/**
 * @Author:  jager
 * @Email:   lhj168os@gmail.com
 * @File:    cache
 * @Date:    2021/12/20 6:39 下午
 * @package: user
 * @Version: v1.0.0
 *
 * @Description:
 *
 */

package user

import (
	"github.com/jageros/hawox/attribute"
	"github.com/jageros/hawox/logx"
	"sync"
)

var (
	users = map[string]*User{}
	mx    sync.RWMutex
)

func LoadAllUserIntoCache() error {
	attrs, err := attribute.LoadAll("user")
	if err != nil {
		return err
	}
	mx.Lock()
	for _, attr := range attrs {
		u := &User{attr: attr}
		users[u.OpenID()] = u
	}
	mx.Unlock()
	return nil
}

func SaveAll() {
	mx.Lock()
	defer mx.Unlock()
	for _, u := range users {
		err := u.attr.Save(true)
		if err != nil {
			logx.Error(err)
		}
	}
}

func GetUser(openId string) (*User, error) {
	mx.RLock()
	u, ok := users[openId]
	mx.RUnlock()
	if ok {
		return u, nil
	}
	us, err := newUser(openId)
	if err != nil {
		return nil, err
	}
	mx.Lock()
	users[openId] = us
	mx.Unlock()
	return us, nil
}

func ForEachUser(f func(u *User) bool) {
	mx.Lock()
	defer mx.Unlock()
	for _, u := range users {
		if !f(u) {
			break
		}
	}
}

func Codes(isFund bool) []string {
	var codes = map[string]struct{}{}
	ForEachUser(func(u *User) bool {
		cds := u.Codes(isFund)
		for _, cd := range cds {
			if _, ok := codes[cd]; ok {
				continue
			}
			codes[cd] = struct{}{}
		}
		return true
	})
	var cods []string
	for code := range codes {
		cods = append(cods, code)
	}
	return cods
}