"""Status panel additions to AbletonOSC (installed by tools/abletonosc/install.sh on the Tracks Mac).

/live/statuspanel/move_note <track name> <beat> <pitch> <new beat>
    Moves the note of `pitch` that starts at arrangement `beat` on the arrangement MIDI clip of the track
    called `track name` so it starts at `new beat`, keeping where it ends (the next cue is not touched).
    Answers (<track name>, <beat>, <pitch>, <moved: 0 or 1>). Undo in Live (Cmd+Z) puts it back.
"""
import logging

logger = logging.getLogger("abletonosc")


def register(handler):
    def move_note(params):
        song = handler.song
        name, beat, pitch, new = str(params[0]), float(params[1]), int(params[2]), float(params[3])
        track = next((t for t in song.tracks if t.name.strip().upper() == name.strip().upper() and t.has_midi_input), None)
        moved = 0
        for clip in (track.arrangement_clips if track else []):
            if not (clip.start_time - 1e-6 <= beat < clip.end_time):
                continue
            zero = clip.start_time - (clip.loop_start if clip.looping else clip.start_marker)
            local, new_local = beat - zero, new - zero
            notes = clip.get_notes_extended(pitch, 1, local - 0.002, 0.004)
            for n in notes:
                end = n.start_time + n.duration
                if new_local < end:
                    n.start_time, n.duration = new_local, end - new_local
                    moved += 1
            if moved:
                clip.apply_note_modifications(notes)
            break
        logger.info("statuspanel: %s note %d at %s -> %s: %d moved", name, pitch, beat, new, moved)
        return name, beat, pitch, moved

    handler.osc_server.add_handler("/live/statuspanel/move_note", move_note)