// common/scanMixin.js
// 多厂商PDA扫码器兼容方案 - 策略模式 + 配置表驱动
import {
	BUILTIN_SCANNER_CONFIGS,
	getScanConfig,
	hasShownNoConfigHint,
	isPdaDevice as detectPdaDevice,
	isPhoneScanConfig,
	markNoConfigHintShown,
	normalizeConfig,
	PHONE_SCAN_CONFIG,
} from '@/common/scanConfig.js';

export default {
  data() {
    return {
      scanReceivers: [],
      isPageActive: false,
      registeredBrands: [],
      remoteScannerConfigs: [],
      usePhoneScanFallback: false,
      _scanCallback: null,
    }
  },
  
  methods: {
    getScannerConfigs() {
      return BUILTIN_SCANNER_CONFIGS;
    },

    getPhoneScanConfig() {
      return { ...PHONE_SCAN_CONFIG };
    },

    isPdaDevice() {
      return detectPdaDevice();
    },

    shouldUsePhoneScan() {
      const builtinConfigs = this.getScannerConfigs();
      const activeConfig = getScanConfig(builtinConfigs);
      if (activeConfig && isPhoneScanConfig(activeConfig)) {
        return true;
      }
      if (!activeConfig && !this.isPdaDevice()) {
        return true;
      }
      return false;
    },

    getAllScannerConfigs() {
      const builtinConfigs = this.getScannerConfigs();
      if (!this.remoteScannerConfigs.length) {
        return builtinConfigs;
      }

      const configMap = new Map();
      builtinConfigs.forEach((item) => configMap.set(item.brand, item));
      this.remoteScannerConfigs.forEach((item) => configMap.set(item.brand, item));
      if (!configMap.has(PHONE_SCAN_CONFIG.brand)) {
        configMap.set(PHONE_SCAN_CONFIG.brand, { ...PHONE_SCAN_CONFIG });
      }
      return Array.from(configMap.values());
    },

    getActiveScanConfig() {
      return getScanConfig(this.getScannerConfigs());
    },

    getDefaultScanConfig() {
      const configs = this.getAllScannerConfigs().filter((item) => !isPhoneScanConfig(item));
      return configs.length ? configs[0] : null;
    },

    openPhoneScan(options = {}) {
      const callback = options.callback || this._scanCallback;
      // #ifdef APP-PLUS || MP-WEIXIN
      uni.scanCode({
        scanType: options.scanType || ['qrCode', 'barCode'],
        success: (res) => {
          this.handleScanResult(res.result, callback);
        },
        fail: (err) => {
          console.error('手机扫码失败：', err);
          if (options.fail) {
            options.fail(err);
            return;
          }
          uni.showToast({
            title: '扫码失败',
            icon: 'none',
          });
        },
      });
      return;
      // #endif

      // #ifdef H5
      uni.showToast({
        title: 'H5环境不支持扫码功能',
        icon: 'none',
      });
      // #endif
    },

    triggerScan() {
      if (this.usePhoneScanFallback) {
        this.openPhoneScan();
      }
    },

    registerScanBroadcast(scanCallback) {
      this._scanCallback = scanCallback;

      // #ifndef APP-PLUS
      this.usePhoneScanFallback = true;
      return true;
      // #endif

      // #ifdef APP-PLUS
      if (this.shouldUsePhoneScan()) {
        this.usePhoneScanFallback = true;
        console.log('使用手机扫码模式');
        return true;
      }

      this.usePhoneScanFallback = false;
      const activeConfig = this.getActiveScanConfig();

      if (activeConfig && !isPhoneScanConfig(activeConfig)) {
        return this.registerScanBroadcastByConfig(activeConfig, scanCallback);
      }

      if (!hasShownNoConfigHint()) {
        markNoConfigHintShown();
        uni.showToast({
          title: '请先在「我的-扫描设置」配置扫码枪',
          icon: 'none',
          duration: 2500,
        });
      }

      const defaultConfig = this.getDefaultScanConfig();
      if (!defaultConfig) {
        console.error('未找到默认可用的扫码枪配置');
        return false;
      }

      return this.registerScanBroadcastByConfig(defaultConfig, scanCallback);
      // #endif
    },

    registerScanBroadcastByBrand(brand, scanCallback) {
      // #ifdef APP-PLUS
      const configs = this.getAllScannerConfigs();
      const config = configs.find(c => c.brand === brand);

      if (!config) {
        console.error(`未找到厂商配置: ${brand}`);
        return false;
      }

      if (isPhoneScanConfig(config)) {
        this._scanCallback = scanCallback;
        this.usePhoneScanFallback = true;
        return true;
      }

      return this.registerScanBroadcastByConfig(config, scanCallback);
      // #endif
    },

    registerScanBroadcastByConfig(config, scanCallback) {
      // #ifdef APP-PLUS
      const normalizedConfig = normalizeConfig(config, this.getScannerConfigs());
      if (!normalizedConfig) {
        console.error('扫码枪配置无效');
        return false;
      }

      if (isPhoneScanConfig(normalizedConfig)) {
        this._scanCallback = scanCallback;
        this.usePhoneScanFallback = true;
        return true;
      }

      try {
        this.registerSingleBroadcast(normalizedConfig, scanCallback);
        this.registeredBrands.push(normalizedConfig.brand);
        this.usePhoneScanFallback = false;
        console.log(`${normalizedConfig.name}扫码广播注册成功`);
        return true;
      } catch (error) {
        console.error(`${normalizedConfig.name}扫码广播注册失败:`, error);
        return false;
      }
      // #endif
    },

    registerSingleBroadcast(config, scanCallback) {
      const main = plus.android.runtimeMainActivity();
      
      if (config.needSetup && config.setupAction) {
        try {
          const Intent = plus.android.importClass('android.content.Intent');
          const setupIntent = new Intent(config.setupAction);
          
          Object.keys(config.setupParams || {}).forEach(key => {
            setupIntent.putExtra(key, config.setupParams[key]);
          });
          
          main.sendBroadcast(setupIntent);
          console.log(`${config.name}扫码配置完成`);
        } catch (error) {
          console.error(`${config.name}扫码配置失败:`, error);
        }
      }
      
      const IntentFilter = plus.android.importClass('android.content.IntentFilter');
      const filter = new IntentFilter();
      filter.addAction(config.action);
      
      const self = this;
      const receiver = plus.android.implements(
        'io.dcloud.feature.internal.reflect.BroadcastReceiver',
        {
          onReceive: (context, intent) => {
            console.log(`${config.name}扫码广播接收，isPageActive:`, self.isPageActive);
            
            if (!self.isPageActive) return;
            
            try {
              // 广播回调里的 intent 需要按实例导入，否则 getStringExtra 不可用
              plus.android.importClass(intent);
              const scanResult = intent.getStringExtra(config.dataKey);
              
              console.log(`${config.name}扫码结果:`, scanResult);
              
              if (scanResult) {
                self.handleScanResult(scanResult, scanCallback);
              }
            } catch (error) {
              console.error(`处理${config.name}广播数据出错:`, error);
            }
          }
        }
      );
      
      main.registerReceiver(receiver, filter);
      
      this.scanReceivers.push({
        brand: config.brand,
        receiver: receiver
      });
    },

    handleScanResult(scanResult, scanCallback) {
      try {
        let cleanCode = scanResult.replace(/\s+/g, '').replace(/[\r\n]/g, '');
        
        console.log("扫码结果:", cleanCode);
        
        if (scanCallback) {
          scanCallback(cleanCode);
        }
      } catch (error) {
        console.error("处理扫码结果时出错：", error);
      }
    },
    
    unregisterScanBroadcast() {
      // #ifdef APP-PLUS
      if (this.scanReceivers.length === 0) return;
      
      try {
        const main = plus.android.runtimeMainActivity();
        
        this.scanReceivers.forEach(item => {
          try {
            main.unregisterReceiver(item.receiver);
            console.log(`${item.brand}扫码广播注销成功`);
          } catch (err) {
            console.error(`${item.brand}扫码广播注销失败:`, err);
          }
        });
        
        this.scanReceivers = [];
        this.registeredBrands = [];
        console.log('所有扫码广播注销完成');
      } catch (err) {
        console.error('注销扫码广播失败:', err);
      }
      // #endif
    },
    
    handleGoodsScan(scanCode, successCallback, errorCallback) {
      const trimmedCode = scanCode ? scanCode.toString().trim() : "";
      
      if (!trimmedCode) {
        this.playError && this.playError();
        errorCallback && errorCallback("无效的二维码！");
        return;
      }
      
      if (this.processScanCode) {
        this.processScanCode(trimmedCode, successCallback, errorCallback);
      } else {
        successCallback && successCallback(trimmedCode);
      }
    }
  },
  
  onShow() {
    this.isPageActive = true;
    console.log('页面显示，设置 isPageActive 为 true');
  },
  
  onHide() {
    this.isPageActive = false;
  },
  
  onUnload() {
    this.isPageActive = false;
    this.unregisterScanBroadcast();
  }
}