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/*
 * Copyright 2014-2024 Sayi
 *
 * 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 com.deepoove.poi.data;

/**
 * attachment file
 *
 * @author Sayi
 */
public abstract class AttachmentRenderData implements RenderData {

    private static final long serialVersionUID = 1L;

    private AttachmentType fileType;
    private PictureRenderData icon;

    public abstract byte[] readAttachmentData();

    public AttachmentType getFileType() {
        if (null != fileType) {
            return fileType;
        }
        setFileType(detectFileType());
        return fileType;
    }

    public void setFileType(AttachmentType fileType) {
        this.fileType = fileType;
    }

    public PictureRenderData getIcon() {
        return icon;
    }

    public void setIcon(PictureRenderData icon) {
        this.icon = icon;
    }

    protected String getFileSrc() {
        return null;
    }

    protected AttachmentType detectFileType() {
        AttachmentType type = AttachmentType.suggestFileType(getFileSrc());
        if (null == type) {
            type = AttachmentType.suggestFileType(readAttachmentData());
        }
        return type;
    }

}