# Copyright (C) 2014 Canonical Ltd.
#
# Author: Ben Howard <ben.howard@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""Scripts Vendor: Run vendor scripts"""

import os
from textwrap import dedent

from cloudinit import subp, util
from cloudinit.config.schema import MetaSchema, get_meta_doc
from cloudinit.distros import ALL_DISTROS
from cloudinit.settings import PER_INSTANCE

MODULE_DESCRIPTION = """\
On select Datasources, vendors have a channel for the consumption
of all supported user data types via a special channel called
vendor data. Any scripts in the ``scripts/vendor`` directory in the datasource
will be run when a new instance is first booted. Scripts will be run in
alphabetical order. This module allows control over the execution of
vendor data.
"""

meta: MetaSchema = {
    "id": "cc_scripts_vendor",
    "name": "Scripts Vendor",
    "title": "Run vendor scripts",
    "description": MODULE_DESCRIPTION,
    "distros": [ALL_DISTROS],
    "frequency": PER_INSTANCE,
    "examples": [
        dedent(
            """\
            vendor_data:
              enabled: true
              prefix: /usr/bin/ltrace
            """
        ),
        dedent(
            """\
            vendor_data:
              enabled: true
              prefix: [timeout, 30]
            """
        ),
        dedent(
            """\
            # Vendor data will not be processed
            vendor_data:
              enabled: false
            """
        ),
    ],
}

__doc__ = get_meta_doc(meta)


SCRIPT_SUBDIR = "vendor"


def handle(name, cfg, cloud, log, _args):
    # This is written to by the vendor data handlers
    # any vendor data shell scripts get placed in runparts_path
    runparts_path = os.path.join(
        cloud.get_ipath_cur(), "scripts", SCRIPT_SUBDIR
    )

    prefix = util.get_cfg_by_path(cfg, ("vendor_data", "prefix"), [])

    try:
        subp.runparts(runparts_path, exe_prefix=prefix)
    except Exception:
        log.warning(
            "Failed to run module %s (%s in %s)",
            name,
            SCRIPT_SUBDIR,
            runparts_path,
        )
        raise


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