119 lines
4.2 KiB
C#
119 lines
4.2 KiB
C#
using System.ComponentModel.DataAnnotations.Schema;
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using OliverBooth.Common.Data;
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using OliverBooth.Common.Data.Web;
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namespace OliverBooth.Data.Web;
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/// <summary>
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/// Represents a tutorial article.
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/// </summary>
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internal sealed class TutorialArticle : IEquatable<TutorialArticle>, ITutorialArticle
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{
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/// <inheritdoc />
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public string Body { get; private set; } = string.Empty;
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/// <inheritdoc />
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public bool EnableComments { get; internal set; }
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/// <inheritdoc />
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public string? Excerpt { get; private set; }
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/// <inheritdoc />
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public int Folder { get; private set; }
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/// <inheritdoc />
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[NotMapped]
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public bool HasOtherParts => NextPart is not null || PreviousPart is not null;
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/// <inheritdoc />
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public int Id { get; private set; }
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/// <inheritdoc />
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public int? NextPart { get; private set; }
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/// <inheritdoc />
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public Uri? PreviewImageUrl { get; private set; }
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/// <inheritdoc />
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public int? PreviousPart { get; private set; }
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/// <inheritdoc />
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public DateTimeOffset Published { get; private set; }
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/// <inheritdoc />
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public Guid? RedirectFrom { get; private set; }
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/// <inheritdoc />
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public string Slug { get; private set; } = string.Empty;
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/// <inheritdoc />
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public string Title { get; private set; } = string.Empty;
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/// <inheritdoc />
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public DateTimeOffset? Updated { get; private set; }
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/// <inheritdoc />
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public Visibility Visibility { get; private set; }
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/// <summary>
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/// Returns a value indicating whether two instances of <see cref="TutorialArticle" /> are equal.
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/// </summary>
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/// <param name="left">The first instance of <see cref="TutorialArticle" /> to compare.</param>
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/// <param name="right">The second instance of <see cref="TutorialArticle" /> to compare.</param>
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/// <returns>
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/// <see langword="true" /> if <paramref name="left" /> and <paramref name="right" /> are equal; otherwise,
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/// <see langword="false" />.
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/// </returns>
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public static bool operator ==(TutorialArticle? left, TutorialArticle? right) => Equals(left, right);
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/// <summary>
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/// Returns a value indicating whether two instances of <see cref="TutorialArticle" /> are not equal.
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/// </summary>
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/// <param name="left">The first instance of <see cref="TutorialArticle" /> to compare.</param>
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/// <param name="right">The second instance of <see cref="TutorialArticle" /> to compare.</param>
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/// <returns>
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/// <see langword="true" /> if <paramref name="left" /> and <paramref name="right" /> are not equal; otherwise,
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/// <see langword="false" />.
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/// </returns>
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public static bool operator !=(TutorialArticle? left, TutorialArticle? right) => !(left == right);
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/// <summary>
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/// Returns a value indicating whether this instance of <see cref="TutorialArticle" /> is equal to another
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/// instance.
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/// </summary>
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/// <param name="other">An instance to compare with this instance.</param>
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/// <returns>
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/// <see langword="true" /> if <paramref name="other" /> is equal to this instance; otherwise,
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/// <see langword="false" />.
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/// </returns>
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public bool Equals(TutorialArticle? other)
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{
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if (ReferenceEquals(null, other)) return false;
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if (ReferenceEquals(this, other)) return true;
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return Id.Equals(other.Id);
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}
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/// <summary>
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/// Returns a value indicating whether this instance is equal to a specified object.
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/// </summary>
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/// <param name="obj">An object to compare with this instance.</param>
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/// <returns>
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/// <see langword="true" /> if <paramref name="obj" /> is an instance of <see cref="TutorialArticle" /> and
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/// equals the value of this instance; otherwise, <see langword="false" />.
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/// </returns>
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public override bool Equals(object? obj)
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{
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return ReferenceEquals(this, obj) || obj is TutorialArticle other && Equals(other);
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}
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/// <summary>
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/// Gets the hash code for this instance.
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/// </summary>
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/// <returns>The hash code.</returns>
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public override int GetHashCode()
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{
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// ReSharper disable once NonReadonlyMemberInGetHashCode
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return Id;
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}
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}
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