package foundation.send.mail;

import javax.mail.Address;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;

import foundation.dao.DataPackage;
import foundation.dao.PackageItem;
import foundation.data.entity.Entity;
import foundation.variant.expression.VariantExpression;
import foundation.variant.expression.VariantSegment;

public class Mail {

	private MailAction action;
	private String toAddress;
	private String body;
	
	
	public Mail(MailAction action) {
		this.action = action;
	}
	
	public void build(DataPackage dataPackage) throws Exception {
		Entity entity = dataPackage.getMasterEntity();
		
		//1. 获取收件地址
		String fieldMailAddress = action.getFieldMailAddress();
		int pos = fieldMailAddress.indexOf("__");
		if (pos > 0) {
			String itemName = fieldMailAddress.substring(0, pos);
			PackageItem packageItem = dataPackage.getItem(itemName);

			if(packageItem == null) {
				DataPackage host = dataPackage.getHost();
				host.loadOneDataFromDB();
				entity = host.getItemEntity(itemName);
				
			}else {
				entity = dataPackage.getItemEntity(itemName);
			}
			
			fieldMailAddress = fieldMailAddress.substring(pos+2);
		}
		
		toAddress = entity.getString(fieldMailAddress);
		
		if(toAddress == null) {
			toAddress = action.getFieldMailAddress();
		}
		//2. 创建邮件内容
		MailTemplate template = action.getTemplate();
		createBody(template, dataPackage);
	}

	private void createBody(MailTemplate template, DataPackage dataPackage) {
		VariantExpression content = template.getContent();
		
		for (VariantSegment variant: content) {
			String value = dataPackage.getString(variant.getName(), "");
			variant.setValue(value);
		}
		
		body = template.getContentValue();
	}

	public String getName() {
		return action.getName();
	}
	
	public String getSubject() {
		return action.getSubject();
	}
	
	public String getMailContent() {
		return body.toString();
	}

	public String getContentType() {
		return "text/html;charset=utf-8";
	}

	public Address[] getToAddress() throws AddressException {
		return new Address[]{new InternetAddress(toAddress)};
	}
	
}