package com.lgs.mvpmodule.bookstore.presenter;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

import java.util.concurrent.locks.ReentrantLock;

/**
 * 保存书籍信息表
 */
public class NovelTbl extends SQLiteOpenHelper {
    private final static String DATABASE_NAME = "books.db";
    private final static int DATABASE_VERSION = 1;
    private final static String TABLE_NAME = "novels";

public final static String ID = "id";//0 id 数据库中加入此字段
    public final static String FILE_TYPE = "file_type";//1 资源名称
    public final static String FILE_NAME = "file_name";//2 中文名称
    public final static String AUTHOR = "author";// 3：作者
    public final static String TITLE = "title";//4：标题
    public final static String DESCRIBE = "describe";//5：描述

public NovelTbl(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);

}

// 创建table
    @Override
    public void onCreate(SQLiteDatabase db) {
        String sql = "CREATE TABLE " + TABLE_NAME + " (" + ID
                + " INTEGER PRIMARY KEY NOT NULL UNIQUE DEFAULT ( 0 ), " + FILE_TYPE + "  INT DEFAULT ( 1 ), "
                + FILE_NAME + " TEXT DEFAULT ( '' ), " + TITLE
                + " TEXT DEFAULT ( '' ), " + AUTHOR
                + " TEXT DEFAULT ( '' ), " + DESCRIBE + " TEXT DEFAULT ( '' ));";
        db.execSQL(sql);

//        CREATE TABLE poems (
//                id        INTEGER    PRIMARY KEY AUTOINCREMENT
//                NOT NULL,
//                file_type INT        DEFAULT (1),
//                file_name TEXT (200) NOT NULL,
//                title     TEXT (200) NOT NULL,
//                author    TEXT (50)  DEFAULT lgs,
//                describe  TEXT
//        );

}

@Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        //重建数据库，所有数据丢失
        if (oldVersion != newVersion) {
            String sql = "DROP TABLE IF EXISTS " + TABLE_NAME;
            db.execSQL(sql);
            onCreate(db);
        }
    }

public Cursor select() {
        SQLiteDatabase db = this.getReadableDatabase();
        Cursor cursor = db.query(TABLE_NAME, null, null, null, null, null, null);
        return cursor;
    }

// 增加操作
    public long insert(Integer id) {
        SQLiteDatabase db = this.getWritableDatabase();
        /* ContentValues */
        ContentValues cv = new ContentValues();
        cv.put(ID, id.toString());
        long row = db.insert(TABLE_NAME, null, cv);
        return row;

//        INSERT INTO book_info (  id ) VALUES ( 0 );
    }

public long insert(String sInfo) {
        String[] aryInfo = sInfo.split(",");
        // String name = aryInfo[0];
        if (aryInfo.length < 5)
            return -1;

SQLiteDatabase db = this.getWritableDatabase();

ContentValues cv = new ContentValues();
        cv.put(ID, Integer.valueOf(aryInfo[0]));
        cv.put(FILE_TYPE, String.valueOf(aryInfo[1]));
        cv.put(FILE_NAME, String.valueOf(aryInfo[2]));
        cv.put(TITLE, String.valueOf(aryInfo[3]));
        cv.put(AUTHOR, String.valueOf(aryInfo[4]));
        cv.put(DESCRIBE, String.valueOf(aryInfo[5]));

long row = db.insert(TABLE_NAME, null, cv);
        return row;

//INSERT INTO novels (  id,file_type,file_name,title,author,describe )
// VALUES (21722,2,"sanguo","古典名著：三国演义","元末明初：罗贯中","");

}

// 删除操作
    public void delete(Integer id) {
        SQLiteDatabase db = this.getWritableDatabase();
        String where = ID + " = ?";
        String[] whereValue = {id.toString()};
        db.delete(TABLE_NAME, where, whereValue);

// delete  from book_info;
    }

// 修改操作
    public long update(Integer id, String sInfo) {
        String[] aryInfo = sInfo.split(",");
        // String name = aryInfo[0];
        if (aryInfo.length < 4)
            return -1;

SQLiteDatabase db = this.getWritableDatabase();
        String where = ID + " = ?";
        String[] whereValue = {id.toString()};

ContentValues cv = new ContentValues();
        cv.put(ID, Integer.valueOf(aryInfo[0]));
        cv.put(FILE_TYPE, String.valueOf(aryInfo[1]));
        cv.put(FILE_NAME, String.valueOf(aryInfo[2]));
        cv.put(TITLE, String.valueOf(aryInfo[3]));
        cv.put(AUTHOR, String.valueOf(aryInfo[4]));
        cv.put(DESCRIBE, String.valueOf(aryInfo[5]));

long row = db.update(TABLE_NAME, cv, where, whereValue);
        return row;

// UPDATE novels SET id = 2131230722,file_type=2, file_name = "sanguo" , title = "古典名著：三国演义" , author = "元末明初：罗贯中" , describe = "" WHERE id = 0
    }

private final ReentrantLock mLock = new ReentrantLock(true);

public void lock() {
        mLock.lock();// 多线程安全
    }

public void unlock() {
        mLock.unlock();
    }

}

@SuppressLint("UseSparseArrays")static public boolean loadBooks(Context context) {      bookDb = new NovelTbl(context);Cursor mCursor;mCursor = bookDb.select();bookDb.lock();int count = mCursor.getCount();if (count == 0) {//数据不存在，添加图书信息bookDb.insert("2131230722,sanguo,古典名著：三国演义,元末明初：罗贯中,无");

…}bookDb.unlock();return true;}