequestedCommits();
this.fetchFiles();
});
},
methods: {
fetchFiles() {
const originalPath = this.path || '/';
this.isLoadingFiles = true;
return this.$apollo
.query({
query: paginatedTreeQuery,
variables: {
projectPath: this.projectPath,
ref: this.ref,
path: originalPath,
nextPageCursor: this.nextPageCursor,
pageSize: this.pageSize,
},
})
.then(({ data }) => {
if (data.errors) throw data.errors;
if (!data?.project?.repository || originalPath !== (this.path || '/')) return;
const {
project: {
repository: {
paginatedTree: { pageInfo },
},
},
} = data;
this.isLoadingFiles = false;
this.entries = Object.keys(this.entries).reduce(
(acc, key) => ({
...acc,
[key]: this.normalizeData(key, data.project.repository.paginatedTree.nodes[0][key]),
}),
{},
);
if (pageInfo?.hasNextPage) {
this.nextPageCursor = pageInfo.endCursor;
this.fetchCounter += 1;
if (!this.pageLimitReached || this.clickedShowMore) {
this.fetchFiles();
this.clickedShowMore = false;
}
}
})
.catch((error) => {
createFlash({
message: __('An error occurred while fetching folder content.'),
});
throw error;
});
},
normalizeData(key, data) {
return this.entries[key].concat(data.nodes);
},
hasNextPage(data) {
return []
.concat(data.trees.pageInfo, data.submodules.pageInfo, data.blobs.pageInfo)
.find(({ hasNextPage }) => hasNextPage);
},
handleRowAppear(rowNumber) {
if (!this.glFeatures.lazyLoadCommits || isRequested(rowNumber)) {
return;
}
// Since a user could scroll either up or down, we want to support lazy loading in both directions
this.loadCommitData(rowNumber);
if (rowNumber - COMMIT_BATCH_SIZE >= 0) {
this.loadCommitData(rowNumber - COMMIT_BATCH_SIZE);
}
},
loadCommitData(rowNumber) {
loadCommits(this.projectPath, this.path, this.ref, rowNumber)
.then(this.setCommitData)
.catch(() => {});
},
setCommitData(data) {
this.commits = this.commits.concat(data);
},
handleShowMore() {
this.clickedShowMore = true;
this.pagesLoaded += 1;
this.fetchFiles();
},
},
};
</script>
<template>
<div>
<file-table
:path="path"
:entries="entries"
:is-loading="isLoadingFiles"
:loading-path="loadingPath"
:has-more="hasShowMore"
:commits="commits"
@showMore="handleShowMore"
@row-appear="handleRowAppear"
/>
<file-preview v-if="readme" :blob="readme" />
</div>
</template>
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