From 145da948996ceb392c9e9f9cfe92bbd90a022e7c Mon Sep 17 00:00:00 2001
From: Joel Schmid <joelschmidwitt@gmail.com>
Date: Fri, 19 Mar 2021 23:39:27 +0100
Subject: [PATCH] add weather sensor registration

---
 api/rest-api.go    | 22 ++++++++++++++++++++++
 api/weather-api.go | 13 ++++++++++++-
 go.mod             |  1 +
 go.sum             |  2 ++
 4 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/api/rest-api.go b/api/rest-api.go
index cc33a94..1ec6a48 100644
--- a/api/rest-api.go
+++ b/api/rest-api.go
@@ -7,6 +7,7 @@ import (
 	"weather-data/storage"
 	"weather-data/weathersource"
 
+	"github.com/google/uuid"
 	"github.com/gorilla/mux"
 )
 
@@ -41,6 +42,7 @@ func (api *weatherRestApi) handleRequests() *mux.Router {
 	router.HandleFunc("/randomlist", api.randomWeatherListHandler)
 	router.HandleFunc("/addData", api.addDataHandler)
 	router.HandleFunc("/getData", api.getData)
+	router.HandleFunc("/registerWeatherSensor/{name}", api.registerWeatherSensor)
 	return router
 }
 
@@ -74,6 +76,7 @@ func (api *weatherRestApi) randomWeatherListHandler(w http.ResponseWriter, r *ht
 func (api *weatherRestApi) addDataHandler(w http.ResponseWriter, r *http.Request) {
 	if r.Method != "POST" {
 		http.Error(w, "only POST-Method allowed", http.StatusMethodNotAllowed)
+		return
 	}
 
 	var data storage.WeatherData
@@ -89,6 +92,25 @@ func (api *weatherRestApi) homePageHandler(w http.ResponseWriter, r *http.Reques
 	fmt.Fprintf(w, "Welcome to the Weather API!")
 }
 
+func (api *weatherRestApi) registerWeatherSensor(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "POST" {
+		http.Error(w, "only POST-Method allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	w.Header().Add("content-type", "application/json")
+
+	vars := mux.Vars(r)
+	key := vars["name"]
+
+	registration := SensorRegistration{
+		Name: key,
+		Id:   uuid.New(),
+	}
+
+	json.NewEncoder(w).Encode(registration)
+}
+
 //AddNewWeatherDataCallback adds a new callbackMethod for incoming weather data
 func (api *weatherRestApi) AddNewWeatherDataCallback(callback weathersource.NewWeatherDataCallbackFunc) {
 	api.weatherSource.AddNewWeatherDataCallback(callback)
diff --git a/api/weather-api.go b/api/weather-api.go
index a472e4a..37c1600 100644
--- a/api/weather-api.go
+++ b/api/weather-api.go
@@ -1,6 +1,10 @@
 package api
 
-import "weather-data/weathersource"
+import (
+	"weather-data/weathersource"
+
+	"github.com/google/uuid"
+)
 
 //WeatherAPI is the common interface for different apis
 type WeatherAPI interface {
@@ -8,3 +12,10 @@ type WeatherAPI interface {
 	Close()
 	weathersource.WeatherSource
 }
+
+//SensorRegistration is the data for a new Sensorregistration
+type SensorRegistration struct {
+	Name     string
+	Id       uuid.UUID
+	Location string
+}
diff --git a/go.mod b/go.mod
index 2285679..17f72f4 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.16
 
 require (
 	github.com/eclipse/paho.mqtt.golang v1.3.2
+	github.com/google/uuid v1.2.0 // indirect
 	github.com/gorilla/mux v1.8.0
 	github.com/influxdata/influxdb-client-go/v2 v2.2.2
 )
diff --git a/go.sum b/go.sum
index d036c07..797ebcd 100644
--- a/go.sum
+++ b/go.sum
@@ -10,6 +10,8 @@ github.com/getkin/kin-openapi v0.13.0/go.mod h1:WGRs2ZMM1Q8LR1QBEwUxC6RJEfaBcD0s
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-chi/chi v4.0.2+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
 github.com/golangci/lint-1 v0.0.0-20181222135242-d2cdd8c08219/go.mod h1:/X8TswGSh1pIozq4ZwCfxS0WA5JGXguxk94ar/4c87Y=
+github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
+github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=