package femmod;

import haven.Button;
import haven.Coord;
import haven.Label;
import haven.LoginScreen;
import haven.TextEntry;
import haven.Widget;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;

public class AccountsPanel extends Widget {
    public ArrayList<AccountData> accounts = new ArrayList<AccountData>();
    ArrayList<Button> buttons = new ArrayList<Button>();
    ArrayList<Button> buttonsDelete = new ArrayList<Button>();
    String fileName = "accounts.conf";
    int accountsMax = 22;
    public static boolean once = true;

    public AccountsPanel(Coord pos, Coord size, Widget parent) {
        super(pos, size, parent);

        LoadAccounts();

        // create buttons
        int count = 0;
        for (AccountData account : accounts) {
            buttons.add(new Button(new Coord(0, (count * 22)), 200, this, account.Name));
            buttonsDelete.add(new Button(new Coord(210, (count * 22)), 35, this, "x"));
            count++;
        }
    }

    public void LoadAccounts() {
        if (once) {
            LoginScreen.Instance.error("Passwords are not stored securely!");
            once = false;
        }

        try {
            FileInputStream fstream = new FileInputStream(fileName);
            InputStreamReader in = new InputStreamReader(fstream);
            BufferedReader br = new BufferedReader(in);
            String strLine;

            while ((strLine = br.readLine()) != null) {
                String[] accountRawData = strLine.split("\t");

                String name = Base64Coder.decodeString(accountRawData[0].trim());
                String pass = Base64Coder.decodeString(accountRawData[1].trim());

                AddAccount(name, pass);
            }

            br.close();
            in.close();
            fstream.close();
        } catch (Exception e) {
            LoginScreen.Instance.error(e.getMessage());
        }

        if (accounts.size() <= 0)
            LoginScreen.Instance.error("Account List is empty!");
    }

    private void SaveAccounts() {
        try {
            FileOutputStream ofstream = new FileOutputStream(fileName);
            OutputStreamWriter out = new OutputStreamWriter(ofstream);
            BufferedWriter bw = new BufferedWriter(out);

            for (AccountData account : accounts) {
                String LoginEnc = Base64Coder.encodeString(account.Name);
                String PassEnc = Base64Coder.encodeString(account.Pass);
                bw.write(LoginEnc + "\t" + PassEnc + "\n");
            }

            bw.close();
            out.close();
            ofstream.close();
        } catch (Exception e) {
            LoginScreen.Instance.error(e.getMessage());
        }
    }

    private void RemoveAccount(int id) {
        if (id < 0 || id >= accounts.size()) {
            LoginScreen.Instance.error("Incorrect Account id!");
            return;
        }

        accounts.remove(id);
        SaveAccounts();

        LoginScreen.Instance.error("");
        LoginScreen.Instance.clear();

        if (accounts.size() <= 0)
            LoginScreen.Instance.error("Account List is empty!");

    }

    private boolean AddAccount(String name, String password) {
        if (accounts.size() > accountsMax) {
            LoginScreen.Instance.error("Account List is full!");
            return false;
        }

        for (AccountData account : accounts) {
            if (account.Name.equals(name)) {
                LoginScreen.Instance.error("Account " + name + " already exits!");
                return false;
            }
        }

        if (name == null || password == null)
            return false;

        accounts.add(new AccountData(name, password));
        return true;
    }

    public void wdgmsg(Widget sender, String msg, Object... args) {
        if (msg == "accountsAdd") {
            AddAccount((String) args[0], (String) args[1]);
        }
        if (msg == "accountsAddAndSave") {
            if (AddAccount((String) args[0], (String) args[1])) {
                SaveAccounts();
                LoginScreen.Instance.error("");
                LoginScreen.Instance.clear();
            }
        } else if (buttons.contains(sender))
            super.wdgmsg("accountLogin", new Object[] { accounts.get(buttons.indexOf(sender)) });
        else if (buttonsDelete.contains(sender))
            RemoveAccount(buttonsDelete.indexOf(sender));
        else
            super.wdgmsg(sender, msg, args);
    }

    // internal classess
    public class AccountData {
        public AccountData(String name, String password) {
            Name = name;
            Pass = password;
        }

        public String Name;
        public String Pass;
    };

    public class AccountAddPanel extends Widget {
        private TextEntry accAddName = null;
        private TextEntry accAddPass = null;
        private Button accAddButton = null;

        public AccountAddPanel(Coord pos, Coord size, Widget parent) {
            super(pos, size, parent);

            new Label(new Coord(10, 10), this, "Login:");
            new Label(new Coord(10, 30), this, "Password:");
            accAddName = new TextEntry(new Coord(68, 10), new Coord(100, 18), this, "");
            accAddPass = new TextEntry(new Coord(68, 30), new Coord(100, 18), this, "");
            accAddPass.uimsg("pw", 1);
            accAddButton = new Button(new Coord(180, 20), 50, this, "Add");
        }

        public void wdgmsg(Widget sender, String msg, Object... args) {
            if (sender == accAddButton) {
                if (accAddName.text.equals("")) {
                    setfocus(accAddName);
                    LoginScreen.Instance.error("Enter Login!");
                } else if (accAddPass.text.equals("")) {
                    setfocus(accAddPass);
                    LoginScreen.Instance.error("Enter Password!");
                } else
                    super.wdgmsg("accountsAddAndSave", new Object[] { accAddName.text, accAddPass.text });
            } else
                super.wdgmsg(sender, msg, args);
        }
    }
}