/**
 * 日志状态管理
 */
export default {
  namespaced: true,
  state: {
    logs: [],
    maxLogs: 1000
  },
  mutations: {
    ADD_LOG(state, logEntry) {
      state.logs.push(logEntry);
      if (state.logs.length > state.maxLogs) {
        state.logs.shift();
      }
    },
    CLEAR_LOGS(state) {
      state.logs = [];
    }
  },
  actions: {
    addLog({ commit }, { level, message }) {
      const timestamp = new Date().toLocaleString();
      const logEntry = {
        time: timestamp,
        level: level.toUpperCase(),
        message: message
      };
      commit('ADD_LOG', logEntry);
    },
    clearLogs({ commit }) {
      commit('CLEAR_LOGS');
      commit('ADD_LOG', {
        time: new Date().toLocaleString(),
        level: 'INFO',
        message: '日志已清空'
      });
    },
    exportLogs({ state, commit }) {
      const logText = state.logs.map(log =>
        `[${log.time}] [${log.level}] ${log.message}`
      ).join('\n');

      const blob = new Blob([logText], { type: 'text/plain' });
      const url = URL.createObjectURL(blob);
      const a = document.createElement('a');
      a.href = url;
      a.download = `logs_${new Date().toISOString().replace(/[:.]/g, '-')}.txt`;
      a.click();
      URL.revokeObjectURL(url);
      
      commit('ADD_LOG', {
        time: new Date().toLocaleString(),
        level: 'INFO',
        message: '日志已导出'
      });
    }
  },
  getters: {
    logEntries: state => state.logs
  }
};