Files
bambuddy/backend
maziggy c6e6c4cdd9 fix(usage-tracker): split filament weight when AMS auto-falls-back mid-print (issue 957)
When one spool ran out and the AMS transparently switched to a sibling
  slot of the same material, the usage tracker credited the originally-
  mapped spool with the full 3MF estimate AND added the fallback spool's
  remain%-delta on top — so a 78g print could record as 138g across two
  spools, leaving the empty spool's recorded weight beyond its label.

  Two interacting bugs:

  1. bambu_mqtt.py: the tray-change recorder gated on
     `state in ("RUNNING", "PAUSE")`, but P2S firmware briefly transitions
     out of RUNNING during the AMS swap (into LOADING etc.), so the
     literal-string gate missed the switch entirely and tray_change_log
     stayed empty. Re-key on the print-lifecycle flags
     (_was_running and not _completion_triggered) so any tray change
     between print start and completion is captured regardless of the
     momentary gcode_state.

  2. usage_tracker.py: the splitting branch was gated on
     `not slot_to_tray`, so the splitting code only ran for prints where
     the slicer mapping hadn't been captured — i.e. never on the actual
     fallback case (slot_to_tray is populated by every print_cmd). Drop
     the gate: when tray_change_log has > 1 entries, splitting takes
     over and per-segment per-layer gcode usage replaces the stale
     mapping. Path 2 (AMS remain%-delta) then naturally skips both trays
     because they're already in handled_trays after splitting,
     eliminating the double-credit.
2026-05-06 14:42:38 +02:00
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