'use strict';
const { ParserError, } = require('@apidevtools/json-schema-ref-parser/lib/util/errors');
const yaml = require('js-yaml');
const core = require('js-yaml').CORE_SCHEMA;
module.exports = {
    /**
     * The order that this parser will run, in relation to other parsers.
     *
     * @type {number}
     */
    order: 200,
    /**
     * Whether to allow "empty" files. This includes zero-byte files, as well as empty JSON objects.
     *
     * @type {boolean}
     */
    allowEmpty: true,
    /**
     * Determines whether this parser can parse a given file reference.
     * Parsers that match will be tried, in order, until one successfully parses the file.
     * Parsers that don't match will be skipped, UNLESS none of the parsers match, in which case
     * every parser will be tried.
     *
     * @type {RegExp|string[]|function}
     */
    canParse: ['.yaml', '.yml', '.json'], // JSON is valid YAML
    /**
     * Parses the given file as YAML
     *
     * @param {object} file           - An object containing information about the referenced file
     * @param {string} file.url       - The full URL of the referenced file
     * @param {string} file.extension - The lowercased file extension (e.g. ".txt", ".html", etc.)
     * @param {*}      file.data      - The file contents. This will be whatever data type was returned by the resolver
     * @returns {Promise}
     */
    async parse(file) {
        // eslint-disable-line require-await
        let data = file.data;
        if (Buffer.isBuffer(data)) {
            data = data.toString();
        }
        if (typeof data === 'string') {
            try {
                return yaml.load(data, { schema: core });
            }
            catch (e) {
                throw new ParserError(e.message, file.url);
            }
        }
        else {
            // data is already a JavaScript value (object, array, number, null, NaN, etc.)
            return data;
        }
    },
};
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