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package org.yamcs.http;

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

import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.codec.http.HttpResponseStatus;

/**
 * When an unsupported HTTP method was used for a specific path
 */
public class MethodNotAllowedException extends HttpException {

    private static final long serialVersionUID = 1L;

    private List allowedMethods;

    public MethodNotAllowedException(HttpMethod method, String uri, Collection allowedMethods) {
        super(String.format("Unsupported HTTP method '%s' for resource '%s'", method, uri));
        this.allowedMethods = new ArrayList<>(allowedMethods);
        Collections.sort(this.allowedMethods);
    }

    public MethodNotAllowedException(HttpMethod method, String uri, HttpMethod... allowedMethods) {
        this(method, uri, Arrays.asList(allowedMethods));
    }

    public MethodNotAllowedException(HandlerContext ctx, HttpMethod... method) {
        this(ctx.getNettyFullHttpRequest().method(), ctx.getNettyFullHttpRequest().uri(), Arrays.asList(method));
    }

    public List getAllowedMethods() {
        return allowedMethods;
    }

    @Override
    public HttpResponseStatus getStatus() {
        return HttpResponseStatus.METHOD_NOT_ALLOWED;
    }
}