feat: publish draft pull requests from mobile (Closes #1344)

src/gitea_proxy.py

@@ -2028,6 +2028,69 @@ async def request_assigned_pull_review(
     }
 
 
+async def publish_authored_assigned_pull(
+    repository: str, number: int, expected_head_sha: str
+) -> dict:
+    login, pull = await _current_login_and_target(
+        f"repos/{repository}/pulls/{number}"
+    )
+    author = pull.get("user") if isinstance(pull.get("user"), dict) else {}
+    head = pull.get("head") if isinstance(pull.get("head"), dict) else {}
+    title = pull.get("title") if isinstance(pull.get("title"), str) else ""
+    ready_title = re.sub(
+        r"^(?:WIP\s*:|\[WIP\]|Draft\s*:|\[Draft\])\s*",
+        "",
+        title,
+        count=1,
+        flags=re.IGNORECASE,
+    ).strip()
+    if (
+        pull.get("state") != "open"
+        or pull.get("merged") is True
+        or pull.get("draft") is not True
+        or author.get("login", "").casefold() != login.casefold()
+        or not _login_in_users(login, pull.get("assignees"))
+        or head.get("sha") != expected_head_sha
+        or not ready_title
+        or ready_title == title
+    ):
+        raise IssueNotAvailableError("Draft pull request is no longer publishable")
+
+    response = await _get_client().patch(
+        f"/api/v1/repos/{repository}/pulls/{number}",
+        headers=_auth(),
+        json={"title": ready_title},
+    )
+    response.raise_for_status()
+    confirmed_response = await _get_client().get(
+        f"/api/v1/repos/{repository}/pulls/{number}", headers=_auth()
+    )
+    confirmed_response.raise_for_status()
+    confirmed = confirmed_response.json()
+    confirmed_head = (
+        confirmed.get("head")
+        if isinstance(confirmed, dict) and isinstance(confirmed.get("head"), dict)
+        else {}
+    )
+    if (
+        not isinstance(confirmed, dict)
+        or confirmed.get("number") != number
+        or confirmed.get("state") != "open"
+        or confirmed.get("draft") is not False
+        or confirmed.get("title") != ready_title
+        or confirmed_head.get("sha") != expected_head_sha
+    ):
+        raise ValueError("Gitea did not confirm the pull request is ready")
+    return {
+        "repository": repository,
+        "number": number,
+        "title": ready_title,
+        "head_sha": expected_head_sha,
+        "state": "open",
+        "draft": False,
+    }
+
+
 async def cancel_assigned_pull_review(
     repository: str, number: int, reviewer: str, expected_head_sha: str
 ) -> dict:

src/main.py

@@ -1117,6 +1117,12 @@ class PullReviewRequest(BaseModel):
     )
 
 
+class PullReadyRequest(BaseModel):
+    expected_head_sha: str = Field(
+        min_length=7, max_length=64, pattern=r"^[A-Fa-f0-9]+$"
+    )
+
+
 class PullContentUpdate(BaseModel):
     title: str = Field(min_length=1, max_length=255)
     body: str = Field(default="", max_length=10_000)
@@ -6609,6 +6615,35 @@ async def update_authored_assigned_pull_content(
     return JSONResponse(result)
 
 
+@app.patch("/api/v1/repos/{owner}/{repo}/pulls/{number}/ready")
+async def publish_authored_assigned_pull(
+    update: PullReadyRequest,
+    owner: str,
+    repo: str,
+    number: int = PathParam(gt=0),
+):
+    repository = f"{owner}/{repo}"
+    try:
+        result = await asyncio.wait_for(
+            gitea_proxy.publish_authored_assigned_pull(
+                repository, number, update.expected_head_sha
+            ),
+            timeout=ISSUE_ACTION_TIMEOUT_SECONDS,
+        )
+    except gitea_proxy.IssueNotAvailableError:
+        return JSONResponse(
+            {"error": "The draft pull request changed. Reload before publishing."},
+            status_code=409,
+        )
+    except Exception:
+        return JSONResponse(
+            {"error": "The draft pull request could not be published. Please retry."},
+            status_code=503,
+            headers={"Retry-After": "1"},
+        )
+    return JSONResponse(result)
+
+
 @app.get("/api/v1/repos/{owner}/{repo}/pulls/{number}/review-data")
 async def assigned_pull_review_data(
     owner: str, repo: str, number: int = PathParam(gt=0)