Added more markdown syntax, and added portals.

Backend/Main.py

@@ -42,6 +42,7 @@ from Locks import (
     RequirePathAccessible,
     SetLock,
 )
+from Portals import ResolvePortals
 from Preview import GetFileSize, GetMimeType, ParseRangeHeader, ReadTextFile, TextFileTypes
 from Settings import (
     DeleteTheme,
@@ -517,6 +518,32 @@ def GetFileEndpoint(
     return StreamingResponse(IterateFile(), media_type=MimeType, headers=Headers)
 
 
+@Application.get("/api/file/resolved")
+def GetResolvedFileEndpoint(
+    Root: str, Path: str, CurrentUser: dict = Depends(GetCurrentUser)
+) -> dict:
+    RequirePathAccessible(Root, Path, CurrentUser)
+
+    try:
+        FilePath = ResolvePath(Root, Path)
+    except ValueError as Error:
+        raise HTTPException(status_code=400, detail=str(Error))
+
+    if not FilePath.is_file():
+        raise HTTPException(status_code=404, detail="File not found.")
+
+    FileType = ClassifyFile(FilePath)
+
+    if FileType not in TextFileTypes:
+        raise HTTPException(status_code=400, detail="Not a text file.")
+
+    Content = ReadTextFile(FilePath)
+    Resolved = ResolvePortals(
+        Root, Path, Content, CurrentUser["Username"], CurrentUser.get("Groups", [])
+    )
+    return {"Content": Resolved}
+
+
 @Application.put("/api/file")
 async def PutFileEndpoint(
     Root: str, Path: str, request: Request, CurrentUser: dict = Depends(GetCurrentUser)