#!/usr/bin/python3
import getpass
import hashlib
import importlib
import logging
import os
import platform
import sys
import traceback
from keyman_config.version import (
  __version__,
  __versionwithtag__,
  __versiongittag__,
  __majorversion__,
  __releaseversion__,
  __tier__,
  __pkgversion__,
  __environment__,
  __uploadsentry__
)

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gio, Gtk


class SentryErrorHandling:
    def __init__(self) -> None:
        self.settings = Gio.Settings.new('com.keyman.options')

    def initialize_sentry(self):
        (enabled, reason) = self.is_sentry_enabled()
        if not enabled:
            print(reason, file=sys.stderr)
            logging.info(reason)
            return (enabled, reason)
        else:
            try:
                self._sentry_sdk_initialize()
            except ImportError:
                try:
                    self._raven_initialize()
                except ImportError:
                    # even raven is not available. This is the case on Ubuntu 16.04. Just ignore.
                    print(_('Neither sentry-sdk nor raven is available. Not enabling Sentry error reporting.'),
                          file=sys.stderr)
                    logging.info('Neither sentry-sdk nor raven is available. Not enabling Sentry error reporting.')
                    return (False, _('Neither sentry-sdk nor raven is available. Not enabling Sentry error reporting.'))
            return (True, '')

    def is_sentry_enabled(self):
        if self._is_unit_test():
            return (False, 'Running unit tests, not reporting to Sentry')
        elif self._get_environ_nosentry():
            return (False, 'Not reporting to Sentry because KEYMAN_NOSENTRY environment variable set')
        elif not __uploadsentry__:
            return (False, f'Not reporting to Sentry because UPLOAD_SENTRY is false ({__environment__})')
        elif not self._get_setting():
            return (False, 'Not reporting to Sentry because disabled in GSettings')
        return (True, 'Reporting to Sentry')

    def is_sentry_disabled_by_variable(self):
        return self._get_environ_nosentry() or not __uploadsentry__

    def bind_checkbutton(self, button: Gtk.CheckButton):
        self.settings.bind("error-reporting", button, "active", Gio.SettingsBindFlags.NO_SENSITIVITY)
        self.settings.connect("changed::error-reporting", self._on_sentry_reporting_toggled)

    def set_enabled(self, enabled):
        assert not self.is_sentry_disabled_by_variable()
        was_enabled = self.is_sentry_enabled()
        self._save_setting(enabled)
        if enabled != was_enabled:
            self._handle_enabled(enabled)

    def _get_environ_nosentry(self):
        keyman_nosentry = os.environ.get('KEYMAN_NOSENTRY')
        return keyman_nosentry and (int(keyman_nosentry) == 1)

    def _is_unit_test(self):  # sourcery skip: use-any, use-next
        # The suggested refactorings (using any() or next()) don't work
        # when testing on Ubuntu 20.04
        for line in traceback.format_stack():
            if '/unittest/' in line:
                return True
        return False

    def _handle_enabled(self, enabled):
        if enabled:
            self.initialize_sentry()
        else:
            self._close_sentry()

    def _save_setting(self, enabled: bool):
        self.settings.set_boolean('error-reporting', enabled)

    def _get_setting(self) -> bool:
        return self.settings.get_boolean('error-reporting')

    def _on_sentry_reporting_toggled(self, settings, key):
        self._handle_enabled(self.settings.get_boolean('error-reporting'))

    def _close_sentry(self):
        from sentry_sdk import Hub
        logging.info("Shutting down Sentry error reporting")
        client = Hub.current.client
        if client is not None:
            client.close(timeout=2.0)

    def _sentry_sdk_initialize(self):
        # Try new sentry-sdk first
        sentry_sdk = importlib.import_module('sentry_sdk')
        from sentry_sdk import configure_scope, set_user
        from sentry_sdk.integrations.logging import LoggingIntegration

        sentry_logging = LoggingIntegration(
          level=logging.INFO,           # Capture info and above as breadcrumbs
          event_level=logging.CRITICAL  # Send critical errors as events
        )
        SentryUrl = "https://1d0edbf2d0dc411b87119b6e92e2c357@o1005580.ingest.sentry.io/5983525"
        sentry_sdk.init(
          dsn=SentryUrl,
          environment=__environment__,
          release=__versiongittag__,
          integrations=[sentry_logging],
          before_send=self._before_send
        )
        hash = hashlib.md5()
        hash.update(getpass.getuser().encode())
        set_user({'id': hash.hexdigest()})
        with configure_scope() as scope:
            scope.set_tag("app", os.path.basename(sys.argv[0]))
            scope.set_tag("pkgversion", __pkgversion__)
            scope.set_tag("platform", platform.platform())
            scope.set_tag("system", platform.system())
            scope.set_tag("tier", __tier__)
            scope.set_tag("device", platform.node())
            try:
                os_release = platform.freedesktop_os_release()
                scope.set_tag('os', os_release['PRETTY_NAME'])
                scope.set_tag('os.name', os_release['NAME'])
                if 'VERSION' in os_release:
                    scope.set_tag('os.version', os_release['VERSION'])
            except OSError as e:
                logging.debug(f'System does not have os_release file: {e.strerror}')
            except AttributeError:
                logging.debug('System does not have platform.freedesktop_os_release() method')
            except:
                logging.debug(
                    'Got exception trying to access platform.freedesktop_os_release()  method or os_release information')
        logging.info("Initialized Sentry error reporting")

    def _raven_initialize(self):
        # sentry-sdk is not available, so use older raven
        raven = importlib.import_module('raven')
        from raven import Client

        # Note, legacy raven API requires secret (https://github.com/keymanapp/keyman/pull/5787#discussion_r721457909)
        SentryUrl = "https://1d0edbf2d0dc411b87119b6e92e2c357:e6d5a81ee6944fc79bd9f0cbb1f2c2a4@o1005580.ingest.sentry.io/5983525"
        client = Client(SentryUrl, environment=__environment__, release=__versiongittag__)
        client.user_context({'id': hash(getpass.getuser())})
        client.tags_context({
          'app': os.path.basename(sys.argv[0]),
          'pkgversion': __pkgversion__,
          'platform': platform.platform(),
          'system': platform.system(),
          'tier': __tier__,
        })
        logging.info("Initialized Sentry error reporting (raven)")

    def _before_send(self, event, hint):
        if 'exc_info' in hint:
            exc_type, exc_value, tb = hint['exc_info']
            if isinstance(exc_value, KeyboardInterrupt):
                # Ignore KeyboardInterrupt exception
                return None
        return event