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using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Threading.Tasks;
using HtmlAgilityPack;
using Pathoschild.Http.Client;
namespace StardewModdingAPI.Toolkit.Framework.Clients.Wiki
{
/// <summary>An HTTP client for fetching mod metadata from the wiki compatibility list.</summary>
public class WikiCompatibilityClient : IDisposable
{
/*********
** Properties
*********/
/// <summary>The underlying HTTP client.</summary>
private readonly IClient Client;
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="userAgent">The user agent for the wiki API.</param>
/// <param name="baseUrl">The base URL for the wiki API.</param>
public WikiCompatibilityClient(string userAgent, string baseUrl = "https://stardewvalleywiki.com/mediawiki/api.php")
{
this.Client = new FluentClient(baseUrl).SetUserAgent(userAgent);
}
/// <summary>Fetch mod compatibility entries.</summary>
public async Task<WikiModEntry[]> FetchAsync()
{
// fetch HTML
ResponseModel response = await this.Client
.GetAsync("")
.WithArguments(new
{
action = "parse",
page = "Modding:SMAPI_compatibility",
format = "json"
})
.As<ResponseModel>();
string html = response.Parse.Text["*"];
// parse HTML
var doc = new HtmlDocument();
doc.LoadHtml(html);
// find mod entries
HtmlNodeCollection modNodes = doc.DocumentNode.SelectNodes("table[@id='mod-list']//tr[@class='mod']");
if (modNodes == null)
throw new InvalidOperationException("Can't parse wiki compatibility list, no mods found.");
// parse
return this.ParseEntries(modNodes).ToArray();
}
/// <summary>Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.</summary>
public void Dispose()
{
this.Client?.Dispose();
}
/*********
** Private methods
*********/
/// <summary>Parse valid mod compatibility entries.</summary>
/// <param name="nodes">The HTML compatibility entries.</param>
private IEnumerable<WikiModEntry> ParseEntries(IEnumerable<HtmlNode> nodes)
{
foreach (HtmlNode node in nodes)
{
// extract fields
string name = this.GetMetadataField(node, "mod-name");
string alternateNames = this.GetMetadataField(node, "mod-name2");
string author = this.GetMetadataField(node, "mod-author");
string alternateAuthors = this.GetMetadataField(node, "mod-author2");
string[] ids = this.GetMetadataField(node, "mod-id")?.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(p => p.Trim()).ToArray() ?? new string[0];
int? nexusID = this.GetNullableIntField(node, "mod-nexus-id");
int? chucklefishID = this.GetNullableIntField(node, "mod-chucklefish-id");
string githubRepo = this.GetMetadataField(node, "mod-github");
string customSourceUrl = this.GetMetadataField(node, "mod-custom-source");
string customUrl = this.GetMetadataField(node, "mod-url");
string brokeIn = this.GetMetadataField(node, "mod-broke-in");
string anchor = this.GetMetadataField(node, "mod-anchor");
// parse stable compatibility
WikiCompatibilityInfo compatibility = new WikiCompatibilityInfo
{
Status = this.GetStatusField(node, "mod-status") ?? WikiCompatibilityStatus.Ok,
UnofficialVersion = this.GetSemanticVersionField(node, "mod-unofficial-version"),
UnofficialUrl = this.GetMetadataField(node, "mod-unofficial-url"),
Summary = this.GetMetadataField(node, "mod-summary")?.Trim()
};
// parse beta compatibility
WikiCompatibilityInfo betaCompatibility = null;
{
WikiCompatibilityStatus? betaStatus = this.GetStatusField(node, "mod-beta-status");
if (betaStatus.HasValue)
{
betaCompatibility = new WikiCompatibilityInfo
{
Status = betaStatus.Value,
UnofficialVersion = this.GetSemanticVersionField(node, "mod-beta-unofficial-version"),
UnofficialUrl = this.GetMetadataField(node, "mod-beta-unofficial-url"),
Summary = this.GetMetadataField(node, "mod-beta-summary")
};
}
}
// yield model
yield return new WikiModEntry
{
ID = ids,
Name = name,
AlternateNames = alternateNames,
Author = author,
AlternateAuthors = alternateAuthors,
NexusID = nexusID,
ChucklefishID = chucklefishID,
GitHubRepo = githubRepo,
CustomSourceUrl = customSourceUrl,
CustomUrl = customUrl,
BrokeIn = brokeIn,
Compatibility = compatibility,
BetaCompatibility = betaCompatibility,
Anchor = anchor
};
}
}
/// <summary>Get the value of a metadata field.</summary>
/// <param name="container">The metadata container.</param>
/// <param name="name">The field name.</param>
private string GetMetadataField(HtmlNode container, string name)
{
return container.Descendants().FirstOrDefault(p => p.HasClass(name))?.InnerHtml;
}
/// <summary>Get the value of a metadata field as a compatibility status.</summary>
/// <param name="container">The metadata container.</param>
/// <param name="name">The field name.</param>
private WikiCompatibilityStatus? GetStatusField(HtmlNode container, string name)
{
string raw = this.GetMetadataField(container, name);
if (raw == null)
return null;
if (!Enum.TryParse(raw, true, out WikiCompatibilityStatus status))
throw new InvalidOperationException($"Unknown status '{raw}' when parsing compatibility list.");
return status;
}
/// <summary>Get the value of a metadata field as a semantic version.</summary>
/// <param name="container">The metadata container.</param>
/// <param name="name">The field name.</param>
private ISemanticVersion GetSemanticVersionField(HtmlNode container, string name)
{
string raw = this.GetMetadataField(container, name);
return SemanticVersion.TryParse(raw, out ISemanticVersion version)
? version
: null;
}
/// <summary>Get the value of a metadata field as a nullable integer.</summary>
/// <param name="container">The metadata container.</param>
/// <param name="name">The field name.</param>
private int? GetNullableIntField(HtmlNode container, string name)
{
string raw = this.GetMetadataField(container, name);
if (raw != null && int.TryParse(raw, out int value))
return value;
return null;
}
/// <summary>The response model for the MediaWiki parse API.</summary>
[SuppressMessage("ReSharper", "ClassNeverInstantiated.Local")]
[SuppressMessage("ReSharper", "UnusedAutoPropertyAccessor.Local")]
private class ResponseModel
{
/// <summary>The parse API results.</summary>
public ResponseParseModel Parse { get; set; }
}
/// <summary>The inner response model for the MediaWiki parse API.</summary>
[SuppressMessage("ReSharper", "ClassNeverInstantiated.Local")]
[SuppressMessage("ReSharper", "CollectionNeverUpdated.Local")]
[SuppressMessage("ReSharper", "UnusedAutoPropertyAccessor.Local")]
private class ResponseParseModel
{
/// <summary>The parsed text.</summary>
public IDictionary<string, string> Text { get; set; }
}
}
}
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