First MVP

src/gitea_codex_bot/services/gitea.py

@@ -0,0 +1,97 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Any
+from urllib.parse import quote
+
+import httpx
+
+from gitea_codex_bot.config import Settings
+
+
+@dataclass(slots=True)
+class PullRequestContext:
+    repo: str
+    pr_number: int
+    base_ref: str
+    base_sha: str
+    head_ref: str
+    head_sha: str
+    clone_url: str
+    html_url: str
+    is_fork: bool
+
+
+class GiteaClient:
+    def __init__(self, settings: Settings) -> None:
+        self.settings = settings
+        self.base_url = settings.gitea_base_url
+        self.headers = {
+            "Authorization": f"token {settings.gitea_token.get_secret_value()}",
+            "Accept": "application/json",
+            "Content-Type": "application/json",
+        }
+
+    def _request(self, method: str, path: str, *, json_body: dict[str, Any] | None = None) -> Any:
+        with httpx.Client(timeout=20.0) as client:
+            response = client.request(
+                method,
+                f"{self.base_url}{path}",
+                headers=self.headers,
+                json=json_body,
+            )
+            response.raise_for_status()
+            if response.status_code == 204:
+                return None
+            return response.json()
+
+    @staticmethod
+    def split_repo(repo: str) -> tuple[str, str]:
+        owner, name = repo.split("/", 1)
+        return owner, name
+
+    def get_pull_request(self, repo: str, pr_number: int) -> PullRequestContext:
+        owner, name = self.split_repo(repo)
+        encoded_owner = quote(owner, safe="")
+        encoded_name = quote(name, safe="")
+        payload = self._request("GET", f"/api/v1/repos/{encoded_owner}/{encoded_name}/pulls/{pr_number}")
+        return PullRequestContext(
+            repo=repo,
+            pr_number=pr_number,
+            base_ref=payload["base"]["ref"],
+            base_sha=payload["base"]["sha"],
+            head_ref=payload["head"]["ref"],
+            head_sha=payload["head"]["sha"],
+            clone_url=payload["head"]["repo"]["clone_url"],
+            html_url=payload["html_url"],
+            is_fork=bool(payload["head"]["repo"]["full_name"] != payload["base"]["repo"]["full_name"]),
+        )
+
+    def post_issue_comment(self, repo: str, pr_number: int, body: str) -> int:
+        owner, name = self.split_repo(repo)
+        encoded_owner = quote(owner, safe="")
+        encoded_name = quote(name, safe="")
+        payload = self._request(
+            "POST",
+            f"/api/v1/repos/{encoded_owner}/{encoded_name}/issues/{pr_number}/comments",
+            json_body={"body": body},
+        )
+        return int(payload["id"])
+
+    def edit_issue_comment(self, repo: str, comment_id: int, body: str) -> int:
+        owner, name = self.split_repo(repo)
+        encoded_owner = quote(owner, safe="")
+        encoded_name = quote(name, safe="")
+        payload = self._request(
+            "PATCH",
+            f"/api/v1/repos/{encoded_owner}/{encoded_name}/issues/comments/{comment_id}",
+            json_body={"body": body},
+        )
+        return int(payload["id"])
+
+    def list_issue_comments(self, repo: str, pr_number: int) -> list[dict[str, Any]]:
+        owner, name = self.split_repo(repo)
+        encoded_owner = quote(owner, safe="")
+        encoded_name = quote(name, safe="")
+        payload = self._request("GET", f"/api/v1/repos/{encoded_owner}/{encoded_name}/issues/{pr_number}/comments")
+        return list(payload)