/*
 * Copyright (c) 2015 EMC Corporation
 * All Rights Reserved
 */
package com.emc.sa.asset;

import java.lang.reflect.Method;
import java.util.List;

import org.apache.commons.lang.StringUtils;

import com.emc.sa.asset.annotation.Asset;
import com.emc.sa.asset.annotation.AssetDependencies;
import com.emc.sa.asset.annotation.AssetNamespace;
import com.google.common.collect.Lists;

/** Describes a javaMethod that can be used to retrieve the specific Asset options */
public class AssetOptionsMethodInfo {

    public Method javaMethod;
    public String assetNamespace;
    public String assetName;
    public List<String> assetDependencies;

    public AssetOptionsMethodInfo(AssetNamespace namespace, Asset asset, Method javaMethod) {
        this.assetNamespace = namespace.value();
        this.assetName = formatAssetTypeName(namespace.value(), asset.value());
        this.assetDependencies = Lists.newArrayList();
        final AssetDependencies assetDependenciesAnnotation = javaMethod.getAnnotation(AssetDependencies.class);
        if (assetDependenciesAnnotation != null) {
            for (String dependency : assetDependenciesAnnotation.value()) {
                this.assetDependencies.add(formatAssetTypeName(namespace.value(), dependency));
            }
        }
        this.javaMethod = javaMethod;
    }

    public Object convertParameter(int index, String value) {
        Class<?>[] types = javaMethod.getParameterTypes();
        if ((index >= 0) && (index < types.length)) {
            Class<?> type = types[index];
            return AssetConverter.convert(value, type);
        }
        return value;
    }

    public String formatAssetTypeName(String namespace, String asset) {
        if (StringUtils.contains(asset, '.')) {
            return asset;
        }
        else {
            return String.format("%s.%s", namespace, asset);
        }
    }

    @Override
    public String toString() {
        return "AssetOptionsMethod : " + assetNamespace + assetName +
                "\n\t Java Method: " + javaMethod.getName() +
                "\n\t Asset Dependencies: " + StringUtils.join(assetDependencies, ", ");
    }
}