/*
 * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.micode.notes.tool;

import android.content.Context;
import android.preference.PreferenceManager;

import net.micode.notes.R;
import net.micode.notes.ui.NotesPreferenceActivity;

/**
 * 资源解析工具类
 * 用于管理笔记应用中的各种资源,包括背景颜色、字体大小等
 */
public class ResourceParser {

    // 笔记背景颜色的常量定义
    public static final int YELLOW = 0;          // 黄色
    public static final int BLUE = 1;            // 蓝色  
    public static final int WHITE = 2;           // 白色
    public static final int GREEN = 3;           // 绿色
    public static final int RED = 4;             // 红色

    // 默认背景颜色为黄色
    public static final int BG_DEFAULT_COLOR = YELLOW;

    // 字体大小的常量定义
    public static final int TEXT_SMALL = 0;      // 小号字体
    public static final int TEXT_MEDIUM = 1;     // 中号字体
    public static final int TEXT_LARGE = 2;      // 大号字体
    public static final int TEXT_SUPER = 3;      // 特大号字体

    // 默认字体大小为中号
    public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM;

    /**
     * 笔记背景资源管理内部类
     * 管理编辑界面和标题栏的背景资源
     */
    public static class NoteBgResources {
        // 编辑界面的背景资源数组
        private final static int[] BG_EDIT_RESOURCES = new int[]{
                R.drawable.edit_yellow,
                R.drawable.edit_blue,
                R.drawable.edit_white,
                R.drawable.edit_green,
                R.drawable.edit_red
        };

        // 标题栏的背景资源数组
        private final static int[] BG_EDIT_TITLE_RESOURCES = new int[]{
                R.drawable.edit_title_yellow,
                R.drawable.edit_title_blue,
                R.drawable.edit_title_white,
                R.drawable.edit_title_green,
                R.drawable.edit_title_red
        };

        /**
         * 获取笔记编辑界面的背景资源
         * @param id 背景颜色ID
         * @return 对应的背景资源ID
         */
        public static int getNoteBgResource(int id) {
            return BG_EDIT_RESOURCES[id];
        }

        /**
         * 获取笔记标题栏的背景资源
         * @param id 背景颜色ID
         * @return 对应的标题栏背景资源ID
         */
        public static int getNoteTitleBgResource(int id) {
            return BG_EDIT_TITLE_RESOURCES[id];
        }
    }

    /**
     * 获取默认的背景颜色ID
     * 如果用户设置了随机背景色,则随机返回一个颜色ID
     * 否则返回默认的黄色
     * @param context 上下文对象
     * @return 背景颜色ID
     */
    public static int getDefaultBgId(Context context) {
        if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
                NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
            return (int) (Math.random() * NoteBgResources.BG_EDIT_RESOURCES.length);
        } else {
            return BG_DEFAULT_COLOR;
        }
    }

    /**
     * 笔记列表项背景资源管理内部类
     * 管理列表中笔记项的各种背景资源
     */
    public static class NoteItemBgResources {
        // 列表第一项的背景资源
        private final static int[] BG_FIRST_RESOURCES = new int[]{
                R.drawable.list_yellow_up,
                R.drawable.list_blue_up,
                R.drawable.list_white_up,
                R.drawable.list_green_up,
                R.drawable.list_red_up
        };

        // 列表中间项的背景资源
        private final static int[] BG_NORMAL_RESOURCES = new int[]{
                R.drawable.list_yellow_middle,
                R.drawable.list_blue_middle,
                R.drawable.list_white_middle,
                R.drawable.list_green_middle,
                R.drawable.list_red_middle
        };

        // 列表最后一项的背景资源
        private final static int[] BG_LAST_RESOURCES = new int[]{
                R.drawable.list_yellow_down,
                R.drawable.list_blue_down,
                R.drawable.list_white_down,
                R.drawable.list_green_down,
                R.drawable.list_red_down,
        };

        // 列表单个项的背景资源
        private final static int[] BG_SINGLE_RESOURCES = new int[]{
                R.drawable.list_yellow_single,
                R.drawable.list_blue_single,
                R.drawable.list_white_single,
                R.drawable.list_green_single,
                R.drawable.list_red_single
        };

        /**
         * 获取列表第一项的背景资源
         */
        public static int getNoteBgFirstRes(int id) {
            return BG_FIRST_RESOURCES[id];
        }

        /**
         * 获取列表最后一项的背景资源
         */
        public static int getNoteBgLastRes(int id) {
            return BG_LAST_RESOURCES[id];
        }

        /**
         * 获取列表单个项的背景资源
         */
        public static int getNoteBgSingleRes(int id) {
            return BG_SINGLE_RESOURCES[id];
        }

        /**
         * 获取列表中间项的背景资源
         */
        public static int getNoteBgNormalRes(int id) {
            return BG_NORMAL_RESOURCES[id];
        }

        /**
         * 获取文件夹的背景资源
         */
        public static int getFolderBgRes() {
            return R.drawable.list_folder;
        }
    }

    /**
     * Widget小部件背景资源管理内部类
     * 管理2x和4x大小Widget的背景资源
     */
    public static class WidgetBgResources {
        // 2x大小Widget的背景资源
        private final static int[] BG_2X_RESOURCES = new int[]{
                R.drawable.widget_2x_yellow,
                R.drawable.widget_2x_blue,
                R.drawable.widget_2x_white,
                R.drawable.widget_2x_green,
                R.drawable.widget_2x_red,
        };

        /**
         * 获取2x大小Widget的背景资源
         */
        public static int getWidget2xBgResource(int id) {
            return BG_2X_RESOURCES[id];
        }

        // 4x大小Widget的背景资源
        private final static int[] BG_4X_RESOURCES = new int[]{
                R.drawable.widget_4x_yellow,
                R.drawable.widget_4x_blue,
                R.drawable.widget_4x_white,
                R.drawable.widget_4x_green,
                R.drawable.widget_4x_red
        };

        /**
         * 获取4x大小Widget的背景资源
         */
        public static int getWidget4xBgResource(int id) {
            return BG_4X_RESOURCES[id];
        }
    }

    /**
     * 文本外观资源管理内部类
     * 管理不同大小的文本样式资源
     */
    public static class TextAppearanceResources {
        // 文本外观资源数组
        private final static int[] TEXTAPPEARANCE_RESOURCES = new int[]{
                R.style.TextAppearanceNormal,
                R.style.TextAppearanceMedium,
                R.style.TextAppearanceLarge,
                R.style.TextAppearanceSuper
        };

        /**
         * 获取文本外观资源
         * @param id 字体大小ID
         * @return 对应的文本样式资源ID
         */
        public static int getTexAppearanceResource(int id) {
            /**
             * HACKME: 修复在SharedPreference中存储资源ID的bug
             * 如果ID大于等于资源数组长度,返回默认字体大小
             */
            if (id >= TEXTAPPEARANCE_RESOURCES.length) {
                return BG_DEFAULT_FONT_SIZE;
            }
            return TEXTAPPEARANCE_RESOURCES[id];
        }

        /**
         * 获取文本外观资源的总数
         */
        public static int getResourcesSize() {
            return TEXTAPPEARANCE_RESOURCES.length;
        }
    }
}
