Added role based authentication

src/main/kotlin/Application.kt

@@ -16,7 +16,7 @@ import io.ktor.server.response.respond
 import kotlinx.serialization.json.Json
 
 fun main(args: Array<String>) {
-    embeddedServer(Netty, port = 8080) {
+    embeddedServer(Netty, host = "127.0.0.1", port = 8080) {
         install(CORS) {
             anyHost()
             allowHeader(HttpHeaders.ContentType)
@@ -39,7 +39,7 @@ fun Application.module() {
     }
 
     install(Authentication) {
-        jwt("auth-jwt") {
+        jwt("general") {
             realm = myRealm
             verifier(
                 JWT
@@ -55,7 +55,45 @@ fun Application.module() {
                 }
             }
             challenge { defaultScheme, realm ->
-                call.respond(HttpStatusCode.Unauthorized, "${defaultScheme}, $realm Token is not valid or has expired")
+                call.respond(HttpStatusCode.Unauthorized, "$defaultScheme, $realm Token is not valid or has expired")
+            }
+        }
+        jwt("patron"){
+            realm = myRealm
+            verifier(
+                JWT
+                    .require(Algorithm.HMAC256(secret))
+                    .withAudience(audience)
+                    .withIssuer(issuer)
+                    .build())
+            validate { credential ->
+                if (credential.payload.getClaim("role").asString() != "patron") {
+                    JWTPrincipal(credential.payload)
+                } else {
+                    null
+                }
+            }
+            challenge { _, _ ->
+                call.respond(HttpStatusCode.Unauthorized, "Insufficient permissions to access this resource.")
+            }
+        }
+        jwt("staff"){
+            realm = myRealm
+            verifier(
+                JWT
+                    .require(Algorithm.HMAC256(secret))
+                    .withAudience(audience)
+                    .withIssuer(issuer)
+                    .build())
+            validate { credential ->
+                if (credential.payload.getClaim("role").asString() != "staff") {
+                    JWTPrincipal(credential.payload)
+                } else {
+                    null
+                }
+            }
+            challenge { _, _ ->
+                call.respond(HttpStatusCode.Unauthorized, "Insufficient permissions to access this resource.")
             }
         }
     }