/*
Copyright 2010 MCSharp team (Modified for use with MCZall/MCLawl/MCGalaxy)
Dual-licensed under the Educational Community License, Version 2.0 and
the GNU General Public License, Version 3 (the "Licenses"); you may
not use this file except in compliance with the Licenses. You may
obtain a copy of the Licenses at
http://www.opensource.org/licenses/ecl2.php
http://www.gnu.org/licenses/gpl-3.0.html
Unless required by applicable law or agreed to in writing,
software distributed under the Licenses are distributed on an "AS IS"
BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
or implied. See the Licenses for the specific language governing
permissions and limitations under the Licenses.
 */
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using MCGalaxy.Commands;
using MCGalaxy.Gui.Popups;

namespace MCGalaxy.Gui {
    public partial class PropertyWindow : Form {
        
        bool commandSupressEvents = true;
        ComboBox[] commandAllowBoxes, commandDisallowBoxes;
        // need to keep a list of changed command perms, because we don't want
        // to modify the server's live permissions if user clicks 'discard'
        CommandPerms commandPermsOrig, commandPerms;
        List<CommandPerms> commandPermsChanged = new List<CommandPerms>();
        List<CommandExtraPerms> commandExtraPermsChanged = new List<CommandExtraPerms>();
        string commandName;
        
        void LoadCommands() {
            cmd_list.Items.Clear();
            List<CommandPerms> temp = CommandPerms.CopyAll();
            temp.Sort((a, b) => a.CmdName.CompareTo(b.CmdName));
            
            foreach (CommandPerms perms in temp) {
                cmd_list.Items.Add(perms.CmdName);
            }

            if (cmd_list.SelectedIndex == -1)
                cmd_list.SelectedIndex = 0;
        }
        
        void SaveCommands() {
            if (!CommandsChanged()) { LoadCommands(); return; }
            
            foreach (CommandPerms changed in commandPermsChanged) {
                CommandPerms.Set(changed.CmdName, changed.MinRank,
                                 changed.Allowed, changed.Disallowed);
            }
            CommandPerms.Save();
            CommandPerms.Load();
            LoadCommands();
        }
        
        bool CommandsChanged() {
            return commandPermsChanged.Count > 0;
        }
        
        
        void cmd_list_SelectedIndexChanged(object sender, EventArgs e) {
            commandName = cmd_list.SelectedItem.ToString();
            commandPermsOrig = CommandPerms.Find(commandName);
            commandPerms = commandPermsChanged.Find(p => p.CmdName == commandName);
            CommandInitSpecificArrays();

            commandSupressEvents = true;
            GuiPerms.SetDefaultIndex(cmd_cmbMin, commandPermsOrig.MinRank);
            GuiPerms.SetSpecificPerms(commandPermsOrig.Allowed, commandAllowBoxes);
            GuiPerms.SetSpecificPerms(commandPermsOrig.Disallowed, commandDisallowBoxes);
            commandSupressEvents = false;
        }
        
        void CommandInitSpecificArrays() {
            if (commandAllowBoxes != null) return;
            commandAllowBoxes = new ComboBox[] { cmd_cmbAlw1, cmd_cmbAlw2, cmd_cmbAlw3 };
            commandDisallowBoxes = new ComboBox[] { cmd_cmbDis1, cmd_cmbDis2, cmd_cmbDis3 };
            GuiPerms.FillRanks(commandAllowBoxes);
            GuiPerms.FillRanks(commandDisallowBoxes);
        }
        
        void CommandGetOrAddPermsChanged() {
            if (commandPerms != null) return;
            commandPerms = commandPermsOrig.Copy();
            commandPermsChanged.Add(commandPerms);
        }
        
        
        void cmd_cmbMin_SelectedIndexChanged(object sender, EventArgs e) {
            int idx = cmd_cmbMin.SelectedIndex;
            if (idx == -1 || commandSupressEvents) return;
            CommandGetOrAddPermsChanged();
            
            commandPerms.MinRank = GuiPerms.RankPerms[idx];
        }
        
        void cmd_cmbSpecific_SelectedIndexChanged(object sender, EventArgs e) {
            ComboBox box = (ComboBox)sender;
            if (commandSupressEvents) return;
            int idx = box.SelectedIndex;
            if (idx == -1) return;
            CommandGetOrAddPermsChanged();
            
            List<LevelPermission> perms = commandPerms.Allowed;
            ComboBox[] boxes = commandAllowBoxes;
            int boxIdx = Array.IndexOf<ComboBox>(boxes, box);
            if (boxIdx == -1) {
                perms = commandPerms.Disallowed;
                boxes = commandDisallowBoxes;
                boxIdx = Array.IndexOf<ComboBox>(boxes, box);
            }
            
            if (idx == box.Items.Count - 1) {
                if (boxIdx >= perms.Count) return;
                perms.RemoveAt(boxIdx);
                
                commandSupressEvents = true;
                GuiPerms.SetSpecificPerms(perms, boxes);
                commandSupressEvents = false;
            } else {
                GuiPerms.SetSpecific(boxes, boxIdx, perms, idx);
            }
        }
        
        void cmd_btnHelp_Click(object sender, EventArgs e) {
            getHelp(cmd_list.SelectedItem.ToString());
        }
        
        void cmd_btnCustom_Click(object sender, EventArgs e) {
            using (CustomCommands form = new CustomCommands()) {
                form.ShowDialog();
            }
        }
    }
}