#!/usr/bin/python
#
# Scaleway VPC management module
#
# Copyright (c) Ansible project
# 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: scaleway_private_network
short_description: Scaleway private network management
version_added: 4.5.0
author: Pascal MANGIN (@pastral)
description:
  - This module manages private network on Scaleway account (U(https://developer.scaleway.com)).
extends_documentation_fragment:
  - community.general.scaleway
  - community.general.attributes
  - community.general.scaleway.actiongroup_scaleway

attributes:
  check_mode:
    support: full
  diff_mode:
    support: none
  action_group:
    version_added: 11.3.0

options:
  state:
    type: str
    description:
      - Indicate desired state of the VPC.
    default: present
    choices:
      - present
      - absent

  project:
    type: str
    description:
      - Project identifier.
    required: true

  region:
    type: str
    description:
      - Scaleway region to use (for example V(par1)).
    required: true
    choices:
      - ams1
      - EMEA-NL-EVS
      - ams2
      - ams3
      - par1
      - EMEA-FR-PAR1
      - par2
      - EMEA-FR-PAR2
      - par3
      - waw1
      - EMEA-PL-WAW1
      - waw2
      - waw3

  name:
    type: str
    description:
      - Name of the VPC.
  tags:
    type: list
    elements: str
    description:
      - List of tags to apply to the instance.
    default: []
"""

EXAMPLES = r"""
- name: Create an private network
  community.general.scaleway_private_network:
    project: '{{ scw_project }}'
    name: 'vpc_one'
    state: present
    region: par1
  register: vpc_creation_task

- name: Make sure private network with name 'foo' is deleted in region par1
  community.general.scaleway_private_network:
    name: 'foo'
    state: absent
    region: par1
"""

RETURN = r"""
scaleway_private_network:
  description: Information on the VPC.
  returned: success when O(state=present)
  type: dict
  sample:
    {
      "created_at": "2022-01-15T11:11:12.676445Z",
      "id": "12345678-f1e6-40ec-83e5-12345d67ed89",
      "name": "network",
      "organization_id": "a123b4cd-ef5g-678h-90i1-jk2345678l90",
      "project_id": "a123b4cd-ef5g-678h-90i1-jk2345678l90",
      "tags": [
        "tag1",
        "tag2",
        "tag3",
        "tag4",
        "tag5"
      ],
      "updated_at": "2022-01-15T11:12:04.624837Z",
      "zone": "fr-par-2"
    }
"""

from ansible.module_utils.basic import AnsibleModule

from ansible_collections.community.general.plugins.module_utils.scaleway import (
    SCALEWAY_LOCATION,
    Scaleway,
    scaleway_argument_spec,
)


def get_private_network(api, name, page=1):
    page_size = 10
    response = api.get(
        "private-networks", params={"name": name, "order_by": "name_asc", "page": page, "page_size": page_size}
    )
    if not response.ok:
        msg = f"Error during get private network creation: {response.info['msg']}: '{response.json['message']}' ({response.json})"
        api.module.fail_json(msg=msg)

    if response.json["total_count"] == 0:
        return None

    i = 0
    while i < len(response.json["private_networks"]):
        if response.json["private_networks"][i]["name"] == name:
            return response.json["private_networks"][i]
        i += 1

    # search on next page if needed
    if (page * page_size) < response.json["total_count"]:
        return get_private_network(api, name, page + 1)

    return None


def present_strategy(api, wished_private_network):
    changed = False
    private_network = get_private_network(api, wished_private_network["name"])
    if private_network is not None:
        if set(wished_private_network["tags"]) == set(private_network["tags"]):
            return changed, private_network
        else:
            # private network need to be updated
            data = {"name": wished_private_network["name"], "tags": wished_private_network["tags"]}
            changed = True
            if api.module.check_mode:
                return changed, {"status": "private network would be updated"}

            response = api.patch(path=f"private-networks/{private_network['id']}", data=data)
            if not response.ok:
                api.module.fail_json(msg=f"Error updating private network [{response.status_code}: {response.json}]")

            return changed, response.json

    # private network need to be create
    changed = True
    if api.module.check_mode:
        return changed, {"status": "private network would be created"}

    data = {
        "name": wished_private_network["name"],
        "project_id": wished_private_network["project"],
        "tags": wished_private_network["tags"],
    }

    response = api.post(path="private-networks/", data=data)

    if not response.ok:
        api.module.fail_json(msg=f"Error creating private network [{response.status_code}: {response.json}]")

    return changed, response.json


def absent_strategy(api, wished_private_network):
    changed = False
    private_network = get_private_network(api, wished_private_network["name"])
    if private_network is None:
        return changed, {}

    changed = True
    if api.module.check_mode:
        return changed, {"status": "private network would be destroyed"}

    response = api.delete(f"private-networks/{private_network['id']}")

    if not response.ok:
        api.module.fail_json(msg=f"Error deleting private network [{response.status_code}: {response.json}]")

    return changed, response.json


def core(module):
    wished_private_network = {
        "project": module.params["project"],
        "tags": module.params["tags"],
        "name": module.params["name"],
    }

    region = module.params["region"]
    module.params["api_url"] = SCALEWAY_LOCATION[region]["api_endpoint_vpc"]

    api = Scaleway(module=module)
    if module.params["state"] == "absent":
        changed, summary = absent_strategy(api=api, wished_private_network=wished_private_network)
    else:
        changed, summary = present_strategy(api=api, wished_private_network=wished_private_network)
    module.exit_json(changed=changed, scaleway_private_network=summary)


def main():
    argument_spec = scaleway_argument_spec()
    argument_spec.update(
        dict(
            state=dict(default="present", choices=["absent", "present"]),
            project=dict(required=True),
            region=dict(required=True, choices=list(SCALEWAY_LOCATION.keys())),
            tags=dict(type="list", elements="str", default=[]),
            name=dict(),
        )
    )
    module = AnsibleModule(
        argument_spec=argument_spec,
        supports_check_mode=True,
    )

    core(module)


if __name__ == "__main__":
    main()
