feat: update DotEnv.cs to lookup for .env file in nearest parent folder

Author: osm-Jatin

OsmoDoc.API/DotEnv.cs

@@ -2,13 +2,27 @@
 
 public static class DotEnv
 {
-    public static void Load(string filePath)
+    public static void LoadEnvFile(string fileName = ".env")
     {
-        if (!File.Exists(filePath))
+        DirectoryInfo? dir = new DirectoryInfo(Directory.GetCurrentDirectory());
+
+        while (dir != null)
         {
-            return;
+            string envPath = Path.Combine(dir.FullName, fileName);
+            if (File.Exists(envPath))
+            {
+                Load(envPath);
+                return;
+            }
+
+            dir = dir.Parent;
         }
 
+        throw new FileNotFoundException(".env file not found");
+    }
+    
+    public static void Load(string filePath)
+    {
         foreach (string line in File.ReadAllLines(filePath))
         {
             // Check if the line contains '='
@@ -31,5 +45,4 @@ public static void Load(string filePath)
             Environment.SetEnvironmentVariable(key, value);
         }
     }
-
 }

OsmoDoc.API/Program.cs

@@ -13,6 +13,7 @@
 using OsmoDoc.API.Models;
 using OsmoDoc.Services;
 using System.IdentityModel.Tokens.Jwt;
+using System.Runtime.InteropServices;
 
 WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
 
@@ -25,23 +26,17 @@
     });
 
 // Load .env file
-string root = Directory.GetCurrentDirectory();
-string dotenv = Path.GetFullPath(Path.Combine(root, "..", ".env"));
-if (File.Exists(dotenv))
-{
-    OsmoDoc.API.DotEnv.Load(dotenv);
-}
-else
+OsmoDoc.API.DotEnv.LoadEnvFile();
+
+// Initialize PDF tool path once at startup (on Windows)
+if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
 {
-    throw new FileNotFoundException($".env file not found at path: {dotenv}");
+    OsmoDocPdfConfig.WkhtmltopdfPath = Path.Combine(
+        builder.Environment.WebRootPath,
+        builder.Configuration.GetSection("STATIC_FILE_PATHS:HTML_TO_PDF_TOOL").Value!
+    );
 }
 
-// Initialize PDF tool path once at startup
-OsmoDocPdfConfig.WkhtmltopdfPath = Path.Combine(
-    builder.Environment.WebRootPath,
-    builder.Configuration.GetSection("STATIC_FILE_PATHS:HTML_TO_PDF_TOOL").Value!
-);
-
 // Register REDIS service
 builder.Services.AddSingleton<IConnectionMultiplexer>(
     ConnectionMultiplexer.Connect(Environment.GetEnvironmentVariable("REDIS_URL") ?? throw new Exception("No REDIS URL specified"))