feat: update changelog file

index.js

@@ -8,6 +8,7 @@ const { promisify } = require('node:util');
 const exec = promisify(require('node:child_process').exec);
 const AggregateError = require('aggregate-error');
 
+const { updateChangelog } = require('./lib/changelog');
 const { verifyToken, uploadMod } = require('./lib/mod-portal.js');
 const { isInfoValid, readInfoFile, updateInfo } = require('./lib/mod-info.js');
 
@@ -36,6 +37,7 @@ async function prepare(config, context) {
 
     try {
         await updateInfo(config, context);
+        await updateChangelog(config, context);
     } catch (error) {
         errors.push(error);
     }

lib/changelog.js

@@ -0,0 +1,61 @@
+const { readFile, writeFile, access } = require('node:fs/promises');
+const { join } = require('node:path');
+
+const { getMiscError } = require('./get-error');
+
+
+function getChangelogPath(config, context) {
+    return join(context.cwd, "./changelog.txt");
+}
+
+async function readChangelogFile(config, context) {
+    try {
+        return (await readFile(getChangelogPath(config, context), "utf-8")).toString();
+    } catch (error) {
+        throw getMiscError(error);
+    }
+}
+
+async function writeChangelogFile(config, context, changelog) {
+    try {
+        await writeFile(getChangelogPath(config, context), changelog);
+    } catch (error) {
+        throw getMiscError(error);
+    }
+}
+
+async function updateChangelog(config, context) {
+    const { logger, nextRelease: { notes } } = context;
+
+    if (notes) {
+        var changelogContent = notes.split("\n");
+
+        try {
+            await access(getChangelogPath(config, context));
+            logger.log("appending release notes to changelog.txt");
+
+            try {
+                changelogContent = [...changelogContent, ...(await readChangelogFile(config, context)).split("\n")];
+            } catch (error) {
+                throw getMiscError(error);
+            }
+        } catch {
+            logger.log("creating new changelog.txt");
+        }
+
+        changelogContent = changelogContent.filter(a => a.trim() != '');
+
+        try {
+            await writeChangelogFile(config, context, changelogContent.join("\n"));
+        } catch (error) {
+            throw getMiscError(error);
+        }
+    }
+}
+
+module.exports = {
+    getChangelogPath,
+    readChangelogFile,
+    writeChangelogFile,
+    updateChangelog
+ };