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/*
 * Copyright 2003-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Derived from Boon all rights granted to Groovy project for this fork.
 */
package groovy.json.internal;

import groovy.json.JsonException;

import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.Arrays;

/**
 * @author Rick Hightower
 */
public class Exceptions {

    public static boolean die() {
        throw new JsonInternalException("died");
    }

    public static boolean die(String message) {
        throw new JsonInternalException(message);
    }

    public static  T die(Class clazz, String message) {
        throw new JsonInternalException(message);
    }

    public static void handle(java.lang.Exception e) {
        throw new JsonInternalException(e);
    }

    public static  T handle(Class clazz, java.lang.Exception e) {

        if (e instanceof JsonInternalException) {
            throw (JsonInternalException) e;
        }
        throw new JsonInternalException(e);
    }

    public static  T handle(Class clazz, String message, Throwable e) {

        throw new JsonInternalException(message, e);
    }

    public static void handle(String message, Throwable e) {
        throw new JsonInternalException(message, e);
    }

    public static class JsonInternalException extends JsonException {

        public JsonInternalException(String message) {
            super(message);
        }

        public JsonInternalException(String message, Throwable cause) {
            super(message, cause);
        }

        public JsonInternalException(Throwable cause) {
            super("Wrapped Exception", cause);
        }

        public void printStackTrace(PrintStream s) {

            s.println(this.getMessage());
            if (getCause() != null) {
                s.println("This Exception was wrapped, the original exception\n" +
                        "stack trace is:\n");
                getCause().printStackTrace(s);
            } else {
                super.printStackTrace(s);
            }

        }

        public String getMessage() {
            return super.getMessage() + (getCause() == null ? "" :
                    getCauseMessage());
        }

        private String getCauseMessage() {
            return "\n CAUSE " + getCause().getClass().getName() + " :: " +
                    getCause().getMessage();
        }

        public String getLocalizedMessage() {
            return this.getMessage();
        }

        public StackTraceElement[] getStackTrace() {
            if (getCause() != null) {
                return getCause().getStackTrace();
            } else {
                return super.getStackTrace();
            }

        }

        public Throwable getCause() {
            return super.getCause();
        }

        public void printStackTrace(PrintWriter s) {

            s.println(this.getMessage());

            if (getCause() != null) {
                s.println("This Exception was wrapped, the original exception\n" +
                        "stack trace is:\n");
                getCause().printStackTrace(s);
            } else {
                super.printStackTrace(s);
            }
        }

        public void printStackTrace() {

            System.err.println(this.getMessage());

            if (getCause() != null) {
                System.err.println("This Exception was wrapped, the original exception\n" +
                        "stack trace is:\n");
                getCause().printStackTrace();
            } else {
                super.printStackTrace();
            }
        }
    }

    public static String toString(Exception ex) {
        CharBuf buffer = CharBuf.create(255);
        buffer.addLine(ex.getLocalizedMessage());

        final StackTraceElement[] stackTrace = ex.getStackTrace();
        for (StackTraceElement element : stackTrace) {
            buffer.add(element.getClassName());
            sputs(buffer, "class", element.getClassName(),
                    "method", element.getMethodName(), "line", element.getLineNumber());
        }

        return buffer.toString();

    }

    public static String sputs(CharBuf buf, Object... messages) {

        int index = 0;
        for (Object message : messages) {
            if (index != 0) {
                buf.add(' ');
            }
            index++;

            if (message == null) {
                buf.add("");
            } else if (message.getClass().isArray()) {
                buf.add(Arrays.asList(message).toString());
            } else {
                buf.add(message.toString());
            }
        }
        buf.add('\n');

        return buf.toString();

    }

    public static String sputs(Object... messages) {
        CharBuf buf = CharBuf.create(100);
        return sputs(buf, messages);
    }

}