Show whether a PR is WIP inside popups (go-gitea#28975)

Fixes https://codeberg.org/forgejo/forgejo/issues/2257

Draft status of a PR is currently not exposed by the API. This PR adds a
'draft' field to pull requests in the API, which is used to correctly
set the PR color/icon in a ContextPopup.

---

Before:

![image](https://github.com/go-gitea/gitea/assets/5541521/72cbd30e-1175-4338-aa97-ac99c46c5118)

After:

![image](https://github.com/go-gitea/gitea/assets/5541521/111c9eba-460e-4d57-bcca-23a151c3a4f1)

modules/structs/issue.go

@@ -26,8 +26,9 @@ const (
 
 // PullRequestMeta PR info if an issue is a PR
 type PullRequestMeta struct {
-	HasMerged bool       `json:"merged"`
-	Merged    *time.Time `json:"merged_at"`
+	HasMerged        bool       `json:"merged"`
+	Merged           *time.Time `json:"merged_at"`
+	IsWorkInProgress bool       `json:"draft"`
 }
 
 // RepositoryMeta basic repository information

services/convert/issue.go

@@ -98,7 +98,8 @@ func toIssue(ctx context.Context, issue *issues_model.Issue, getDownloadURL func
 		}
 		if issue.PullRequest != nil {
 			apiIssue.PullRequest = &api.PullRequestMeta{
-				HasMerged: issue.PullRequest.HasMerged,
+				HasMerged:        issue.PullRequest.HasMerged,
+				IsWorkInProgress: issue.PullRequest.IsWorkInProgress(ctx),
 			}
 			if issue.PullRequest.HasMerged {
 				apiIssue.PullRequest.Merged = issue.PullRequest.MergedUnix.AsTimePtr()

web_src/js/components/ContextPopup.vue

@@ -30,6 +30,9 @@ export default {
     icon() {
       if (this.issue.pull_request !== null) {
         if (this.issue.state === 'open') {
+          if (this.issue.pull_request.draft === true) {
+            return 'octicon-git-pull-request-draft'; // WIP PR
+          }
           return 'octicon-git-pull-request'; // Open PR
         } else if (this.issue.pull_request.merged === true) {
           return 'octicon-git-merge'; // Merged PR
@@ -42,12 +45,17 @@ export default {
     },
 
     color() {
+      if (this.issue.pull_request !== null) {
+        if (this.issue.pull_request.draft === true) {
+          return 'grey'; // WIP PR
+        } else if (this.issue.pull_request.merged === true) {
+          return 'purple'; // Merged PR
+        }
+      }
       if (this.issue.state === 'open') {
-        return 'green';
-      } else if (this.issue.pull_request !== null && this.issue.pull_request.merged === true) {
-        return 'purple';
+        return 'green'; // Open Issue
       }
-      return 'red';
+      return 'red'; // Closed Issue
     },
 
     labels() {

web_src/js/svg.js

@@ -33,6 +33,7 @@ import octiconGitBranch from '../../public/assets/img/svg/octicon-git-branch.svg
 import octiconGitCommit from '../../public/assets/img/svg/octicon-git-commit.svg';
 import octiconGitMerge from '../../public/assets/img/svg/octicon-git-merge.svg';
 import octiconGitPullRequest from '../../public/assets/img/svg/octicon-git-pull-request.svg';
+import octiconGitPullRequestDraft from '../../public/assets/img/svg/octicon-git-pull-request-draft.svg';
 import octiconHeading from '../../public/assets/img/svg/octicon-heading.svg';
 import octiconHorizontalRule from '../../public/assets/img/svg/octicon-horizontal-rule.svg';
 import octiconImage from '../../public/assets/img/svg/octicon-image.svg';
@@ -104,6 +105,7 @@ const svgs = {
   'octicon-git-commit': octiconGitCommit,
   'octicon-git-merge': octiconGitMerge,
   'octicon-git-pull-request': octiconGitPullRequest,
+  'octicon-git-pull-request-draft': octiconGitPullRequestDraft,
   'octicon-heading': octiconHeading,
   'octicon-horizontal-rule': octiconHorizontalRule,
   'octicon-image': octiconImage,