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index.js
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index.js
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const fs = require("fs");
const path = require("path");
const core = require("@actions/core");
const github = require("@actions/github");
const { markdownTable } = require("markdown-table");
const micromatch = require("micromatch");
const GITHUB_ACTIONS_USER_NAME = "github-actions[bot]";
const GITHUB_ACTIONS_USER_TYPE = "Bot";
const GITHUB_ACTIONS_COMMENT_START_TEXT = `
<details> \n
<summary>Bundled size for the files is listed below:</summary> \n
`;
async function findComment(octokit, { owner, issue_number, repo }) {
for await (const { data: comments } of octokit.paginate.iterator(
octokit.rest.issues.listComments,
{
repo,
owner,
issue_number,
}
)) {
// Search each page for the comment
const comment = comments.find((comment) => {
return (
comment.user.login === GITHUB_ACTIONS_USER_NAME &&
comment.user.type === GITHUB_ACTIONS_USER_TYPE &&
comment.body.startsWith(GITHUB_ACTIONS_COMMENT_START_TEXT)
);
});
if (comment) {
return comment;
}
}
}
function bytesToSize(bytes) {
const sizes = ["Bytes", "KB", "MB", "GB", "TB"];
if (bytes === 0) return "0 Byte";
const i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
return (bytes / Math.pow(1024, i)).toFixed(2) + " " + sizes[i];
}
async function getSizeOutputForDir(dirOrFile) {
const isDir = (await fs.promises.stat(dirOrFile)).isDirectory();
if (isDir) {
const dir = dirOrFile;
core.debug(`Mapping file sizes for ${dir} ...`);
const files = await fs.promises.readdir(dir);
return (
await Promise.all(
files.map((file) =>
Promise.all([file, fs.promises.stat(path.join(dir, file))])
)
)
)
.filter(([, stats]) => !stats.isDirectory())
.map(([file, stats]) => [file, stats.size]);
}
const file = dirOrFile;
return [[file, (await fs.promises.stat(file)).size]];
}
function makeNoDiffTable(sizes) {
const tableHeader = ["File", "File Size"];
const table = [tableHeader];
let totalSize = 0;
sizes.forEach(([file, byteSize]) => {
totalSize += byteSize;
table.push([`**${file}**`, bytesToSize(byteSize)]);
});
table.push(["Total", bytesToSize(totalSize)]);
return table;
}
function getDeltaString(delta) {
return delta === 0
? `No change`
: `${delta > 0 ? "+" : "-"}${bytesToSize(Math.abs(delta))} ${
delta > 0 ? "🔼" : "🔽"
}`;
}
function makeDiffTable(sizes, diffSizes) {
const diffMap = new Map();
diffSizes.forEach(([file, size]) => {
diffMap.set(file, size);
});
const tableHeader = ["File", "File Size", "Diff File Size", "Delta"];
const table = [tableHeader];
let totalSize = 0;
let totalDiffSize = 0;
sizes.forEach(([file, byteSize]) => {
const diffByteSize = diffMap.get(file);
if (diffByteSize !== undefined) {
const delta = byteSize - diffByteSize;
totalSize += byteSize;
totalDiffSize += diffByteSize;
table.push([
`**${file}**`,
bytesToSize(byteSize),
bytesToSize(diffByteSize),
getDeltaString(delta),
]);
} else {
table.push([`**${file}**`, bytesToSize(byteSize), "-", "-"]);
}
});
table.push([
"Total",
bytesToSize(totalSize),
bytesToSize(totalDiffSize),
getDeltaString(totalSize - totalDiffSize),
]);
return table;
}
async function run() {
try {
// --------------- octokit initialization ---------------
const token = core.getInput("token");
const updateComment = core.getBooleanInput("update_comment");
const path = core.getInput("path");
const diffPath = core.getInput("diff_path");
const fileGlobPattern = core.getMultilineInput("file_glob_pattern");
const octokit = new github.getOctokit(token);
const context = github.context;
const pullRequest = context.payload.pull_request;
const owner = context.payload.repository.owner.login;
const repo = context.payload.repository.name;
const arrayOutput = await getSizeOutputForDir(path);
const filteredOutput = arrayOutput
.filter(([file]) => micromatch.isMatch(file, fileGlobPattern))
.sort(([, a], [, b]) => a - b);
const table = diffPath
? makeDiffTable(filteredOutput, await getSizeOutputForDir(diffPath))
: makeNoDiffTable(filteredOutput);
const markdownTableStr = markdownTable(table);
core.debug("Outputting table:");
core.debug(markdownTableStr);
const markdown = `
<details> \n
<summary>Bundled size for the files is listed below:</summary> \n
<br> \n
${markdownTableStr} \n
</details>
`;
if (pullRequest) {
const existingComment = await findComment(octokit, {
owner,
issue_number: pullRequest.number,
repo,
});
// If the comment exists then update instead of creating a new one.
if (existingComment && updateComment) {
await octokit.rest.issues.updateComment({
owner,
repo,
comment_id: existingComment.id,
body: markdown,
});
} else {
// on pull request commit push add comment to pull request
await octokit.rest.issues.createComment({
owner,
repo,
issue_number: pullRequest.number,
body: markdown,
});
}
} else {
core.notice("Did not run since we're not in a PR.");
}
// --------------- End Comment repo size ---------------
} catch (error) {
core.error(error.stack);
core.setFailed(error.message);
}
}
run();