package projectmanager;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.util.Map;
import java.util.HashMap;
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;

public class Manager {
    
    private final IniReader config = new IniReader("C:\\xuj.ini");
    private final BufferedReader cin = new BufferedReader(new InputStreamReader(System.in));
    Map<String, String> path = new HashMap<>();
    
    public Manager() {
        System.out.println("---------------------------------------");
        System.out.println("|       Android Project Manager       |");
        System.out.println("|        by Vladimir Shevchuk         |");
        System.out.println("---------------------------------------");
        checkConfig();
        System.out.println("Папка: '" + path.get("PROJECTS_HOME") + "'");
        System.out.println("help - справка");
        enterCommand();
    }
    
    private void enterCommand() {
        while(true) {
            System.out.print("> ");
            String command = gets();
            
            switch(command.toLowerCase()) {
                case "help":
                    printHelp();
                    break;
                case "remove":
                    removeProject();
                    break;
                case "build":
                    buildProject();
                    break;
                case "create":
                    createProject();
                    break;
                case "show":
                    showProjects();
                    break;
                case "exit":
                    System.out.println("\nВсего хорошего! ;-)");
                    System.exit(0);
                    break;
                default:
                    System.out.println("Неверная команда!");
            }
        }
    }
    
    private void showProjects() {
        File[] pjs = new File(path.get("PROJECTS_HOME")).listFiles(new FileFilter() {
            public boolean accept(File file) {
                return file.isDirectory();
            }
        });
        
        if(pjs.length == 0) {
            System.out.println("\tВы не создали ни одного проекта!");
            return;
        }
        
        for(int i = 0; i < pjs.length; i++)
            System.out.println("\t" + (i + 1) + ". " + pjs[0].getName());
    }
    
    private void removeProject() {
        
    }
    
    private void buildProject() {
        System.out.print("\tНазвание проекта: ");
        String proj = null;
        try{
            proj = cin.readLine();
        }catch(IOException io){}
        String pj_conf_ini = path.get("PROJECTS_HOME") + "/" + proj + "/Project.ini";
        if(!new File(pj_conf_ini).exists()) {
            System.out.println("Не найдена конфигурация проекта!");
            return;
        }
        IniReader pj_conf = new IniReader(pj_conf_ini);
        String api = pj_conf.get("Config", "API");
        System.out.print("\tГенерируем R.java: ");
        String result = exec(path.get("BUILD_TOOLS_PATH") + "/aapt package -f -m -S \"" + path.get("PROJECTS_HOME") + "/" + proj + "/res\" -J \"" + path.get("PROJECTS_HOME") + "/" + proj + "/src\" -M \"" + path.get("PROJECTS_HOME") + "/" + proj + "/AndroidManifest.xml\" -I \"" + path.get("SDK_HOME") + "/platforms/android-" + api + "/android.jar\"").trim();
        if(result.equals(""))
            System.out.println("Успех!");
        else {
            System.out.println("Ошибка!");
            System.out.println("----------");
            System.out.println(result);
            System.out.println("----------");
            return;
        }
        System.out.print("\tКомпилируем: ");
        String pgp = pj_conf.get("Config", "Package").replace(".", "/");
        
        result = exec(path.get("JDK_HOME") + "/bin/javac -d \"" + path.get("PROJECTS_HOME") + "/" + proj + "/obj\" -cp \"" + path.get("SDK_HOME") + "/platforms/android-" + api + "/android.jar\" -sourcepath \"" + path.get("PROJECTS_HOME") + "/" + proj + "/src\" " + path.get("PROJECTS_HOME") + "/" + proj + "/src/" + pgp + "/*.java").trim();
        if(result.equals(""))
            System.out.println("Успех!");
        else {
            System.out.println("Ошибка!");
            System.out.println("----------");
            System.out.println(result);
            System.out.println("----------");
            return;
        }
        
        System.out.print("\tСобираем в .dex: ");
        result = exec(path.get("BUILD_TOOLS_PATH") + "/dx.bat --dex --output=\"" + path.get("PROJECTS_HOME") + "/" + proj + "/bin/classes.dex\" " + path.get("PROJECTS_HOME") + "/" + proj + "/obj");
        if(result.equals(""))
            System.out.println("Успех!");
        else {
            System.out.println("Ошибка!");
            System.out.println("----------");
            System.out.println(result);
            System.out.println("----------");
            return;
        }
        
        System.out.print("\tСобираем в APK: ");
        result = exec(path.get("BUILD_TOOLS_PATH") + "/aapt package -f -M \"" + path.get("PROJECTS_HOME") + "/" + proj + "/AndroidManifest.xml\" -S \"" + path.get("PROJECTS_HOME") + "/" + proj + "/res\" -I \"" + path.get("SDK_HOME") + "/platforms/android-" + api + "/android.jar\" -F \"" + path.get("PROJECTS_HOME") + "/" + proj + "/bin/" + proj + ".unsigned.apk\" \"" + path.get("PROJECTS_HOME") + "/" + proj + "/bin\"");
        if(result.equals(""))
            System.out.println("Успех!");
        else {
            System.out.println("Ошибка!");
            System.out.println("----------");
            System.out.println(result);
            System.out.println("----------");
            return;
        }
        
        System.out.print("\tСоздаём keystore: ");
        exec(path.get("JDK_HOME") + "/bin/keytool -genkey -validity 10000 -dname \"CN=AndroidDebug, O=Android, C=US\" -keystore " + path.get("PROJECTS_HOME") + "/" + proj + "/" + proj + ".keystore -storepass android -keypass android -alias androiddebugkey -keyalg RSA -v -keysize 2048");
        System.out.println("Успех!");
        System.out.print("\tПодписываем APK: ");
        result = exec(path.get("JDK_HOME") + "/bin/jarsigner -sigalg SHA1withRSA -digestalg SHA1 -keystore " + path.get("PROJECTS_HOME") + "/" + proj + "/" + proj + ".keystore -storepass android -keypass android -signedjar \"" + path.get("PROJECTS_HOME") + "/" + proj + "/bin/" + proj + ".apk\" \"" + path.get("PROJECTS_HOME") + "/" + proj + "/bin/" + proj + ".unsigned.apk\" androiddebugkey");
        System.out.println("Успех!");
        System.out.print("\tЧистим мусор: ");
        //coming soon...
        System.out.println("Успех!");
    }
    
    private String exec(String command) {
        Runtime runtime = Runtime.getRuntime();
        StringBuilder content = new StringBuilder();
        try {
            Process process = runtime.exec(command);
            InputStream is = process.getErrorStream() != null ? process.getErrorStream() : process.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            String line;
            while ((line = br.readLine()) != null) {
                content.append(line);
                content.append("\n");
            }
        }catch(Exception e){
            System.out.println("Системная ошибка!");
            e.printStackTrace();
            System.exit(0);
        }
        
        return content.toString();
    }
    
    private void createProject() {
        System.out.print("Название проекта(TestProject): ");
        String project_name = gets();
        System.out.print("Package(com.example.test): ");
        String app_package = gets();
        System.out.print("Activity name(MainActivity): ");
        String activity = gets();
        System.out.print("API Level(19): ");
        String api = gets();
        
        if(project_name.equals(""))
            project_name = "TestProject";
        if(app_package.equals(""))
            app_package = "com.example.test";
        if(activity.equals(""))
            activity = "MainActivity";
        if(api.equals(""))
            api = "19";
        
        if(!new File(path.get("SDK_HOME") + "/platforms/android-" + api + "/android.jar").exists()) {
            System.out.println("android.jar для API " + api + " не найдено!");
            System.exit(0);
        }
        
        if(new File(path.get("PROJECTS_HOME") + "/" + project_name).exists()) {
            System.out.println("Проект с таким названием уже существует!");
            return;
        }
        
        if(!new File(path.get("PROJECTS_HOME") + "/" + project_name).mkdir()) {
            System.out.println("Невозможно создать проект с таким названием, или запись в папку запрещена!");
            return;
        }
        
        String project_path = path.get("PROJECTS_HOME") + "/" + project_name + "/";
        writeFile(project_path + "AndroidManifest.xml", getResource("AndroidManifest").replace("{package}", app_package).replace("{api}", api).replace("{project}", project_name).replace("{activity}", activity));
        new File(project_path + "bin").mkdir();
        new File(project_path + "obj").mkdir();
        new File(project_path + "res").mkdir();
        new File(project_path + "src").mkdir();
        new File(project_path + "res/values").mkdir();
        writeFile(project_path + "res/values/strings.xml", getResource("strings"));
        StringBuilder curr = new StringBuilder(project_path + "src/");
        String[] p = app_package.split("\\.");
        for(String d : p) {
            curr.append(d);
            curr.append("/");
            new File(curr.toString()).mkdir();
        }
        
        writeFile(curr.toString() + activity + ".java", getResource("Activity").replace("{package}", app_package).replace("{activity}", activity));
        writeFile(project_path + "Project.ini", "[Config]\nAPI = " + api + "\nPackage = " + app_package);
        System.out.println("Проект '" + project_name + "' успешно создан!");
    }
    
    private void writeFile(String fileName, String text) {
        try {
            PrintWriter out = new PrintWriter(new File(fileName).getAbsoluteFile());
            try {
                out.print(text);
            } finally {
                out.close();
            }
        } catch(IOException e) {
            System.out.println("Системная ошибка!");
            System.exit(0);
        }
    }
    
    private String gets() {
        try {
            return cin.readLine();
        }catch(IOException io) {
            System.out.println("Системная ошибка!");
            System.exit(0);
        }
        return null;
    }
    
    private String getResource(String file) {
        DataInputStream dis = new DataInputStream(getClass().getResourceAsStream("/resources/" + file));
        StringBuilder strBuff = new StringBuilder();
        int ch = 0;
        try {
            while ((ch = dis.read()) != -1) {
                strBuff.append((char) ((ch >= 0xc0 && ch <= 0xFF) ? (ch + 0x350) : ch));
            }
            dis.close();
        } catch (Exception e) {
            System.err.println("ERROR!");
            System.exit(0);
        }
        return strBuff.toString();
    }
    
    private void printHelp() {
        String[] commands = {
            "help - справка",
            "exit - выход",
            "show - показать проекты",
            "create - создать проект",
            "remove - удалить проект",
            "build - собрать проект"
        };
        
        for(String command : commands)
            System.out.println("\t" + command);
    }
    
    private void checkConfig() {
        boolean error = false;
        if(!new File(config.get("Path", "JDK_HOME")).exists()) {
            System.out.println("Папка с JDK не найдена!");
            error = true;
        }else
            path.put("JDK_HOME", config.get("Path", "JDK_HOME"));
        
        if(!new File(config.get("Path", "SDK_HOME")).exists()) {
            System.out.println("Папка с Android SDK не найдена!");
            error = true;
        }else
            path.put("SDK_HOME", config.get("Path", "SDK_HOME"));
        
        if(!new File(config.get("Path", "PROJECTS_HOME")).exists()) {
            System.out.println("Папка с проектами не найдена!");
            error = true;
        }else
            path.put("PROJECTS_HOME", config.get("Path", "PROJECTS_HOME"));
        
        if(!new File(config.get("Path", "SDK_HOME") + "/build-tools/" ).exists()) {
            System.out.println("Папка build-tools в Android SDK не найдена!");
            error = true;
        }
        
        if(error) {
            System.out.println("\nПроверьте настройки в файле config.ini и запустите программу ещё раз!");
            System.exit(0);
        }
        
        error = false;
        
        String btv = getLatestBuildToolsVersion(new File(path.get("SDK_HOME") + "/build-tools/"));
        
        if(btv != null)
            path.put("BUILD_TOOLS_PATH", path.get("SDK_HOME") + "/build-tools/" + btv);
        else {
            System.out.println("Не найдено инструментов " + path.get("SDK_HOME") + "/build-tools/");
            System.exit(0);
        }
        
        String[] checkFiles = {
            path.get("BUILD_TOOLS_PATH") + "/aapt.exe",
            path.get("BUILD_TOOLS_PATH") + "/dx.bat",
            path.get("SDK_HOME") + "/platform-tools/adb.exe",
            path.get("JDK_HOME") + "/bin/javac.exe",
            path.get("JDK_HOME") + "/bin/keytool.exe",
            path.get("JDK_HOME") + "/bin/jarsigner.exe"
        };
        
        for(String file : checkFiles)
            if(!new File(file).exists()) {
                System.out.println("Файл '" + file + "' не найден!");
                error = true;
            }
        if(error)
            System.exit(0);
        
    }
    
    private String getLatestBuildToolsVersion(File path) {
        File[] dirs = path.listFiles(new FileFilter() {
            public boolean accept(File file) {
                return file.isDirectory();
            }
        });
        for(int i = dirs.length - 1; i >= 0; i--) 
            try {
                Integer.parseInt(dirs[i].getName().substring(0,1));
                return dirs[i].getName();
            }catch(NumberFormatException numex) {}
        
        return null;
    }
    
}