import { ErrorV3 } from '@growi/core/dist/models';

import { SupportedAction } from '~/interfaces/activity';
import { configManager } from '~/server/service/config-manager';
import loggerFactory from '~/utils/logger';

import { generateAddActivityMiddleware } from '../../middlewares/add-activity';
import { apiV3FormValidator } from '../../middlewares/apiv3-form-validator';


const logger = loggerFactory('growi:routes:apiv3:markdown-setting');

const express = require('express');

const router = express.Router();

const { body } = require('express-validator');

const validator = {
  lineBreak: [
    body('isEnabledLinebreaks').isBoolean(),
    body('isEnabledLinebreaksInComments').isBoolean(),
  ],
  indent: [
    body('adminPreferredIndentSize').isIn([2, 4]),
    body('isIndentSizeForced').isBoolean(),
  ],
  xssSetting: [
    body('isEnabledXss').isBoolean(),
    body('tagWhitelist').isArray(),
    body('attrWhitelist').isString(),
  ],
};


/**
 * @swagger
 *
 *  components:
 *    schemas:
 *      MarkdownParams:
 *        description: MarkdownParams
 *        type: object
 *        properties:
 *          isEnabledLinebreaks:
 *            type: boolean
 *            description: enable lineBreak
 *          isEnabledLinebreaksInComments:
 *            type: boolean
 *            description: enable lineBreak in comment
 *          adminPreferredIndentSize:
 *            type: number
 *            description: preferred indent size
 *          isIndentSizeForced:
 *            type: boolean
 *            description: force indent size
 *          isEnabledXss:
 *            type: boolean
 *            description: enable xss
 *          xssOption:
 *            type: number
 *            description: number of xss option
 *          tagWhitelist:
 *            type: array
 *            description: array of tag whitelist
 *            items:
 *              type: string
 *              description: tag whitelist
 *          attrWhitelist:
 *            type: string
 *            description: attr whitelist
 *      LineBreakParams:
 *        description: LineBreakParams
 *        type: object
 *        properties:
 *          isEnabledLinebreaks:
 *            type: boolean
 *            description: enable lineBreak
 *          isEnabledLinebreaksInComments:
 *            type: boolean
 *            description: enable lineBreak in comment
 *      PresentationParams:
 *        description: PresentationParams
 *        type: object
 *        properties:
 *          pageBreakSeparator:
 *            type: number
 *            description: number of pageBreakSeparator
 *          pageBreakCustomSeparator:
 *            type: string
 *            description: string of pageBreakCustomSeparator
 *      XssParams:
 *        description: XssParams
 *        type: object
 *        properties:
 *          isEnabledXss:
 *            type: boolean
 *            description: enable xss
 *          xssOption:
 *            type: number
 *            description: number of xss option
 *          tagWhitelist:
 *            type: array
 *            description: array of tag whitelist
 *            items:
 *              type: string
 *              description: tag whitelist
 *          attrWhitelist:
 *            type: string
 *            description: attr whitelist
 *      IndentParams:
 *        description: IndentParams
 *        type: object
 *        properties:
 *          adminPreferredIndentSize:
 *            type: number
 *            description: preferred indent size
 *          isIndentSizeForced:
 *            type: boolean
 *            description: force indent size
 */

/** @param {import('~/server/crowi').default} crowi Crowi instance */
module.exports = (crowi) => {
  const loginRequiredStrictly = require('../../middlewares/login-required')(crowi);
  const adminRequired = require('../../middlewares/admin-required')(crowi);
  const addActivity = generateAddActivityMiddleware(crowi);

  const activityEvent = crowi.event('activity');

  /**
   * @swagger
   *
   *    /markdown-setting:
   *      get:
   *        tags: [MarkDownSetting]
   *        security:
   *          - cookieAuth: []
   *        summary: Get markdown parameters
   *        responses:
   *          200:
   *            description: params of markdown
   *            content:
   *              application/json:
   *                schema:
   *                  properties:
   *                    markdownParams:
   *                      type: object
   *                      description: markdown params
   *                      $ref: '#/components/schemas/MarkdownParams'
   */
  router.get('/', loginRequiredStrictly, adminRequired, async(req, res) => {
    const markdownParams = {
      isEnabledLinebreaks: await crowi.configManager.getConfig('markdown:isEnabledLinebreaks'),
      isEnabledLinebreaksInComments: await crowi.configManager.getConfig('markdown:isEnabledLinebreaksInComments'),
      adminPreferredIndentSize: await crowi.configManager.getConfig('markdown:adminPreferredIndentSize'),
      isIndentSizeForced: await crowi.configManager.getConfig('markdown:isIndentSizeForced'),
      isEnabledXss: await crowi.configManager.getConfig('markdown:rehypeSanitize:isEnabledPrevention'),
      xssOption: await crowi.configManager.getConfig('markdown:rehypeSanitize:option'),
      tagWhitelist: await crowi.configManager.getConfig('markdown:rehypeSanitize:tagNames'),
      attrWhitelist: await crowi.configManager.getConfig('markdown:rehypeSanitize:attributes'),
    };

    return res.apiv3({ markdownParams });
  });

  /**
   * @swagger
   *
   *    /markdown-setting/lineBreak:
   *      put:
   *        tags: [MarkDownSetting]
   *        security:
   *          - cookieAuth: []
   *        summary: Update lineBreak setting
   *        requestBody:
   *          required: true
   *          content:
   *            application/json:
   *              schema:
   *                $ref: '#/components/schemas/LineBreakParams'
   *        responses:
   *          200:
   *            description: Succeeded to update lineBreak setting
   *            content:
   *              application/json:
   *                schema:
   *                  type: object
   *                  properties:
   *                    lineBreaksParams:
   *                      type: object
   *                      $ref: '#/components/schemas/LineBreakParams'
   */
  router.put('/lineBreak', loginRequiredStrictly, adminRequired, addActivity, validator.lineBreak, apiV3FormValidator, async(req, res) => {

    const requestLineBreakParams = {
      'markdown:isEnabledLinebreaks': req.body.isEnabledLinebreaks,
      'markdown:isEnabledLinebreaksInComments': req.body.isEnabledLinebreaksInComments,
    };

    try {
      await configManager.updateConfigs(requestLineBreakParams);
      const lineBreaksParams = {
        isEnabledLinebreaks: await crowi.configManager.getConfig('markdown:isEnabledLinebreaks'),
        isEnabledLinebreaksInComments: await crowi.configManager.getConfig('markdown:isEnabledLinebreaksInComments'),
      };

      const parameters = { action: SupportedAction.ACTION_ADMIN_MARKDOWN_LINE_BREAK_UPDATE };
      activityEvent.emit('update', res.locals.activity._id, parameters);

      return res.apiv3({ lineBreaksParams });
    }
    catch (err) {
      const msg = 'Error occurred in updating lineBreak';
      logger.error('Error', err);
      return res.apiv3Err(new ErrorV3(msg, 'update-lineBreak-failed'));
    }

  });

  /**
   * @swagger
   *
   *    /markdown-setting/indent:
   *      put:
   *        tags: [MarkDownSetting]
   *        security:
   *          - cookieAuth: []
   *        summary: Update indent setting
   *        requestBody:
   *          required: true
   *          content:
   *            application/json:
   *              schema:
   *                $ref: '#/components/schemas/IndentParams'
   *        responses:
   *          200:
   *            description: Succeeded to update indent setting
   *            content:
   *              application/json:
   *                schema:
   *                  type: object
   *                  properties:
   *                    indentParams:
   *                      type: object
   *                      description: indent params
   *                      $ref: '#/components/schemas/IndentParams'
   */
  router.put('/indent', loginRequiredStrictly, adminRequired, addActivity, validator.indent, apiV3FormValidator, async(req, res) => {

    const requestIndentParams = {
      'markdown:adminPreferredIndentSize': req.body.adminPreferredIndentSize,
      'markdown:isIndentSizeForced': req.body.isIndentSizeForced,
    };

    try {
      await configManager.updateConfigs(requestIndentParams);
      const indentParams = {
        adminPreferredIndentSize: await crowi.configManager.getConfig('markdown:adminPreferredIndentSize'),
        isIndentSizeForced: await crowi.configManager.getConfig('markdown:isIndentSizeForced'),
      };

      const parameters = { action: SupportedAction.ACTION_ADMIN_MARKDOWN_INDENT_UPDATE };
      activityEvent.emit('update', res.locals.activity._id, parameters);

      return res.apiv3({ indentParams });
    }
    catch (err) {
      const msg = 'Error occurred in updating indent';
      logger.error('Error', err);
      return res.apiv3Err(new ErrorV3(msg, 'update-indent-failed'));
    }

  });

  /**
   * @swagger
   *
   *    /markdown-setting/xss:
   *      put:
   *        tags: [MarkDownSetting]
   *        security:
   *          - cookieAuth: []
   *        summary: Update XSS setting
   *        description: Update xss
   *        requestBody:
   *          required: true
   *          content:
   *            application/json:
   *              schema:
   *                $ref: '#/components/schemas/XssParams'
   *        responses:
   *          200:
   *            description: Succeeded to update xss setting
   *            content:
   *              application/json:
   *                schema:
   *                  $ref: '#/components/schemas/XssParams'
   */
  router.put('/xss', loginRequiredStrictly, adminRequired, addActivity, validator.xssSetting, apiV3FormValidator, async(req, res) => {
    if (req.body.isEnabledXss && req.body.xssOption == null) {
      return res.apiv3Err(new ErrorV3('xss option is required'));
    }

    try {
      JSON.parse(req.body.attrWhitelist);
    }
    catch (err) {
      const msg = 'Error occurred in updating xss';
      logger.error('Error', err);
      return res.apiv3Err(new ErrorV3(msg, 'update-xss-failed'));
    }

    const reqestXssParams = {
      'markdown:rehypeSanitize:isEnabledPrevention': req.body.isEnabledXss,
      'markdown:rehypeSanitize:option': req.body.xssOption,
      'markdown:rehypeSanitize:tagNames': req.body.tagWhitelist,
      'markdown:rehypeSanitize:attributes': req.body.attrWhitelist,
    };

    try {
      await configManager.updateConfigs(reqestXssParams);
      const xssParams = {
        isEnabledXss: await crowi.configManager.getConfig('markdown:rehypeSanitize:isEnabledPrevention'),
        xssOption: await crowi.configManager.getConfig('markdown:rehypeSanitize:option'),
        tagWhitelist: await crowi.configManager.getConfig('markdown:rehypeSanitize:tagNames'),
        attrWhitelist: await crowi.configManager.getConfig('markdown:rehypeSanitize:attributes'),
      };

      const parameters = { action: SupportedAction.ACTION_ADMIN_MARKDOWN_XSS_UPDATE };
      activityEvent.emit('update', res.locals.activity._id, parameters);

      return res.apiv3({ xssParams });
    }
    catch (err) {
      const msg = 'Error occurred in updating xss';
      logger.error('Error', err);
      return res.apiv3Err(new ErrorV3(msg, 'update-xss-failed'));
    }

  });

  return router;
};