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!7

cmodule RebootConsciousness > DynPrintLogAndEnabled {
  DoubleRange typicalTimeToReboot = new(1000, 0);
  
  start-thread {
    // extract typicalTimeToReboot
    /*for (PairS p : overlappingPairs(asList(linesFromFile(rebootLogFile()))))  
      analyzeLines(pairToList(p)); // TODO: don't log stuff
    clearPrintLog();
    print(+typicalTimeToReboot);*/
      
    theTest();
    watchQuotedLog_future(rebootLogFile(), 1000, voidfunc(S s) {
      new Matches m;
      if "* Rebooting computer"
        predict("A reboot will happen in between "
          + formatDouble(typicalTimeToReboot.start, 1) + " and "
          + formatDouble(typicalTimeToReboot.end, 1) + " seconds");
    });
  }
  
  void theTest {
    LS lastLines = unquoteAll(lastNLines(2, rebootLogFile()));
    pnl(lastLines);
    analyzeLines(lastLines);
  }
  
  void analyzeLines(LS lastLines) {
    if (empty(lastLines)) ret;
    if (l(lastLines) == 1) ret with confused("Only one event: " + lastLines);
    
    S line1 = first(lastLines), line2 = second(lastLines);
    new Matches m;
    new Matches m2;
    if (match("* Rebooting computer", line1, m)
      && match("* Boot timestamp changed from * to *", line2, m2)) {
      long ts1 = parseLong(m.get(0)), ts2 = parseLong(m2.get(2));
      if (ts2 > ts1) {
        notConfused("All OK! A reboot happened after my reboot command");
        double timeToReboot = toSeconds(ts2-ts1);
        setField(typicalTimeToReboot := DoubleRange(
          min(typicalTimeToReboot.start, timeToReboot),
          max(typicalTimeToReboot.end, timeToReboot));
      } else
        confused("Timestamps are weird: " + lastLines);
    } else
      confused("Was expecting reboot cmd & then reboot effect: " + lastLines);
  }
  
  void confused(S msg) {
    printAndProgramLog("Confused: " + msg);
  }
  
  void notConfused(S msg) {
    printAndProgramLog("I am very satisfied. " + msg);
  }
  
  void predict(S msg) {
    printAndProgramLog("I predict: " + msg);
    dm_sayInEnglish(msg);
  }
}