126 lines
3.6 KiB
JavaScript
126 lines
3.6 KiB
JavaScript
#!/usr/bin/env node
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import { spawnSync } from "node:child_process";
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import assert from "node:assert";
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import { mkdirSync, copyFileSync } from "node:fs";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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import process from "node:process";
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// Generate a list of changes to "lib/games.js" where game IDs have been changed via the git history.
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// Requires git to be installed.
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// Make sure you don't have any local un-committed changes to lib/games.js
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// Usage: node tools/find-id-changes.js > id-changes.json
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// Output is an array of
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// {
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// "hash": "git commit hash",
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// "changes": [ ["oldid", "newid"], ... ],
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// "removed": [ "removedid", ... ],
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// "added": [ "addedid", ... ]
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// }
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// The output can be converted to a map of { "oldid": "newid" } using a jq command:
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// cat id-changes.json | jq ".[].changes | map({ (.[0]): .[1] } ) | add" | jq -s "add"
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const main = async (rootDir) => {
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// Make sure CWD is the root of the repo
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process.chdir(rootDir);
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// Get list of commits that have modified lib/games.js
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const gitLog = spawnSync(
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"git",
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[
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"log",
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"--follow",
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"--format=%H",
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"--diff-filter=M",
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"--reverse",
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"--",
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"lib/games.js",
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],
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{ encoding: "utf-8" }
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);
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// Make a directory to store files in
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mkdirSync("game_changes", { recursive: true });
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const output = [];
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for (const commitHash of gitLog.stdout.split("\n")) {
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if (commitHash.length === 0) continue;
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// Checkout lib/games.js before the commit that changed it
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assert(
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spawnSync("git", ["checkout", `${commitHash}^1`, "--", "lib/games.js"])
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.status === 0
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);
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// We have to copy each state of the file to its own file because node caches imports
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const beforeName = `game_changes/${commitHash}-before.js`;
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copyFileSync("lib/games.js", beforeName);
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const before = await import(path.join("../", beforeName));
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// Checkout lib/games.js after the commit that changed it
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assert(
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spawnSync("git", ["checkout", `${commitHash}`, "--", "lib/games.js"])
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.status === 0
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);
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const afterName = `game_changes/${commitHash}-after.js`;
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copyFileSync("lib/games.js", afterName);
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const after = await import(path.join("../", afterName));
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// Find game IDs that were removed and added
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let removed = Object.keys(before.games).filter(
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(key) => !(key in after.games)
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);
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let added = Object.keys(after.games).filter(
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(key) => !(key in before.games)
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);
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const changes = [];
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for (const rm of removed) {
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for (const add of added) {
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const beforeGame = before.games[rm];
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const afterGame = after.games[add];
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// Modify game names to ignore case, spaces, and punctuation
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const beforeName = beforeGame.name.toLowerCase().replace(/[^a-z]/g, "");
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const afterName = afterGame.name.toLowerCase().replace(/[^a-z]/g, "");
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if (
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beforeGame.options.protocol === afterGame.options.protocol &&
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(beforeName.includes(afterName) || afterName.includes(beforeName))
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) {
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changes.push([rm, add]);
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removed = removed.filter((r) => r !== rm);
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added = added.filter((a) => a !== add);
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break;
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}
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}
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}
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output.push({
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hash: commitHash,
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changes,
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removed,
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added,
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});
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}
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// Reset the contents of lib/games.js
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spawnSync("git", ["checkout", "--", "lib/games.js"]);
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return output;
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};
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main(
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// Get the root of the repo:
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// dir of bin/find-id-changes.js -> /../
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path.join(path.dirname(fileURLToPath(import.meta.url)), "..")
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).then((o) => console.log(JSON.stringify(o)), console.error);
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