#
# Set DISTRO_VERSION and SDK_VERSION from git describe
#

DISTRO_VERSION = "${@get_custom_distro_version(d)}"

def get_custom_distro_version(d):
    import os
    import bb

    datetime = d.getVar('DATETIME')
    persist = bb.persist_data.persist('custom', d)
    key = 'distro_version_git'

    # Check if we have a valid cached value
    if key in persist and ':' in persist[key]:
        cached_datetime, cached_ver = persist[key].split(':', maxsplit=1)
        if cached_datetime == datetime:
            return cached_ver

    srcdir = os.path.abspath(os.path.join(d.getVar('BBLAYERS_FETCH_DIR'), '..'))

    try:
        ver, _ = bb.process.run('git describe --tags --dirty --long 2>/dev/null', cwd=srcdir)
        ver = ver.strip()
    except bb.process.ExecutionError:
        bb.warn("Unable to set DISTRO_VERSION from git describe. Using '0.0'.")
        ver = '0.0'

    bb.warn(f"Caching DISTRO_VERSION='{ver}' for build date {datetime}")
    persist[key] = f"{datetime}:{ver}"
    return ver

# Do not include date/time in hash, since this is only used to detect different bitbake runs
get_custom_distro_version[vardepsexclude] = "DATETIME"