initial commit

.gitignore

@@ -0,0 +1,21 @@
+# Environment variables
+.env
+
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work

README.md

@@ -1 +1,2 @@
-# csl-backend
+# csl-backend
+## Combat Surf League API

controller/home.go

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+package controller
+
+import "net/http"
+
+func Home(w http.ResponseWriter, r *http.Request) {
+	w.Write([]byte("home"))
+}

controller/login.go

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+package controller
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/robyzzz/csl-backend/utils/env"
+	"github.com/robyzzz/csl-backend/utils/store"
+	"github.com/solovev/steam_go"
+)
+
+func Login(w http.ResponseWriter, r *http.Request) {
+	opId := steam_go.NewOpenId(r)
+
+	switch opId.Mode() {
+	case "cancel":
+		http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
+	case "":
+		// redirect to steam auth
+		http.Redirect(w, r, opId.AuthUrl(), http.StatusTemporaryRedirect)
+	default:
+		// login success
+
+		// get user
+		user, err := opId.ValidateAndGetUser(env.STEAM_API_KEY)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
+
+		store.CreateSessionID(w, r, user.SteamId)
+
+		// TODO: store user info in database
+
+		w.WriteHeader(http.StatusCreated)
+		json.NewEncoder(w).Encode(user)
+	}
+}

go.mod

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+module github.com/robyzzz/csl-backend
+
+go 1.17
+
+require (
+	github.com/gorilla/mux v1.8.0
+	github.com/gorilla/sessions v1.2.1
+	github.com/solovev/steam_go v0.0.0-20170222182106-48eb5aae6c50
+
+)
+
+require (
+	github.com/gorilla/securecookie v1.1.1 // indirect
+	github.com/joho/godotenv v1.4.0 // indirect
+)

go.sum

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+github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
+github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
+github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
+github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
+github.com/gorilla/sessions v1.2.1 h1:DHd3rPN5lE3Ts3D8rKkQ8x/0kqfeNmBAaiSi+o7FsgI=
+github.com/gorilla/sessions v1.2.1/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
+github.com/joho/godotenv v1.4.0 h1:3l4+N6zfMWnkbPEXKng2o2/MR5mSwTrBih4ZEkkz1lg=
+github.com/joho/godotenv v1.4.0/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/solovev/steam_go v0.0.0-20170222182106-48eb5aae6c50 h1:5wu+B07+rk5rr6KYxYK+5fRr+m8ikSblPSgDTdrFUE4=
+github.com/solovev/steam_go v0.0.0-20170222182106-48eb5aae6c50/go.mod h1:wDBDgAJlQWhdrpQeJcw6+FZwMddaNWFUo8u8bSfzA50=

middleware/auth.go

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+package middleware
+
+import (
+	"net/http"
+
+	"github.com/robyzzz/csl-backend/utils/store"
+)
+
+// Authentication middleware called on routes that need to know if user is logged in.
+// Returns to root page if session already exists.
+// i.e usage: /login
+func IsAuthenticated(h func(w http.ResponseWriter, r *http.Request)) http.Handler {
+	next := http.HandlerFunc(h)
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if store.SessionAlreadyExists(r) {
+			http.Redirect(w, r, "/", http.StatusFound)
+			return
+		}
+
+		next.ServeHTTP(w, r)
+	})
+}

server.go

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+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+
+	"github.com/gorilla/mux"
+	"github.com/robyzzz/csl-backend/controller"
+	"github.com/robyzzz/csl-backend/middleware"
+	"github.com/robyzzz/csl-backend/utils/env"
+)
+
+var router *mux.Router
+
+func main() {
+	env.GetEnvVariables()
+
+	setupRouter()
+
+	fmt.Printf("router initialized and listening on %s\n", env.PORT)
+	log.Fatal(http.ListenAndServe(":"+env.PORT, router))
+}
+
+func setupRouter() {
+	router = mux.NewRouter()
+	router.HandleFunc("/", controller.Home)
+	router.Handle("/login", middleware.IsAuthenticated(controller.Login))
+}

utils/env/env.go

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+package env
+
+import (
+	"log"
+	"os"
+
+	"github.com/joho/godotenv"
+)
+
+var SESSION_SECRET_KEY string
+var SESSION_NAME string
+var STEAM_API_KEY string
+var PORT string
+
+func GetEnvVariables() {
+	err := godotenv.Load(".env")
+	if err != nil {
+		log.Fatalf("Error loading .env file")
+	}
+
+	SESSION_SECRET_KEY = os.Getenv("SESSION_SECRET_KEY")
+	SESSION_NAME = os.Getenv("SESSION_NAME")
+	STEAM_API_KEY = os.Getenv("STEAM_API_KEY")
+	PORT = os.Getenv("PORT")
+}

utils/store/store.go

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+package store
+
+import (
+	"net/http"
+
+	"github.com/gorilla/sessions"
+	"github.com/robyzzz/csl-backend/utils/env"
+)
+
+var Store = sessions.NewCookieStore([]byte("test"))
+
+func SessionAlreadyExists(r *http.Request) bool {
+	session, _ := Store.Get(r, env.SESSION_NAME)
+	return !session.IsNew
+}
+
+func CreateSessionID(w http.ResponseWriter, r *http.Request, value string) error {
+	session, _ := Store.Get(r, env.SESSION_NAME)
+	session.Values["session-id"] = value
+	return session.Save(r, w)
+}