import 'package:flutter/material.dart';
import 'package:get/get.dart';
import '../../../widgets/history_grafik_card.dart';
import '../controllers/device_detail_controller.dart';

class DeviceDetailView extends GetView<DeviceDetailController> {
  const DeviceDetailView({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.grey[50],
      appBar: AppBar(
        backgroundColor: Colors.white,
        elevation: 0,
        leading: IconButton(
          icon: const Icon(Icons.arrow_back, color: Colors.black),
          onPressed: () => Get.back(),
        ),
        title: const Text(
          'Detail Alat',
          style: TextStyle(
            color: Colors.black,
            fontSize: 18,
            fontWeight: FontWeight.w600,
          ),
        ),
        actions: [
          IconButton(
            icon: const Icon(Icons.refresh, color: Colors.black),
            onPressed: controller.refreshData,
          ),
        ],
      ),
      body: Obx(() {
        if (controller.isLoading.value) {
          return const Center(
            child: CircularProgressIndicator(color: Color(0xFF2196F3)),
          );
        }

        return RefreshIndicator(
          onRefresh: controller.refreshData,
          color: const Color(0xFF2196F3),
          child: SingleChildScrollView(
            physics: const AlwaysScrollableScrollPhysics(),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                _buildSection(
                  title: 'Monitoring Infus',
                  child: _buildMonitoringCard(),
                ),
                const SizedBox(height: 20),
                _buildSection(
                  title: 'Kontrol Alat',
                  child: _buildControlCard(),
                ),
                const SizedBox(height: 12),
                // Buzzer card — hanya tampil kalau buzzer aktif
                Obx(() {
                  if (!controller.isBuzzerActive.value) {
                    return const SizedBox.shrink();
                  }
                  return Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 20),
                    child: _buildBuzzerCard(),
                  );
                }),
                const SizedBox(height: 20),
                _buildSection(
                  title: 'History Data',
                  onSeeAll: controller.navigateToHistory,
                  child: Obx(() {
                    if (controller.chartData.isEmpty) {
                      return _buildEmptyChart();
                    }
                    return HistoryGrafikCard(
                      dataPoints: controller.chartData.value,
                    );
                  }),
                ),
                const SizedBox(height: 20),
              ],
            ),
          ),
        );
      }),
    );
  }

  Widget _buildSection({
    required String title,
    required Widget child,
    VoidCallback? onSeeAll,
  }) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Padding(
          padding: const EdgeInsets.fromLTRB(20, 16, 20, 12),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Text(
                title,
                style: const TextStyle(
                  fontSize: 16,
                  fontWeight: FontWeight.bold,
                  color: Colors.black87,
                ),
              ), 
            ],
          ),
        ),
        Padding(
          padding: const EdgeInsets.symmetric(horizontal: 20),
          child: child,
        ),
      ],
    );
  }

  Widget _buildMonitoringCard() {
    return Obx(
      () => Container(
        padding: const EdgeInsets.all(16),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(16),
          border: Border.all(color: Colors.grey[200]!),
          boxShadow: [
            BoxShadow(
              color: Colors.grey.withOpacity(0.08),
              blurRadius: 12,
              offset: const Offset(0, 2),
            ),
          ],
        ),
        child: Row(
          children: [
            Stack(
              children: [
                Container(
                  padding: const EdgeInsets.all(14),
                  decoration: BoxDecoration(
                    color: const Color(0xFFE3F2FD),
                    borderRadius: BorderRadius.circular(14),
                  ),
                  child: const Icon(
                    Icons.water_drop_outlined,
                    size: 32,
                    color: Color(0xFF2196F3),
                  ),
                ),
                Positioned(
                  right: 0,
                  top: 0,
                  child: Container(
                    width: 12,
                    height: 12,
                    decoration: BoxDecoration(
                      color: controller.deviceStatus.value == 'connected'
                          ? const Color(0xFF4CAF50)
                          : Colors.red,
                      shape: BoxShape.circle,
                      border: Border.all(color: Colors.white, width: 2),
                    ),
                  ),
                ),
              ],
            ),
            const SizedBox(width: 16),
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Row(
                    crossAxisAlignment: CrossAxisAlignment.end,
                    children: [
                      Text(
                        controller.dropsPerMinute.value,
                        style: const TextStyle(
                          fontSize: 22,
                          fontWeight: FontWeight.bold,
                          color: Color(0xFF2196F3),
                          height: 1,
                        ),
                      ),
                      const SizedBox(width: 6),
                      const Padding(
                        padding: EdgeInsets.only(bottom: 2),
                        child: Text(
                          'tetes per menit',
                          style: TextStyle(
                            fontSize: 12,
                            color: Colors.black54,
                            fontWeight: FontWeight.w500,
                          ),
                        ),
                      ),
                    ],
                  ),
                  const SizedBox(height: 6),
                  Text(
                    'Last update: ${controller.getLastUpdateText()}',
                    style: TextStyle(fontSize: 11, color: Colors.grey[600]),
                  ),
                  const SizedBox(height: 12),
                  if (controller.patientName.value.isNotEmpty)
                    RichText(
                      text: TextSpan(
                        style: TextStyle(fontSize: 12, color: Colors.grey[700]),
                        children: [
                          const TextSpan(
                            text: 'Nama Pasien: ',
                            style: TextStyle(fontWeight: FontWeight.w500),
                          ),
                          TextSpan(
                            text: controller.patientName.value,
                            style: const TextStyle(
                              fontWeight: FontWeight.w600,
                              color: Colors.black87,
                            ),
                          ),
                        ],
                      ),
                    ),
                  const SizedBox(height: 8),
                  Wrap(
                    spacing: 8,
                    runSpacing: 6,
                    children: [
                      if (controller.deviceId != null)
                        _buildBadge(
                          controller.deviceId!,
                          const Color(0xFFE3F2FD),
                          const Color(0xFF2196F3),
                        ),
                      if (controller.roomName.value.isNotEmpty)
                        _buildBadge(
                          controller.roomName.value,
                          Colors.grey[100]!,
                          Colors.grey[700]!,
                        ),
                      _buildBadge(
                        controller.deviceStatus.value == 'connected'
                            ? 'Online'
                            : 'Offline',
                        controller.deviceStatus.value == 'connected'
                            ? const Color(0xFFE8F5E9)
                            : Colors.red[50]!,
                        controller.deviceStatus.value == 'connected'
                            ? const Color(0xFF2E7D32)
                            : Colors.red[700]!,
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildControlCard() {
    return Obx(
      () => Container(
        padding: const EdgeInsets.all(16),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(16),
          border: Border.all(color: Colors.grey[200]!),
          boxShadow: [
            BoxShadow(
              color: Colors.grey.withOpacity(0.08),
              blurRadius: 12,
              offset: const Offset(0, 2),
            ),
          ],
        ),
        child: Row(
          children: [
            Container(
              padding: const EdgeInsets.all(12),
              decoration: BoxDecoration(
                color: const Color(0xFFE3F2FD),
                borderRadius: BorderRadius.circular(12),
              ),
              child: const Icon(
                Icons.settings_input_component,
                size: 28,
                color: Color(0xFF2196F3),
              ),
            ),
            const SizedBox(width: 16),
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  const Text(
                    'Kontrol Servo',
                    style: TextStyle(
                      fontSize: 15,
                      fontWeight: FontWeight.w600,
                      color: Colors.black87,
                    ),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    controller.isServoActive.value
                        ? 'Infus sedang mengalir'
                        : 'Infus ditutup',
                    style: TextStyle(fontSize: 12, color: Colors.grey[600]),
                  ),
                ],
              ),
            ),
            Switch(
              value: controller.isServoActive.value,
              onChanged: controller.deviceStatus.value == 'connected'
                  ? controller.toggleServo
                  : null,
              activeColor: const Color(0xFF2196F3),
              activeTrackColor: const Color(0xFFBBDEFB),
            ),
          ],
        ),
      ),
    );
  }

  /// Card buzzer — muncul saat buzzer_active == true
  Widget _buildBuzzerCard() {
    return Container(
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.red[50],
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: Colors.red[200]!),
        boxShadow: [
          BoxShadow(
            color: Colors.red.withOpacity(0.08),
            blurRadius: 12,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Row(
        children: [
          // Icon dengan animasi pulse
          Container(
            padding: const EdgeInsets.all(12),
            decoration: BoxDecoration(
              color: Colors.red[100],
              borderRadius: BorderRadius.circular(12),
            ),
            child: Icon(
              Icons.notifications_active_rounded,
              size: 28,
              color: Colors.red[700],
            ),
          ),
          const SizedBox(width: 16),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  'Buzzer Aktif',
                  style: TextStyle(
                    fontSize: 15,
                    fontWeight: FontWeight.w700,
                    color: Colors.red[800],
                  ),
                ),
                const SizedBox(height: 4),
                Text(
                  'Tetesan infus berhenti. Harap periksa pasien.',
                  style: TextStyle(
                    fontSize: 12,
                    color: Colors.red[600],
                    height: 1.4,
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(width: 12),
          // Tombol matikan buzzer
          ElevatedButton(
            onPressed: controller.turnOffBuzzer,
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.red[700],
              foregroundColor: Colors.white,
              padding: const EdgeInsets.symmetric(
                horizontal: 14,
                vertical: 10,
              ),
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(10),
              ),
              elevation: 0,
            ),
            child: const Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                Icon(Icons.volume_off_rounded, size: 18),
                SizedBox(height: 3),
                Text(
                  'Matikan',
                  style: TextStyle(
                    fontSize: 11,
                    fontWeight: FontWeight.w600,
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildEmptyChart() {
    return Container(
      padding: const EdgeInsets.all(32),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: Colors.grey[200]!),
      ),
      child: Center(
        child: Column(
          children: [
            Icon(Icons.show_chart, size: 48, color: Colors.grey[400]),
            const SizedBox(height: 12),
            Text(
              'Belum ada data history',
              style: TextStyle(fontSize: 14, color: Colors.grey[600]),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildBadge(String text, Color bgColor, Color textColor) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 5),
      decoration: BoxDecoration(
        color: bgColor,
        borderRadius: BorderRadius.circular(6),
      ),
      child: Text(
        text,
        style: TextStyle(
          fontSize: 11,
          fontWeight: FontWeight.w600,
          color: textColor,
        ),
      ),
    );
  }
}