Add Users infos and gender registration

shared/users.go

@@ -0,0 +1,82 @@
+/*
+* @Author: Bartuccio Antoine
+* @Date:   2018-07-24 14:41:03
+* @Last Modified by:   klmp200
+* @Last Modified time: 2018-07-24 15:23:06
+ */
+
+package shared
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"sync"
+)
+
+type users struct {
+	mutex sync.Mutex
+	data  map[int]map[string]string
+}
+
+type usersFile struct {
+	mutex sync.Mutex
+	path  string
+}
+
+var Users users
+var uf usersFile
+
+func InitUsers(users_file_path string) {
+	uf = usersFile{}
+	uf.path = users_file_path
+	Users = users{}
+	Users.mutex.Lock()
+	defer Users.mutex.Unlock()
+	Users.data = make(map[int]map[string]string)
+	uf.read()
+}
+
+// Get an info about a given user
+func (u users) Get(id int, key string) (string, bool) {
+	u.mutex.Lock()
+	defer u.mutex.Unlock()
+	user, exists := u.data[id]
+	if !exists {
+		return "", false
+	}
+	if _, exists = user[key]; !exists {
+		return "", false
+	}
+	return user[key], true
+}
+
+// Add an info about a given user
+func (u users) Set(id int, key, data string) {
+	u.mutex.Lock()
+	defer u.mutex.Unlock()
+	if _, exists := u.data[id]; !exists {
+		u.data[id] = make(map[string]string)
+	}
+	u.data[id][key] = data
+	go uf.write()
+}
+
+func (u usersFile) read() {
+	u.mutex.Lock()
+	defer u.mutex.Unlock()
+	data, err := ioutil.ReadFile(u.path)
+	if err != nil {
+		// File doesn't exist, skip import
+		return
+	}
+	json.Unmarshal(data, &Users.data)
+}
+
+func (u usersFile) write() {
+	u.mutex.Lock()
+	defer u.mutex.Unlock()
+	Users.mutex.Lock()
+	defer Users.mutex.Unlock()
+	data, _ := json.Marshal(Users.data)
+	ioutil.WriteFile(u.path, data, 0770)
+}