package com.water.iot.adapter;

import com.water.iot.adapter.impl.CoapAdapter;
import com.water.iot.adapter.impl.HttpAdapter;
import com.water.iot.adapter.impl.ModbusTcpAdapter;
import com.water.iot.model.DeviceCommand;
import com.water.iot.model.DeviceInfo;
import org.springframework.stereotype.Component;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 适配器工厂
 * 根据协议类型自动创建和管理设备适配器实例
 */
@Component
public class AdapterFactory {
    
    private final Map<String, DeviceAdapter> adapters = new HashMap<>();
    private final Map<String, AdapterConfig> adapterConfigs = new HashMap<>();
    
    /**
     * 注册适配器配置
     */
    public void registerAdapter(String protocol, AdapterConfig config) {
        adapterConfigs.put(protocol, config);
    }
    
    /**
     * 获取或创建适配器
     */
    public DeviceAdapter getAdapter(String protocol) {
        if (!adapters.containsKey(protocol)) {
            DeviceAdapter adapter = createAdapter(protocol);
            if (adapter != null) {
                adapters.put(protocol, adapter);
            }
        }
        return adapters.get(protocol);
    }
    
    /**
     * 获取指定协议的适配器（带配置）
     */
    public DeviceAdapter getAdapter(String protocol, String adapterName, Map<String, Object> config) {
        String key = protocol + ":" + adapterName;
        if (!adapters.containsKey(key)) {
            DeviceAdapter adapter = createAdapter(protocol, config);
            if (adapter != null) {
                adapters.put(key, adapter);
            }
        }
        return adapters.get(key);
    }
    
    /**
     * 创建适配器实例
     */
    private DeviceAdapter createAdapter(String protocol) {
        return createAdapter(protocol, null);
    }
    
    /**
     * 创建适配器实例（带配置）
     */
    private DeviceAdapter createAdapter(String protocol, Map<String, Object> config) {
        try {
            switch (protocol.toLowerCase()) {
                case "modbus_tcp":
                    return createModbusTcpAdapter(config);
                case "coap":
                    return createCoapAdapter(config);
                case "http":
                    return createHttpAdapter(config);
                default:
                    throw new IllegalArgumentException("不支持的协议类型: " + protocol);
            }
        } catch (Exception e) {
            System.err.println("创建适配器失败，协议=" + protocol + ", 错误=" + e.getMessage());
            return null;
        }
    }
    
    /**
     * 创建Modbus TCP适配器
     */
    private DeviceAdapter createModbusTcpAdapter(Map<String, Object> config) {
        if (config == null) {
            config = new HashMap<>();
        }
        
        String host = (String) config.getOrDefault("host", "localhost");
        int port = (int) config.getOrDefault("port", 502);
        
        ModbusTcpAdapter adapter = new ModbusTcpAdapter(host, port);
        
        // 连接适配器
        if (adapter.connect()) {
            System.out.println("Modbus TCP适配器创建成功: " + host + ":" + port);
            return adapter;
        } else {
            System.err.println("Modbus TCP适配器连接失败: " + host + ":" + port);
            return null;
        }
    }
    
    /**
     * 创建CoAP适配器
     */
    private DeviceAdapter createCoapAdapter(Map<String, Object> config) {
        if (config == null) {
            config = new HashMap<>();
        }
        
        String host = (String) config.getOrDefault("host", "localhost");
        int port = (int) config.getOrDefault("port", 5683);
        
        CoapAdapter adapter = new CoapAdapter(host, port);
        
        // 连接适配器
        if (adapter.connect()) {
            System.out.println("CoAP适配器创建成功: " + host + ":" + port);
            return adapter;
        } else {
            System.err.println("CoAP适配器连接失败: " + host + ":" + port);
            return null;
        }
    }
    
    /**
     * 创建HTTP适配器
     */
    private DeviceAdapter createHttpAdapter(Map<String, Object> config) {
        if (config == null) {
            config = new HashMap<>();
        }
        
        String baseUrl = (String) config.getOrDefault("base_url", "http://localhost");
        
        HttpAdapter adapter = new HttpAdapter(baseUrl);
        
        // 连接适配器
        if (adapter.connect()) {
            System.out.println("HTTP适配器创建成功: " + baseUrl);
            return adapter;
        } else {
            System.err.println("HTTP适配器连接失败: " + baseUrl);
            return null;
        }
    }
    
    /**
     * 列出所有可用的协议
     */
    public List<String> listAvailableProtocols() {
        return List.of("modbus_tcp", "coap", "http");
    }
    
    /**
     * 获取适配器信息
     */
    public AdapterInfo getAdapterInfo(String protocol) {
        DeviceAdapter adapter = getAdapter(protocol);
        if (adapter != null) {
            return adapter.getAdapterInfo();
        }
        return null;
    }
    
    /**
     * 移除适配器
     */
    public void removeAdapter(String protocol) {
        DeviceAdapter adapter = adapters.remove(protocol);
        if (adapter != null) {
            adapter.disconnect();
        }
    }
    
    /**
     * 移除所有适配器
     */
    public void removeAllAdapters() {
        for (DeviceAdapter adapter : adapters.values()) {
            adapter.disconnect();
        }
        adapters.clear();
    }
    
    /**
     * 根据设备配置自动创建适配器
     */
    public DeviceAdapter getOrCreateAdapter(Map<String, Object> deviceConfig) {
        String deviceSn = (String) deviceConfig.get("device_id");
        String protocol = (String) deviceConfig.get("protocol");
        String adapterName = (String) deviceConfig.get("adapter_name");
        Map<String, Object> adapterConfig = (Map<String, Object>) deviceConfig.get("adapter_config");
        
        System.out.println("为设备 " + deviceSn + " 创建适配器，协议=" + protocol);
        
        return getAdapter(protocol, adapterName, adapterConfig);
    }
    
    /**
     * 处理设备数据
     */
    public void processData(String protocol, byte[] payload) {
        DeviceAdapter adapter = getAdapter(protocol);
        if (adapter != null) {
            adapter.onMessage(payload);
        } else {
            System.err.println("协议 " + protocol + " 对应的适配器不存在");
        }
    }
    
    /**
     * 发送设备指令
     */
    public void sendCommand(String protocol, String deviceSn, DeviceCommand command) {
        DeviceAdapter adapter = getAdapter(protocol);
        if (adapter != null) {
            adapter.sendCommand(deviceSn, command);
        } else {
            System.err.println("协议 " + protocol + " 对应的适配器不存在");
        }
    }
    
    /**
     * 适配器配置类
     */
    public static class AdapterConfig {
        private String name;
        private String description;
        private Map<String, Object> properties;
        
        public AdapterConfig(String name, String description) {
            this.name = name;
            this.description = description;
            this.properties = new HashMap<>();
        }
        
        // Getters and Setters
        public String getName() {
            return name;
        }
        
        public void setName(String name) {
            this.name = name;
        }
        
        public String getDescription() {
            return description;
        }
        
        public void setDescription(String description) {
            this.description = description;
        }
        
        public Map<String, Object> getProperties() {
            return properties;
        }
        
        public void setProperties(Map<String, Object> properties) {
            this.properties = properties;
        }
    }
}