/*
 * Apple // emulator for *nix
 *
 * This software package is subject to the GNU General Public License
 * version 3 or later (your choice) as published by the Free Software
 * Foundation.
 *
 * Copyright 2015 Aaron Culliney
 *
 */

package org.deadc0de.apple2ix;

import android.util.DisplayMetrics;
import android.util.Log;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;

import java.io.File;
import java.io.FilenameFilter;
import java.util.Arrays;

import org.deadc0de.apple2ix.basic.R;

public class Apple2KeyboardSettingsMenu extends Apple2AbstractMenu {

    private final static String TAG = "KeyboardSettingsMenu";

    // These settings must match native side
    public final static int kLT = 8;
    public final static int kTAB = 9;
    public final static int kDN = 10;
    public final static int kUP = 11;
    public final static int kRET = 13;
    public final static int kRT = 21;
    public final static int kESC = 27;
    public final static int kDEL = 127;

    public final static int MOUSETEXT_BEGIN = 0x80;
    public final static int MOUSETEXT_CLOSEDAPPLE = MOUSETEXT_BEGIN/*+0x00*/;
    public final static int MOUSETEXT_OPENAPPLE = MOUSETEXT_BEGIN + 0x01;
    public final static int MOUSETEXT_LEFT = MOUSETEXT_BEGIN + 0x08;
    public final static int MOUSETEXT_UP = MOUSETEXT_BEGIN + 0x0b;
    public final static int MOUSETEXT_DOWN = MOUSETEXT_BEGIN + 0x0a;
    public final static int MOUSETEXT_RIGHT = MOUSETEXT_BEGIN + 0x15;

    public final static int ICONTEXT_BEGIN = 0xA0;
    public final static int ICONTEXT_VISUAL_SPACE = ICONTEXT_BEGIN + 0x11;
    public final static int ICONTEXT_KBD_BEGIN = ICONTEXT_BEGIN + 0x13;
    public final static int ICONTEXT_CTRL = ICONTEXT_KBD_BEGIN/* + 0x00*/;
    public final static int ICONTEXT_ESC = ICONTEXT_KBD_BEGIN + 0x09;
    public final static int ICONTEXT_RETURN = ICONTEXT_KBD_BEGIN + 0x0A;
    public final static int ICONTEXT_NONACTION = ICONTEXT_KBD_BEGIN + 0x0C;

    public final static int SCANCODE_A = 30;
    public final static int SCANCODE_C = 46;
    public final static int SCANCODE_D = 32;
    public final static int SCANCODE_E = 18;
    public final static int SCANCODE_F = 33;
    public final static int SCANCODE_H = 35;
    public final static int SCANCODE_I = 23;
    public final static int SCANCODE_J = 36;
    public final static int SCANCODE_K = 37;
    public final static int SCANCODE_L = 38;
    public final static int SCANCODE_M = 50;
    public final static int SCANCODE_N = 49;
    public final static int SCANCODE_O = 24;
    public final static int SCANCODE_P = 25;
    public final static int SCANCODE_Q = 16;
    public final static int SCANCODE_S = 31;
    public final static int SCANCODE_U = 22;
    public final static int SCANCODE_W = 17;
    public final static int SCANCODE_X = 45;
    public final static int SCANCODE_Y = 21;
    public final static int SCANCODE_Z = 44;
    public final static int SCANCODE_SPACE = 57;
    public final static int SCANCODE_SEMICOLON = 39;
    public final static int SCANCODE_UP = 103;
    public final static int SCANCODE_LEFT = 105;
    public final static int SCANCODE_RIGHT = 106;
    public final static int SCANCODE_DOWN = 108;
    public final static int SCANCODE_COMMA = 51;
    public final static int SCANCODE_PERIOD = 52;
    public final static int SCANCODE_SLASH = 53;

    public Apple2KeyboardSettingsMenu(Apple2Activity activity) {
        super(activity);
    }

    @Override
    public final String[] allTitles() {
        return SETTINGS.titles(mActivity);
    }

    @Override
    public final IMenuEnum[] allValues() {
        return SETTINGS.values();
    }

    @Override
    public final boolean areAllItemsEnabled() {
        return true;
    }

    @Override
    public final boolean isEnabled(int position) {
        if (position < 0 || position >= SETTINGS.size) {
            throw new ArrayIndexOutOfBoundsException();
        }
        return (position != SETTINGS.KEYBOARD_VISIBILITY_INACTIVE.ordinal() && position != SETTINGS.KEYBOARD_VISIBILITY_ACTIVE.ordinal());
    }

    protected enum SETTINGS implements Apple2AbstractMenu.IMenuEnum {
        TOUCH_MENU_ENABLED {
            @Override
            public final String getTitle(Apple2Activity activity) {
                return activity.getResources().getString(R.string.touch_menu_enable);
            }

            @Override
            public final String getSummary(Apple2Activity activity) {
                return activity.getResources().getString(R.string.touch_menu_enable_summary);
            }

            @Override
            public String getPrefDomain() {
                return Apple2Preferences.PREF_DOMAIN_KEYBOARD;
            }

            @Override
            public String getPrefKey() {
                return "touchMenuEnabled";
            }

            @Override
            public Object getPrefDefault() {
                return true;
            }

            @Override
            public View getView(final Apple2Activity activity, View convertView) {
                final IMenuEnum self = this;
                convertView = _basicView(activity, this, convertView);
                CheckBox cb = _addCheckbox(activity, this, convertView, (boolean) Apple2Preferences.getJSONPref(this));
                cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        Apple2Preferences.setJSONPref(self, isChecked);
                    }
                });
                return convertView;
            }
        },
        KEYBOARD_CHOOSE_ALT {
            @Override
            public final String getTitle(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_choose_alt);
            }

            @Override
            public final String getSummary(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_choose_alt_summary);
            }

            @Override
            public String getPrefKey() {
                return "altPathIndex";
            }

            @Override
            public Object getPrefDefault() {
                return 0;
            }

            @Override
            public final View getView(final Apple2Activity activity, View convertView) {
                convertView = _basicView(activity, this, convertView);
                _addPopupIcon(activity, this, convertView);
                return convertView;
            }

            @Override
            public void handleSelection(final Apple2Activity activity, final Apple2AbstractMenu settingsMenu, boolean isChecked) {

                File extKeyboardDir = Apple2Utils.getExternalStorageDirectory(activity);

                FilenameFilter kbdJsonFilter = new FilenameFilter() {
                    public boolean accept(File dir, String name) {
                        File file = new File(dir, name);
                        if (file.isDirectory()) {
                            return false;
                        }

                        // check file extensions ... sigh ... no String.endsWithIgnoreCase() ?

                        final String extension = ".kbd.json";
                        final int nameLen = name.length();
                        final int extLen = extension.length();
                        if (nameLen <= extLen) {
                            return false;
                        }

                        String suffix = name.substring(nameLen - extLen, nameLen);
                        return (suffix.equalsIgnoreCase(extension));
                    }
                };

                File[] files = null;
                if (extKeyboardDir != null) {
                    files = extKeyboardDir.listFiles(kbdJsonFilter);
                }
                if (files == null) {
                    // read keyboard data from /data/data/...
                    File keyboardDir = new File(Apple2Utils.getDataDir(activity) + File.separator + "keyboards");
                    files = keyboardDir.listFiles(kbdJsonFilter);
                    if (files == null) {
                        Apple2Activity.logMessage(Apple2Activity.LogType.ERROR, TAG, "OOPS, could not read keyboard data directory");
                        return;
                    }
                }

                Arrays.sort(files);

                final File[] allFiles = files;
                String[] titles = new String[allFiles.length];
                int idx = 0;
                for (File file : allFiles) {
                    titles[idx] = file.getName();
                    ++idx;
                }

                final String keyboardDirName = extKeyboardDir == null ? "Keyboards" : extKeyboardDir.getPath();

                final IMenuEnum self = this;
                _alertDialogHandleSelection(activity, keyboardDirName, titles, new IPreferenceLoadSave() {
                    @Override
                    public int intValue() {
                        return (int) Apple2Preferences.getJSONPref(self);
                    }

                    @Override
                    public void saveInt(int value) {
                        Apple2Preferences.setJSONPref(self, value);
                        String path = allFiles[value].getPath();
                        Apple2Preferences.setJSONPref(Apple2Preferences.PREF_DOMAIN_KEYBOARD, "altPath", path);
                    }
                });
            }
        },
        KEYBOARD_VISIBILITY_INACTIVE {
            @Override
            public final String getTitle(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_visibility_inactive);
            }

            @Override
            public final String getSummary(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_visibility_inactive_summary);
            }

            @Override
            public String getPrefKey() {
                return "minAlpha";
            }

            @Override
            public Object getPrefDefault() {
                return (float) 5 / Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES;
            }

            @Override
            public View getView(final Apple2Activity activity, View convertView) {
                final IMenuEnum self = this;
                return _sliderView(activity, this, Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES, new IPreferenceSlider() {
                    @Override
                    public void saveInt(int progress) {
                        Apple2Preferences.setJSONPref(self, (float) progress / Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES);
                    }

                    @Override
                    public int intValue() {
                        return Math.round(Apple2Preferences.getFloatJSONPref(self) * (Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES));
                    }

                    @Override
                    public void showValue(int progress, final TextView seekBarValue) {
                        seekBarValue.setText("" + ((float) progress / Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES));
                    }
                });
            }
        },
        KEYBOARD_VISIBILITY_ACTIVE {
            @Override
            public final String getTitle(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_visibility_active);
            }

            @Override
            public final String getSummary(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_visibility_active_summary);
            }

            @Override
            public String getPrefKey() {
                return "maxAlpha";
            }

            @Override
            public Object getPrefDefault() {
                return 1.f;
            }

            @Override
            public View getView(final Apple2Activity activity, View convertView) {
                final IMenuEnum self = this;
                return _sliderView(activity, this, Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES, new IPreferenceSlider() {
                    @Override
                    public void saveInt(int progress) {
                        Apple2Preferences.setJSONPref(self, (float) progress / Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES);
                    }

                    @Override
                    public int intValue() {
                        return Math.round(Apple2Preferences.getFloatJSONPref(self) * (Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES));
                    }

                    @Override
                    public void showValue(int progress, final TextView seekBarValue) {
                        seekBarValue.setText("" + ((float) progress / Apple2Preferences.ALPHA_SLIDER_NUM_CHOICES));
                    }
                });
            }
        },
        KEYBOARD_ENABLE_CLICK {
            @Override
            public final String getTitle(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_click_enabled);
            }

            @Override
            public final String getSummary(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_click_enabled_summary);
            }

            @Override
            public String getPrefKey() {
                return "keyClickEnabled";
            }

            @Override
            public Object getPrefDefault() {
                return true;
            }

            @Override
            public View getView(final Apple2Activity activity, View convertView) {
                convertView = _basicView(activity, this, convertView);
                CheckBox cb = _addCheckbox(activity, this, convertView, (boolean) Apple2Preferences.getJSONPref(this));
                final IMenuEnum self = this;
                cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        Apple2Preferences.setJSONPref(self, isChecked);
                    }
                });
                return convertView;
            }
        },
        KEYBOARD_ENABLE_DUO_TOUCH {
            @Override
            public final String getTitle(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_duotouch_enabled);
            }

            @Override
            public final String getSummary(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_duotouch_enabled_summary);
            }

            @Override
            public String getPrefKey() {
                return "duoTouchEnabled";
            }

            @Override
            public Object getPrefDefault() {
                return false;
            }

            @Override
            public View getView(final Apple2Activity activity, View convertView) {
                convertView = _basicView(activity, this, convertView);
                CheckBox cb = _addCheckbox(activity, this, convertView, (boolean) Apple2Preferences.getJSONPref(this));
                final IMenuEnum self = this;
                cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        Apple2Preferences.setJSONPref(self, isChecked);
                    }
                });
                return convertView;
            }
        },
        KEYBOARD_ENABLE_LOWERCASE {
            @Override
            public final String getTitle(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_lowercase_enabled);
            }

            @Override
            public final String getSummary(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_lowercase_enabled_summary);
            }

            @Override
            public String getPrefKey() {
                return "lowercaseEnabled";
            }

            @Override
            public Object getPrefDefault() {
                return false;
            }

            @Override
            public View getView(final Apple2Activity activity, View convertView) {
                convertView = _basicView(activity, this, convertView);
                CheckBox cb = _addCheckbox(activity, this, convertView, (boolean) Apple2Preferences.getJSONPref(this));
                final IMenuEnum self = this;
                cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        Apple2Preferences.setJSONPref(self, isChecked);
                    }
                });
                return convertView;
            }
        },
        KEYBOARD_GLYPH_SCALE {
            @Override
            public final String getTitle(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_glyph_scale);
            }

            @Override
            public final String getSummary(Apple2Activity activity) {
                return activity.getResources().getString(R.string.keyboard_glyph_scale_summary);
            }

            @Override
            public String getPrefKey() {
                return "glyphMultiplier";
            }

            @Override
            public Object getPrefDefault() {
                return 2;
            }

            @Override
            public View getView(final Apple2Activity activity, View convertView) {
                convertView = _basicView(activity, this, convertView);
                int glyphScale = (int) Apple2Preferences.getJSONPref(this);
                if (glyphScale <= 0) {
                    glyphScale = 1;
                }
                CheckBox cb = _addCheckbox(activity, this, convertView, glyphScale > 1);
                final IMenuEnum self = this;
                cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        Apple2Preferences.setJSONPref(self, isChecked ? 2 : 1);
                    }
                });
                return convertView;
            }
        };

        public static final int size = SETTINGS.values().length;

        @Override
        public String getPrefDomain() {
            return Apple2Preferences.PREF_DOMAIN_KEYBOARD;
        }

        @Override
        public String getPrefKey() {
            return null;
        }

        @Override
        public Object getPrefDefault() {
            return null;
        }

        @Override
        public void handleSelection(Apple2Activity activity, Apple2AbstractMenu settingsMenu, boolean isChecked) {
        }

        @Override
        public View getView(Apple2Activity activity, View convertView) {
            return _basicView(activity, this, convertView);
        }

        public static String[] titles(Apple2Activity activity) {
            String[] titles = new String[size];
            int i = 0;
            for (SETTINGS setting : values()) {
                titles[i++] = setting.getTitle(activity);
            }
            return titles;
        }
    }
}