feat: database user creation && readme explanation

Reviewed-on: #2

README.md

@@ -1,3 +1,8 @@
 # stereo.cat backend  
   
 written in Go, uses Gin.
+
+## database shit  
+  
+Instead of using Discord oAuth as a database, we instead use it as a login source, only using it to source a username/id, avatar data and a secure login/registration flow.  
+We store these attributes alongside stereo.cat specific attributes in our own database. There is a trade-off however: this means that avatar & username data is not updated in real-time, only when the oauth flow is executed.

internal/api/routes/auth.go

@@ -31,7 +31,17 @@ func RegisterAuthRoutes(cfg *types.StereoConfig, api *gin.RouterGroup) {
 			panic(err)
 		}
 
-		c.String(http.StatusOK, jwt)
+		res := cfg.Database.FirstOrCreate(&user)
+
+		if res.Error != nil {
+			panic(res.Error)
+		}
+
+		// TODO: redirect to dashboard
+		c.JSON(http.StatusOK, gin.H{
+			"jwt":   jwt,
+			"known": res.RowsAffected == 0,
+		})
 	})
 
 	api.GET("/auth/me", auth.JwtMiddleware(cfg.JWTSecret), func(c *gin.Context) {

internal/auth/client/client.go

@@ -8,6 +8,8 @@ import (
 	"net/http"
 	"net/url"
 	"strings"
+	"time"
+
 	"stereo.cat/backend/internal/auth"
 )
 
@@ -28,8 +30,9 @@ func New(redirectUri, clientId, clientSecret string) Client {
 }
 
 func (c Client) GetUser(t auth.TokenResponse) (auth.User, error) {
-    user := auth.User {
+	user := auth.User{
 		Blacklisted: false,
+		CreatedAt:   time.Now(),
 	}
 
 	req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("%s/%s", api, "users/@me"), nil)

internal/auth/jwt.go

@@ -1,6 +1,7 @@
 package auth
 
 import (
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"strings"
@@ -28,20 +29,35 @@ func JwtMiddleware(secret string) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		jwtSplit := strings.Split(c.GetHeader("Authorization"), " ")
 
-        if jwtSplit[0] != "Bearer" {
+		if len(jwtSplit) < 2 || jwtSplit[0] != "Bearer" {
 			invalidAuth(c)
 			return
 		}
 
 		claims, err := ValidateJWT(jwtSplit[1], secret)
-
 		if err != nil {
 			invalidAuth(c)
 			return
 		}
 
-        c.Set("claims", claims)
+		if userClaims, ok := claims["user"].(map[string]interface{}); ok {
+			userJSON, err := json.Marshal(userClaims) // Convert map to JSON
+			if err != nil {
+				invalidAuth(c)
+				return
+			}
 
+			var user User
+			err = json.Unmarshal(userJSON, &user)
+			if err != nil {
+				invalidAuth(c)
+				return
+			}
+
+			claims["user"] = user
+		}
+
+		c.Set("claims", claims)
 		c.Next()
 	}
 }