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package ars.spring.context;

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

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.event.ContextClosedEvent;
import org.springframework.context.event.ContextRefreshedEvent;

import ars.util.Strings;
import ars.file.office.Converts;

/**
 * OpenOffice应用配置
 *
 * @author wuyongqiang
 */
public class OpenOfficeApplicationConfiguration extends ApplicationListener {
    private boolean autorun = true; // 是否自动运行服务
    protected final Logger logger = LoggerFactory.getLogger(this.getClass());

    public boolean isAutorun() {
        return autorun;
    }

    public void setAutorun(boolean autorun) {
        this.autorun = autorun;
    }

    public void setHost(String host) {
        Converts.setOpenOfficeHost(host);
    }

    public void setPort(int port) {
        Converts.setOpenOfficePort(port);
    }

    /**
     * 获取服务进程标识
     *
     * @return 服务进程标识
     * @throws IOException
     */
    private int getProcess() throws IOException {
        byte[] buffer = new byte[1024];
        if (System.getProperty("os.name").startsWith("Windows")) {
            InputStream is = Runtime.getRuntime().exec("cmd /c tasklist|findstr soffice.exe").getInputStream();
            try {
                while (is.read(buffer) > 0) {
                    return Integer.parseInt(new String(buffer).substring(11).trim().split(" ")[0]);
                }
            } finally {
                is.close();
            }
            return 0;
        }
        String[] command = new String[]{"/bin/sh", "-c", "ps -e|grep -w soffice"};
        InputStream is = Runtime.getRuntime().exec(command).getInputStream();
        try {
            while (is.read(buffer) > 0) {
                return Integer.parseInt(new String(buffer).trim().split(" ")[0]);
            }
        } finally {
            is.close();
        }
        return 0;
    }

    @Override
    protected void initialize(ContextRefreshedEvent event) {
        if (this.autorun && (Strings.LOCALHOST.equals(Converts.getOpenOfficeHost())
            || Strings.LOCALHOST_ADDRESS.equals(Converts.getOpenOfficeHost())
            || Strings.DEFAULT_LOCALHOST_ADDRESS.equals(Converts.getOpenOfficeHost()))) {
            synchronized (this) {
                try {
                    if (this.getProcess() == 0) {
                        this.logger.info("Start openoffice service");
                        String command = new StringBuilder("soffice -headless -accept=\"socket,host=")
                            .append(Converts.getOpenOfficeHost()).append(",port=")
                            .append(Converts.getOpenOfficePort()).append(";urp;\" -nofirststartwizard").toString();
                        if (System.getProperty("os.name").startsWith("Windows")) {
                            Runtime.getRuntime().exec("cmd /c start " + command);
                        } else {
                            Runtime.getRuntime().exec(new String[]{"/bin/sh", "-c", command, "&"});
                        }
                    }
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
        }
    }

    @Override
    protected void destroy(ContextClosedEvent event) {
        if (this.autorun && (Strings.LOCALHOST.equals(Converts.getOpenOfficeHost())
            || Strings.LOCALHOST_ADDRESS.equals(Converts.getOpenOfficeHost())
            || Strings.DEFAULT_LOCALHOST_ADDRESS.equals(Converts.getOpenOfficeHost()))) {
            synchronized (this) {
                try {
                    int process = 0;
                    if ((process = this.getProcess()) > 0) {
                        this.logger.info("Stop openoffice service");
                        if (System.getProperty("os.name").startsWith("Windows")) {
                            Runtime.getRuntime().exec("cmd /c taskkill /PID " + process + " /F /T");
                        } else {
                            Runtime.getRuntime().exec("/bin/kill " + process);
                        }
                    }
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
        }
    }

}