﻿// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.Collections.Generic;
using Microsoft.CodeAnalysis.Host.Mef;
using Roslyn.Utilities;

namespace Microsoft.CodeAnalysis.EmbeddedLanguages
{
    internal class EmbeddedLanguageMetadata : OrderableMetadata, ILanguagesMetadata
    {
        /// <summary>
        /// The particular language-IDs this language supports (for example 'regex/regexp/etc.').
        /// </summary>
        public IEnumerable<string> Identifiers { get; }

        public IEnumerable<string> Languages { get; }

        /// <summary>
        /// If this language supports strings being passed to APIs that do not have a <c>// lang=...</c> comment or a
        /// <c>[StringSyntax]</c> attribute on them.  This is not exposed publicly as all modern language plugins should
        /// use those mechanisms.  This is for Regex/Json to support lighting up on older platform APIs that shipped
        /// before this IDE capability and thus were never annotated.
        /// </summary>
        internal bool SupportsUnannotatedAPIs { get; }

        public EmbeddedLanguageMetadata(IDictionary<string, object> data)
            : base(data)
        {
            this.Identifiers = ((IReadOnlyDictionary<string, object>)data).GetEnumerableMetadata<string>(nameof(Identifiers)).WhereNotNull();
            this.Languages = ((IReadOnlyDictionary<string, object>)data).GetEnumerableMetadata<string>(nameof(Languages)).WhereNotNull();
            this.SupportsUnannotatedAPIs = data.GetValueOrDefault(nameof(SupportsUnannotatedAPIs)) is bool b ? b : false;
        }

        public EmbeddedLanguageMetadata(
            string name, IEnumerable<string> languages, IEnumerable<string> after, IEnumerable<string> before, IEnumerable<string> identifiers, bool supportsUnannotatedAPIs)
            : base(name, after, before)
        {
            this.Identifiers = identifiers;
            this.Languages = languages;
            SupportsUnannotatedAPIs = supportsUnannotatedAPIs;
        }
    }
}
