import tasks


def validate_manifest(data, validator, error):
    import os.path

    schema_path = os.path.normpath(os.path.join(os.path.dirname(__file__), 'manifest-schema.yml'))
    validator(data, schema_path)

    for i, file_entry in enumerate(data['plugins']['file_copy']['files']):
        srcfile = file_entry['src']
        if not os.path.isfile(srcfile):
            msg = 'The source file %s does not exist.' % srcfile
            error(msg, ['plugins', 'file_copy', 'files', i])


def resolve_tasks(taskset, manifest):
    if ('mkdirs' in manifest.plugins['file_copy']):
        taskset.add(tasks.MkdirCommand)
    if ('files' in manifest.plugins['file_copy']):
        taskset.add(tasks.FileCopyCommand)