package ru.den.autoinstaller


import java.io.File
import java.io.IOException
import java.nio.charset.Charset
import java.nio.file.Files
import java.nio.file.Paths


class Setup {

    companion object{

        private fun changeApache2Conf(){
            val path = Paths.get("/etc/apache2/apache2.conf")
            val lines = Files.readAllLines(path)
            var enableScan = false
            for (i in lines.indices){
                if (!enableScan){
                    if (lines[i].contains("<Directory /var/www/>")){
                        enableScan = true
                    }
                }else{
                    if (lines[i].contains("Require all")){
                        lines[i] = "        Require all granted"
                        break
                    }
                }
            }
            Files.write(path, lines, Charset.defaultCharset())
        }

        private fun clearDirectory(dir: File) {
            for (file in dir.listFiles()) {
                if (file.isDirectory) clearDirectory(file)
                file.delete()
            }
        }

        private fun changeConfFirstInstall(domName: String, useHttps: Boolean){
            val path1 = "/etc/apache2/sites-available"
            val path2 = "/etc/apache2/sites-enabled"
            clearDirectory(File(path1))
            clearDirectory(File(path2))
            val lines = ArrayList<String>()
            if (useHttps){
                lines.add("<VirtualHost _default_:443>")
                lines.add("        SSLEngine on")
                lines.add("        ServerName    $domName")
                lines.add("        SSLCertificateFile /etc/ssl/domain_name.crt")
                lines.add("        SSLCertificateKeyFile /etc/ssl/private.key")
                lines.add("        SSLCertificateChainFile /etc/ssl/chain.crt")
                lines.add("        ServerAdmin     webmaster@$domName")
                lines.add("        DocumentRoot    /var/www/html")
                lines.add("        DocumentRoot    /var/www/html")
                lines.add("        DirectoryIndex  index.php index.html index.htm")
                lines.add("        ErrorLog        /var/log/apache2/err.log.$domName")
                lines.add("        <Directory /var/www/html>")
                lines.add("                Options Indexes FollowSymLinks")
                lines.add("                AllowOverride All")
                lines.add("                Require all granted")
                lines.add("        </Directory>")
                lines.add("</VirtualHost>")
            }
            lines.add("<VirtualHost _default_:80>")
            lines.add("        ServerAdmin     webmaster@$domName")
            lines.add("        ServerName      $domName")
            lines.add("        DocumentRoot    /var/www/html")
            lines.add("        DirectoryIndex  index.php index.html index.htm")
            lines.add("        ErrorLog        /var/log/apache2/err.log.$domName")
            lines.add("        <Directory /var/www/html>")
            lines.add("              Options Indexes FollowSymLinks")
            lines.add("              AllowOverride All")
            lines.add("              Require all granted")
            lines.add("        </Directory>")
            lines.add("</VirtualHost>")
            Files.write(Paths.get("$path1/$domName.conf"), lines, Charset.defaultCharset())
            Files.write(Paths.get("$path2/$domName.conf"), lines, Charset.defaultCharset())
        }

        private fun createHtAccessHttps(useHttps: Boolean, mainPath: String, larPath: String){
            val lines = ArrayList<String>()
            if (useHttps){
                lines.add("RewriteEngine On")
                lines.add("RewriteCond %{SERVER_PORT} !^443\$")
                lines.add("RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R=301,L]")
            }
            lines.add("<IfModule mod_rewrite.c>")
            lines.add("    RewriteEngine On")
            lines.add("    RewriteRule ^(.*)\$ $mainPath/$larPath/public/\$1 [L]")
            lines.add("</IfModule>")
            val path = "/var/www/html/.htaccess"
            File(path).delete()
            Files.write(Paths.get(path), lines, Charset.defaultCharset())
        }

        private fun createUpdateScript(mainPath: String, larPath: String){
            val lines = ArrayList<String>()
            lines.add("# chmod +x update.sh")
            lines.add("cd /var/www/html/$mainPath/")
            lines.add("git reset --hard")
            lines.add("git pull --all")
            lines.add("cd $larPath")
            lines.add("php artisan migrate")
            lines.add("php artisan storage:link")
            val path = "/var/www/html/update.sh"
            File(path).delete()
            Files.write(Paths.get(path), lines, Charset.defaultCharset())
        }

        @JvmStatic
        @Throws(IOException::class)
        fun main(args: Array<String>) {
            println("запуск установщика ateuco.online - ok.")
            //com("cmd /c dir %s")
            if ("Linux" != System.getProperty("os.name")){
                println("установщик предназначен только для запуска в линукс Ubuntu - err.")
                return
            }
            println("запуск из Linux - ok.")

            if (!args.contains("-https")) {
                println("вы запустили без параметра -https")
            }else{
                println("вы запустили с параметром -https, не забудьте проверить наличие файлов сертификата /etc/ssl/domain_name.crt, /etc/ssl/private.key, /etc/ssl/chain.crt")
            }

            if (!File("vps-install.sh").exists()){
                println("файл vps-install не найден, работа остановлена")
                return
            }

            val installLines = Files.readAllLines(Paths.get("vps-install.sh"))
            var mainPath = ""
            var larPath  = ""
            for (line in installLines){
                 if (line.startsWith("main_path")){
                    mainPath = line.trim().replace("main_path=\"","").replace("\";","")
                 } else if (line.startsWith("lar_path")){
                    larPath = line.trim().replace("lar_path=\"","").replace("\";","")
                 }
            }
            if (mainPath.isEmpty() || larPath.isEmpty()){
                println("переменные mainPath или larPath не найдены в файле vps-install")
                return
            }

            changeApache2Conf()
            changeConfFirstInstall(if (args.isNotEmpty() && args[0] != "-https") args[0] else "default.ru", args.contains("-https"))
            createHtAccessHttps(args.contains("-https"),mainPath,larPath)
            createUpdateScript(mainPath,larPath)

        }
    }
}