1  // SPDX-FileCopyrightText: 2025 Mass Labs
 2  //
 3  // SPDX-License-Identifier: MIT
 4  
 5  /**
 6   * This script writes the current git commit and/or tag to a JSON file
 7   * that can be imported in the rest of the codebase.
 8   */
 9  
10  import { ensureDir } from "@std/fs";
11  import * as path from "@std/path";
12  
13  async function getCurrentGitInfo(): Promise<
14    { commit: string; tag: string | null; timestamp: string }
15  > {
16    // Get current commit hash
17    const commitProcess = new Deno.Command("git", {
18      args: ["rev-parse", "HEAD"],
19      stdout: "piped",
20      stderr: "piped",
21    });
22  
23    const commitResult = await commitProcess.output();
24    const commit = new TextDecoder().decode(commitResult.stdout).trim();
25  
26    // Try to get current tag if any
27    const tagProcess = new Deno.Command("git", {
28      args: ["describe", "--tags", "--exact-match", "HEAD"],
29      stdout: "piped",
30      stderr: "piped",
31    });
32  
33    const tagResult = await tagProcess.output();
34    let tag: string | null = null;
35  
36    if (tagResult.code === 0) {
37      tag = new TextDecoder().decode(tagResult.stdout).trim();
38    }
39  
40    // Get commit timestamp
41    const timestampProcess = new Deno.Command("git", {
42      args: ["show", "-s", "--format=%ci", commit],
43      stdout: "piped",
44      stderr: "piped",
45    });
46  
47    const timestampResult = await timestampProcess.output();
48    const gitTimestamp = new TextDecoder().decode(timestampResult.stdout).trim();
49    const timestamp = new Date(gitTimestamp).toISOString();
50  
51    return { commit, tag, timestamp };
52  }
53  
54  async function main() {
55    try {
56      const gitInfo = await getCurrentGitInfo();
57  
58      const releaseInfo = {
59        version: gitInfo.tag ?? gitInfo.commit.slice(0, 8),
60        commit: gitInfo.commit,
61        tag: gitInfo.tag,
62        timestamp: gitInfo.timestamp,
63      };
64  
65      // Ensure the directory exists
66      const outputDir = path.join(Deno.cwd(), "src/");
67      await ensureDir(outputDir);
68  
69      // Write to file
70      const outputPath = path.join(outputDir, "release-info.json");
71      await Deno.writeTextFile(outputPath, JSON.stringify(releaseInfo, null, 2));
72  
73      console.log(`Release info written to ${outputPath}`);
74    } catch (error) {
75      console.error("Failed to write release info:", error);
76      Deno.exit(1);
77    }
78  }
79  
80  if (import.meta.main) {
81    main();
82  }