package frame.file.processor;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Stack;

public class Processor {
	private String taskName;
    private Stack<Phase> phaseStack;
    private List<String> messageList;
    private Phase priorPhase;

    private long max;
    private long min;
    private long step;
    private long position;
    private long stepBuffer;
    private String stepMessage;

    public Processor() {
        messageList = new ArrayList<String>(100);
        phaseStack = new Stack<Phase>();

        max = 0;
        min = 0;
        step = 0;
        position = 0;
        stepBuffer = 0;
        stepMessage = "0%--------0/0";
    }

    public void clear() {
        priorPhase = null;
        phaseStack.clear();
        clearMessage();
        clearStep();
    }

    public void clearStep() {
        max = 0;
        min = 0;
        step = 0;
        position = 0;
        stepBuffer = 0;
        stepMessage = "0%--------0/0";
    }

    public void stepIt() {
        if (position < max) {
            position++;
            stepBuffer++;

            if (stepBuffer >= step) {
                double percent = position * 100 / max;
                stepBuffer = 0;
                stepMessage = Math.round(percent) + "%" + "--------" + position + "/" + max;
            }
        }
        else {
            stepMessage = "100%" + "--------" + max + "/" + max;
        }
    }

    public void stepIt(int aStep) {
        if (position < max) {
            position = Math.min(position + aStep, max);
            stepBuffer = stepBuffer + aStep;

            if (stepBuffer >= step) {
                double percent = position * 100 / max;
                stepBuffer = 0;
                stepMessage = Math.round(percent) + "%" + "--------" + position + "/" + max;
            }
        }
        else {
            stepMessage = "100%" + "--------" + max + "/" + max;
        }
    }

    public long getMax() {
        return max;
    }

    public void setMax(long max) {
        clearStep();
        this.max = max;
    }

    public long getMin() {
        return min;
    }

    public void setMin(int min) {
        this.min = min;
    }

    public String getStepMsg() {
        return stepMessage;
    }

    public void newTask(String name) {
        taskName = name;
	
        clearMessage();
        clearStep();
	
        Date datetime = new Date();
        appendLine(name + "开始..." + datetime);
    }

    public void endTask() {
        appendLine(taskName + "结束");
    }

    public void newPhase(String code, String phaseName) {
        Phase phase = new Phase(code, phaseName);
        phase.setNo(priorPhase, phaseStack);

        String indent = "";
        for (int i = 0; i < phaseStack.size(); i++) {
            indent = indent + "&nbsp;&nbsp;&nbsp;&nbsp;";
        }

        String title = indent + phase.getNoString() + phaseName;
        appendLine(title);

        phaseStack.push(phase);
        priorPhase = null;
    }

    public void endPhase() {
        clearStep();
        priorPhase = phaseStack.pop();
    }

    public void clearMessage() {
        messageList.clear();
    }

    private void appendLine(String message) {
        if (message != null) {
            messageList.add(message);
        }
    }

    public void appendMesage(String message) {
        String indent = "";
        for (int i = 0; i <= phaseStack.size(); i++) {
            indent = indent + "&nbsp;&nbsp;&nbsp;&nbsp;";
        }

        messageList.add(indent + message);
    }

    public void appendInlineMessage(String message) {
        if (message != null) {
            if (messageList.isEmpty()) {
                messageList.add(message);
                return;
            }

            int max = messageList.size() - 1;
            String prior = messageList.get(max);
            prior = prior + "......" + message;

            messageList.remove(max);
            messageList.add(prior);
        }
    }

    public void setStepName(String step) {
        messageList.add(step);
    }

    public List<String> getMessageList() {
        return messageList;
    }

    public void terminate(String error) {
        messageList.add(error);
    }

    public Boolean isEmpty() {
        return messageList.size() == 0;
    }

    public List<Phase> getCurrentPhases() {
	    List<Phase> resultList = new ArrayList<Phase>();
	
	    for (Phase phase : phaseStack) {
		    resultList.add(phase);
	    }
	
	    return resultList;
    }

}