/*!
 * Copyright (c) 2024 PLANKA Software GmbH
 * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
 */

/**
 * @swagger
 * /api/users/{id}/avatar:
 *   patch:
 *     summary: Update user avatar
 *     description: Updates a user's avatar image. Users can update their own avatar, admins can update any user's avatar.
 *     tags:
 *       - Users
 *     parameters:
 *       - name: id
 *         in: path
 *         required: true
 *         description: ID of the user whose avatar to update
 *         schema:
 *           type: string
 *           example: 1357158568008091264
 *     requestBody:
 *       required: true
 *       content:
 *         multipart/form-data:
 *           schema:
 *             type: object
 *             required:
 *               - file
 *             properties:
 *               file:
 *                 type: string
 *                 format: binary
 *                 description: Avatar image file (must be an image format)
 *     responses:
 *       200:
 *         description: Avatar updated successfully
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               required:
 *                 - item
 *               properties:
 *                 item:
 *                   $ref: '#/components/schemas/User'
 *       400:
 *         $ref: '#/components/responses/ValidationError'
 *       401:
 *         $ref: '#/components/responses/Unauthorized'
 *       404:
 *         $ref: '#/components/responses/NotFound'
 *       422:
 *         $ref: '#/components/responses/UnprocessableEntity'
 */

const { idInput } = require('../../../utils/inputs');

const Errors = {
  USER_NOT_FOUND: {
    userNotFound: 'User not found',
  },
  NO_FILE_WAS_UPLOADED: {
    noFileWasUploaded: 'No file was uploaded',
  },
  FILE_IS_NOT_IMAGE: {
    fileIsNotImage: 'File is not image',
  },
};

module.exports = {
  inputs: {
    id: {
      ...idInput,
      required: true,
    },
  },

  exits: {
    userNotFound: {
      responseType: 'notFound',
    },
    noFileWasUploaded: {
      responseType: 'unprocessableEntity',
    },
    fileIsNotImage: {
      responseType: 'unprocessableEntity',
    },
    uploadError: {
      responseType: 'unprocessableEntity',
    },
  },

  async fn(inputs, exits) {
    const { currentUser } = this.req;

    let user;
    if (currentUser.role === User.Roles.ADMIN) {
      user = await User.qm.getOneById(inputs.id);

      if (!user) {
        throw Errors.USER_NOT_FOUND;
      }
    } else if (inputs.id !== currentUser.id) {
      throw Errors.USER_NOT_FOUND; // Forbidden
    } else {
      user = currentUser;
    }

    let files;
    try {
      files = await sails.helpers.utils.receiveFile(this.req.file('file'));
    } catch (error) {
      return exits.uploadError(error.message); // TODO: add error
    }

    if (files.length === 0) {
      throw Errors.NO_FILE_WAS_UPLOADED;
    }

    const file = _.last(files);

    const avatar = await sails.helpers.users
      .processUploadedAvatarFile(file)
      .intercept('fileIsNotImage', () => Errors.FILE_IS_NOT_IMAGE);

    user = await sails.helpers.users.updateOne.with({
      record: user,
      values: {
        avatar,
      },
      actorUser: currentUser,
      request: this.req,
    });

    if (!user) {
      throw Errors.USER_NOT_FOUND;
    }

    return exits.success({
      item: sails.helpers.users.presentOne(user, currentUser),
    });
  },
};