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import React from 'dom-chef';
import {CachedFunction} from 'webext-storage-cache';
import {isFirefox} from 'webext-detect-page';
import * as pageDetect from 'github-url-detection';
import {AlertIcon, GitPullRequestIcon} from '@primer/octicons-react';
import features from '../feature-manager.js';
import api from '../github-helpers/api.js';
import getDefaultBranch from '../github-helpers/get-default-branch.js';
import {buildRepoURL, cacheByRepo} from '../github-helpers/index.js';
import GitHubFileURL from '../github-helpers/github-file-url.js';
import observe from '../helpers/selector-observer.js';
import listPrsForFileQuery from './list-prs-for-file.gql';
function getPRUrl(prNumber: number): string {
// https://caniuse.com/url-scroll-to-text-fragment
const hash = isFirefox() ? '' : `#:~:text=${new GitHubFileURL(location.href).filePath}`;
return buildRepoURL('pull', prNumber, 'files') + hash;
}
function getHovercardUrl(prNumber: number): string {
return buildRepoURL('pull', prNumber, 'hovercard');
}
function getDropdown(prs: number[]): HTMLElement {
const isEditing = pageDetect.isEditingFile();
const icon = isEditing
? <AlertIcon className="v-align-middle color-fg-attention"/>
: <GitPullRequestIcon className="v-align-middle"/>;
// Markup copied from https://primer.style/css/components/dropdown
return (
<details className="dropdown details-reset details-overlay flex-self-center">
<summary className="btn btn-sm">
{icon}
<span className="v-align-middle"> {prs.length} </span>
<div className="dropdown-caret"/>
</summary>
<details-menu className="dropdown-menu dropdown-menu-sw" style={{width: '13em'}}>
<div className="dropdown-header">
File also being edited in
</div>
{prs.map(prNumber => (
<a
className="dropdown-item"
href={getPRUrl(prNumber)}
data-hovercard-url={getHovercardUrl(prNumber)}
>
#{prNumber}
</a>
))}
</details-menu>
</details>
);
}
/**
@returns prsByFile {"filename1": [10, 3], "filename2": [2]}
*/
const getPrsByFile = new CachedFunction('files-with-prs', {
async updater(): Promise<Record<string, number[]>> {
const {repository} = await api.v4(listPrsForFileQuery, {
variables: {
defaultBranch: await getDefaultBranch(),
},
});
const files: Record<string, number[]> = {};
for (const pr of repository.pullRequests.nodes) {
for (const {path} of pr.files.nodes) {
files[path] = files[path] ?? [];
if (files[path].length < 10) {
files[path].push(pr.number);
}
}
}
return files;
},
maxAge: {hours: 2},
staleWhileRevalidate: {days: 9},
cacheKey: cacheByRepo,
});
async function addToSingleFile(moreFileActionsDropdown: HTMLElement): Promise<void> {
const path = new GitHubFileURL(location.href).filePath;
const prsByFile = await getPrsByFile.get();
const prs = prsByFile[path];
if (prs) {
const dropdown = getDropdown(prs);
if (!moreFileActionsDropdown.parentElement!.matches('.gap-2')) {
dropdown.classList.add('mr-2');
}
moreFileActionsDropdown.before(dropdown);
}
}
async function addToEditingFile(saveButton: HTMLElement): Promise<false | void> {
const path = new GitHubFileURL(location.href).filePath;
const prsByFile = await getPrsByFile.get();
let prs = prsByFile[path];
if (!prs) {
return;
}
const editingPRNumber = new URLSearchParams(location.search).get('pr')?.split('/').slice(-1);
if (editingPRNumber) {
prs = prs.filter(pr => pr !== Number(editingPRNumber));
if (prs.length === 0) {
return;
}
}
const dropdown = getDropdown(prs);
dropdown.classList.add('mr-2');
saveButton.parentElement!.prepend(dropdown);
}
function initSingleFile(signal: AbortSignal): void {
observe('[aria-label="More file actions"]', addToSingleFile, {signal});
}
function initEditingFile(signal: AbortSignal): void {
observe('[data-hotkey="Meta+s,Control+s"]', addToEditingFile, {signal});
}
void features.add(import.meta.url, {
include: [
pageDetect.isSingleFile,
],
exclude: [
pageDetect.isRepoFile404,
],
init: initSingleFile,
}, {
include: [
pageDetect.isEditingFile,
],
exclude: [
pageDetect.isBlank,
],
awaitDomReady: true, // End of the page; DOM-based detections
init: initEditingFile,
});
/*
## Test URLs
- isSingleFile: One PR https://github.com/refined-github/sandbox/blob/6619/6619
- isSingleFile: Multiple PRs https://github.com/refined-github/sandbox/blob/default-a/README.md
- isEditingFile: One PR https://github.com/refined-github/sandbox/edit/6619/6619
- isEditingFile: Multiple PRs https://github.com/refined-github/sandbox/edit/default-a/README.md
*/
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