package com.yssh.service;

import com.yssh.mapper.QxshMapper;
import com.yssh.utils.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.*;

@Service
public class EmailService {
    @Value("${email.userName}")
    private String userName;

    @Value("${email.password}")
    private String password;

    @Value("${email.smtpHost}")
    private String smtpHost;

    @Value("${email.smtpPort}")
    private String smtpPort;

    @Value("${email.smtpAuth}")
    private String smtpAuth;

    @Value("${email.smtpTls}")
    private String smtpTls;

    @Value("${email.from}")
    private String from;

    @Value("${email.to}")
    private String to;

    @Value("${email.cc}")
    private String cc;

    @Value("${csv.bigPath}")
    private String bigPath;

    @Value("${csv.filePath}")
    private String filePath;

    @Value("${csv.vocPath}")
    private String vocPath;

    @Value("${email.hours}")
    private Integer hours;

    @Value("${email.names}")
    private String names;

    @Value("${email.title}")
    private String title;

    @Value("${email.enable}")
    private Boolean enable;

    @Value("${email.debug}")
    private Boolean debug;

    @Resource
    private QxshMapper qxshMapper;

    private static boolean isBusy = false;

    private final static SimpleDateFormat YMDH = new SimpleDateFormat("yyyyMMddHH");

    private final static SimpleDateFormat Y_M_D_H = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    protected final Logger logger = LoggerFactory.getLogger(this.getClass());

    public Session createSession() {
        Properties props = new Properties();

        // 126—smtp.126.com，163—smtp.163.com，qq-smtp.qq.com"
        props.put("mail.smtp.host", smtpHost);
        props.put("mail.smtp.port", smtpPort);
        props.put("mail.smtp.auth", smtpAuth);
        props.put("mail.smtp.starttls.enale", smtpTls);

        Session session = Session.getInstance(props, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(userName, password);
            }
        });

        session.setDebug(debug);

        return session;
    }

    public Boolean send(String title, String text) {
        try {
            if (!enable) {
                return null;
            }

            Session session = createSession();

            MimeMessage message = new MimeMessage(session);
            message.setSubject(title);
            message.setText(text);
            message.setFrom(new InternetAddress(from));
            message.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress(to));
            //message.setRecipients(Message.RecipientType.CC, new InternetAddress[] {new  InternetAddress("抄送人邮箱")});
            if (!StringUtils.isEmpty(cc)) {
                String[] strs = cc.split(",");
                InternetAddress[] ias = new InternetAddress[strs.length];
                for (int i = 0, c = strs.length; i < c; i++) {
                    ias[i] = new InternetAddress(strs[i]);
                }
                message.setRecipients(Message.RecipientType.CC, ias);
            }

            Transport.send(message);

            return true;
        } catch (Exception ex) {
            logger.error(ex.getMessage(), ex);
            return false;
        }
    }

    public Integer calcData() {
        try {
            if (isBusy) {
                return null;
            }

            isBusy = true;
            List<String> list = new ArrayList<>();
            calcCsvData(list);
            calcDbData(list);

            int size = list.size();
            if (size > 0) {
                String text = String.join("、", list.toArray(new String[list.size()])) + "，近" + hours + "小时内存在数据缺失。";
                send(title, text);
            }
            isBusy = false;

            return size;
        } catch (Exception ex) {
            logger.error(ex.getMessage(), ex);
            isBusy = false;
            return null;
        }
    }

    private void calcCsvData(List<String> list) {
        String[] strs = names.split(",");
        int count = countCsv(bigPath, hours);
        if (0 == count) {
            list.add(strs[0]);
        }
        count = countCsv(filePath, hours);
        if (0 == count) {
            list.add(strs[1]);
        }
        count = countCsv(vocPath, hours);
        if (0 == count) {
            list.add(strs[2]);
        }
    }

    private void calcDbData(List<String> list) {
        Calendar calendar = getCalendar(0);
        Integer iEnd = Integer.parseInt(YMDH.format(calendar.getTime()));
        String sEnd = Y_M_D_H.format(calendar.getTime());
        calendar.add(Calendar.HOUR, 1 - hours);
        Integer iStart = Integer.parseInt(YMDH.format(calendar.getTime()));
        String sStart = Y_M_D_H.format(calendar.getTime());

        String[] strs = names.split(",");
        int count = qxshMapper.countGcsjByTime(iStart, iEnd);
        if (0 == count) {
            list.add(strs[3]);
        }
        count = qxshMapper.countQxshByTime(iStart, iEnd);
        if (0 == count) {
            list.add(strs[4]);
        }
        count = qxshMapper.countSuYuan46ByTime(sStart, sEnd);
        if (0 == count) {
            list.add(strs[5]);
        }
        count = qxshMapper.countSuYuan70ByTime(sStart, sEnd);
        if (0 == count) {
            list.add(strs[6]);
        }
        count = qxshMapper.countSuYuanFastByTime(sStart, sEnd);
        if (0 == count) {
            list.add(strs[7]);
        }
    }

    public int countCsv(String path, Integer hours) {
        try {
            int count = 0;
            Calendar calendar = getCalendar(1);
            for (int i = 0; i < hours; i++) {
                calendar.add(Calendar.HOUR, -1);
                String filePath = path + File.separator + YMDH.format(calendar.getTime()) + ".csv";
                if (new File(filePath).exists()) {
                    count++;
                }
            }

            return count;
        } catch (Exception ex) {
            logger.error(ex.getMessage(), ex);
            return 0;
        }
    }

    public Calendar getCalendar(int start) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(new Date());
        calendar.add(Calendar.HOUR, start);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);

        return calendar;
    }
}