Make the owner field auto-discoverable

1. `doFillRepoOwnerItems` method:
   * fetches all accessible repositories using `c.fetchCurrentUserRepositories()`
   * extracts unique owner names from the repositories
   * returns them as a ListBoxModel for the dropdown
   * maintains the current selection if it's valid
2. `owner` field in the UI is changed from `textbox` to `select` with the right dependencies.

Signed-off-by: Nikita Vakula <[email protected]>

Author: krjakbrjak

src/main/java/org/jenkinsci/plugin/gitea/GiteaOwnerListHelper.java

@@ -0,0 +1,58 @@
+package org.jenkinsci.plugin.gitea;
+
+import hudson.util.ListBoxModel;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import org.jenkinsci.plugin.gitea.client.api.GiteaRepository;
+
+/**
+ * Utility class for returning unique Gitea repository owners.
+ */
+public class GiteaOwnerListHelper {
+    /**
+     * Retrieves unique repository owners from the given list of repositories.
+     *
+     * @param currentUser the Gitea user used for fetching the repositories
+     * @param repositories the list of repositories to extract owners from
+     * @return a Set of unique owner names
+     */
+    public static Set<String> getOwners(String currentUser,
+                                        List<GiteaRepository> repositories) {
+        Set<String> owners = new HashSet<>();
+
+        for (GiteaRepository repo : repositories) {
+            String owner = repo.getOwner().getUsername();
+            owners.add(owner); // Set will handle duplicates
+        }
+
+        owners.add(currentUser); // Ensure current user is included
+
+        return owners;
+    }
+
+    /**
+     * Returns a ListBoxModel with repository owners.
+     *
+     * @param currentUser the Gitea user used for fetching the repositories
+     * @param currentOwner the currently selected owner (will be preserved if valid)
+     * @param repositories the list of repositories to extract owners from
+     * @return the populated ListBoxModel
+     */
+    public static ListBoxModel populateOwnerListBoxModel(String currentUser,
+                                        String currentOwner,
+                                        List<GiteaRepository> repositories) {
+        ListBoxModel result = new ListBoxModel();
+        Set<String> owners = getOwners(currentUser, repositories);
+        // Add owners to the result, with current selection first if it exists
+        if (owners.remove(currentOwner)) {
+            result.add(currentOwner);
+        }
+
+        for (String owner : owners) {
+            result.add(owner);
+        }
+
+        return result;
+    }
+}

src/main/java/org/jenkinsci/plugin/gitea/GiteaSCMNavigator.java

@@ -51,6 +51,8 @@
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import jenkins.authentication.tokens.api.AuthenticationTokens;
 import jenkins.model.Jenkins;
 import jenkins.plugins.git.traits.GitBrowserSCMSourceTrait;
@@ -90,6 +92,7 @@
 public class GiteaSCMNavigator extends SCMNavigator {
     private final String serverUrl;
     private final String repoOwner;
+    private static final Logger LOGGER = Logger.getLogger(GiteaSCMNavigator.class.getName());
     private String credentialsId;
     private List<SCMTrait<? extends SCMTrait<?>>> traits = new ArrayList<>();
     private GiteaOwner giteaOwner;
@@ -385,6 +388,61 @@ public FormValidation doCheckCredentialsId(@AncestorInPath SCMSourceOwner contex
             return FormValidation.ok();
         }
 
+        public ListBoxModel doFillRepoOwnerItems(@AncestorInPath SCMSourceOwner context,
+                                                 @QueryParameter String serverUrl,
+                                                 @QueryParameter String credentialsId,
+                                                 @QueryParameter String repoOwner) throws IOException,
+                InterruptedException {
+            ListBoxModel result = new ListBoxModel();
+            if (context == null) {
+                if (!Jenkins.get().hasPermission(Jenkins.ADMINISTER)) {
+                    result.add(repoOwner);
+                    return result;
+                }
+            } else {
+                if (!context.hasPermission(Item.EXTENDED_READ)
+                        && !context.hasPermission(CredentialsProvider.USE_ITEM)) {
+                    result.add(repoOwner);
+                    return result;
+                }
+            }
+            GiteaServer server = GiteaServers.get().findServer(serverUrl);
+            if (server == null) {
+                result.add(repoOwner);
+                return result;
+            }
+            StandardCredentials credentials = CredentialsMatchers.firstOrNull(
+                    CredentialsProvider.lookupCredentials(
+                            StandardCredentials.class,
+                            context,
+                            context instanceof Queue.Task
+                                    ? ((Queue.Task) context).getDefaultAuthentication()
+                                    : ACL.SYSTEM,
+                            URIRequirementBuilder.fromUri(serverUrl).build()
+                    ),
+                    CredentialsMatchers.allOf(
+                            AuthenticationTokens.matcher(GiteaAuth.class),
+                            CredentialsMatchers.withId(credentialsId)
+                    )
+            );
+            if (credentials == null) {
+                result.add(repoOwner);
+                return result;
+            }
+
+            try (GiteaConnection c = Gitea.server(serverUrl)
+                    .as(AuthenticationTokens.convert(GiteaAuth.class, credentials))
+                    .open()) {
+                List<GiteaRepository> repositories = c.fetchCurrentUserRepositories();
+                String currentUser = c.fetchCurrentUser().getUsername();
+                return GiteaOwnerListHelper.populateOwnerListBoxModel(currentUser, repoOwner, repositories);
+            } catch (IOException e) {
+                LOGGER.log(Level.FINE, "Could not populate owners", e);
+            }
+
+            return result;
+        }
+
         @NonNull
         @Override
         public String getDescription() {

src/main/java/org/jenkinsci/plugin/gitea/GiteaSCMSource.java

@@ -919,6 +919,62 @@ public FormValidation doCheckCredentialsId(@AncestorInPath SCMSourceOwner contex
             return FormValidation.ok();
         }
 
+        public ListBoxModel doFillRepoOwnerItems(@AncestorInPath SCMSourceOwner context,
+                                                 @QueryParameter String serverUrl,
+                                                 @QueryParameter String credentialsId,
+                                                 @QueryParameter String repoOwner) throws IOException,
+                InterruptedException {
+            ListBoxModel result = new ListBoxModel();
+            if (context == null) {
+                if (!Jenkins.get().hasPermission(Jenkins.ADMINISTER)) {
+                    // must have admin if you want the list without a context
+                    result.add(repoOwner);
+                    return result;
+                }
+            } else {
+                if (!context.hasPermission(Item.EXTENDED_READ)
+                        && !context.hasPermission(CredentialsProvider.USE_ITEM)) {
+                    result.add(repoOwner);
+                    return result;
+                }
+            }
+            GiteaServer server = GiteaServers.get().findServer(serverUrl);
+            if (server == null) {
+                result.add(repoOwner);
+                return result;
+            }
+            StandardCredentials credentials = CredentialsMatchers.firstOrNull(
+                    CredentialsProvider.lookupCredentials(
+                            StandardCredentials.class,
+                            context,
+                            context instanceof Queue.Task
+                                    ? ((Queue.Task) context).getDefaultAuthentication()
+                                    : ACL.SYSTEM,
+                            URIRequirementBuilder.fromUri(serverUrl).build()
+                    ),
+                    CredentialsMatchers.allOf(
+                            AuthenticationTokens.matcher(GiteaAuth.class),
+                            CredentialsMatchers.withId(credentialsId)
+                    )
+            );
+            if (credentials == null) {
+                result.add(repoOwner);
+                return result;
+            }
+
+            try (GiteaConnection c = Gitea.server(serverUrl)
+                    .as(AuthenticationTokens.convert(GiteaAuth.class, credentials))
+                    .open()) {
+                List<GiteaRepository> repositories = c.fetchCurrentUserRepositories();
+                String currentUser = c.fetchCurrentUser().getUsername();
+                return GiteaOwnerListHelper.populateOwnerListBoxModel(currentUser, repoOwner, repositories);
+            } catch (IOException e) {
+                LOGGER.log(Level.FINE, "Could not populate owners", e);
+            }
+
+            return result;
+        }
+
         public ListBoxModel doFillRepositoryItems(@AncestorInPath SCMSourceOwner context,
                                                   @QueryParameter String serverUrl,
                                                   @QueryParameter String credentialsId,

src/main/resources/org/jenkinsci/plugin/gitea/GiteaSCMNavigator/config.jelly

@@ -8,7 +8,7 @@
     <c:select/>
   </f:entry>
   <f:entry title="${%Owner}" field="repoOwner">
-    <f:textbox/>
+    <f:select fillDependsOn="serverUrl,credentialsId"/>
   </f:entry>
   <f:entry title="${%Behaviours}">
     <scm:traits field="traits"/>

src/main/resources/org/jenkinsci/plugin/gitea/GiteaSCMSource/config-detail.jelly

@@ -8,10 +8,10 @@
     <c:select/>
   </f:entry>
   <f:entry title="${%Owner}" field="repoOwner">
-    <f:textbox/>
+    <f:select fillDependsOn="serverUrl,credentialsId"/>
   </f:entry>
   <f:entry title="${%Repository}" field="repository">
-    <f:select/>
+    <f:select fillDependsOn="serverUrl,credentialsId,repoOwner"/>
   </f:entry>
   <f:entry title="${%Behaviours}">
     <scm:traits field="traits"/>

src/test/java/org/jenkinsci/plugin/gitea/GiteaOwnerListHelperTest.java

@@ -0,0 +1,112 @@
+package org.jenkinsci.plugin.gitea;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+import org.jenkinsci.plugin.gitea.client.api.GiteaOwner;
+import org.jenkinsci.plugin.gitea.client.api.GiteaRepository;
+import org.junit.jupiter.api.Test;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.anyOf;
+import static org.hamcrest.Matchers.containsInAnyOrder;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.not;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class GiteaOwnerListHelperTest {
+
+    @Test
+    void getOwners_withValidRepositories_returnsUniqueOwnersIncludingCurrentUser() {
+        List<GiteaRepository> repositories = Arrays.asList(
+                createMockRepository("alice"),
+                createMockRepository("bob"),
+                createMockRepository("alice") // duplicate
+        );
+
+        Set<String> owners = GiteaOwnerListHelper.getOwners("charlie", repositories);
+
+        assertThat(owners, containsInAnyOrder("alice", "bob", "charlie"));
+    }
+
+    @Test
+    void getOwners_withEmptyRepositories_returnsOnlyCurrentUser() {
+        List<GiteaRepository> repositories = Collections.emptyList();
+
+        Set<String> owners = GiteaOwnerListHelper.getOwners("charlie", repositories);
+
+        assertThat(owners.contains("charlie"), is(true));
+    }
+
+    @Test
+    void populateOwnerListBoxModel_withCurrentOwnerSelected_placesCurrentOwnerFirst() {
+        List<GiteaRepository> repositories = Arrays.asList(
+                createMockRepository("alice"),
+                createMockRepository("bob"));
+
+        var result = GiteaOwnerListHelper.populateOwnerListBoxModel("charlie", "bob", repositories);
+
+        assertThat(result.size(), is(3));
+        assertThat(result.get(0).name, is("bob"));
+        assertThat(result.get(1).name, anyOf(is("alice"), is("charlie")));
+        assertThat(result.get(2).name, anyOf(is("alice"), is("charlie")));
+    }
+
+    @Test
+    void populateOwnerListBoxModel_withCurrentOwnerNotInList_includesCurrentOwner() {
+        List<GiteaRepository> repositories = Arrays.asList(
+                createMockRepository("alice"));
+
+        var result = GiteaOwnerListHelper.populateOwnerListBoxModel("bob", "charlie", repositories);
+
+        assertThat(result.size(), is(2));
+        assertThat(result.stream().anyMatch(opt -> "charlie".equals(opt.name)), is(false));
+        assertThat(result.stream().anyMatch(opt -> "alice".equals(opt.name)), is(true));
+        assertThat(result.stream().anyMatch(opt -> "bob".equals(opt.name)), is(true));
+    }
+
+    @Test
+    void populateOwnerListBoxModel_selectedOwnerIsFirst_restAreUnordered() {
+        List<GiteaRepository> repositories = Arrays.asList(
+                createMockRepository("alice"),
+                createMockRepository("bob"),
+                createMockRepository("charlie")
+        );
+
+        var result = GiteaOwnerListHelper.populateOwnerListBoxModel("dave", "bob", repositories);
+
+        assertThat(result.size(), is(4));
+        assertThat(result.get(0).name, is("bob")); // selected owner first
+
+        // The rest should be alice, charlie, dave in any order
+        List<String> rest = Arrays.asList(result.get(1).name, result.get(2).name, result.get(3).name);
+        assertThat(rest, containsInAnyOrder("alice", "charlie", "dave"));
+    }
+
+    @Test
+    void populateOwnerListBoxModel_selectedOwnerNotPresent() {
+        List<GiteaRepository> repositories = Arrays.asList(
+                createMockRepository("alice"),
+                createMockRepository("charlie")
+        );
+
+        var result = GiteaOwnerListHelper.populateOwnerListBoxModel("dave", "bob", repositories);
+
+        assertThat(result.size(), is(3));
+        assertThat(result.get(0).name, not(is("bob"))); // selected owner first
+
+        // The rest should be alice, charlie, dave in any order
+        List<String> rest = Arrays.asList(result.get(0).name, result.get(1).name, result.get(2).name);
+        assertThat(rest, containsInAnyOrder("alice", "charlie", "dave"));
+    }
+
+    private GiteaRepository createMockRepository(String ownerName) {
+        GiteaRepository repo = mock(GiteaRepository.class);
+        GiteaOwner owner = mock(GiteaOwner.class);
+        when(owner.getUsername()).thenReturn(ownerName);
+        when(repo.getOwner()).thenReturn(owner);
+        return repo;
+    }
+}