Add healthcheck & conf endpoint (#6)

## Summary
Add a healthcheck and a conf endpoint.

## Details and comments
- [x] Add healthcheck endpoint with data about API
- [x] Add conf endpoint

---
Closes #5

.pre-commit-config.yaml

@@ -6,7 +6,7 @@ repos:
       - id: trailing-whitespace
         exclude: vendor
       - id: end-of-file-fixer
-        exclude: vendor
+        exclude: cocas/VERSION.txt
   - repo: https://github.com/dnephin/pre-commit-golang
     rev: v0.4.0
     hooks:

cocas/VERSION.txt

@@ -0,0 +1 @@
+0.0.1

cocas/controller.go

@@ -8,6 +8,8 @@ import (
 	"gopkg.in/cas.v2"
 )
 
+var err error
+
 func (h *myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-type", "application/json;charset=UTF-8")
 	if !cas.IsAuthenticated(r) {
@@ -20,16 +22,20 @@ func (h *myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if r.URL.Path == "/reload" {
+	w.WriteHeader(http.StatusOK)
+
+	if r.URL.Path == "/healthcheck" {
+		err = json.NewEncoder(w).Encode(GetHealth())
+	} else if r.URL.Path == "/reload" {
 		ExternalLoadConf()
 		logger.GetLogger().LogInfo("cocas", "Reloaded conf")
-		return
+		err = json.NewEncoder(w).Encode(GalaxyUsers)
+	} else if r.URL.Path == "/conf" {
+		err = json.NewEncoder(w).Encode(GalaxyUsers)
+	} else {
+		err = json.NewEncoder(w).Encode(GetProfile(r))
 	}
 
-	esner := GetProfile(r)
-
-	w.WriteHeader(http.StatusOK)
-	err := json.NewEncoder(w).Encode(esner)
 	if err != nil {
 		logger.GetLogger().LogError("cocas", "problem with encoder.", err)
 	} else {

cocas/model.go

@@ -1,12 +1,15 @@
 package cocas
 
 import (
+	_ "embed"
 	"net/http"
 
 	"gopkg.in/cas.v2"
 )
 
-// swagger:model Profile
+//go:embed VERSION.txt
+var version_file string
+
 type Profile struct {
 	Username      string   `json:"username"`
 	First         string   `json:"firstname"`
@@ -27,6 +30,13 @@ type Profile struct {
 
 var ESNer Profile
 
+type Health struct {
+	Title   string `json:"title"`
+	Version string `json:"version"`
+	Name    string `json:"name"`
+	Message string `json:"message"`
+}
+
 func GetProfile(r *http.Request) *Profile {
 	ESNer = Profile{
 		Username:      cas.Username(r),
@@ -78,3 +88,14 @@ func GetProfile(r *http.Request) *Profile {
 
 	return &ESNer
 }
+
+func GetHealth() *Health {
+	var hea Health
+
+	hea.Title = "IT works !"
+	hea.Name = "coCAS"
+	hea.Version = string(version_file)
+	hea.Message = "Gocas is feeling connected today :)"
+
+	return &hea
+}

makefile

@@ -35,6 +35,7 @@ docker-build:
 	docker build . -f docker/Dockerfile --tag $(PROJECT_NAME):latest
 
 docker-start:
+	docker rm -f $(PROJECT_NAME) 2> /dev/null
 	docker run \
 		--name $(PROJECT_NAME) \
 		-v $(PWD)/test:/etc/$(PROJECT_PATH)/conf \