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package org.yamcs.xtce;

import java.io.Serializable;

import org.yamcs.xtce.util.DoubleRange;

/**
 * Contains five ranges: Watch, Warning, Distress, Critical, and Severe each in increasing severity. Normally, only the
 * Warning and Critical ranges are used and the color yellow is associated with Warning and the color red is associated
 * with Critical. The ranges given are valid for numbers lower than the min and higher than the max values. These ranges
 * should not overlap, but if they do, assume the most severe range is to be applied. All ranges are optional and it is
 * quite allowed for there to be only one end of the range. Range values are in calibrated engineering units.
 * 
 * Note that we actually keep here the ranges for the IN_LIMITS. This means that if range.inRange(v)!=0 (meaning v out
 * of range), then the parameter is in alarm state.
 * 
 * @author nm
 *
 */
public class AlarmRanges implements Serializable {
    private static final long serialVersionUID = 200706052351L;
    DoubleRange watchRange = null;
    DoubleRange warningRange = null;
    DoubleRange distressRange = null;
    DoubleRange criticalRange = null;
    DoubleRange severeRange = null;

    public void addWatchRange(DoubleRange range) {
        if (this.watchRange == null) {
            this.watchRange = range;
        } else {
            this.watchRange = this.watchRange.intersectWith(range);
        }
    }

    public void addWarningRange(DoubleRange range) {
        if (this.warningRange == null) {
            this.warningRange = range;
        } else {
            this.warningRange = this.warningRange.intersectWith(range);
        }
    }

    public void addDistressRange(DoubleRange range) {
        if (this.distressRange == null) {
            this.distressRange = range;
        } else {
            this.distressRange = this.distressRange.intersectWith(range);
        }
    }

    public void addCriticalRange(DoubleRange range) {
        if (this.criticalRange == null) {
            this.criticalRange = range;
        } else {
            this.criticalRange = this.criticalRange.intersectWith(range);
        }
    }

    public void addSevereRange(DoubleRange range) {
        if (this.severeRange == null) {
            this.severeRange = range;
        } else {
            this.severeRange = this.severeRange.intersectWith(range);
        }
    }

    public void addRange(DoubleRange range, AlarmLevels level) {
        switch (level) {
        case WATCH:
            addWatchRange(range);
            break;
        case WARNING:
            addWarningRange(range);
            break;
        case DISTRESS:
            addDistressRange(range);
            break;
        case CRITICAL:
            addCriticalRange(range);
            break;
        case SEVERE:
            addSevereRange(range);
            break;
        default:
            throw new IllegalArgumentException("Level '" + level + "' not allowed for alarm ranges");

        }
    }

    public DoubleRange getWatchRange() {
        return watchRange;
    }

    public DoubleRange getWarningRange() {
        return warningRange;
    }

    public DoubleRange getDistressRange() {
        return distressRange;
    }

    public DoubleRange getCriticalRange() {
        return criticalRange;
    }

    public DoubleRange getSevereRange() {
        return severeRange;
    }

    public void setWarningRange(DoubleRange warningRange) {
        this.warningRange = warningRange;
    }

    @Override
    public String toString() {
        return ((watchRange != null) ? " watchRange" + watchRange : "") +
                ((warningRange != null) ? " warningRange" + warningRange : "") +
                ((distressRange != null) ? " distressRange" + distressRange : "") +
                ((criticalRange != null) ? " criticalRange" + criticalRange : "") +
                ((severeRange != null) ? " severeRange" + severeRange : "");
    }
}