package com.baidu.ueditor.extend;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import com.baidu.ueditor.ActionEnter;
import com.baidu.ueditor.ConfigManager;
import com.baidu.ueditor.define.ActionMap;
import com.baidu.ueditor.define.AppInfo;
import com.baidu.ueditor.define.BaseState;
import com.baidu.ueditor.define.State;

public class UEActionEnter extends ActionEnter {

	private HttpServletRequest request = null;

	private String rootPath = null;
	private String contextPath = null;

	private String actionType = null;

	private ConfigManager configManager = null;

	private UeditorService ueditorService = null;

	public UEActionEnter(HttpServletRequest request, String rootPath, UeditorService ueditorService) {
		super(request, rootPath);
		this.request = request;
		this.rootPath = rootPath;
		this.actionType = request.getParameter("action");
		this.contextPath = request.getContextPath();
		this.configManager = ConfigManager.getInstance(this.rootPath, this.contextPath,
				request.getRequestURI().replace(request.getContextPath(), ""));
		this.ueditorService = ueditorService;

	}

	public String exec() {
		return super.exec();
	}

	public String invoke() {

		if (actionType == null || !ActionMap.mapping.containsKey(actionType)) {
			return new BaseState(false, AppInfo.INVALID_ACTION).toJSONString();
		}

		if (this.configManager == null || !this.configManager.valid()) {
			return new BaseState(false, AppInfo.CONFIG_ERROR).toJSONString();
		}

		State state = null;

		int actionCode = ActionMap.getType(this.actionType);

		Map<String, Object> conf = null;

		switch (actionCode) {

		case ActionMap.CONFIG:
			return this.configManager.getAllConfig().toString();

		case ActionMap.UPLOAD_IMAGE:
		case ActionMap.UPLOAD_SCRAWL:
		case ActionMap.UPLOAD_VIDEO:
		case ActionMap.UPLOAD_FILE:
			conf = this.configManager.getConfig(actionCode);
			state = new UEUploader(request, conf, this.ueditorService).doExec();
			break;

		case ActionMap.CATCH_IMAGE:
			conf = configManager.getConfig(actionCode);
			String[] list = this.request.getParameterValues((String) conf.get("fieldName"));
			state = new UEImageHunter(conf, this.ueditorService).capture(list);
			break;

		case ActionMap.LIST_IMAGE:
		case ActionMap.LIST_FILE:
			conf = configManager.getConfig(actionCode);
			int start = this.getStartIndex();
			state = new UEFileManager(conf, this.ueditorService).listFile(start);
			break;

		}

		return state.toJSONString();

	}

	public int getStartIndex() {

		String start = this.request.getParameter("start");

		try {
			return Integer.parseInt(start);
		} catch (Exception e) {
			return 0;
		}

	}

	/**
	 * callback参数验证
	 */
	public boolean validCallbackName(String name) {

		if (name.matches("^[a-zA-Z_]+[\\w0-9_]*$")) {
			return true;
		}

		return false;

	}

}