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package top.javatool.canal.client.handler.impl;

import com.alibaba.otter.canal.protocol.CanalEntry;
import top.javatool.canal.client.factory.IModelFactory;
import top.javatool.canal.client.handler.EntryHandler;
import top.javatool.canal.client.handler.RowDataHandler;

import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * @author yang peng
 * @date 2019/3/2917:21
 */
public class RowDataHandlerImpl implements RowDataHandler {



    private IModelFactory> modelFactory;




    public RowDataHandlerImpl(IModelFactory modelFactory) {
        this.modelFactory = modelFactory;
    }

    @Override
    public  void handlerRowData(CanalEntry.RowData rowData, EntryHandler entryHandler, CanalEntry.EventType eventType) throws Exception {
        if (entryHandler != null) {
            switch (eventType) {
                case INSERT:
                    R object = modelFactory.newInstance(entryHandler, rowData.getAfterColumnsList());
                    entryHandler.insert(object);
                    break;
                case UPDATE:
                    Set updateColumnSet = rowData.getAfterColumnsList().stream().filter(CanalEntry.Column::getUpdated)
                            .map(CanalEntry.Column::getName).collect(Collectors.toSet());
                    R before = modelFactory.newInstance(entryHandler, rowData.getBeforeColumnsList(),updateColumnSet);
                    R after = modelFactory.newInstance(entryHandler, rowData.getAfterColumnsList());
                    entryHandler.update(before, after);
                    break;
                case DELETE:
                    R o = modelFactory.newInstance(entryHandler, rowData.getBeforeColumnsList());
                    entryHandler.delete(o);
                    break;
                default:
                    break;
            }
        }
    }
}