1 files changed, 81 insertions, 0 deletions
diff --git a/Services/ConfigService.cs b/Services/ConfigService.cs
new file mode 100644
index 0000000..6ba3936
--- /dev/null
+++ b/Services/ConfigService.cs
@@ -0,0 +1,81 @@
+namespace HyperBooru.Services;
+
+public interface IConfigService {
+    public string DataPath      { get; }
+    public string DbPath        { get; }
+    public string MediaBasePath { get; }
+
+    public string GetPath(Media media);
+    public string GetPath(Media media, int width, int height);
+}
+
+public class ConfigService : IConfigService {
+    private IConfiguration config;
+
+    private const string AppName = "HyperBooru";
+
+    public string DataPath {
+        get {
+            #if DEBUG
+            return "Data";
+            #else
+            string? path = config["DataPath"];
+            if(path is not null)
+                return path;
+
+            switch(Environment.OSVersion.Platform) {
+                case PlatformID.Win32NT:
+                    return Path.Join(
+                        Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData),
+                        AppName);
+                case PlatformID.Unix:
+                    return $"/var/lib/{AppName.ToLower()}";
+                default:
+                    throw new NotImplementedException(
+                        $"Unknown Operating System: {Environment.OSVersion.Platform}");
+            }
+            #endif
+        }
+    }
+
+    public string DbPath =>
+        Path.Join(DataPath, $"{AppName}.db");
+
+    public string MediaBasePath =>
+        Path.Join(DataPath, "media");
+
+    public string ThumbnailBasePath =>
+        Path.Join(DataPath, "thumb");
+
+    public ConfigService(IConfiguration config) {
+        this.config = config;
+        InitDirectoryStructure();
+    }
+
+    public string GetPath(Media media) {
+        var fileInfo = new FileInfo(Path.Join(
+            MediaBasePath,
+            media.Guid.ToString().Substring(0, 2),
+            media.Guid.ToString().Substring(2, 2),
+            media.Guid.ToString()));
+
+        Directory.CreateDirectory(fileInfo.Directory.FullName);
+        return fileInfo.FullName;
+    }
+
+    public string GetPath(Media media, int width, int height) {
+        var fileInfo = new FileInfo(Path.Join(
+            ThumbnailBasePath,
+            media.Guid.ToString().Substring(0, 2),
+            media.Guid.ToString().Substring(2, 2),
+            $"{media.Guid.ToString()}-{width}-{height}"));
+
+        Directory.CreateDirectory(fileInfo.Directory.FullName);
+        return fileInfo.FullName;
+    }
+
+    private void InitDirectoryStructure() {
+        Directory.CreateDirectory(DataPath);
+        Directory.CreateDirectory(MediaBasePath);
+    }
+}
+\ No newline at end of file