Resolve script to match version in name of selected timeline items in media pool to current resolve project version number

resolve_update_timeline_version_name.py

"""Set selected Resolvetimeline name versions to project name version."""
from typing import Optional
import re

import DaVinciResolveScript as bmd

VERSION_REGEX = re.compile(r'_v(\d+)')


resolve = bmd.scriptapp('Resolve')
manager = resolve.GetProjectManager()
project = manager.GetCurrentProject()
pool = project.GetMediaPool()


num_timelines = project.GetTimelineCount()
timelines_by_mpi_id = {}
for idx in range(1, num_timelines+1):
    timeline = project.GetTimelineByIndex(idx)
    timeline_mpi = timeline.GetMediaPoolItem()
    timeline_mpi_id = timeline_mpi.GetUniqueId()
    timelines_by_mpi_id[timeline_mpi_id] = timeline


def get_version(text: str) -> Optional[int]:
    """Parse version number from 'file_v001.dpr' or alike"""
    if not text:
        return None
        
    match = VERSION_REGEX.search(text)
    if not match:
        return None

    try:
        return int(match.group(1))
    except ValueError:
        return None


project_name = project.GetName()
project_version = get_version(project_name)

selected_clips = pool.GetSelectedClips() or []
selected_timelines = [
    timelines_by_mpi_id[mpi.GetUniqueId()] 
    for mpi in selected_clips 
    if mpi.GetUniqueId() in timelines_by_mpi_id
]
for timeline in selected_timelines:
    timeline_name = timeline.GetName()
    timeline_version = get_version(timeline_name)

    # TODO: Instead of creating a new version identifier
    #   directly use the string taken from the project name
    #   so that we match its padding automatically.
    version_suffix = "_v{0:03d}".format(project_version)
    if timeline_version is None:
        # Add version suffix
        timeline.SetName(timeline_name + version_suffix)
    elif timeline_version != project_version:
        new_name = VERSION_REGEX.sub(version_suffix, timeline_name)
        timeline.SetName(new_name)