feat: Added changeLog script file

scripts/change-log-helper.js

@@ -0,0 +1,103 @@
+/* eslint-disable no-console */
+const fs = require('fs');
+const readline = require('readline');
+
+class ChangeLogHelper {
+  constructor(versionRegex, dateRegex, cliCoreChangelogFilename, oaiChangelogFilename) {
+    this.versionRegex = versionRegex;
+    this.dateRegex = dateRegex;
+    this.cliCoreChangelogFilename = cliCoreChangelogFilename;
+    this.oaiChangelogFilename = oaiChangelogFilename;
+  }
+
+  async getFirstTwoVersions() {
+    const versions = [];
+    const rl = await this.getReadLiner(this.oaiChangelogFilename);
+    for await (const line of rl) {
+      const version = this.versionRegex.exec(line);
+      if (version) {
+        versions.push(version[0]);
+        if (versions.length === 2) break;
+      }
+    }
+    /*
+     * if (versions.length === 2) {
+     *   console.log(versions);
+     * } else {
+     *   console.log('Invalid versions');
+     * }
+     */
+    return versions;
+  }
+
+  async getLatestChangelogGeneratedDate() {
+    let latestDate;
+    const rl = await this.getReadLiner(this.cliCoreChangelogFilename);
+    for await (const line of rl) {
+      latestDate = this.dateRegex.exec(line);
+      if (latestDate) {
+        latestDate = latestDate[0];
+        break;
+      }
+    }
+
+    /*
+     * if (latestDate) {
+     *   console.log(`Detected latest date: ${latestDate}`);
+     * } else {
+     *   console.log('Did not detect any dates');
+     * }
+     */
+
+    return latestDate;
+  }
+
+  async getChangesAfterGivenDate(date) {
+    let readLines = false;
+    let fileData = '';
+    const rl = await this.getReadLiner(this.oaiChangelogFilename);
+    for await (const line of rl) {
+      const currentDate = this.dateRegex.exec(line);
+      if (currentDate) {
+        if (currentDate[0] > date) {
+          readLines = true;
+        } else {
+          break;
+        }
+      } else if (readLines) {
+        fileData += `${line}\n`;
+      }
+    }
+    return fileData;
+  }
+
+  async appendAndGetChangesToChangelog() {
+    const latestDate = await this.getLatestChangelogGeneratedDate(); // changes.md
+    if (latestDate) {
+      const changeLog = await this.getChangesAfterGivenDate(latestDate); // oai_changes.md
+      if (changeLog) {
+        const data = fs.readFileSync(this.cliCoreChangelogFilename);
+        const fd = fs.openSync(this.cliCoreChangelogFilename, 'w+');
+        const insert = Buffer.from(changeLog);
+        fs.writeSync(fd, insert, 0, insert.length, 0);
+        fs.writeSync(fd, data, 0, data.length, insert.length);
+        fs.close(fd, (err) => {
+          if (err) throw err;
+        });
+        return changeLog;
+      }
+    }
+    return '';
+  }
+
+  async getReadLiner(filename) {
+    const fileStream = fs.createReadStream(filename);
+    const rl = readline.createInterface({
+      input: fileStream,
+    });
+    return rl;
+  }
+}
+module.exports = {
+  ChangeLogHelper,
+};