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/*
 * Copyright (C) 2005, The Beangle Software.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */

package org.beangle.ems.app.dao

import org.beangle.commons.io.IOs
import org.beangle.ems.app.util.AesEncryptor
import org.beangle.ems.app.{Ems, EmsApi, EmsApp}
import org.beangle.jdbc.ds.DataSourceFactory

import java.io.FileInputStream
import javax.sql.DataSource

object AppDataSourceFactory {
  def build(name: String): Option[DataSource] = {
    try {
      val dsf = new AppDataSourceFactory(name)
      dsf.init()
      Some(dsf.result)
    } catch
      case e: Exception => None
  }
}

class AppDataSourceFactory extends DataSourceFactory {

  def this(datasouceName: String) = {
    this()
    this.name = datasouceName
  }

  override def init(): Unit = {
    if (null == name) name = "default"
    if (EmsApp.getAppFile exists (file => IOs.readString(new FileInputStream(file)).contains(""))) {
      this.url = EmsApp.getAppFile.get.getCanonicalPath
    } else {
      this.url = EmsApi.getDatasourceUrl(name)
    }
    super.init()
  }

  protected override def postInit(): Unit = {
    if (password != null && password.startsWith("?")) {
      this.password = new AesEncryptor(Ems.key).decrypt(password.substring(1))
    }
  }

}