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#!/usr/bin/python3

import argparse
import sys

from bupper.repository import Repo
from bupper.targets    import TargetLocal

# define the backup targets
tgts = (
    #TargetLocal('local', dirs = ['/usr/local/share']),
)

def list_targets(tgts):
    for tgt in tgts:
        sys.stdout.write('%s\n' % tgt.name)

# parse the commandline
parser = argparse.ArgumentParser()
parser.add_argument('-l', '--list-targets', action = 'store_true')
parser.add_argument('targets', nargs = argparse.REMAINDER)
args = parser.parse_args()

if args.list_targets:
    list_targets(tgts)
    sys.exit(0)

if len(args.targets) > 0:
    tgts_run = []
    for requested in args.targets:
        try:
            tgts_run.append(next(filter(lambda tgt: tgt.name == requested, tgts)))
        except StopIteration:
            sys.stderr.write('Requested target "%s" not defined\n' % requested);
            sys.exit(1)
else:
    tgts_run = tgts

repo = Repo()
res = repo.backup(tgts_run)
if not res.all_ok:
    sys.stderr.write('Error while backing up:\n')
    for tgt, tgt_res in zip(tgts, res.target_results):
        if tgt_res.retcode == 0:
            continue

        sys.stderr.write('Backing up target "%s" failed with code %d, bup output:\n' %
                         (tgt.name, tgt_res.retcode))
        sys.stderr.write(tgt_res.output.decode('utf-8', errors = 'backslashreplace') + '\n')

    if res.par2_result.retcode != 0:
        sys.stderr.write('Generating par2 recovery information failed with code %d, bup output:\n' %
                         (res.par2_result.retcode))
        sys.stderr.write(res.par2_result.output.decode('utf-8', errors = 'backslashreplace') + '\n')