1#!/usr/bin/env node --redirect-warnings=/dev/null
 2
 3const { execFileSync } = require("child_process");
 4const { GITHUB_ACCESS_TOKEN } = process.env;
 5const PR_REGEX = /pull request #(\d+)/;
 6const FIXES_REGEX = /(fixes|closes) (.+[/#]\d+.*)$/im;
 7
 8main();
 9
10async function main() {
11  // Get the last two preview tags
12  const [newTag, oldTag] = execFileSync(
13    "git",
14    ["tag", "--sort", "-committerdate"],
15    { encoding: "utf8" }
16  )
17    .split("\n")
18    .filter((t) => t.startsWith("v") && t.endsWith('-pre'));
19
20  // Print the previous release
21  console.log(`Changes from ${oldTag} to ${newTag}\n`);
22
23  let hasProtocolChanges = false;
24  try {
25    execFileSync("git", ["diff", oldTag, newTag, "--exit-code", "--", "crates/rpc"]).status != 0;
26  } catch (error) {
27    hasProtocolChanges = true;
28  }
29
30  if (hasProtocolChanges) {
31    console.warn("\033[31;1;4mRPC protocol changes, server should be re-deployed\033[0m\n");
32  } else {
33    console.log("No RPC protocol changes\n");
34  }
35
36  // Get the PRs merged between those two tags.
37  const pullRequestNumbers = execFileSync(
38    "git",
39    [
40      "log",
41      `${oldTag}..${newTag}`,
42      "--oneline",
43      "--grep",
44      "Merge pull request",
45    ],
46    { encoding: "utf8" }
47  )
48    .split("\n")
49    .filter((line) => line.length > 0)
50    .map((line) => line.match(PR_REGEX)[1]);
51
52  // Get the PRs that were cherry-picked between main and the old tag.
53  const existingPullRequestNumbers = new Set(execFileSync(
54    "git",
55    [
56      "log",
57      `main..${oldTag}`,
58      "--oneline",
59      "--grep",
60      "Merge pull request",
61    ],
62    { encoding: "utf8" }
63  )
64    .split("\n")
65    .filter((line) => line.length > 0)
66    .map((line) => line.match(PR_REGEX)[1]));
67    
68  // Filter out those existing PRs from the set of new PRs.
69  const newPullRequestNumbers = pullRequestNumbers.filter(number => !existingPullRequestNumbers.has(number));
70
71  // Fetch the pull requests from the GitHub API.
72  console.log("Merged Pull requests:")
73  for (const pullRequestNumber of newPullRequestNumbers) {
74    const webURL = `https://github.com/zed-industries/zed/pull/${pullRequestNumber}`;
75    const apiURL = `https://api.github.com/repos/zed-industries/zed/pulls/${pullRequestNumber}`;
76
77    const response = await fetch(apiURL, {
78      headers: {
79        Authorization: `token ${GITHUB_ACCESS_TOKEN}`,
80      },
81    });
82
83    // Print the pull request title and URL.
84    const pullRequest = await response.json();
85    console.log("*", pullRequest.title);
86    console.log("  URL:    ", webURL);
87
88    // If the pull request contains a 'closes' line, print the closed issue.
89    const fixesMatch = (pullRequest.body || '').match(FIXES_REGEX);
90    if (fixesMatch) {
91      const fixedIssueURL = fixesMatch[2];
92      console.log("  Issue: ", fixedIssueURL);
93    }
94  }
95}