namespace ResXManager.Scripting

{

using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using JetBrains.Annotations;

using tomenglertde.ResXManager.Infrastructure;

using tomenglertde.ResXManager.Model;

using TomsToolbox.Core;

internal class ResourceScope : IResourceScope

{

public ResourceScope([NotNull] object entries, [NotNull] object languages, [NotNull] object comments)

{

// ReSharper disable AssignNullToNotNullAttribute

Entries = entries.PsObjectCast<object>().TryCast().Returning<IEnumerable<ResourceTableEntry>>()

.When<IEnumerable>(item => item.PsCast<ResourceTableEntry>().ToArray())

.When<object>(item => new[] { item.PsObjectCast<ResourceTableEntry>() })

.Result;

if (Entries == null)

// ReSharper disable once LocalizableElement

throw new ArgumentException("Invalid input", nameof(entries));

Languages = languages.PsObjectCast<object>().TryCast().Returning<IEnumerable<CultureKey>>()

.When<string>(item => new[] { CultureKey.Parse(item) })

.When<IEnumerable>(item => item.PsCast<object>().Select(CultureKey.Parse).ToArray())

.When<object>(item => new[] { CultureKey.Parse(item.PsObjectCast<object>()) })

.Result;

if (Languages == null)

// ReSharper disable once LocalizableElement

throw new ArgumentException("Invalid input", nameof(languages));

Comments = comments.PsObjectCast<object>().TryCast().Returning<IEnumerable<CultureKey>>()

.When<string>(item => new[] { CultureKey.Parse(item) })

.When<IEnumerable>(item => item.PsCast<object>().Select(CultureKey.Parse).ToArray())

.When<object>(item => new[] { CultureKey.Parse(item.PsObjectCast<object>()) })

.Result;

// ReSharper restore AssignNullToNotNullAttribute

if (Comments == null)

// ReSharper disable once LocalizableElement

throw new ArgumentException("Invalid input", nameof(comments));

}

public IEnumerable<ResourceTableEntry> Entries { get; }

public IEnumerable<CultureKey> Languages { get; }

public IEnumerable<CultureKey> Comments { get; }

}

internal static class ExtensionMethods

{

[NotNull]

[ItemNotNull]

public static IEnumerable<T> PsCast<T>([NotNull][ItemNotNull] this IEnumerable items)

{

return items.OfType<object>().Select(PsObjectCast<T>);

}

[NotNull]

public static T PsObjectCast<T>([NotNull] this object item)

{

var type = item.GetType();

var value = type.Name == "PSObject" ? type.GetProperty("BaseObject")?.GetValue(item) : item;

if (value == null)

throw new InvalidOperationException("Unable to cast PowerShell object.");

return (T)value;

}

}

}