import express from 'express';
import bodyParser from 'body-parser';
import path from 'path';
import { fileURLToPath } from 'url'; // <-- REQUIRED FOR ESM
import { ServerManager } from './ServerManager.js';
// NEW imports required for log streaming
import { logsDir } from './paths.js';
import { existsSync, readFileSync } from 'node:fs';
import fs from 'node:fs';
// Recreate __dirname for ESM
const __filename = fileURLToPath(import.meta.url); // <-- REQUIRED
const __dirname = path.dirname(__filename); // <-- REQUIRED
const DEFAULT_APP_ID = Number(process.env.WINDROSE_APP_ID || '4129620');
export function createApi() {
    const app = express();
    const manager = new ServerManager(DEFAULT_APP_ID);
    // ---------------------------------------------------------
    // STATIC FILES (SERVE UI)
    // ---------------------------------------------------------
    app.use(express.static(path.join(__dirname, "../public")));
    // Serve index.html at root
    app.get("/", (_req, res) => {
        res.sendFile(path.join(__dirname, "../public/index.html"));
    });
    // ---------------------------------------------------------
    // API ROUTES
    // ---------------------------------------------------------
    app.use(bodyParser.json());
    app.get('/servers', (_req, res) => {
        res.json(manager.list());
    });
    app.get('/servers/:id', (req, res) => {
        const server = manager.get(req.params.id);
        if (!server)
            return res.status(404).json({ error: 'Not found' });
        res.json(server);
    });
    app.post('/servers', async (req, res) => {
        try {
            const { id, name } = req.body;
            if (!id)
                return res.status(400).json({ error: 'id required' });
            const server = await manager.create(id, name);
            res.status(201).json(server);
        }
        catch (err) {
            res.status(500).json({ error: err.message });
        }
    });
    app.post('/servers/:id/start', async (req, res) => {
        try {
            const server = await manager.start(req.params.id);
            res.json(server);
        }
        catch (err) {
            res.status(500).json({ error: err.message });
        }
    });
    app.post('/servers/:id/stop', async (req, res) => {
        try {
            const server = await manager.stop(req.params.id);
            res.json(server);
        }
        catch (err) {
            res.status(500).json({ error: err.message });
        }
    });
    app.post('/servers/:id/restart', async (req, res) => {
        try {
            const server = await manager.restart(req.params.id);
            res.json(server);
        }
        catch (err) {
            res.status(500).json({ error: err.message });
        }
    });
    // ---------------------------------------------------------
    // CONFIG READ
    // ---------------------------------------------------------
    app.get('/servers/:id/config', (req, res) => {
        try {
            const cfg = manager.readConfig(req.params.id);
            res.json(cfg);
        }
        catch (err) {
            res.status(404).json({ error: err.message });
        }
    });
    // ---------------------------------------------------------
    // CONFIG UPDATE
    // ---------------------------------------------------------
    app.put('/servers/:id/config', async (req, res) => {
        try {
            const { serverCfg, worldCfg } = req.body;
            const server = await manager.updateConfig(req.params.id, serverCfg, worldCfg);
            res.json(server);
        }
        catch (err) {
            res.status(500).json({ error: err.message });
        }
    });
    // ---------------------------------------------------------
    // AUTO-RESTART TOGGLE
    // ---------------------------------------------------------
    app.post('/servers/:id/auto-restart', async (req, res) => {
        try {
            const { enabled } = req.body;
            if (typeof enabled !== 'boolean') {
                return res.status(400).json({ error: "Field 'enabled' must be boolean" });
            }
            const updated = await manager.setAutoRestart(req.params.id, enabled);
            res.json(updated);
        }
        catch (err) {
            res.status(500).json({ error: err.message });
        }
    });
    // ---------------------------------------------------------
    // CRASH EVENT LOG RETRIEVAL
    // ---------------------------------------------------------
    app.get('/servers/:id/events', async (req, res) => {
        try {
            const events = await manager.getEvents(req.params.id);
            res.json(events);
        }
        catch (err) {
            res.status(500).json({ error: err.message });
        }
    });
    // ---------------------------------------------------------
    // LIVE LOG STREAMING (SSE)
    // ---------------------------------------------------------
    app.get('/servers/:id/logs/stream', (req, res) => {
        const id = req.params.id;
        const type = req.query.type === 'stderr' ? 'stderr' : 'stdout';
        const filePath = `${logsDir(id)}/${type}.log`;
        res.setHeader('Content-Type', 'text/event-stream');
        res.setHeader('Cache-Control', 'no-cache');
        res.setHeader('Connection', 'keep-alive');
        // Send existing log content
        if (existsSync(filePath)) {
            const existing = readFileSync(filePath, 'utf-8')
                .split('\n')
                .filter(Boolean);
            for (const line of existing) {
                res.write(`data: ${line}\n\n`);
            }
        }
        // Watch for new log lines
        const watcher = fs.watch(filePath, () => {
            const content = readFileSync(filePath, 'utf-8')
                .trim()
                .split('\n')
                .slice(-1)[0];
            res.write(`data: ${content}\n\n`);
        });
        req.on('close', () => watcher.close());
    });
    app.delete('/servers/:id', async (req, res) => {
        try {
            await manager.delete(req.params.id);
            res.status(204).end();
        }
        catch (err) {
            res.status(500).json({ error: err.message });
        }
    });
    return app;
}