package com.mes.interaction.impl;

import com.mes.device.entity.DeviceConfig;
import com.mes.interaction.BaseDeviceLogicHandler;
import com.mes.device.service.DevicePlcOperationService;
import com.mes.device.vo.DevicePlcVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

/**
 * 上大车设备逻辑处理器
 * 
 * @author mes
 * @since 2025-01-XX
 */
@Slf4j
@Component
public class LoadVehicleLogicHandler extends BaseDeviceLogicHandler {

    public LoadVehicleLogicHandler(DevicePlcOperationService devicePlcOperationService) {
        super(devicePlcOperationService);
    }

    @Override
    public String getDeviceType() {
        return DeviceConfig.DeviceType.LOAD_VEHICLE;
    }

    @Override
    protected DevicePlcVO.OperationResult doExecute(
            DeviceConfig deviceConfig,
            String operation,
            Map<String, Object> params,
            Map<String, Object> logicParams) {

        log.info("执行上大车设备操作: deviceId={}, operation={}", deviceConfig.getId(), operation);

        switch (operation) {
            case "feedGlass":
                return handleFeedGlass(deviceConfig, params, logicParams);
            case "triggerRequest":
                return handleTriggerRequest(deviceConfig, params, logicParams);
            case "triggerReport":
                return handleTriggerReport(deviceConfig, params, logicParams);
            case "reset":
                return handleReset(deviceConfig, params, logicParams);
            default:
                log.warn("不支持的操作类型: {}", operation);
                return DevicePlcVO.OperationResult.builder()
                        .success(false)
                        .message("不支持的操作: " + operation)
                        .build();
        }
    }

    /**
     * 处理玻璃上料操作
     */
    private DevicePlcVO.OperationResult handleFeedGlass(
            DeviceConfig deviceConfig,
            Map<String, Object> params,
            Map<String, Object> logicParams) {

        // 从逻辑参数中获取配置（从 extraParams.deviceLogic 读取）
        Integer vehicleCapacity = getLogicParam(logicParams, "vehicleCapacity", 6000);
        Integer glassIntervalMs = getLogicParam(logicParams, "glassIntervalMs", 1000);
        Boolean autoFeed = getLogicParam(logicParams, "autoFeed", true);
        Integer maxRetryCount = getLogicParam(logicParams, "maxRetryCount", 5);

        // 从运行时参数中获取数据（从接口调用时传入）
        List<GlassInfo> glassInfos = extractGlassInfos(params);
        if (glassInfos.isEmpty()) {
            return DevicePlcVO.OperationResult.builder()
                    .success(false)
                    .message("未提供有效的玻璃信息")
                    .build();
        }

        String positionCode = (String) params.get("positionCode");
        Integer positionValue = (Integer) params.get("positionValue");
        Boolean triggerRequest = (Boolean) params.getOrDefault("triggerRequest", autoFeed);

        List<GlassInfo> plannedGlasses = planGlassLoading(glassInfos, vehicleCapacity,
                getLogicParam(logicParams, "defaultGlassLength", 2000));
        if (plannedGlasses.isEmpty()) {
            return DevicePlcVO.OperationResult.builder()
                    .success(false)
                    .message("当前玻璃尺寸超出车辆容量，无法装载")
                    .build();
        }

        // 构建写入数据
        Map<String, Object> payload = new HashMap<>();
        
        // 写入玻璃ID
        int plcSlots = Math.min(plannedGlasses.size(), 6);
        for (int i = 0; i < plcSlots; i++) {
            String fieldName = "plcGlassId" + (i + 1);
            payload.put(fieldName, plannedGlasses.get(i).getGlassId());
        }
        payload.put("plcGlassCount", plcSlots);

        // 写入位置信息
        if (positionValue != null) {
            payload.put("inPosition", positionValue);
        } else if (positionCode != null) {
            // 从位置映射中获取位置值
            @SuppressWarnings("unchecked")
            Map<String, Integer> positionMapping = getLogicParam(logicParams, "positionMapping", new HashMap<>());
            Integer mappedValue = positionMapping.get(positionCode);
            if (mappedValue != null) {
                payload.put("inPosition", mappedValue);
            }
        }

        // 自动触发请求字
        if (triggerRequest != null && triggerRequest) {
            payload.put("plcRequest", 1);
        }

        String operationName = "上大车-玻璃上料";
        if (positionCode != null) {
            operationName += "(" + positionCode + ")";
        }

        log.info("上大车玻璃上料: deviceId={}, glassCount={}, position={}, plannedGlassIds={}",
                deviceConfig.getId(), plcSlots, positionCode, plannedGlasses);

        if (glassIntervalMs != null && glassIntervalMs > 0) {
            try {
                Thread.sleep(glassIntervalMs);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }

        return devicePlcOperationService.writeFields(deviceConfig.getId(), payload, operationName);
    }

    /**
     * 处理触发请求操作
     */
    private DevicePlcVO.OperationResult handleTriggerRequest(
            DeviceConfig deviceConfig,
            Map<String, Object> params,
            Map<String, Object> logicParams) {

        Map<String, Object> payload = new HashMap<>();
        payload.put("plcRequest", 1);
        
        log.info("上大车触发请求: deviceId={}", deviceConfig.getId());
        return devicePlcOperationService.writeFields(
                deviceConfig.getId(),
                payload,
                "上大车-触发请求"
        );
    }

    /**
     * 处理触发汇报操作
     */
    private DevicePlcVO.OperationResult handleTriggerReport(
            DeviceConfig deviceConfig,
            Map<String, Object> params,
            Map<String, Object> logicParams) {

        Map<String, Object> payload = new HashMap<>();
        payload.put("plcReport", 1);
        
        log.info("上大车触发汇报: deviceId={}", deviceConfig.getId());
        return devicePlcOperationService.writeFields(
                deviceConfig.getId(),
                payload,
                "上大车-触发汇报"
        );
    }

    /**
     * 处理重置操作
     */
    private DevicePlcVO.OperationResult handleReset(
            DeviceConfig deviceConfig,
            Map<String, Object> params,
            Map<String, Object> logicParams) {

        Map<String, Object> payload = new HashMap<>();
        payload.put("plcRequest", 0);
        payload.put("plcReport", 0);
        
        log.info("上大车重置: deviceId={}", deviceConfig.getId());
        return devicePlcOperationService.writeFields(
                deviceConfig.getId(),
                payload,
                "上大车-重置"
        );
    }

    @Override
    public String validateLogicParams(DeviceConfig deviceConfig) {
        Map<String, Object> logicParams = parseLogicParams(deviceConfig);
        
        // 验证必填参数
        Integer vehicleCapacity = getLogicParam(logicParams, "vehicleCapacity", null);
        if (vehicleCapacity == null || vehicleCapacity <= 0) {
            return "车辆容量(vehicleCapacity)必须大于0";
        }

        Integer glassIntervalMs = getLogicParam(logicParams, "glassIntervalMs", null);
        if (glassIntervalMs != null && glassIntervalMs < 0) {
            return "玻璃间隔时间(glassIntervalMs)不能为负数";
        }

        return null; // 验证通过
    }

    @Override
    public String getDefaultLogicParams() {
        Map<String, Object> defaultParams = new HashMap<>();
        defaultParams.put("vehicleCapacity", 6000);
        defaultParams.put("glassIntervalMs", 1000);
        defaultParams.put("autoFeed", true);
        defaultParams.put("maxRetryCount", 5);
        defaultParams.put("defaultGlassLength", 2000);
        
        Map<String, Integer> positionMapping = new HashMap<>();
        positionMapping.put("POS1", 1);
        positionMapping.put("POS2", 2);
        defaultParams.put("positionMapping", positionMapping);
        
        try {
            return objectMapper.writeValueAsString(defaultParams);
        } catch (Exception e) {
            log.error("生成默认逻辑参数失败", e);
            return "{}";
        }
    }

    @SuppressWarnings("unchecked")
    private List<GlassInfo> extractGlassInfos(Map<String, Object> params) {
        List<GlassInfo> result = new ArrayList<>();
        Object rawGlassInfos = params.get("glassInfos");
        if (rawGlassInfos instanceof List) {
            List<?> list = (List<?>) rawGlassInfos;
            for (Object item : list) {
                GlassInfo info = convertToGlassInfo(item);
                if (info != null) {
                    result.add(info);
                }
            }
        }

        if (result.isEmpty()) {
            List<String> glassIds = (List<String>) params.get("glassIds");
            if (glassIds != null) {
                for (String glassId : glassIds) {
                    result.add(new GlassInfo(glassId, null));
                }
            }
        }
        return result;
    }

    private GlassInfo convertToGlassInfo(Object source) {
        if (source instanceof GlassInfo) {
            return (GlassInfo) source;
        }
        if (source instanceof Map) {
            Map<?, ?> map = (Map<?, ?>) source;
            Object id = map.get("glassId");
            if (id == null) {
                id = map.get("id");
            }
            if (id == null) {
                return null;
            }
            Integer length = parseLength(map.get("length"));
            if (length == null) {
                length = parseLength(map.get("size"));
            }
            return new GlassInfo(String.valueOf(id), length);
        }
        if (source instanceof String) {
            return new GlassInfo((String) source, null);
        }
        return null;
    }

    private Integer parseLength(Object value) {
        if (value instanceof Number) {
            return ((Number) value).intValue();
        }
        if (value instanceof String) {
            try {
                return Integer.parseInt((String) value);
            } catch (NumberFormatException ignored) {
            }
        }
        return null;
    }

    private List<GlassInfo> planGlassLoading(List<GlassInfo> source,
                                             int vehicleCapacity,
                                             Integer defaultGlassLength) {
        List<GlassInfo> planned = new ArrayList<>();
        int usedLength = 0;
        int capacity = Math.max(vehicleCapacity, 1);
        int fallbackLength = defaultGlassLength != null && defaultGlassLength > 0 ? defaultGlassLength : 2000;

        for (GlassInfo info : source) {
            int length = info.getLength() != null && info.getLength() > 0 ? info.getLength() : fallbackLength;
            if (planned.isEmpty()) {
                planned.add(info.withLength(length));
                usedLength = length;
                continue;
            }
            if (usedLength + length <= capacity) {
                planned.add(info.withLength(length));
                usedLength += length;
            } else {
                break;
            }
        }
        return planned;
    }

    private static class GlassInfo {
        private final String glassId;
        private final Integer length;

        GlassInfo(String glassId, Integer length) {
            this.glassId = glassId;
            this.length = length;
        }

        public String getGlassId() {
            return glassId;
        }

        public Integer getLength() {
            return length;
        }

        public GlassInfo withLength(Integer newLength) {
            return new GlassInfo(this.glassId, newLength);
        }

        @Override
        public String toString() {
            return glassId;
        }

        @Override
        public int hashCode() {
            return Objects.hash(glassId, length);
        }

        @Override
        public boolean equals(Object obj) {
            if (this == obj) return true;
            if (obj == null || getClass() != obj.getClass()) return false;
            GlassInfo other = (GlassInfo) obj;
            return Objects.equals(glassId, other.glassId) && Objects.equals(length, other.length);
        }
    }
}