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using System;
using System.Net;
using System.Threading.Tasks;
using HtmlAgilityPack;
using Pathoschild.Http.Client;
using StardewModdingAPI.Common.Models;
namespace StardewModdingAPI.Web.Framework.ModRepositories
{
/// <summary>An HTTP client for fetching mod metadata from the Chucklefish mod site.</summary>
internal class ChucklefishRepository : RepositoryBase
{
/*********
** Properties
*********/
/// <summary>The base URL for the Chucklefish mod site.</summary>
private readonly string BaseUrl;
/// <summary>The URL for a mod page excluding the base URL, where {0} is the mod ID.</summary>
private readonly string ModPageUrlFormat;
/// <summary>The underlying HTTP client.</summary>
private readonly IClient Client;
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="vendorKey">The unique key for this vendor.</param>
/// <param name="userAgent">The user agent for the API client.</param>
/// <param name="baseUrl">The base URL for the Chucklefish mod site.</param>
/// <param name="modPageUrlFormat">The URL for a mod page excluding the <paramref name="baseUrl"/>, where {0} is the mod ID.</param>
public ChucklefishRepository(string vendorKey, string userAgent, string baseUrl, string modPageUrlFormat)
: base(vendorKey)
{
this.BaseUrl = baseUrl;
this.ModPageUrlFormat = modPageUrlFormat;
this.Client = new FluentClient(baseUrl).SetUserAgent(userAgent);
}
/// <summary>Get metadata about a mod in the repository.</summary>
/// <param name="id">The mod ID in this repository.</param>
public override async Task<ModInfoModel> GetModInfoAsync(string id)
{
// validate ID format
if (!uint.TryParse(id, out uint _))
return new ModInfoModel($"The value '{id}' isn't a valid Chucklefish mod ID, must be an integer ID.");
// fetch info
try
{
// fetch HTML
string html;
try
{
html = await this.Client
.GetAsync(string.Format(this.ModPageUrlFormat, id))
.AsString();
}
catch (ApiException ex) when (ex.Status == HttpStatusCode.NotFound)
{
return new ModInfoModel("Found no mod with this ID.");
}
// parse HTML
var doc = new HtmlDocument();
doc.LoadHtml(html);
// extract mod info
string url = new UriBuilder(new Uri(this.BaseUrl)) { Path = string.Format(this.ModPageUrlFormat, id) }.Uri.ToString();
string name = doc.DocumentNode.SelectSingleNode("//meta[@name='twitter:title']").Attributes["content"].Value;
if (name.StartsWith("[SMAPI] "))
name = name.Substring("[SMAPI] ".Length);
string version = doc.DocumentNode.SelectSingleNode("//h1/span").InnerText;
// create model
return new ModInfoModel(name, this.NormaliseVersion(version), url);
}
catch (Exception ex)
{
return new ModInfoModel(ex.ToString());
}
}
/// <summary>Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.</summary>
public override void Dispose()
{
this.Client.Dispose();
}
}
}
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