#!/usr/bin/python

# Copyright (c) 2013, Jeroen Hoekx <jeroen.hoekx@dsquare.be>
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later

from __future__ import annotations


DOCUMENTATION = r"""
module: jboss
short_description: Deploy applications to JBoss
description:
  - Deploy applications to JBoss standalone using the filesystem.
extends_documentation_fragment:
  - community.general.attributes
attributes:
  check_mode:
    support: full
  diff_mode:
    support: none
options:
  deployment:
    required: true
    description:
      - The name of the deployment.
    type: str
  src:
    description:
      - The remote path of the application ear or war to deploy.
      - Required when O(state=present).
      - Ignored when O(state=absent).
    type: path
  deploy_path:
    default: /var/lib/jbossas/standalone/deployments
    description:
      - The location in the filesystem where the deployment scanner listens.
    type: path
  state:
    choices: [present, absent]
    default: "present"
    description:
      - Whether the application should be deployed or undeployed.
    type: str
notes:
  - The JBoss standalone deployment-scanner has to be enabled in C(standalone.xml).
  - The module can wait until O(deployment) file is deployed/undeployed by deployment-scanner. Duration of waiting time depends
    on scan-interval parameter from C(standalone.xml).
  - Ensure no identically named application is deployed through the JBoss CLI.
seealso:
  - name: WildFly reference
    description: Complete reference of the WildFly documentation.
    link: https://docs.wildfly.org
author:
  - Jeroen Hoekx (@jhoekx)
"""

EXAMPLES = r"""
- name: Deploy a hello world application to the default deploy_path
  community.general.jboss:
    src: /tmp/hello-1.0-SNAPSHOT.war
    deployment: hello.war
    state: present

- name: Update the hello world application to the non-default deploy_path
  community.general.jboss:
    src: /tmp/hello-1.1-SNAPSHOT.war
    deploy_path: /opt/wildfly/deployment
    deployment: hello.war
    state: present

- name: Undeploy the hello world application from the default deploy_path
  community.general.jboss:
    deployment: hello.war
    state: absent
"""

RETURN = r""" # """

import os
import time
from ansible.module_utils.basic import AnsibleModule


DEFAULT_DEPLOY_PATH = "/var/lib/jbossas/standalone/deployments"


def is_deployed(deploy_path, deployment):
    return os.path.exists(os.path.join(deploy_path, f"{deployment}.deployed"))


def is_undeployed(deploy_path, deployment):
    return os.path.exists(os.path.join(deploy_path, f"{deployment}.undeployed"))


def is_failed(deploy_path, deployment):
    return os.path.exists(os.path.join(deploy_path, f"{deployment}.failed"))


def main():
    module = AnsibleModule(
        argument_spec=dict(
            src=dict(type="path"),
            deployment=dict(type="str", required=True),
            deploy_path=dict(type="path", default=DEFAULT_DEPLOY_PATH),
            state=dict(type="str", choices=["absent", "present"], default="present"),
        ),
        required_if=[("state", "present", ("src",))],
        supports_check_mode=True,
    )

    result = dict(changed=False)

    src = module.params["src"]
    deployment = module.params["deployment"]
    deploy_path = module.params["deploy_path"]
    state = module.params["state"]

    if not os.path.exists(deploy_path):
        module.fail_json(msg="deploy_path does not exist.")

    if state == "absent" and src:
        module.warn("Parameter src is ignored when state=absent")
    elif state == "present" and not os.path.exists(src):
        module.fail_json(msg=f"Source file {src} does not exist.")

    deployed = is_deployed(deploy_path, deployment)

    # === when check_mode ===
    if module.check_mode:
        if state == "present":
            if not deployed:
                result["changed"] = True

            elif deployed:
                if module.sha1(src) != module.sha1(os.path.join(deploy_path, deployment)):
                    result["changed"] = True

        elif state == "absent" and deployed:
            result["changed"] = True

        module.exit_json(**result)
    # =======================

    if state == "present" and not deployed:
        if is_failed(deploy_path, deployment):
            # Clean up old failed deployment
            os.remove(os.path.join(deploy_path, f"{deployment}.failed"))

        module.preserved_copy(src, os.path.join(deploy_path, deployment))
        while not deployed:
            deployed = is_deployed(deploy_path, deployment)
            if is_failed(deploy_path, deployment):
                module.fail_json(msg=f"Deploying {deployment} failed.")
            time.sleep(1)
        result["changed"] = True

    if state == "present" and deployed:
        if module.sha1(src) != module.sha1(os.path.join(deploy_path, deployment)):
            os.remove(os.path.join(deploy_path, f"{deployment}.deployed"))
            module.preserved_copy(src, os.path.join(deploy_path, deployment))
            deployed = False
            while not deployed:
                deployed = is_deployed(deploy_path, deployment)
                if is_failed(deploy_path, deployment):
                    module.fail_json(msg=f"Deploying {deployment} failed.")
                time.sleep(1)
            result["changed"] = True

    if state == "absent" and deployed:
        os.remove(os.path.join(deploy_path, f"{deployment}.deployed"))
        while deployed:
            deployed = not is_undeployed(deploy_path, deployment)
            if is_failed(deploy_path, deployment):
                module.fail_json(msg=f"Undeploying {deployment} failed.")
            time.sleep(1)
        result["changed"] = True

    module.exit_json(**result)


if __name__ == "__main__":
    main()