Files
micronomicon/backend/pages.py
2026-04-05 09:53:01 +02:00

414 lines
12 KiB
Python

import os
import shlex
import shutil
from pathlib import Path
from fastapi import APIRouter, HTTPException, Query
from pydantic import BaseModel, Field
import uframe
router = APIRouter()
files_router = APIRouter()
PAGES_DIR = Path(os.environ.get("PAGES_DIR", "/data/pages"))
SOURCES_DIR = Path(os.environ.get("SOURCES_DIR", "/data/sources"))
DEFAULT_INDEX_SOURCE = '''\
page "Welcome" 60
bigtitle "uFrame" thin
box rounded "Micronomicon"
align center
text "Decentralized Page Server"
text "Powered by @bold{Reticulum} and @bold{NomadNet}"
spacer
heading 2 "Pages"
text "This node is serving pages built with the uFrame DSL."
text "Use the web IDE to create and publish new pages."
spacer
divider light
label "Node" "Micronomicon"
label "Engine" "uFrame v1"
status "Node" online
'''
def ensure_default_pages():
"""Create default index page and .env file if they don't exist."""
PAGES_DIR.mkdir(parents=True, exist_ok=True)
SOURCES_DIR.mkdir(parents=True, exist_ok=True)
index_mu = PAGES_DIR / "index.mu"
index_src = SOURCES_DIR / "index.uf"
if not index_mu.is_file():
# Compile and publish the default index
result = uframe.compile(DEFAULT_INDEX_SOURCE)
index_mu.write_text(result.micron, encoding="utf-8")
index_mu.chmod(0o644)
if not index_src.is_file():
index_src.write_text(DEFAULT_INDEX_SOURCE, encoding="utf-8")
env_path = SOURCES_DIR / ".env"
if not env_path.is_file():
env_path.write_text(
"# Environment variables for dynamic pages\n"
"# Access with: source name : env \"KEY\"\n"
"#\n"
"# Example:\n"
"# API_KEY=your-key-here\n",
encoding="utf-8",
)
class PageMeta(BaseModel):
name: str
title: str | None = None
published: bool = False
has_source: bool = False
last_modified: float | None = None
size: int | None = None
class PageDetail(BaseModel):
name: str
source: str | None = None
class SaveRequest(BaseModel):
source: str
publish: bool = False
def _extract_title(source: str) -> str | None:
"""Extract title from µFrame source or legacy Micron."""
for line in source.splitlines():
stripped = line.strip()
if not stripped or stripped.startswith("#"):
continue
# µFrame: page "Title" [width]
if stripped.lower().startswith("page "):
try:
parts = shlex.split(stripped)
if len(parts) >= 2:
return parts[1]
except ValueError:
pass
break
# µFrame: heading 1 "Title"
if stripped.lower().startswith("heading "):
try:
parts = shlex.split(stripped)
if len(parts) >= 3:
return parts[2]
except ValueError:
pass
break
# Legacy Micron: >Title
if stripped.startswith(">") and not stripped.startswith(">>"):
return stripped[1:].strip()
break
return None
def _list_all_page_names() -> set[str]:
names: set[str] = set()
if PAGES_DIR.is_dir():
for f in PAGES_DIR.iterdir():
if f.suffix == ".mu" and f.is_file():
names.add(f.stem)
if SOURCES_DIR.is_dir():
for f in SOURCES_DIR.iterdir():
if f.suffix in (".uf", ".mu") and f.is_file():
names.add(f.stem)
return names
def _source_path(name: str) -> Path:
"""Get source file path, preferring .uf over legacy .mu."""
uf = SOURCES_DIR / f"{name}.uf"
if uf.is_file():
return uf
mu = SOURCES_DIR / f"{name}.mu"
return mu if mu.is_file() else uf # default to .uf for new files
def _page_meta(name: str) -> PageMeta:
src_path = _source_path(name)
mu_path = PAGES_DIR / f"{name}.mu"
title = None
if src_path.is_file():
title = _extract_title(src_path.read_text(encoding="utf-8"))
elif mu_path.is_file():
title = _extract_title(mu_path.read_text(encoding="utf-8"))
published = mu_path.is_file()
last_modified = mu_path.stat().st_mtime if published else None
size = mu_path.stat().st_size if published else None
return PageMeta(
name=name,
title=title,
published=published,
has_source=src_path.is_file(),
last_modified=last_modified,
size=size,
)
@router.get("/pages", response_model=list[PageMeta])
async def list_pages():
return [_page_meta(n) for n in sorted(_list_all_page_names())]
@router.get("/pages/{name}", response_model=PageDetail)
async def get_page(name: str):
src_path = _source_path(name)
mu_path = PAGES_DIR / f"{name}.mu"
if not src_path.is_file() and not mu_path.is_file():
raise HTTPException(status_code=404, detail="Page not found")
source = (
src_path.read_text(encoding="utf-8")
if src_path.is_file()
else mu_path.read_text(encoding="utf-8")
)
return PageDetail(name=name, source=source)
@router.post("/pages/{name}", response_model=PageMeta)
async def save_page(name: str, req: SaveRequest):
SOURCES_DIR.mkdir(parents=True, exist_ok=True)
PAGES_DIR.mkdir(parents=True, exist_ok=True)
# Save source as .uf
src_path = SOURCES_DIR / f"{name}.uf"
src_path.write_text(req.source, encoding="utf-8")
# Remove legacy .mu source if it exists
legacy_mu = SOURCES_DIR / f"{name}.mu"
if legacy_mu.is_file():
legacy_mu.unlink()
# Publish: compile .uf → .mu and write to pages dir
if req.publish:
try:
result = uframe.compile(req.source)
mu_path = PAGES_DIR / f"{name}.mu"
if result.is_dynamic and result.script:
# Dynamic page: write executable Python script
mu_path.write_text(result.script, encoding="utf-8")
mu_path.chmod(0o755) # Set execute bit for NomadNet
else:
# Static page: write compiled Micron
mu_path.write_text(result.micron, encoding="utf-8")
# Remove execute bit if it was previously dynamic
mu_path.chmod(0o644)
except Exception as e:
raise HTTPException(
status_code=422,
detail=f"Compile failed during publish: {e}",
)
return _page_meta(name)
@router.delete("/pages/{name}")
async def delete_page(name: str):
src_path = _source_path(name)
mu_path = PAGES_DIR / f"{name}.mu"
if not src_path.is_file() and not mu_path.is_file():
raise HTTPException(status_code=404, detail="Page not found")
if src_path.is_file():
src_path.unlink()
if mu_path.is_file():
mu_path.unlink()
return {"deleted": name}
# ---------------------------------------------------------------------------
# File browser endpoints
# ---------------------------------------------------------------------------
class FileEntry(BaseModel):
name: str
path: str
type: str # "file" | "folder" | "env"
size: int | None = None
last_modified: float | None = None
title: str | None = None
published: bool = False
class MkdirRequest(BaseModel):
path: str
class MoveRequest(BaseModel):
model_config = {"populate_by_name": True}
from_path: str = Field(alias="from")
to: str
class EnvRequest(BaseModel):
content: str
def _validate_relative_path(rel: str) -> Path:
"""Validate that a relative path has no traversal components and resolves
inside the expected base directories. Returns the cleaned relative Path."""
p = Path(rel)
# Reject absolute paths and any ".." components
if p.is_absolute():
raise HTTPException(status_code=400, detail="Absolute paths not allowed")
for part in p.parts:
if part == "..":
raise HTTPException(status_code=400, detail="Directory traversal not allowed")
# Extra safety: resolve against SOURCES_DIR and verify containment
resolved = (SOURCES_DIR / p).resolve()
if not str(resolved).startswith(str(SOURCES_DIR.resolve())):
raise HTTPException(status_code=400, detail="Path escapes base directory")
return p
def _file_entry(base: Path, rel_path: Path) -> FileEntry:
"""Build a FileEntry for a file or directory at base/rel_path."""
full = base / rel_path
name = rel_path.name
if full.is_dir():
return FileEntry(
name=name,
path=str(rel_path),
type="folder",
)
# .env file
if name == ".env":
stat = full.stat()
return FileEntry(
name=name,
path=str(rel_path),
type="env",
size=stat.st_size,
last_modified=stat.st_mtime,
)
# Regular file
stat = full.stat()
title = None
published = False
if full.suffix == ".uf":
try:
title = _extract_title(full.read_text(encoding="utf-8"))
except Exception:
pass
# Check published status: corresponding .mu in PAGES_DIR at same relative path
mu_rel = rel_path.with_suffix(".mu")
published = (PAGES_DIR / mu_rel).is_file()
return FileEntry(
name=name,
path=str(rel_path),
type="file",
size=stat.st_size,
last_modified=stat.st_mtime,
title=title,
published=published,
)
@files_router.get("/files", response_model=list[FileEntry])
async def list_files(path: str = Query(default="")):
"""List files and folders in SOURCES_DIR, optionally scoped to a subfolder."""
if path:
rel = _validate_relative_path(path)
else:
rel = Path(".")
target = (SOURCES_DIR / rel).resolve()
if not str(target).startswith(str(SOURCES_DIR.resolve())):
raise HTTPException(status_code=400, detail="Path escapes base directory")
if not target.is_dir():
raise HTTPException(status_code=404, detail="Directory not found")
entries: list[FileEntry] = []
for item in sorted(target.iterdir(), key=lambda p: (not p.is_dir(), p.name.lower())):
item_rel = item.relative_to(SOURCES_DIR)
entries.append(_file_entry(SOURCES_DIR, item_rel))
return entries
@files_router.post("/files/mkdir")
async def mkdir(req: MkdirRequest):
"""Create a folder in both SOURCES_DIR and PAGES_DIR."""
rel = _validate_relative_path(req.path)
(SOURCES_DIR / rel).mkdir(parents=True, exist_ok=True)
(PAGES_DIR / rel).mkdir(parents=True, exist_ok=True)
return {"created": str(rel)}
@files_router.post("/files/move")
async def move_file(req: MoveRequest):
"""Move/rename a file or folder in both SOURCES_DIR and PAGES_DIR."""
from_rel = _validate_relative_path(req.from_path)
to_rel = _validate_relative_path(req.to)
# Move in SOURCES_DIR
src_from = SOURCES_DIR / from_rel
src_to = SOURCES_DIR / to_rel
if src_from.exists():
src_to.parent.mkdir(parents=True, exist_ok=True)
shutil.move(str(src_from), str(src_to))
# Move in PAGES_DIR (for .uf files, look for .mu counterpart)
if src_from.suffix == ".uf" or (not src_from.exists() and from_rel.suffix == ".uf"):
pages_from = PAGES_DIR / from_rel.with_suffix(".mu")
pages_to = PAGES_DIR / to_rel.with_suffix(".mu")
else:
pages_from = PAGES_DIR / from_rel
pages_to = PAGES_DIR / to_rel
if pages_from.exists():
pages_to.parent.mkdir(parents=True, exist_ok=True)
shutil.move(str(pages_from), str(pages_to))
return {"moved": {"from": str(from_rel), "to": str(to_rel)}}
@files_router.get("/files/env")
async def read_env():
"""Read the .env file from SOURCES_DIR root."""
env_path = SOURCES_DIR / ".env"
if env_path.is_file():
return {"content": env_path.read_text(encoding="utf-8")}
return {"content": ""}
@files_router.post("/files/env")
async def save_env(req: EnvRequest):
"""Save the .env file to SOURCES_DIR root."""
SOURCES_DIR.mkdir(parents=True, exist_ok=True)
env_path = SOURCES_DIR / ".env"
env_path.write_text(req.content, encoding="utf-8")
return {"saved": True}