package main

import (
	"integrity-checkin/dao"
	"integrity-checkin/data/po"
	"io"
	"os"
	"sort"
	"strconv"
)

type UserActivityWithRealName struct {
	RealName     string `json:"real_name"`
	Username     string `json:"username"`
	ActivityName string `json:"activity_name"`
	po.UserActivity
}

func main() {
	dao.Setup()
	UserActivity()
}
func UserActivity() {
	var userActivities []UserActivityWithRealName
	err := dao.DB.Raw("select u.real_name,u.username,a.name activity_name,ua.* from user_activity ua " +
		" left join users u on u.id=ua.user_id " +
		" left join activities a on a.id=ua.activity_id where u.type=1 and ua.credit!=0").Find(&userActivities).Error
	if err != nil {
		panic(err)
	}
	f, err := os.OpenFile("out.csv", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
	if err != nil {
		panic(err)
	}
	io.WriteString(f, "姓名,学号,日期,活动,图片\n")
	for _, userActivity := range userActivities {
		io.WriteString(f, userActivity.RealName+","+userActivity.Username+","+
			userActivity.Day+","+userActivity.ActivityName+","+userActivity.Files+"\n")
	}
}
func Student() {
	var userActivities []UserActivityWithRealName
	err := dao.DB.Raw("select u.real_name,u.username,ua.* from user_activity ua " +
		" left join users u on u.id=ua.user_id where u.type=1").Find(&userActivities).Error
	if err != nil {
		panic(err)
	}
	days := map[string]struct{}{}
	studentDays := map[string]map[string]int{}
	username2realName := map[string]string{}
	for _, userActivity := range userActivities {
		if _, ok := days[userActivity.Day]; !ok {
			days[userActivity.Day] = struct{}{}
		}
		if studentDays[userActivity.Username] == nil {
			studentDays[userActivity.Username] = map[string]int{}
			username2realName[userActivity.Username] = userActivity.RealName
		}
		studentDays[userActivity.Username][userActivity.Day] += userActivity.Credit
	}
	var daysArr []string
	for day := range days {
		daysArr = append(daysArr, day)
	}
	sort.Slice(daysArr, func(i, j int) bool {
		return daysArr[i] < daysArr[j]
	})
	f, err := os.OpenFile("out.csv", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
	if err != nil {
		panic(err)
	}
	io.WriteString(f, "姓名,学号")
	for _, day := range daysArr {
		io.WriteString(f, ","+day)
	}
	io.WriteString(f, "\n")
	for username, studentMap := range studentDays {
		io.WriteString(f, username2realName[username]+",")
		io.WriteString(f, username)
		for _, day := range daysArr {
			if credit, ok := studentMap[day]; ok {
				io.WriteString(f, ","+strconv.Itoa(credit))
			} else {
				io.WriteString(f, ",0")
			}
		}
		io.WriteString(f, "\n")
	}
}
func Teacher() {
	var userActivities []UserActivityWithRealName
	err := dao.DB.Raw("select u.real_name,u.username,ua.* from user_activity ua " +
		" left join users u on u.id=ua.user_id where u.type=2").Find(&userActivities).Error
	if err != nil {
		panic(err)
	}
	days := map[string]struct{}{}
	teacherDays := map[string]map[string]struct{}{}
	username2realName := map[string]string{}
	for _, userActivity := range userActivities {
		if _, ok := days[userActivity.Day]; !ok {
			days[userActivity.Day] = struct{}{}
		}
		if teacherDays[userActivity.Username] == nil {
			teacherDays[userActivity.Username] = map[string]struct{}{}
			username2realName[userActivity.Username] = userActivity.RealName
		}
		teacherDays[userActivity.Username][userActivity.Day] = struct{}{}
	}
	var daysArr []string
	for day := range days {
		daysArr = append(daysArr, day)
	}
	sort.Slice(daysArr, func(i, j int) bool {
		return daysArr[i] < daysArr[j]
	})
	f, err := os.OpenFile("out.csv", os.O_WRONLY|os.O_CREATE, 0644)
	if err != nil {
		panic(err)
	}
	io.WriteString(f, "姓名,工号")
	for _, day := range daysArr {
		io.WriteString(f, ","+day)
	}
	io.WriteString(f, "\n")
	for username, teacherMap := range teacherDays {
		io.WriteString(f, username2realName[username]+",")
		io.WriteString(f, username)
		for _, day := range daysArr {
			if _, ok := teacherMap[day]; ok {
				io.WriteString(f, ",1")
			} else {
				io.WriteString(f, ",0")
			}
		}
		io.WriteString(f, "\n")
	}
}