package wa.server.plugin.apache;

import wa.server.WAConstants;
import wa.server.plugin.WAConfigObject;
import zutil.ui.Configurator;

import java.io.IOException;
import java.io.PrintStream;


public abstract class ApacheAbstractConfig extends WAConfigObject {
    private static final String CONFIG_NAME = "vhost";
    private static final String NAVIGATION_NAME = "Apache Virtual Host";

    private static final String SITE_AVAILABLE_DIR = "/apache2/site-available/";
    private static final String SITE_ENABLED_DIR = "/apache2/site-enabled/";


    @Configurator.Configurable("Domain")
    protected String domain;
    protected transient String domain_old;
    @Configurator.Configurable("WWW Redirect")
    protected boolean wwwRedirect;
    @Configurator.Configurable("SSL")
    protected boolean ssl;



    public String getDomain() {
        return domain;
    }
    public void setDomain(String domain) {
        this.domain = domain;
    }
    public boolean wwwRedirectEnabled() {
        return wwwRedirect;
    }
    public void setWWWRedirect(boolean redirect) {
        this.wwwRedirect = redirect;
    }
    public boolean sslEnabk() {
        return ssl;
    }
    public void setSSL(boolean ssl) {
        this.ssl = ssl;
    }



    @Override
    public void saveConfiguration() throws IOException {
        if(domain != domain_old){ // Configuration file has changed name
            WAConstants.getConfigFile(SITE_AVAILABLE_DIR+ domain_old).delete();
            domain_old = domain;
        }
        PrintStream out = new PrintStream(
                WAConstants.getConfigFile(SITE_AVAILABLE_DIR+ domain));

        saveConfiguration(out);
        out.close();
    }

    private void saveConfiguration(PrintStream out){
        if (wwwRedirect){
            out.println("<VirtualHost *:80>");
            out.println("    ServerName www."+ domain);
            out.println();
            out.println("    RewriteEngine on");
            out.println("    RewriteCond %{HTTP_HOST} ^www\\..*$ [NC]");
            out.println("    RewriteRule ^ http://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]"); // 301: permanent, 302: temporary
            out.println("</VirtualHost>");
            out.println();
        }

        if (ssl){
            out.println("<VirtualHost *:80>");
            out.println("   ServerName "+ domain);
            out.println();
            out.println("   RewriteEngine On");
            out.println("   RewriteCond  %{SERVER_PORT} !^443$");
            out.println("   RewriteRule  ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]");
            out.println("</VirtualHost>");
            out.println("<VirtualHost *:443>");
            out.println("   ServerName "+ domain +":443");
            out.println();
            apacheConfiguration(out);
            out.println();
            out.println("   ServerAlias "+domain);
            out.println("   Include /etc/letsencrypt/options-ssl-apache.conf");
            out.println("   SSLCertificateFile      /etc/letsencrypt/live/"+domain+"/cert.pem");
            out.println("   SSLCertificateKeyFile   /etc/letsencrypt/live/"+domain+"/privkey.pem");
            out.println("   SSLCertificateChainFile /etc/letsencrypt/live/"+domain+"/chain.pem");
            out.println("</VirtualHost>");
            out.println("");
        }
        else {
            out.println("<VirtualHost *:80>");
            out.println("   ServerName "+ domain);
            out.println();
            apacheConfiguration(out);
            out.println("</VirtualHost>");
            out.println("");
        }
    }

    protected abstract void apacheConfiguration(PrintStream out);


    @Override
    public void deleteConfiguration() throws Exception {

    }
}