package Bill;

import java.io.*;

import Mail.MailHandler;

public class User {
	private static String Account;
	private static String Passwd;
	private static String DirectoryStructure;
	private static boolean isLogin=false;
	private static String WorkingDirectory="/";

	public void setisLogin(boolean TorF){
		isLogin = TorF;
	}
	public void setAccount(String account){
		Account = account;
	}
	public void setPasswd(String pass){
		Passwd = pass;
	}
	public void setDirectory(String mydir){
		DirectoryStructure = mydir;
	}
	public boolean login(String myAccount, String myPasswd){
		//把seed server的內容抓進來account_server_table
		String [][]account_table = BillHandler.connect_seed_server();

		//把Account拿去做DHT，算出該Account的dir.xml放在哪一個account_server
		//account_server_number= 0或1或2，目前只能處理1(gmail)或2(hotmail)
		int account_number = BillHandler.deceived_DHT(myAccount);

		String server = "";
		if(account_number == 1)
			server = "imap.gmail.com";	//getContentOfSubject需要適當的server，所以需要此if-else。
		else if(account_number == 2)
			server = "pop3.live.com";
		else	//account_server_number ==0
			server = "error";

		String dir_xml = MailHandler.getContentOfSubject(server,account_table[account_number][0],account_table[account_number][1],myAccount+"_dir.xml");

		if(dir_xml.equals("-1") ){
			System.out.println("帳號或密碼錯誤！");
			System.out.println("在account_server中找不到"+myAccount+"_dir.xml"+"的主旨");
			System.out.println("登入失敗");
			setisLogin(false);
			return false;
		}
		System.out.println("登入成功");
		setisLogin(true);
		setAccount(myAccount);
		setPasswd(myPasswd);
		setDirectory(dir_xml);
		return true;
	}


	public boolean register(String Wanted_Account , String Wanted_Passwd){
		/*檢查帳號有無重覆 ->把帳號拿去做DHT，得到一個account_server，
		 * 看該account_server有沒有Wanted_Account_dir.xml這個檔案
		 * 若已存在，傳回false
		 * 若不存在，建立xml檔。方式：寄信到account_server ,主旨：Wanted_Account_dir.xml
		 */
		System.out.println("*** in User.java's register ***");
		int account_server = BillHandler.deceived_DHT(Wanted_Account);
		if(account_server == 0){
			/*為dropbox
			 *檢查 nctunusa2011@gmail.com的dropbox空間，有沒有Wanted_Account_dir.xml這個檔案
			 */
		}
		else if(account_server == 1){
			/*為gmail
			 *收信，看信件標題有沒有Wanted_Account_dir.xml這個檔案
			 */
			int FoundMessage = -1;

			System.out.println("檢查有無主旨為\"" + Wanted_Account +"_dir.xml" +"\"的信件");
			FoundMessage = MailHandler.findSubject(
					MailHandler.Gmail_Imap_Server,
					MailHandler.Gmail_User_Account,
					MailHandler.Gmail_Password,
					Wanted_Account +"_dir.xml"
					);

			if(FoundMessage > -1){	//這個Wanted_Account有人用過了！
				System.out.println("有找到");
				return false;
			}
			System.out.println("沒找到。發送信件...");
			//建立空的dir.xml (寄一邽標題為Wanted_Account_dir.xml的信)
			String subject = Wanted_Account +"_dir.xml";
			String content = "";
			MailHandler.sendMail("nctunusa2011@gmail.com", subject, content);
		}
		else if(account_server == 2){
			/*為Hotmail
			*收信，看信件標題有沒有Wanted_Account_dir.xml這個檔案
			*/
			int FoundMessage = -1;
			System.out.println("檢查有無主旨為\"" + Wanted_Account +"_dir.xml" +"\"的信件");
			FoundMessage = MailHandler.findSubject(
					MailHandler.Hotmail_Pop3_Server,
					MailHandler.Hotmail_User_Account,
					MailHandler.Hotmail_Password,
					Wanted_Account +"_dir.xml"
					);

			if(FoundMessage > -1){	//這個Wanted_Account有人用過了！
				System.out.println("有找到");
				return false;
			}
			System.out.println("沒找到。發送信件...");
			//建立空的dir.xml (寄一邽標題為Wanted_Account_dir.xml的信)
			String subject = Wanted_Account +"_dir.xml";
			String content = "";
			MailHandler.sendMail("nctunusa2011@hotmail.com", subject, content);
		}
		else{
			System.out.println("***** in register *****");
			System.out.println("出現例外");
		}
		System.out.println("註冊成功");
		return true;
	}

	public void giveInstruction(String command){
		if(command.startsWith("mkdir")){
			//建資料夾
		}else if(command.startsWith("cd")){
			//切換資料夾
		}else if(command.startsWith("upload")){
			//上傳
			upload("aa.txt",WorkingDirectory);
		}else if(command.startsWith("download")){
			//下載
		}else if(command.startsWith("delete")){
			//刪除
		}else if(command.startsWith("rename")){
			//更名
		}else if(command.startsWith("mov")){
			//移動
		}

	}
	public static boolean upload(String LocalPath,String RemotePath) {
		/*upload函數功能：把LocalPath(可能是相對或絕對路徑)描述的檔案上傳，
		 * 上傳到RemotePath(使用者看到的雲端路徑)
		 */


		//取得檔案絕對路徑，用於之後存取碎片的路徑
		File beingSplitFile = new File (LocalPath);
		String FileAbsolutePath =  beingSplitFile.getAbsolutePath();

		//切割檔案
		int NumOfFrags = -1;

		//BillHandler.splitFile：假的splitFile，等曹文豪的函數。
		NumOfFrags = BillHandler.splitFile(LocalPath, "1MB");
		if(NumOfFrags == 0 || NumOfFrags == -1 ){
			System.out.println("切割檔案失敗");
			return false;
		}

		//進入碎片資料夾(Fragments Folder)，取得裡面所有碎片名稱(All_Fragments_Name)
		File Fragments_Folder = new File (LocalPath + "_fragments_tmp");
		String[] All_Fragments_Name = Fragments_Folder.list();



		for(int i = 0; i < All_Fragments_Name.length; i++) {
			//取得每一個碎片的絕對路徑，以便上傳
			String Fragment_AbsolutePath = FileAbsolutePath + "_fragments_tmp" + "\\" + All_Fragments_Name[i];
			/*這裡的seperator是用Windows的『\』，不曉得unix-like的平台，會不會有問題。*/
			System.out.println("處理檔案:" + All_Fragments_Name[i]);	//debug用。怕路徑出問題。

			//Fragment_Number：把『aa.txt_frag2』的"2"抓出來
			int Fragment_Number = Integer.parseInt(All_Fragments_Name[i].substring(All_Fragments_Name[i].length()-1));
			if( Fragment_Number %3 == 0	){		//Dropbox
				System.out.println("上傳到dropbox");
				//把(account, Fragment_Number)加入記錄。
			}
			else if( Fragment_Number %3 == 1	){ 	//Gmail
				System.out.println("上傳到Gmail(nctunusa2011@gmail.com)...");
				Gmail.upload(Fragment_AbsolutePath, "nctunusa2011@gmail.com");
				//把(nctunusa2011@gmail.com, Fragment_Number)加入記錄。
			}else{								//Hotmail
				System.out.println("上傳到Hotmail(nctunusa2011@hotmail.com)...");
				Hotmail.upload(Fragment_AbsolutePath, "nctunusa2011@hotmail.com");
				//把(nctunusa2011@hotmail.com, Fragment_Number)加入記錄。
			}
		}
		/*把『/vidio/aa.txt		(kao,[0,1,5]),(huang,[2,3,4])』
		 * 這筆碎片資訊，加到使用者的DirectoryStructure的最下面
		 * 方式：刪掉信箱中使用者的dir_xml那封信，
		 * 再重寄一封信上去。或許要寫個「refreshDirectoryStructure()」函數吧。
		 */

		return true;
	}//upload
}