From ee79d7d00589bd06530c8a4768ea6fa716400f8a Mon Sep 17 00:00:00 2001
From: Richard Moore <me@ricmoo.com>
Date: Sat, 11 Nov 2023 17:58:48 -0500
Subject: [PATCH] admin: added diff scripts for build page

---
 src.ts/_admin/generate-diffs.ts | 20 ++++++++++++++++----
 src.ts/_admin/utils/git.ts      |  7 +++++++
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/src.ts/_admin/generate-diffs.ts b/src.ts/_admin/generate-diffs.ts
index 9959f4ee2..71de44066 100644
--- a/src.ts/_admin/generate-diffs.ts
+++ b/src.ts/_admin/generate-diffs.ts
@@ -1,13 +1,25 @@
+import fs from "fs";
+
 import { getVersions } from "./utils/npm.js";
 import { resolve } from "./utils/path.js";
 import { getDiff } from "./utils/git.js";
 
+function escver(v: string): string {
+    return v.replace(/\./, "-");
+}
+
 (async function() {
     let versions = await getVersions("ethers");
     versions = versions.filter((h) => (h.version.match(/^6\.[0-9]+\.[0-9]+$/)));
-    for (let i = 1; i < versions.length; i++) {
-        const tag0 = versions[i - 1].gitHead, tag1 = versions[i].gitHead;
-        const diff = await getDiff(resolve("dist/ethers.js"), tag0, tag1);
-        console.log(diff);
+    fs.writeFileSync(resolve("misc/diffs/versions.txt"), versions.map((h) => h.version).join(","));
+    for (let i = 0; i < versions.length; i++) {
+        for (let j = i + 1; j < versions.length; j++) {
+            const filename = resolve(`misc/diffs/diff-${ escver(versions[i].version) }_${ escver(versions[j].version) }.txt`);
+            if (fs.existsSync(filename)) { continue; }
+            const tag0 = versions[i].gitHead, tag1 = versions[j].gitHead;
+            const diff = await getDiff(resolve("src.ts"), tag0, tag1);
+            console.log({ diff });
+            fs.writeFileSync(filename, diff);
+        }
     }
 })();
diff --git a/src.ts/_admin/utils/git.ts b/src.ts/_admin/utils/git.ts
index d8194f95c..fae54f1cf 100644
--- a/src.ts/_admin/utils/git.ts
+++ b/src.ts/_admin/utils/git.ts
@@ -37,6 +37,7 @@ export async function getModifiedTime(filename: string): Promise<null | number>
 
     return null;
 }
+
 export interface GitLog {
     commit: string;
     author: string;
@@ -89,3 +90,9 @@ export async function getDiff(filename: string, tag0: string, tag1: string): Pro
     if (!result.ok) { throw new Error(`git log error`); }
     return result.stdout.trim();
 }
+
+export async function getTags(): Promise<Array<string>> {
+    const result = await run("git", [ "tag" ]);
+    if (!result.ok) { throw new Error(`git log error`); }
+    return result.stdout.trim().split("\n");
+}