feat. Enforce repo review config

src/gitea_codex_bot/services/gitea.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import base64
 from dataclasses import dataclass
 from typing import Any
 from urllib.parse import quote
@@ -95,3 +96,24 @@ class GiteaClient:
         encoded_name = quote(name, safe="")
         payload = self._request("GET", f"/api/v1/repos/{encoded_owner}/{encoded_name}/issues/{pr_number}/comments")
         return list(payload)
+
+    def get_file_content(self, repo: str, path: str, *, ref: str) -> str | None:
+        owner, name = self.split_repo(repo)
+        encoded_owner = quote(owner, safe="")
+        encoded_name = quote(name, safe="")
+        encoded_path = quote(path, safe="")
+        try:
+            payload = self._request(
+                "GET",
+                f"/api/v1/repos/{encoded_owner}/{encoded_name}/contents/{encoded_path}?ref={quote(ref, safe='')}",
+            )
+        except httpx.HTTPStatusError as exc:
+            if exc.response.status_code == 404:
+                return None
+            raise
+        content = payload.get("content")
+        encoding = payload.get("encoding")
+        if not isinstance(content, str) or encoding != "base64":
+            return None
+        decoded = base64.b64decode(content.encode("ascii"))
+        return decoded.decode("utf-8", errors="ignore")