HomeOtherGroupTimeLineDBTask.java

package com.jasonchen.microlang.database;

import android.content.ContentValues;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.text.TextUtils;

import com.google.gson.Gson;
import com.google.gson.JsonSyntaxException;
import com.jasonchen.microlang.beans.MessageBean;
import com.jasonchen.microlang.beans.MessageListBean;
import com.jasonchen.microlang.database.table.HomeOtherGroupTable;
import com.jasonchen.microlang.debug.AppLogger;
import com.jasonchen.microlang.utils.AppConfig;

import java.util.ArrayList;
import java.util.List;

/**
 * jasonchen
 * 2015/04/21
 */
public class HomeOtherGroupTimeLineDBTask {

    private HomeOtherGroupTimeLineDBTask() {

    }

    private static SQLiteDatabase getWsd() {

        DatabaseHelper databaseHelper = DatabaseHelper.getInstance();
        return databaseHelper.getWritableDatabase();
    }

    private static SQLiteDatabase getRsd() {
        DatabaseHelper databaseHelper = DatabaseHelper.getInstance();
        return databaseHelper.getReadableDatabase();
    }

    private static void addHomeLineMsg(MessageListBean list, String accountId, String groupId) {

        if (list == null || list.getSize() == 0) {
            return;
        }

        Gson gson = new Gson();
        List<MessageBean> msgList = list.getItemList();

        DatabaseUtils.InsertHelper ih = new DatabaseUtils.InsertHelper(getWsd(),
                HomeOtherGroupTable.HomeOtherGroupDataTable.TABLE_NAME);
        final int mblogidColumn = ih.getColumnIndex(HomeOtherGroupTable.HomeOtherGroupDataTable.MBLOGID);
        final int accountidColumn = ih.getColumnIndex(HomeOtherGroupTable.HomeOtherGroupDataTable.ACCOUNTID);
        final int jsondataColumn = ih.getColumnIndex(HomeOtherGroupTable.HomeOtherGroupDataTable.JSONDATA);
        final int groupidColumn = ih.getColumnIndex(HomeOtherGroupTable.HomeOtherGroupDataTable.GROUPID);

        try {
            getWsd().beginTransaction();
            for (int i = 0; i < msgList.size(); i++) {

                MessageBean msg = msgList.get(i);
                ih.prepareForInsert();
                if (msg != null) {
                    ih.bind(mblogidColumn, msg.getId());
                    ih.bind(accountidColumn, accountId);
                    String json = gson.toJson(msg);
                    ih.bind(jsondataColumn, json);
                    ih.bind(groupidColumn, groupId);
                } else {
                    ih.bind(mblogidColumn, "-1");
                    ih.bind(accountidColumn, accountId);
                    ih.bind(jsondataColumn, "");
                    ih.bind(groupidColumn, groupId);
                }
                ih.execute();

            }
            getWsd().setTransactionSuccessful();
        } catch (SQLException e) {
        } finally {
            getWsd().endTransaction();
            ih.close();
        }
        reduceHomeOtherGroupTable(accountId, groupId);
    }

    private static void reduceHomeOtherGroupTable(String accountId, String groupId) {
        String searchCount = "select count(" + HomeOtherGroupTable.HomeOtherGroupDataTable.ID + ") as total" + " from "
                + HomeOtherGroupTable.HomeOtherGroupDataTable.TABLE_NAME + " where "
                + HomeOtherGroupTable.HomeOtherGroupDataTable.ACCOUNTID + " = "
                + accountId + " and " + HomeOtherGroupTable.HomeOtherGroupDataTable.GROUPID + " = " + groupId;
        int total = 0;
        Cursor c = getWsd().rawQuery(searchCount, null);
        if (c.moveToNext()) {
            total = c.getInt(c.getColumnIndex("total"));
        }

        c.close();

        AppLogger.e("total=" + total);

        int needDeletedNumber = total - AppConfig.DEFAULT_HOME_DB_CACHE_COUNT;

        if (needDeletedNumber > 0) {
            AppLogger.e("" + needDeletedNumber);
            String sql = " delete from " + HomeOtherGroupTable.HomeOtherGroupDataTable.TABLE_NAME + " where "
                    + HomeOtherGroupTable.HomeOtherGroupDataTable.ID
                    + " in " + "( select " + HomeOtherGroupTable.HomeOtherGroupDataTable.ID + " from "
                    + HomeOtherGroupTable.HomeOtherGroupDataTable.TABLE_NAME
                    + " where " + HomeOtherGroupTable.HomeOtherGroupDataTable.ACCOUNTID + " in " + "(" + accountId + ") "
                    + " and "
                    + HomeOtherGroupTable.HomeOtherGroupDataTable.GROUPID + " = " + groupId + " order by "
                    + HomeOtherGroupTable.HomeOtherGroupDataTable.ID
                    + " desc limit " + needDeletedNumber + " ) ";

            getWsd().execSQL(sql);
        }
    }

    public static void replace(MessageListBean list, String accountId, String groupId) {

        deleteGroupTimeLine(accountId, groupId);
        addHomeLineMsg(list, accountId, groupId);
    }

    static void deleteGroupTimeLine(String accountId, String groupId) {
        String sql = "delete from " + HomeOtherGroupTable.HomeOtherGroupDataTable.TABLE_NAME + " where "
                + HomeOtherGroupTable.HomeOtherGroupDataTable.ACCOUNTID + " in " + "(" + accountId + ")" + " and "
                + HomeOtherGroupTable.HomeOtherGroupDataTable.GROUPID + " = " + groupId;

        getWsd().execSQL(sql);
    }

    public static MessageListBean get(String accountId, String groupId, int limitCount) {
        Gson gson = new Gson();
        MessageListBean result = new MessageListBean();
        int limit = limitCount > AppConfig.DEFAULT_MSG_COUNT_50 ? limitCount : AppConfig.DEFAULT_MSG_COUNT_50;
        List<MessageBean> msgList = new ArrayList<MessageBean>();
        String sql = "select * from " + HomeOtherGroupTable.HomeOtherGroupDataTable.TABLE_NAME + " where "
                + HomeOtherGroupTable.HomeOtherGroupDataTable.ACCOUNTID + "  = " + accountId + " and "
                + HomeOtherGroupTable.HomeOtherGroupDataTable.GROUPID
                + " =  " + groupId + " order by " + HomeOtherGroupTable.HomeOtherGroupDataTable.ID + " asc limit " + limit;
        Cursor c = getRsd().rawQuery(sql, null);
        while (c.moveToNext()) {
            String json = c.getString(c.getColumnIndex(HomeOtherGroupTable.HomeOtherGroupDataTable.JSONDATA));
            if (!TextUtils.isEmpty(json)) {
                try {
                    MessageBean value = gson.fromJson(json, MessageBean.class);
                    value.getListViewSpannableString();
                    msgList.add(value);
                } catch (JsonSyntaxException e) {
                    AppLogger.e(e.getMessage());
                }

            } else {
                msgList.add(null);
            }
        }

        // delete the null flag at the head positon and the end position
        for (int i = msgList.size() - 1; i >= 0; i--) {
            if (msgList.get(i) == null) {
                msgList.remove(i);
            } else {
                break;
            }
        }

        for (int i = 0; i < msgList.size(); i++) {
            if (msgList.get(i) == null) {
                msgList.remove(i);
            } else {
                break;
            }
        }

        result.setStatuses(msgList);
        c.close();
        return result;

    }

    static void updateCount(String msgId, int commentCount, int repostCount) {
        String sql = "select * from " + HomeOtherGroupTable.HomeOtherGroupDataTable.TABLE_NAME + " where "
                + HomeOtherGroupTable.HomeOtherGroupDataTable.MBLOGID + "  = " + msgId + " order by "
                + HomeOtherGroupTable.HomeOtherGroupDataTable.ID
                + " asc limit 50";
        Cursor c = getRsd().rawQuery(sql, null);
        Gson gson = new Gson();
        while (c.moveToNext()) {
            String id = c.getString(c.getColumnIndex(HomeOtherGroupTable.HomeOtherGroupDataTable.ID));
            String json = c.getString(c.getColumnIndex(HomeOtherGroupTable.HomeOtherGroupDataTable.JSONDATA));
            if (!TextUtils.isEmpty(json)) {
                try {
                    MessageBean value = gson.fromJson(json, MessageBean.class);
                    value.setComments_count(commentCount);
                    value.setReposts_count(repostCount);
                    String[] args = {
                            id
                    };
                    ContentValues cv = new ContentValues();
                    cv.put(HomeOtherGroupTable.HomeOtherGroupDataTable.JSONDATA, gson.toJson(value));
                    getWsd().update(HomeOtherGroupTable.HomeOtherGroupDataTable.TABLE_NAME, cv,
                            HomeOtherGroupTable.HomeOtherGroupDataTable.ID + "=?", args);
                } catch (JsonSyntaxException e) {

                }

            }
        }
    }

}