/*
 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
 *
 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
 * portions of the Software.
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package org.graalvm.wasm.utils;

import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;

public class WasmResource {
    public static String getResourceAsString(String resourceName, boolean fail) throws IOException {
        byte[] contents = getResourceAsBytes(resourceName, fail);
        if (contents != null) {
            return new String(contents);
        } else {
            assert !fail;
            return null;
        }
    }

    public static byte[] getResourceAsBytes(String resourceName, boolean fail) throws IOException {
        InputStream stream = WasmResource.class.getResourceAsStream(resourceName);
        if (stream == null) {
            if (fail) {
                Assert.fail(String.format("Could not find resource: %s", resourceName));
            } else {
                return null;
            }
        }
        byte[] contents;
        try {
            contents = new byte[stream.available()];
            new DataInputStream(stream).readFully(contents);
        } finally {
            stream.close();
        }
        return contents;
    }

    public static Object getResourceAsTest(String baseName, boolean fail) throws IOException {
        final byte[] bytes = getResourceAsBytes(baseName + ".wasm", false);
        if (bytes != null) {
            return bytes;
        }
        final String text = getResourceAsString(baseName + ".wat", false);
        if (text != null) {
            return text;
        }
        if (fail) {
            Assert.fail(String.format("Could not find test (neither .wasm or .wat): %s", baseName));
        }
        return null;
    }

    public static String getResourceIndex(String resourcePath) throws IOException {
        return WasmResource.getResourceAsString(resourcePath + "/" + "wasm_test_index", true);
    }
}