From a6e2e08ecbb36a0e53831f2a35145cd1cc7c204b Mon Sep 17 00:00:00 2001
From: Kurt <kwsch@users.noreply.github.com>
Date: Mon, 21 Apr 2025 01:10:57 -0500
Subject: [PATCH] Add pokepast.es url import

why not
---
 PKHeX.Core/Editing/Showdown/PokepasteTeam.cs | 80 ++++++++++++++++++++
 PKHeX.Core/Editing/Showdown/ShowdownTeam.cs  |  4 +-
 PKHeX.WinForms/MainWindow/Main.cs            |  4 +-
 3 files changed, 84 insertions(+), 4 deletions(-)
 create mode 100644 PKHeX.Core/Editing/Showdown/PokepasteTeam.cs

diff --git a/PKHeX.Core/Editing/Showdown/PokepasteTeam.cs b/PKHeX.Core/Editing/Showdown/PokepasteTeam.cs
new file mode 100644
index 000000000..9c8d53ceb
--- /dev/null
+++ b/PKHeX.Core/Editing/Showdown/PokepasteTeam.cs
@@ -0,0 +1,80 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
+
+namespace PKHeX.Core;
+
+public static class PokepasteTeam
+{
+    /// <summary>
+    /// Generates the raw URL for retrieving a team based on the supplied team identifier.
+    /// </summary>
+    /// <param name="team">The numeric identifier of the team.</param>
+    /// <returns>A string containing the full URL to access the team data.</returns>
+    public static string GetURL(ulong team) => $"https://pokepast.es/{team:x16}/raw";
+    public static string GetURLOld(int team) => $"https://pokepast.es/{team}/raw";
+
+    public static bool TryGetSets(string url, [NotNullWhen(true)] out string? content)
+    {
+        content = null;
+        if (!Uri.TryCreate(url, UriKind.Absolute, out var uriResult) || (uriResult.Scheme != Uri.UriSchemeHttp && uriResult.Scheme != Uri.UriSchemeHttps))
+            return false;
+
+        content = NetUtil.GetStringFromURL(uriResult);
+        return content != null;
+    }
+
+    /// <summary>
+    /// Determines if the provided text is a valid Showdown team URL. If valid, returns a normalized API URL.
+    /// </summary>
+    /// <param name="text">The text to evaluate.</param>
+    /// <param name="url">When the method returns, contains the normalized API URL if the text represents a valid Showdown team URL; otherwise, null.</param>
+    /// <param name="hash"></param>
+    /// <returns><c>true</c> if the text is a valid Showdown team URL; otherwise, <c>false</c>.</returns>
+    public static bool IsURL(ReadOnlySpan<char> text, [NotNullWhen(true)] out string? url)
+    {
+        text = text.Trim();
+        url = null;
+        if (!text.StartsWith("https://pokepast.es/")) // short link
+            return false;
+
+        return TryCheckWeb(text, out url);
+    }
+
+    /// <summary>
+    /// Attempts to extract the team identifier from a Showdown web URL and converts it to a standard API URL.
+    /// </summary>
+    /// <param name="text">The Showdown web URL as a read-only span of characters.</param>
+    /// <param name="url">When the method returns, contains the standardized API URL if extraction is successful; otherwise, null.</param>
+    /// <returns><c>true</c> if the team index is successfully extracted and converted; otherwise, <c>false</c>.</returns>
+    public static bool TryCheckWeb(ReadOnlySpan<char> text, [NotNullWhen(true)] out string? url)
+    {
+        // if ends with `/`, remove.
+        if (text.EndsWith('/'))
+            text = text[..^1]; // remove trailing slash
+        // if ends with `/raw`, remove.
+        if (text.EndsWith("/raw"))
+            text = text[..^4]; // remove trailing /raw
+
+        url = null;
+
+        // seek back to `/`
+        int start = text.LastIndexOf('/'); // seek back to /
+        if (start == -1)
+            return false;
+
+        // get the substring after
+        var number = text[(start + 1)..];
+        switch (number.Length)
+        {
+            case 16 when ulong.TryParse(number, NumberStyles.HexNumber, null, out var hash):
+                url = GetURL(hash);
+                return true;
+            case <= 8 when int.TryParse(number, out var team):
+                url = GetURLOld(team);
+                return true;
+            default:
+                return false;
+        }
+    }
+}
diff --git a/PKHeX.Core/Editing/Showdown/ShowdownTeam.cs b/PKHeX.Core/Editing/Showdown/ShowdownTeam.cs
index cc96609f9..51707f26b 100644
--- a/PKHeX.Core/Editing/Showdown/ShowdownTeam.cs
+++ b/PKHeX.Core/Editing/Showdown/ShowdownTeam.cs
@@ -21,11 +21,9 @@ public static class ShowdownTeam
     /// </summary>
     /// <param name="url">The URL to retrieve the team data from.</param>
     /// <param name="content">When the method returns, contains the processed team data if retrieval and formatting succeed; otherwise, null.</param>
-    /// <param name="team">The numeric identifier extracted from the URL or response.</param>
     /// <returns><c>true</c> if the team data is successfully retrieved and reformatted; otherwise, <c>false</c>.</returns>
-    public static bool TryGetSets(string url, [NotNullWhen(true)] out string? content, out int team)
+    public static bool TryGetSets(string url, [NotNullWhen(true)] out string? content)
     {
-        team = 0;
         content = null;
         if (!Uri.TryCreate(url, UriKind.Absolute, out var uriResult) || (uriResult.Scheme != Uri.UriSchemeHttp && uriResult.Scheme != Uri.UriSchemeHttps))
             return false;
diff --git a/PKHeX.WinForms/MainWindow/Main.cs b/PKHeX.WinForms/MainWindow/Main.cs
index 988063ac6..ac3b34863 100644
--- a/PKHeX.WinForms/MainWindow/Main.cs
+++ b/PKHeX.WinForms/MainWindow/Main.cs
@@ -525,7 +525,9 @@ private void ClickShowdownImportPKM(object sender, EventArgs e)
         // Get Simulator Data
         var text = Clipboard.GetText();
         ShowdownSet set;
-        if (ShowdownTeam.IsURL(text, out var url) && ShowdownTeam.TryGetSets(url, out var content, out _))
+        if (ShowdownTeam.IsURL(text, out var url) && ShowdownTeam.TryGetSets(url, out var content))
+            set = ShowdownParsing.GetShowdownSets(content).FirstOrDefault() ?? new(""); // take only first set
+        else if (PokepasteTeam.IsURL(text, out url) && PokepasteTeam.TryGetSets(url, out content))
             set = ShowdownParsing.GetShowdownSets(content).FirstOrDefault() ?? new(""); // take only first set
         else
             set = new ShowdownSet(text);