Rename .js to .mjs and update import paths

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

find-window.mjs

@@ -0,0 +1,161 @@
+import { readFileSync, readdirSync, readlinkSync } from 'fs';
+import { execFileSync } from 'child_process';
+
+function read_file(path) {
+	try {
+		return readFileSync(path, 'utf8');
+	} catch {
+		return null;
+	}
+}
+
+function get_exe(pid) {
+	try {
+		return readlinkSync(`/proc/${pid}/exe`);
+	} catch {
+		return null;
+	}
+}
+
+function get_cmdline(pid) {
+	const raw = read_file(`/proc/${pid}/cmdline`);
+	if (!raw) {
+		return null;
+	}
+	return raw.replace(/\0/g, ' ').trim();
+}
+
+function get_ppid(pid) {
+	const status = read_file(`/proc/${pid}/status`);
+	if (!status) {
+		return null;
+	}
+	const match = status.match(/^PPid:\s+(\d+)/m);
+	return match ? parseInt(match[1]) : null;
+}
+
+//const DOCKER_COMM_PATTERN = /^docker-compose$/;
+const CLAUDE_CMDLINE_SIGNATURE = 'claude --dangerously-skip-permissions';
+const DOCKER_COMM_PATTERN = /^docker-compose$/;
+
+function get_comm(pid) {
+	return read_file(`/proc/${pid}/comm`)?.trim() ?? null;
+}
+
+export function list_docker_pids() {
+	const results = [];
+	for (const entry of readdirSync('/proc')) {
+		if (!/^\d+$/.test(entry)) {
+			continue;
+		}
+		const comm = get_comm(entry);
+		if (!comm || !DOCKER_COMM_PATTERN.test(comm)) {
+			continue;
+		}
+		const cmdline = get_cmdline(entry);
+		if (cmdline && cmdline.includes(CLAUDE_CMDLINE_SIGNATURE)) {
+			results.push({ pid: entry, comm, cmdline });
+		}
+	}
+	return results;
+}
+
+export function walk_to_konsole(pid) {
+	let current = String(pid);
+	const visited = new Set();
+	const chain = [];
+	while (current && current !== '0' && !visited.has(current)) {
+		visited.add(current);
+		const exe = get_exe(current);
+		chain.push({ pid: current, exe });
+		if (exe === '/usr/bin/konsole') {
+			return { konsole_pid: current, chain };
+		}
+		current = String(get_ppid(current));
+	}
+	return { konsole_pid: null, chain };
+}
+
+function get_net_client_list() {
+	try {
+		const out = execFileSync('xprop', ['-root', '_NET_CLIENT_LIST'], { encoding: 'utf8' });
+		// Format: _NET_CLIENT_LIST(WINDOW): window id # 0x..., 0x..., ...
+		const match = out.match(/window id # (.+)/);
+		if (!match) {
+			return [];
+		}
+		return match[1].split(',').map(s => parseInt(s.trim(), 16)).filter(Boolean);
+	} catch {
+		return [];
+	}
+}
+
+function get_window_pid(window_id) {
+	try {
+		const hex = '0x' + window_id.toString(16);
+		const out = execFileSync('xprop', ['-id', hex, '_NET_WM_PID'], { encoding: 'utf8' });
+		const match = out.match(/= (\d+)/);
+		return match ? parseInt(match[1]) : null;
+	} catch {
+		return null;
+	}
+}
+
+export function window_id_for_pid(pid) {
+	const target_pid = parseInt(pid);
+	for (const wid of get_net_client_list()) {
+		if (get_window_pid(wid) === target_pid) {
+			return '0x' + wid.toString(16);
+		}
+	}
+	return null;
+}
+
+export function find_claude_window_by_process_tree({ debug = false } = {}) {
+	const docker_pids = list_docker_pids();
+	if (debug) {
+		console.error(`[find-window] docker pids (${docker_pids.length}):`);
+		for (const { pid, comm, cmdline } of docker_pids) {
+			console.error(`  pid=${pid} comm=${comm} cmdline=${cmdline}`);
+		}
+	}
+
+	for (const { pid } of docker_pids) {
+		const { konsole_pid, chain } = walk_to_konsole(pid);
+		if (debug) {
+			const chain_str = chain.map(e => `${e.pid}(${e.exe?.split('/').pop() ?? '?'})`).join(' → ');
+			console.error(`[find-window] pid=${pid} chain: ${chain_str}`);
+		}
+		if (!konsole_pid) {
+			continue;
+		}
+		if (debug) {
+			console.error(`[find-window] found konsole pid=${konsole_pid}, looking up window...`);
+		}
+		const window_id = window_id_for_pid(konsole_pid);
+		if (debug) {
+			console.error(`[find-window] window id: ${window_id ?? 'not found'}`);
+		}
+		if (window_id) {
+			return window_id;
+		}
+	}
+	return null;
+}
+
+export function find_claude_window_by_title(title = 'claude-docker') {
+	try {
+		const result = execFileSync(
+			'xdotool', ['search', '--name', title],
+			{ encoding: 'utf8' }
+		);
+		const ids = result.trim().split('\n').filter(Boolean);
+		return ids[0] ?? null;
+	} catch {
+		return null;
+	}
+}
+
+export function find_claude_window({ debug = false } = {}) {
+	return find_claude_window_by_process_tree({ debug }) ?? find_claude_window_by_title();
+}