import express from 'express';
import db from '../database.js';
import { authenticateToken } from '../middleware/auth.js';
import { BambuPrinterAPI } from '../services/bambuPrinterAPI.js';

const router = express.Router();

/**
 * Add/Update Bambu printer settings
 */
router.post('/bambu/connect', authenticateToken, (req, res) => {
  const { accessToken, serialNumber, printerName, modelName } = req.body;

  if (!accessToken || !serialNumber) {
    return res.status(400).json({ error: 'accessToken and serialNumber are required' });
  }

  // Check if printer already exists for this user
  db.get(
    'SELECT id FROM printer_settings WHERE user_id = ? AND serial_number = ?',
    [req.user.id, serialNumber],
    (err, existing) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }

      if (existing) {
        // Update existing
        db.run(
          'UPDATE printer_settings SET access_token = ?, printer_name = ?, model_name = ? WHERE id = ?',
          [accessToken, printerName || 'Bambu Printer', modelName, existing.id],
          (err) => {
            if (err) {
              return res.status(500).json({ error: err.message });
            }
            res.json({ message: 'Printer settings updated', printerConnected: true });
          }
        );
      } else {
        // Insert new
        db.run(
          'INSERT INTO printer_settings (user_id, printer_type, printer_name, access_token, serial_number, model_name) VALUES (?, ?, ?, ?, ?, ?)',
          [req.user.id, 'bambu', printerName || 'Bambu Printer', accessToken, serialNumber, modelName],
          (err) => {
            if (err) {
              return res.status(500).json({ error: err.message });
            }
            res.json({ message: 'Printer connected successfully', printerConnected: true });
          }
        );
      }
    }
  );
});

/**
 * Get user's connected printers
 */
router.get('/printers', authenticateToken, (req, res) => {
  db.all(
    'SELECT id, printer_type, printer_name, serial_number, model_name FROM printer_settings WHERE user_id = ?',
    [req.user.id],
    (err, printers) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      res.json({ printers });
    }
  );
});

/**
 * Get specific printer details
 */
router.get('/printers/:printerId', authenticateToken, (req, res) => {
  db.get(
    'SELECT * FROM printer_settings WHERE id = ? AND user_id = ?',
    [req.params.printerId, req.user.id],
    (err, printer) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      if (!printer) {
        return res.status(404).json({ error: 'Printer not found' });
      }

      // Don't send access token to client
      const { access_token, ...safeData } = printer;
      res.json(safeData);
    }
  );
});

/**
 * Get Bambu printer status
 */
router.get('/bambu/:printerId/status', authenticateToken, async (req, res) => {
  db.get(
    'SELECT access_token, serial_number FROM printer_settings WHERE id = ? AND user_id = ? AND printer_type = ?',
    [req.params.printerId, req.user.id, 'bambu'],
    async (err, printer) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      if (!printer) {
        return res.status(404).json({ error: 'Bambu printer not found' });
      }

      try {
        const api = new BambuPrinterAPI(printer.access_token, printer.serial_number);
        const status = await api.getPrinterStatus();
        res.json(status);
      } catch (error) {
        res.status(500).json({ error: error.message });
      }
    }
  );
});

/**
 * Get Bambu printer info
 */
router.get('/bambu/:printerId/info', authenticateToken, async (req, res) => {
  db.get(
    'SELECT access_token, serial_number FROM printer_settings WHERE id = ? AND user_id = ? AND printer_type = ?',
    [req.params.printerId, req.user.id, 'bambu'],
    async (err, printer) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      if (!printer) {
        return res.status(404).json({ error: 'Bambu printer not found' });
      }

      try {
        const api = new BambuPrinterAPI(printer.access_token, printer.serial_number);
        const info = await api.getPrinterInfo();
        res.json(info);
      } catch (error) {
        res.status(500).json({ error: error.message });
      }
    }
  );
});

/**
 * Get Bambu print job status
 */
router.get('/bambu/:printerId/job', authenticateToken, async (req, res) => {
  db.get(
    'SELECT access_token, serial_number FROM printer_settings WHERE id = ? AND user_id = ? AND printer_type = ?',
    [req.params.printerId, req.user.id, 'bambu'],
    async (err, printer) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      if (!printer) {
        return res.status(404).json({ error: 'Bambu printer not found' });
      }

      try {
        const api = new BambuPrinterAPI(printer.access_token, printer.serial_number);
        const jobStatus = await api.getPrintJobStatus();
        res.json(jobStatus);
      } catch (error) {
        res.status(500).json({ error: error.message });
      }
    }
  );
});

/**
 * Get Bambu temperature readings
 */
router.get('/bambu/:printerId/temperature', authenticateToken, async (req, res) => {
  db.get(
    'SELECT access_token, serial_number FROM printer_settings WHERE id = ? AND user_id = ? AND printer_type = ?',
    [req.params.printerId, req.user.id, 'bambu'],
    async (err, printer) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      if (!printer) {
        return res.status(404).json({ error: 'Bambu printer not found' });
      }

      try {
        const api = new BambuPrinterAPI(printer.access_token, printer.serial_number);
        const temperature = await api.getTemperature();
        res.json(temperature);
      } catch (error) {
        res.status(500).json({ error: error.message });
      }
    }
  );
});

/**
 * Get Bambu print history
 */
router.get('/bambu/:printerId/history', authenticateToken, async (req, res) => {
  const { limit = 10 } = req.query;
  
  db.get(
    'SELECT access_token, serial_number FROM printer_settings WHERE id = ? AND user_id = ? AND printer_type = ?',
    [req.params.printerId, req.user.id, 'bambu'],
    async (err, printer) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      if (!printer) {
        return res.status(404).json({ error: 'Bambu printer not found' });
      }

      try {
        const api = new BambuPrinterAPI(printer.access_token, printer.serial_number);
        const history = await api.getPrintHistory(parseInt(limit));
        res.json(history);
      } catch (error) {
        res.status(500).json({ error: error.message });
      }
    }
  );
});

/**
 * Control Bambu print (pause, resume, stop)
 */
router.post('/bambu/:printerId/control', authenticateToken, async (req, res) => {
  const { action } = req.body; // 'pause', 'resume', 'stop'

  if (!['pause', 'resume', 'stop'].includes(action)) {
    return res.status(400).json({ error: 'Invalid action. Use: pause, resume, or stop' });
  }

  db.get(
    'SELECT access_token, serial_number FROM printer_settings WHERE id = ? AND user_id = ? AND printer_type = ?',
    [req.params.printerId, req.user.id, 'bambu'],
    async (err, printer) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      if (!printer) {
        return res.status(404).json({ error: 'Bambu printer not found' });
      }

      try {
        const api = new BambuPrinterAPI(printer.access_token, printer.serial_number);
        const result = await api.controlPrint(action);
        res.json(result);
      } catch (error) {
        res.status(500).json({ error: error.message });
      }
    }
  );
});

/**
 * Disconnect/remove printer
 */
router.delete('/printers/:printerId', authenticateToken, (req, res) => {
  db.run(
    'DELETE FROM printer_settings WHERE id = ? AND user_id = ?',
    [req.params.printerId, req.user.id],
    (err) => {
      if (err) {
        return res.status(500).json({ error: err.message });
      }
      res.json({ message: 'Printer disconnected' });
    }
  );
});

export default router;