From b104e417b7a66a299a6b56e99529de3f7239cdec Mon Sep 17 00:00:00 2001
From: Nemo D'ACREMONT <ndacremont@enseirb-matmeca.fr>
Date: Sun, 1 Jun 2025 11:28:44 +0200
Subject: [PATCH] feat: add stuff for users

---
 api/api.go              |  4 +++-
 api/messages/handler.go |  3 +++
 api/users/handler.go    | 47 +++++++++++++++++++++++++++++++++++++++++
 api/users/model.go      | 34 ++++++++++++++++++++++++++++-
 4 files changed, 86 insertions(+), 2 deletions(-)

diff --git a/api/api.go b/api/api.go
index 018ef1d..bf4de36 100644
--- a/api/api.go
+++ b/api/api.go
@@ -4,6 +4,7 @@ import (
 	"net/http"
 
 	"dacremont.xyz/learnrest/api/messages"
+	"dacremont.xyz/learnrest/api/users"
 )
 
 type Api struct {}
@@ -11,7 +12,8 @@ type Api struct {}
 func NewApi () *http.ServeMux {
 	mux := http.NewServeMux()
 
-	mux.Handle("/messages", messages.NewMessagesAPI())
+	mux.Handle("/message", messages.NewMessagesAPI())
+	mux.Handle("/user", users.NewUsersAPI())
 	mux.HandleFunc("GET /hello", func(w http.ResponseWriter, r *http.Request) {w.Write([]byte("World!"))})
 
 	return mux
diff --git a/api/messages/handler.go b/api/messages/handler.go
index 7015af3..55dcb4a 100644
--- a/api/messages/handler.go
+++ b/api/messages/handler.go
@@ -30,7 +30,10 @@ func postMessages(w http.ResponseWriter, r *http.Request) {
 	err = insertMessage(msg)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
 	}
+
+	w.Write([]byte("OK"))
 }
 
 func NewMessagesAPI() *http.ServeMux {
diff --git a/api/users/handler.go b/api/users/handler.go
index 82abcb9..f0593d5 100644
--- a/api/users/handler.go
+++ b/api/users/handler.go
@@ -1 +1,48 @@
 package users
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+func getUsers(w http.ResponseWriter, r *http.Request) {
+	users, err := getAllUsers()
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(users)
+}
+
+func postUser(w http.ResponseWriter, r *http.Request) {
+	var payload User
+	err := json.NewDecoder(r.Body).Decode(&payload)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	user := User{
+		Id: payload.Id,
+		Name: payload.Name,
+	}
+	err = insertuser(user)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	w.Write([]byte("OK"))
+}
+
+func NewUsersAPI() *http.ServeMux {
+	initUsers()
+	mux := http.NewServeMux()
+
+	mux.HandleFunc("GET /", getUsers)
+	mux.HandleFunc("POST /", postUser)
+
+	return mux
+}
diff --git a/api/users/model.go b/api/users/model.go
index e496447..c2513a1 100644
--- a/api/users/model.go
+++ b/api/users/model.go
@@ -1,7 +1,39 @@
 package users
 
+import "errors"
+
 type User struct {
-	Id uint64 `json:"id"`
+	Id int `json:"id"`
 	Name string `json:"name"`
 }
 
+var users []User
+
+func initUsers() {
+	users = make([]User, 0)
+}
+
+func getAllUsers() ([]User, error) {
+	return users, nil
+}
+
+func getUserById(id int) (User, error) {
+	if id > len(users) {
+		return User{}, errors.New("User doesn't exist")
+	}
+
+	return users[id], nil
+}
+
+func insertuser(user User) error {
+	if user.Name == "" {
+		return errors.New("A name must be specified")
+	}
+
+	newUser := User{
+		Id: len(users),
+		Name: user.Name,
+	}
+	users = append(users, newUser)
+	return nil
+}