import docker
import restic
import yaml
import configparser


bindingIncludePattern = None
bindingExcludePattern = None
remoteHost = None
remoteUser = None
repository = None
passwordFile = None


def read_config_file(filepath: str = "configuration.ini"):
    parser = configparser.ConfigParser()
    parser.read(filepath)
    global bindingIncludePattern
    global bindingExcludePattern
    global remoteHost
    global remoteUser
    global repository
    global passwordFile
    bindingIncludePattern = parser["backandup"]["bindincludepattern"]
    bindingExcludePattern = parser["backandup"]["bindexcludepattern"]
    remoteHost = parser["restic"]["remotehost"]
    remoteUser = parser["restic"]["remoteuser"]
    repository = parser["restic"]["repository"]
    passwordFile = parser["restic"]["passwordfile"]


def do_backup(dirpath: str, tags: str = None):
    restic.repository = f"sftp:{remoteUser}@{remoteHost}:/{repository}"
    restic.password_file = passwordFile
    if tags is None:
        restic.backup(paths=[dirpath])
    else:
        restic.backup(paths=[dirpath], tags=[])


def backup_ct_binds(ct: docker.models.containers.Container, includepattern: str | list = None,
                    excludepattern: str | list = None):
    if ct.attrs['HostConfig']['Binds'] is None:
        print("  Nothing to backup")
        return 0
    if type(includepattern) is str:
        includepattern = [includepattern]
    if type(excludepattern) is str:
        excludepattern = [excludepattern]
    if includepattern is None:
        includepattern = ["NOPATTERNTOINCLUDEXXXXXX"]
    if excludepattern is None:
        excludepattern = ["NOPATTERNTOEXCLUDEXXXXXX"]
    for BindMount in ct.attrs['HostConfig']['Binds']:
        BindPath = BindMount.split(":")[0]
        print(f"  {BindPath}")
        # Si on matche au moins 1 pattern d'inclusion ET aucun pattern d'exclusion
        if any(x in BindPath for x in includepattern) and not any(x in BindPath for x in excludepattern):
            do_backup(BindPath)
        else:
            print("  not a directory to backup")
    return 0


def stop_backup_restart_container(ct: docker.models.containers.Container):
    print(ct.name)
    dorestart = False
    if ct.attrs['State']['Status'] == 'running':
        print("  stop the container")
        dorestart = True
        ct.stop()
    backup_ct_binds(ct, bindingIncludePattern, bindingExcludePattern)
    if dorestart:
        print("  start the container")
        ct.start()
    return 0

# Press the green button in the gutter to run the script.
if __name__ == '__main__':
    dockerhost = docker.from_env()
    read_config_file()
    for container in dockerhost.containers.list(all=True):
        stop_backup_restart_container(container)