import { expect } from 'chai';
import { beforeEach, describe, it } from 'mocha';
import { Configuration } from '../../configuration/Configuration';
import { ExceptionlessClient } from '../../ExceptionlessClient';
import { IEvent } from '../../models/IEvent';
import { DefaultErrorParser } from '../../services/DefaultErrorParser';
import { EventPluginContext } from '../EventPluginContext';
import { EventExclusionPlugin } from './EventExclusionPlugin';

beforeEach(() => {
  Configuration.defaults.updateSettingsWhenIdleInterval = -1;
});

describe('EventExclusionPlugin', () => {
  describe('should exclude log levels', () => {
    function run(source: string, level: string, settingKey: string, settingValue: string): boolean {
      const client = new ExceptionlessClient();
      if (settingKey) {
        client.config.settings[settingKey] = settingValue;
      }

      const ev: IEvent = { type: 'log', source, data: {} };
      if (level) {
        ev.data['@level'] = level;
      }

      const context = new EventPluginContext(client, ev);
      const plugin = new EventExclusionPlugin();
      plugin.run(context);

      return context.cancelled;
    }

    it('<null>', () => expect(run(null, null, null, null)).to.be.false);
    it('Test', () => expect(run('Test', null, null, null)).to.be.false);
    it('[Trace] Test', () => expect(run('Test', 'Trace', null, null)).to.be.false);
    it('[Off] Test', () => expect(run('Test', 'Off', null, null)).to.be.true);
    it('[Abc] Test', () => expect(run('Test', 'Abc', null, null)).to.be.false);
    it('[Trace] <null> (source min level: Off', () => expect(run(null, 'Trace', '@@log:', 'Off')).to.be.true);
    it('[Trace] <null> (global min level: Off', () => expect(run(null, 'Trace', '@@log:*', 'Off')).to.be.true);
    it('[Trace] <undefined> (source min level: Off', () => expect(run(undefined, 'Trace', '@@log:', 'Off')).to.be.true);
    it('[Trace] <undefined> (global min level: Off', () => expect(run(undefined, 'Trace', '@@log:*', 'Off')).to.be.true);
    it('[Trace] <empty> (source min level: Off', () => expect(run('', 'Trace', '@@log:', 'Off')).to.be.true); // Becomes Global Log Level
    it('[Trace] <empty> (global min level: Off', () => expect(run('', 'Trace', '@@log:*', 'Off')).to.be.true);
    it('[Trace] Test (source min level: false)', () => expect(run('Test', 'Trace', '@@log:Test', 'false')).to.be.true);
    it('[Trace] Test (source min level: no)', () => expect(run('Test', 'Trace', '@@log:Test', 'no')).to.be.true);
    it('[Trace] Test (source min level: 0)', () => expect(run('Test', 'Trace', '@@log:Test', '0')).to.be.true);
    it('[Trace] Test (source min level: true)', () => expect(run('Test', 'Trace', '@@log:Test', 'true')).to.be.false);
    it('[Trace] Test (source min level: yes)', () => expect(run('Test', 'Trace', '@@log:Test', 'yes')).to.be.false);
    it('[Trace] Test (source min level: 1)', () => expect(run('Test', 'Trace', '@@log:Test', '1')).to.be.false);
    it('[Trace] Test (source min level: Debug)', () => expect(run('Test', 'Trace', '@@log:Test', 'Debug')).to.be.true);
    it('[Info] Test (source min level: Debug)', () => expect(run('Test', 'Info', '@@log:Test', 'Debug')).to.be.false);
    it('[Trace] Test (global min level: Debug)', () => expect(run('Test', 'Trace', '@@log:*', 'Debug')).to.be.true);
    it('[Warn] Test (global min level: Debug)', () => expect(run('Test', 'Warn', '@@log:*', 'Debug')).to.be.false);
  });

  describe('should exclude log levels with info default', () => {
    function run(source: string, level: string, settingKey: string, settingValue: string): boolean {
      const client = new ExceptionlessClient();
      client.config.settings['@@log:*'] = 'Info';
      if (settingKey) {
        client.config.settings[settingKey] = settingValue;
      }

      const ev: IEvent = { type: 'log', source, data: {} };
      if (level) {
        ev.data['@level'] = level;
      }

      const context = new EventPluginContext(client, ev);
      const plugin = new EventExclusionPlugin();
      plugin.run(context);

      return context.cancelled;
    }

    it('<null>', () => expect(run(null, null, null, null)).to.be.false);
    it('Test', () => expect(run('Test', null, null, null)).to.be.false);
    it('[Trace] Test', () => expect(run('Test', 'Trace', null, null)).to.be.true);
    it('[Warn] Test', () => expect(run('Test', 'Warn', null, null)).to.be.false);
    it('[Error] Test (source min level: Debug)', () => expect(run('Test', 'Error', '@@log:Test', 'Debug')).to.be.false);
    it('[Debug] Test (source min level: Debug)', () => expect(run('Test', 'Debug', '@@log:Test', 'Debug')).to.be.false);
  });

  describe('should resolve null and undefined log source levels in reverse settings order', () => {
    const plugin = new EventExclusionPlugin();
    const settings: Record<string, string> = { '@@log:': 'Info', '@@log:*': 'Debug' };

    it('<null> (global min level: info)', () => expect(plugin.getMinLogLevel(settings, null)).to.be.equal(2));
    it('<undefined> (global min level: info)', () => expect(plugin.getMinLogLevel(settings, undefined)).to.be.equal(2));
    it('<empty> (source min level: info)', () => expect(plugin.getMinLogLevel(settings, '')).to.be.equal(2));
    it('* (global min level: debug)', () => expect(plugin.getMinLogLevel(settings, '*')).to.be.equal(1));
  });

  describe('should resolve log source levels and respect settings order', () => {
    const plugin = new EventExclusionPlugin();
    const settings = { '@@log:*': 'Debug', '@@log:': 'Info' };

    it('<empty> (source min level: info)', () => expect(plugin.getMinLogLevel(settings, '')).to.be.equal(2));
    it('* (global min level: debug)', () => expect(plugin.getMinLogLevel(settings, '*')).to.be.equal(1));
  });

  describe('should fallback to global log level setting', () => {
    const plugin = new EventExclusionPlugin();
    const settings = {
      '@@log:*': 'Fatal',
    };

    it('<undefined> (source min level: off)', () => expect(plugin.getMinLogLevel(settings, undefined)).to.be.equal(5));
    it('<null> (source min level: off)', () => expect(plugin.getMinLogLevel(settings, null)).to.be.equal(5));
    it('<empty> (source min level: off)', () => expect(plugin.getMinLogLevel(settings, '')).to.be.equal(5));
    it('* (source min level: off)', () => expect(plugin.getMinLogLevel(settings, '*')).to.be.equal(5));
    it('abc (source min level: off)', () => expect(plugin.getMinLogLevel(settings, 'abc')).to.be.equal(5));
  });

  describe('should respect min log levels settings order with global settings', () => {
    const plugin = new EventExclusionPlugin();
    const settings = {
      '@@log:*': 'Fatal',
      '@@log:': 'Debug',
      '@@log:abc*': 'Off',
      '@@log:abc.de*': 'Debug',
      '@@log:abc.def*': 'Info',
      '@@log:abc.def.ghi': 'Trace'
    };

    it('<undefined> (source min level: debug)', () => expect(plugin.getMinLogLevel(settings, undefined)).to.be.equal(1));
    it('<null> (source min level: debug)', () => expect(plugin.getMinLogLevel(settings, null)).to.be.equal(1));
    it('<empty> (source min level: debug)', () => expect(plugin.getMinLogLevel(settings, '')).to.be.equal(1));
    it('fallback (global min level: debug)', () => expect(plugin.getMinLogLevel(settings, 'fallback')).to.be.equal(5));
    it('abc (source min level: off)', () => expect(plugin.getMinLogLevel(settings, 'abc')).to.be.equal(6));
    it('abc.def (source min level: info)', () => expect(plugin.getMinLogLevel(settings, 'abc.def')).to.be.equal(2));
    it('abc.def.random (source min level: info)', () => expect(plugin.getMinLogLevel(settings, 'abc.def.random')).to.be.equal(2));
    it('abc.def.ghi (source min level: trace)', () => expect(plugin.getMinLogLevel(settings, 'abc.def.ghi')).to.be.equal(0));
  });

  describe('should respect min log levels settings order', () => {
    const plugin = new EventExclusionPlugin();
    const settings = {
      '@@log:abc.def.ghi': 'Trace',
      '@@log:abc.def*': 'Info',
      '@@log:abc*': 'Off'
    };

    it('abc (source min level: off)', () => expect(plugin.getMinLogLevel(settings, 'abc')).to.be.equal(6));
    it('abc.def (source min level: info)', () => expect(plugin.getMinLogLevel(settings, 'abc.def')).to.be.equal(2));
    it('abc.def.ghi (source min level: trace)', () => expect(plugin.getMinLogLevel(settings, 'abc.def.ghi')).to.be.equal(0));
  });

  describe('should exclude source type', () => {
    function run(type: string, source: string, settingKey: string, settingValue: string): boolean {
      const client = new ExceptionlessClient();

      if (settingKey) {
        client.config.settings[settingKey] = settingValue;
      }

      const context = new EventPluginContext(client, { type, source, data: {} });
      const plugin = new EventExclusionPlugin();
      plugin.run(context);

      return context.cancelled;
    }

    it('<null>', () => expect(run(null, null, null, null)).to.be.false);
    it('usage=<null>', () => expect(run('usage', null, null, null)).to.be.false);
    it('usage=test', () => expect(run('usage', 'test', null, null)).to.be.false);
    it('usage=test on', () => expect(run('usage', 'test', '@@usage:Test', 'true')).to.be.false);
    it('usage=test off', () => expect(run('usage', 'test', '@@usage:Test', 'false')).to.be.true);
    it('usage=test (global off)', () => expect(run('usage', 'test', '@@usage:*', 'false')).to.be.true);
    it('404=/unknown (global off)', () => expect(run('404', '/unknown', '@@404:*', 'false')).to.be.true);
    it('404=/unknown on', () => expect(run('404', '/unknown', '@@404:/unknown', 'true')).to.be.false);
    it('404=/unknown off', () => expect(run('404', '/unknown', '@@404:/unknown', 'false')).to.be.true);
    it('404=<null> off', () => expect(run('404', null, '@@404:*', 'false')).to.be.true);
    it('404=<undefined> empty off', () => expect(run('404', undefined, '@@404:', 'false')).to.be.true);
    it('404=<undefined> global off', () => expect(run('404', undefined, '@@404:*', 'false')).to.be.true);
    it('404=<null> empty off', () => expect(run('404', null, '@@404:', 'false')).to.be.true);
    it('404=<empty> off', () => expect(run('404', '', '@@404:', 'false')).to.be.true);
  });

  describe('should exclude exception type', () => {
    function createException() {
      function throwError() {
        throw new ReferenceError('This is a test');
      }

      try {
        throwError();
      } catch (e) {
        return e;
      }
    }

    function run(settingKey: string): boolean {
      const client = new ExceptionlessClient();

      if (settingKey) {
        client.config.settings[settingKey] = 'false';
      }

      const errorParser = new DefaultErrorParser();
      const context = new EventPluginContext(client, { type: 'error', data: {} });
      context.event.data['@error'] = errorParser.parse(context, createException());

      const plugin = new EventExclusionPlugin();
      plugin.run(context);
      return context.cancelled;
    }

    it('<null>', () => expect(run(null)).to.be.false);
    it('@@error:Error', () => expect(run('@@error:Error')).to.be.false);
    it('@@error:ReferenceError', () => expect(run('@@error:ReferenceError')).to.be.true);
    it('@@error:*Error', () => expect(run('@@error:*Error')).to.be.true);
    it('@@error:*', () => expect(run('@@error:*')).to.be.true);
  });
});