package com.ruoyi.shadow.kernel;

import com.ruoyi.ft546.protocol.Ft546EncodedCommand;
import com.ruoyi.ft546.protocol.Ft546SrgvCommandIntent;
import com.ruoyi.wcs.application.dispatch.DispatchCycleResult;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public final class ShadowCycleResult {
    private final String statusCode;
    private final String reasonCode;
    private final DispatchCycleResult decisions;
    private final List<Ft546SrgvCommandIntent> intents;
    private final List<Ft546EncodedCommand> encodedCommands;

    private ShadowCycleResult(String statusCode, String reasonCode,
                              DispatchCycleResult decisions,
                              List<Ft546SrgvCommandIntent> intents,
                              List<Ft546EncodedCommand> encodedCommands) {
        this.statusCode = statusCode;
        this.reasonCode = reasonCode;
        this.decisions = decisions;
        this.intents = immutable(intents);
        this.encodedCommands = immutable(encodedCommands);
    }

    public static ShadowCycleResult insufficient(String reasonCode) {
        return new ShadowCycleResult("INSUFFICIENT_FACTS", reasonCode, null,
                Collections.<Ft546SrgvCommandIntent>emptyList(),
                Collections.<Ft546EncodedCommand>emptyList());
    }

    public static ShadowCycleResult retry(DispatchCycleResult decisions) {
        return new ShadowCycleResult("RETRY_SNAPSHOT_CHANGED",
                "SHADOW_TRAFFIC_STATE_CHANGED", decisions,
                Collections.<Ft546SrgvCommandIntent>emptyList(),
                Collections.<Ft546EncodedCommand>emptyList());
    }

    public static ShadowCycleResult comparable(
            DispatchCycleResult decisions,
            List<Ft546SrgvCommandIntent> intents,
            List<Ft546EncodedCommand> encodedCommands) {
        return new ShadowCycleResult("COMPARABLE", null, decisions, intents,
                encodedCommands);
    }

    public static ShadowCycleResult degraded(String reasonCode) {
        return new ShadowCycleResult("DEGRADED", reasonCode, null,
                Collections.<Ft546SrgvCommandIntent>emptyList(),
                Collections.<Ft546EncodedCommand>emptyList());
    }

    public String getStatusCode() { return statusCode; }
    public String getReasonCode() { return reasonCode; }
    public DispatchCycleResult getDecisions() { return decisions; }
    public List<Ft546SrgvCommandIntent> getIntents() { return intents; }
    public List<Ft546EncodedCommand> getEncodedCommands() {
        return encodedCommands;
    }

    private static <T> List<T> immutable(List<T> source) {
        return Collections.unmodifiableList(new ArrayList<T>(source));
    }
}