From c751709b1b4fe6f16fd84647e8e071455e7b78d6 Mon Sep 17 00:00:00 2001
From: Jake Mannens <jake@asger.xyz>
Date: Tue, 17 Mar 2026 03:04:36 +1100
Subject: v0.1a

---
 Services/SourceService.cs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 Services/SourceService.cs

(limited to 'Services/SourceService.cs')

diff --git a/Services/SourceService.cs b/Services/SourceService.cs
new file mode 100644
index 0000000..d145346
--- /dev/null
+++ b/Services/SourceService.cs
@@ -0,0 +1,20 @@
+using System.Text.RegularExpressions;
+
+namespace HyperBooru.Services;
+
+public interface ISourceService {
+    public string? GetUrlFromFilename(string filename);
+}
+
+public class SourceService : ISourceService {
+    private Regex PixivRegex =
+        new(@"^([0-9]+)_p[0-9]+(_master1200)?\.[^.]+$", RegexOptions.Compiled);
+
+    public string? GetUrlFromFilename(string filename) {
+        var pixivMatch = PixivRegex.Match(filename);
+        if(pixivMatch.Success)
+            return $"https://pixiv.net/en/artworks/{pixivMatch.Groups[1].Value}";
+
+        return null;
+    }
+}
-- 
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