Merge pull request #129 from Open-EO/fix-128

Fix problems when authentication provider is missing #128

.gitignore

@@ -12,3 +12,5 @@
 inst/doc
 /doc/
 /Meta/
+/CRAN-RELEASE
+/cran-comments.md

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: openeo
 Type: Package
 Title: Client Interface for 'openEO' Servers
-Version: 1.2.1
+Version: 1.2.1.9000
 Authors@R: c(
         person(given="Florian", family="Lahn", email = "florian.lahn@eftas.com", role = c("aut", "cre")),
         person(given=c("Peter","James"),family = "Zellner", email="peterjames.zellner@eurac.edu",role=c("ctb")),

R/client.R

@@ -320,11 +320,13 @@ OpenEOClient <- R6Class(
         else {
           if (is.null(provider)) {
             providers = list_oidc_providers()
-            provider = providers[[1]]
-            if (is_null(provider)) {
-              message("Either a provider needs to be provided, or a username and password for basic authentication.")
-              return(invisible(self))
+
+            # if it happens to be that the oidc provider list is empty then use a more meaningful error message
+            if (length(providers) == 0) {
+              stop("OIDC provider list from 'list_oidc_providers()' is empty. Please contact the back-end provider.")
+              # 
             }
+            provider = providers[[1]]
           }
           private$loginOIDC(provider = provider, config = config)
         }