liumangmang
40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
"""Snapshot diff logic."""
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from typing import Any, Optional
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def diff_snapshots(
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previous: Optional[dict[str, Any]],
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current: dict[str, Any],
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) -> list[dict[str, Any]]:
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"""Return list of rate changes between previous and current snapshots.
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Returns empty list if previous is None (first check)."""
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if not previous:
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return []
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old_groups: dict[str, Any] = previous.get("groups") or {}
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new_groups: dict[str, Any] = current.get("groups") or {}
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changes: list[dict[str, Any]] = []
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for gid, new_g in sorted(new_groups.items()):
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if not isinstance(new_g, dict):
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continue
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old_g = old_groups.get(gid)
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old_rate = old_g.get("rate") if isinstance(old_g, dict) else None
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new_rate = new_g.get("rate")
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if old_rate != new_rate:
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changes.append({
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"group_id": gid,
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"group_name": new_g.get("group_name", ""),
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"platform": new_g.get("platform", ""),
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"old_rate": old_rate,
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"new_rate": new_rate,
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})
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for gid, old_g in sorted(old_groups.items()):
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if gid not in new_groups and isinstance(old_g, dict):
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changes.append({
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"group_id": gid,
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"group_name": old_g.get("group_name", ""),
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"platform": old_g.get("platform", ""),
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"old_rate": old_g.get("rate"),
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"new_rate": None,
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})
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return changes
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