# Copyright (c) 2018, Samir Musali <samir.musali@logdna.com>
# 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"""
author: Unknown (!UNKNOWN)
name: logdna
type: notification
short_description: Sends playbook logs to LogDNA
description:
  - This callback reports logs from playbook actions, tasks, and events to LogDNA (U(https://app.logdna.com)).
requirements:
  - LogDNA Python Library (U(https://github.com/logdna/python))
  - whitelisting in configuration
options:
  conf_key:
    required: true
    description: LogDNA Ingestion Key.
    type: string
    env:
      - name: LOGDNA_INGESTION_KEY
    ini:
      - section: callback_logdna
        key: conf_key
  plugin_ignore_errors:
    required: false
    description: Whether to ignore errors on failing or not.
    type: boolean
    env:
      - name: ANSIBLE_IGNORE_ERRORS
    ini:
      - section: callback_logdna
        key: plugin_ignore_errors
    default: false
  conf_hostname:
    required: false
    description: Alternative Host Name; the current host name by default.
    type: string
    env:
      - name: LOGDNA_HOSTNAME
    ini:
      - section: callback_logdna
        key: conf_hostname
  conf_tags:
    required: false
    description: Tags.
    type: string
    env:
      - name: LOGDNA_TAGS
    ini:
      - section: callback_logdna
        key: conf_tags
    default: ansible
"""

import json
import logging
import socket
from uuid import getnode

from ansible.parsing.ajson import AnsibleJSONEncoder
from ansible.plugins.callback import CallbackBase

try:
    from logdna import LogDNAHandler

    HAS_LOGDNA = True
except ImportError:
    HAS_LOGDNA = False


# Getting MAC Address of system:
def get_mac():
    mac = f"{getnode():012x}"
    return ":".join(map(lambda index: mac[index : index + 2], range(int(len(mac) / 2))))


# Getting hostname of system:
def get_hostname():
    return str(socket.gethostname()).split(".local", 1)[0]


# Getting IP of system:
def get_ip():
    try:
        return socket.gethostbyname(get_hostname())
    except Exception:
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        try:
            s.connect(("10.255.255.255", 1))
            IP = s.getsockname()[0]
        except Exception:
            IP = "127.0.0.1"
        finally:
            s.close()
        return IP


# Is it JSON?
def isJSONable(obj):
    try:
        json.dumps(obj, sort_keys=True, cls=AnsibleJSONEncoder)
        return True
    except Exception:
        return False


# LogDNA Callback Module:
class CallbackModule(CallbackBase):
    CALLBACK_VERSION = 0.1
    CALLBACK_TYPE = "notification"
    CALLBACK_NAME = "community.general.logdna"
    CALLBACK_NEEDS_WHITELIST = True

    def __init__(self, display=None):
        super().__init__(display=display)

        self.disabled = True
        self.playbook_name = None
        self.playbook = None
        self.conf_key = None
        self.plugin_ignore_errors = None
        self.conf_hostname = None
        self.conf_tags = None

    def set_options(self, task_keys=None, var_options=None, direct=None):
        super().set_options(task_keys=task_keys, var_options=var_options, direct=direct)

        self.conf_key = self.get_option("conf_key")
        self.plugin_ignore_errors = self.get_option("plugin_ignore_errors")
        self.conf_hostname = self.get_option("conf_hostname")
        self.conf_tags = self.get_option("conf_tags")
        self.mac = get_mac()
        self.ip = get_ip()

        if self.conf_hostname is None:
            self.conf_hostname = get_hostname()

        self.conf_tags = self.conf_tags.split(",")

        if HAS_LOGDNA:
            self.log = logging.getLogger("logdna")
            self.log.setLevel(logging.INFO)
            self.options = {"hostname": self.conf_hostname, "mac": self.mac, "index_meta": True}
            self.log.addHandler(LogDNAHandler(self.conf_key, self.options))
            self.disabled = False
        else:
            self.disabled = True
            self._display.warning("WARNING:\nPlease, install LogDNA Python Package: `pip install logdna`")

    def metaIndexing(self, meta):
        invalidKeys = []
        ninvalidKeys = 0
        for key, value in meta.items():
            if not isJSONable(value):
                invalidKeys.append(key)
                ninvalidKeys += 1
        if ninvalidKeys > 0:
            for key in invalidKeys:
                del meta[key]
            meta["__errors"] = f"These keys have been sanitized: {', '.join(invalidKeys)}"
        return meta

    def sanitizeJSON(self, data):
        try:
            return json.loads(json.dumps(data, sort_keys=True, cls=AnsibleJSONEncoder))
        except Exception:
            return {"warnings": ["JSON Formatting Issue", json.dumps(data, sort_keys=True, cls=AnsibleJSONEncoder)]}

    def flush(self, log, options):
        if HAS_LOGDNA:
            self.log.info(json.dumps(log), options)

    def sendLog(self, host, category, logdata):
        options = {"app": "ansible", "meta": {"playbook": self.playbook_name, "host": host, "category": category}}
        logdata["info"].pop("invocation", None)
        warnings = logdata["info"].pop("warnings", None)
        if warnings is not None:
            self.flush({"warn": warnings}, options)
        self.flush(logdata, options)

    def v2_playbook_on_start(self, playbook):
        self.playbook = playbook
        self.playbook_name = playbook._file_name

    def v2_playbook_on_stats(self, stats):
        result = dict()
        for host in stats.processed.keys():
            result[host] = stats.summarize(host)
        self.sendLog(self.conf_hostname, "STATS", {"info": self.sanitizeJSON(result)})

    def runner_on_failed(self, host, res, ignore_errors=False):
        if self.plugin_ignore_errors:
            ignore_errors = self.plugin_ignore_errors
        self.sendLog(host, "FAILED", {"info": self.sanitizeJSON(res), "ignore_errors": ignore_errors})

    def runner_on_ok(self, host, res):
        self.sendLog(host, "OK", {"info": self.sanitizeJSON(res)})

    def runner_on_unreachable(self, host, res):
        self.sendLog(host, "UNREACHABLE", {"info": self.sanitizeJSON(res)})

    def runner_on_async_failed(self, host, res, jid):
        self.sendLog(host, "ASYNC_FAILED", {"info": self.sanitizeJSON(res), "job_id": jid})

    def runner_on_async_ok(self, host, res, jid):
        self.sendLog(host, "ASYNC_OK", {"info": self.sanitizeJSON(res), "job_id": jid})