@ably/cli/dist/src/services/history-manager.js

Ably CLI for Pub/Sub, Chat and Spaces

import * as fs from "node:fs";
import * as path from "node:path";
import * as os from "node:os";
export class HistoryManager {
    historyFile;
    maxHistorySize = 1000;
    constructor(historyFile) {
        this.historyFile =
            historyFile ||
                process.env.ABLY_HISTORY_FILE ||
                path.join(os.homedir(), ".ably", "history");
    }
    async loadHistory(rl) {
        try {
            // Ensure directory exists
            const dir = path.dirname(this.historyFile);
            if (!fs.existsSync(dir)) {
                fs.mkdirSync(dir, { recursive: true });
            }
            if (!fs.existsSync(this.historyFile)) {
                if (process.env.ABLY_DEBUG_KEYS === "true") {
                    console.error(`[DEBUG] History file does not exist: ${this.historyFile}`);
                }
                return;
            }
            const history = fs
                .readFileSync(this.historyFile, "utf8")
                .split("\n")
                .filter((line) => line.trim())
                .slice(-this.maxHistorySize);
            // Access internal history
            // Note: This is accessing private property, but it's the only way
            // to populate history in Node.js readline
            const internalRl = rl;
            internalRl.history = history.reverse();
            if (process.env.ABLY_DEBUG_KEYS === "true") {
                console.error(`[DEBUG] Loaded ${history.length} history items from ${this.historyFile}`);
                console.error(`[DEBUG] First few history items:`, history.slice(0, 3));
            }
        }
        catch (error) {
            if (process.env.ABLY_DEBUG_KEYS === "true") {
                console.error(`[DEBUG] Error loading history:`, error);
            }
            // Silently ignore history load errors
            // History is a nice-to-have feature, shouldn't break the shell
        }
    }
    async saveCommand(command) {
        if (!command.trim())
            return;
        try {
            // Ensure directory exists
            const dir = path.dirname(this.historyFile);
            if (!fs.existsSync(dir)) {
                fs.mkdirSync(dir, { recursive: true });
            }
            fs.appendFileSync(this.historyFile, command + "\n");
            // Trim history file if too large
            const lines = fs.readFileSync(this.historyFile, "utf8").split("\n");
            if (lines.length > this.maxHistorySize * 2) {
                const trimmed = lines
                    .filter((line) => line.trim())
                    .slice(-this.maxHistorySize)
                    .join("\n") + "\n";
                fs.writeFileSync(this.historyFile, trimmed);
            }
        }
        catch {
            // Silently ignore history save errors
            // History is a nice-to-have feature, shouldn't break the shell
        }
    }
    getHistoryFile() {
        return this.historyFile;
    }
}