package com.basic.security.dao;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.util.Pair;

import com.basic.security.base.BaseApplication;
import com.basic.security.model.Log;
import com.basic.security.model.Setting;
import com.basic.security.utils.Constants;

import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

import static android.content.Context.MODE_PRIVATE;

public class DatabaseManager {

    public static final Lock databaseLock = new ReentrantLock();
    public static final Lock databaseExecSqlLock = new ReentrantLock();
    public static Map<String, SQLiteDatabase> databaseMap = new HashMap<>();
    public static Class[] tableClasses = new Class[] {
            Setting.class,
            Log.class
    };
    public static SQLiteDatabase getDatabase() {//
        return getDatabase(Constants.databaseName);
    }

    public static void intiTables() {//
        for (Class tableClass : tableClasses) {
            String table = tableClass.getSimpleName();
            Map<String, String> columns = new HashMap<>();
            Field[] declaredFields = tableClass.getDeclaredFields();
            for (Field field : declaredFields) {
                try {
                    String fieldName = field.getName();
                    String value = (String)field.get(null);
                    if (value != null) {
                        if ("table".equals(fieldName)) {
                            table = value;
                        } else {
                            columns.put(value, value);
                        }
                    }
                } catch (Exception e) {
                    System.out.println("reflect "+e.getMessage());
                }
            }
            columns.put("id", "id");

            String createTable = "CREATE TABLE IF NOT EXISTS " + table + " (";
            for (String column : columns.keySet()) {
                createTable += column + " TEXT, ";
            }
            createTable += " PRIMARY KEY(id))";
            if (table.equals("RealTimeMetrics")) {
                createTable = createTable.replace("TEXT", "INTEGER");
                createTable = createTable.replace("id INTEGER", "id TEXT");
//                System.out.println("createTable="+createTable);
            }
            DatabaseManager.execSQL(createTable);
            String createIndex = "CREATE UNIQUE INDEX IF NOT EXISTS idx_"+table+" ON "+table+"(id)";
            DatabaseManager.execSQL(createIndex);
        }


        DatabaseManager.execSQL("CREATE TABLE IF NOT EXISTS alarm (\"matchPersonListStr\" TEXT, property TEXT, \"alarmLargePicture\" TEXT,\"alarmPerson\" TEXT,\"alarmPicture\" TEXT,\"alarmVideo\" TEXT,\"alarmTime\" TEXT,\"alarmAddress\" TEXT,\"alarmType\" TEXT,\"id\" TEXT, \"createTime\" TEXT, \"closeAlarm\" TEXT, \"mute\" TEXT, PRIMARY KEY(id))");
        try {
            DatabaseManager.execSQL("ALTER TABLE alarm ADD COLUMN imgKey text");
        } catch (Exception e) {
            e.printStackTrace();
        }
        try {
            DatabaseManager.execSQL("ALTER TABLE alarm ADD COLUMN indeviceid text");
        } catch (Exception e) {
            e.printStackTrace();
        }
        try {
            DatabaseManager.execSQL("ALTER TABLE alarm ADD COLUMN videoReqNum text");
        } catch (Exception e) {
            e.printStackTrace();
        }
        try {
            DatabaseManager.execSQL("ALTER TABLE alarm ADD COLUMN picDate text");
        } catch (Exception e) {
            e.printStackTrace();
        }
        DatabaseManager.execSQL("CREATE UNIQUE INDEX IF NOT EXISTS idx_alarm ON alarm(id)");
//        DatabaseManager.execSQL("CREATE TABLE IF NOT EXISTS setting (\"id\" TEXT, \"name\" TEXT, PRIMARY KEY(id))");
//        DatabaseManager.execSQL("CREATE UNIQUE INDEX IF NOT EXISTS idx_setting ON setting (id)");
    }

    public static SQLiteDatabase getDatabase(String databaseName) {//
        SQLiteDatabase database = databaseMap.get(databaseName);
        try {
            databaseLock.lock();
            if (database == null) {
//                database = BaseApplication.getApplication().openOrCreateDatabase(Constants.databaseName, MODE_PRIVATE, null);
                database = SQLiteDatabase.openOrCreateDatabase(databaseName, null);
                databaseMap.put(databaseName, database);
                intiTables();
                setCustomDatabaseFiles(BaseApplication.getApplication());
                initTableColumnNames();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            databaseLock.unlock();
        }
        return database;
    }

    public static void execSQL(String sql) {
        try {
            databaseExecSqlLock.lock();
            getDatabase().execSQL(sql);
        } finally {
            databaseExecSqlLock.unlock();
        }
    }

    public static void setCustomDatabaseFiles(Context context) {
        try {
            Class<?> debugDB = Class.forName("com.amitshekhar.DebugDB");
            Class[] argTypes = new Class[]{HashMap.class};
            Method setCustomDatabaseFiles = debugDB.getMethod("setCustomDatabaseFiles", argTypes);
            HashMap<String, Pair<File, String>> customDatabaseFiles = new HashMap<>();
            customDatabaseFiles.put("base_database",new Pair<>(new File(Constants.databaseName), ""));
            setCustomDatabaseFiles.invoke(null, customDatabaseFiles);
        } catch (Exception ignore) {
            ignore.printStackTrace();
        }
    }

    private static void initTableColumnNames() {//
        SQLiteDatabase mDataBase = DatabaseManager.getDatabase();
        Cursor c = mDataBase.rawQuery("SELECT name FROM sqlite_master WHERE type='table'", null);
        List<String> tableNameList = new ArrayList<>();
        if (c.moveToFirst()) {
            while (!c.isAfterLast()) {
                tableNameList.add(c.getString(0));
                c.moveToNext();
            }
        }
        c.close();
        for (String tableName : tableNameList) {
            Cursor dbCursor = mDataBase.query(tableName, null, null, null, null, null, null);
            String[] columnNames = dbCursor.getColumnNames();
            SqliteManager.tableColumnNames.put(tableName, Arrays.asList(columnNames));
            dbCursor.close();
        }
    }

}