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"""Edits to node.toml made as text, so the operator's comments survive them."""
from __future__ import annotations
import re
from pathlib import Path
from meshbay_node.ops.core import OpError
def _find_group_range(lines: list[str], group_id: str) -> tuple[int, int] | None:
"""Line range of a [[groups]] block by id: (start, end_exclusive)."""
id_re = re.compile(r'^\s*id\s*=\s*"([^"]*)"')
block_starts: list[int] = []
for i, line in enumerate(lines):
if line.strip() == "[[groups]]":
block_starts.append(i)
for j, start in enumerate(block_starts):
boundary = block_starts[j + 1] if j + 1 < len(block_starts) else len(lines)
for k in range(start + 1, boundary):
s = lines[k].strip()
if s.startswith("[") and s != "[[groups.roots]]":
boundary = k
break
for k in range(start + 1, boundary):
m = id_re.match(lines[k])
if m and m.group(1) == group_id:
return (start, boundary)
return None
def _update_node_toml(conf_path: Path, updates: dict) -> None:
"""Write changed [node] settings back to node.toml without disturbing comments.
For each key, if the line exists (commented or not) it is replaced in place;
otherwise the key is appended to the end of the [node] section.
"""
if not conf_path.exists():
return
text = conf_path.read_text(encoding="utf-8")
lines = text.split("\n")
node_start = None
node_end = len(lines)
for i, line in enumerate(lines):
stripped = line.strip()
if stripped == "[node]":
node_start = i
elif node_start is not None and re.match(r'^\[', stripped):
node_end = i
break
if node_start is None:
lines.append("")
lines.append("[node]")
node_start = len(lines) - 1
node_end = len(lines)
def _format_value(key, value):
if isinstance(value, bool):
return f"{key} = {'true' if value else 'false'}"
if isinstance(value, list):
items = ", ".join(f'"{v}"' for v in value)
return f"{key} = [{items}]"
return f"{key} = {value}"
remaining = dict(updates)
for i in range(node_start + 1, node_end):
for key in list(remaining):
pattern = re.compile(
r'^(\s*#?\s*)' + re.escape(key) + r'\s*=\s*.*$')
if pattern.match(lines[i]):
value = remaining.pop(key)
lines[i] = _format_value(key, value)
break
for key, value in remaining.items():
lines.insert(node_end, _format_value(key, value))
node_end += 1
conf_path.write_text("\n".join(lines), encoding="utf-8", newline="\n")
def _insert_roots_block(conf_path: Path, group_id: str,
root_block: str) -> None:
"""Append a [[groups.roots]] block inside the matching [[groups]] section."""
text = conf_path.read_text(encoding="utf-8")
lines = text.split("\n")
rng = _find_group_range(lines, group_id)
if rng is None:
raise OpError(f"Group {group_id[:8]} not found in {conf_path}")
_start, end = rng
insert_at = end
while insert_at > _start + 1 and lines[insert_at - 1].strip() == "":
insert_at -= 1
new_lines = (lines[:insert_at]
+ [""]
+ root_block.rstrip("\n").split("\n")
+ lines[insert_at:])
conf_path.write_text("\n".join(new_lines), encoding="utf-8", newline="\n")
def _remove_roots_block(conf_path: Path, group_id: str,
resolved_path: str) -> None:
"""Remove a [[groups.roots]] block whose resolved path matches."""
text = conf_path.read_text(encoding="utf-8")
lines = text.split("\n")
rng = _find_group_range(lines, group_id)
if rng is None:
raise OpError(f"Group {group_id[:8]} not found in {conf_path}")
start, end = rng
path_re = re.compile(r'^\s*path\s*=\s*"([^"]*)"')
roots_starts: list[int] = []
for i in range(start + 1, end):
if lines[i].strip() == "[[groups.roots]]":
roots_starts.append(i)
for j, rs in enumerate(roots_starts):
rs_end = roots_starts[j + 1] if j + 1 < len(roots_starts) else end
for k in range(rs, rs_end):
m = path_re.match(lines[k])
if m:
try:
p = str(Path(m.group(1)).expanduser().resolve())
except OSError:
continue
if p == resolved_path:
rm_start = rs
if rm_start > 0 and lines[rm_start - 1].strip() == "":
rm_start -= 1
new_lines = lines[:rm_start] + lines[rs_end:]
conf_path.write_text("\n".join(new_lines), encoding="utf-8", newline="\n")
return
raise OpError("Root path not found in config", status=404)
def _update_root_field(conf_path: Path, group_id: str,
resolved_path: str, *,
writable: bool, removable: bool) -> None:
"""Update writable/removable fields on a root in node.toml."""
text = conf_path.read_text(encoding="utf-8")
lines = text.split("\n")
rng = _find_group_range(lines, group_id)
if rng is None:
raise OpError(f"Group {group_id[:8]} not found in {conf_path}")
start, end = rng
path_re = re.compile(r'^\s*path\s*=\s*"([^"]*)"')
writable_re = re.compile(r'^\s*(writable|upload)\s*=')
removable_re = re.compile(r'^\s*removable\s*=')
roots_starts: list[int] = []
for i in range(start + 1, end):
if lines[i].strip() == "[[groups.roots]]":
roots_starts.append(i)
for j, rs in enumerate(roots_starts):
rs_end = roots_starts[j + 1] if j + 1 < len(roots_starts) else end
found_path = False
for k in range(rs, rs_end):
m = path_re.match(lines[k])
if m:
try:
p = str(Path(m.group(1)).expanduser().resolve())
except OSError:
continue
if p == resolved_path:
found_path = True
break
if not found_path:
continue
writable_idx = None
removable_idx = None
for k in range(rs, rs_end):
if writable_re.match(lines[k]):
writable_idx = k
if removable_re.match(lines[k]):
removable_idx = k
if writable_idx is not None:
lines[writable_idx] = f" writable = {'true' if writable else 'false'}"
else:
lines.insert(rs_end, f" writable = {'true' if writable else 'false'}")
if removable_idx is not None and removable_idx >= rs_end:
removable_idx += 1
rs_end += 1
if removable_idx is not None:
lines[removable_idx] = f" removable = {'true' if removable else 'false'}"
else:
lines.insert(rs_end, f" removable = {'true' if removable else 'false'}")
conf_path.write_text("\n".join(lines), encoding="utf-8", newline="\n")
return
raise OpError("Root path not found in config", status=404)
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