feat: add standard client headers

Author: grdsdev

Package.swift

@@ -181,6 +181,7 @@ let package = Package(
       name: "SupabaseTests",
       dependencies: [
         .product(name: "CustomDump", package: "swift-custom-dump"),
+        .product(name: "InlineSnapshotTesting", package: "swift-snapshot-testing"),
         "Supabase",
       ]
     ),

Sources/Helpers/Version.swift

@@ -1,3 +1,4 @@
+import Foundation
 import XCTestDynamicOverlay
 
 private let _version = "2.26.0"  // {x-release-please-version}
@@ -7,3 +8,49 @@ private let _version = "2.26.0"  // {x-release-please-version}
 #else
   package let version = _version
 #endif
+
+private let _platform: String? = {
+  #if os(macOS)
+    return "macOS"
+  #elseif os(iOS)
+    return "iOS"
+  #elseif os(tvOS)
+    return "tvOS"
+  #elseif os(watchOS)
+    return "watchOS"
+  #elseif os(Android)
+    return "Android"
+  #elseif os(Linux)
+    return "Linux"
+  #elseif os(Windows)
+    return "Windows"
+  #else
+    return nil
+  #endif
+}()
+
+private let _platformVersion: String? = {
+  #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS) || os(Windows)
+    ProcessInfo.processInfo.operatingSystemVersionString
+  #elseif os(Linux) || os(Android)
+    if let version = try? String(contentsOfFile: "/proc/version") {
+      version.trimmingCharacters(in: .whitespacesAndNewlines)
+    } else {
+      nil
+    }
+  #else
+    nil
+  #endif
+}()
+
+#if DEBUG
+  package let platform = isTesting ? "macOS" : _platform
+#else
+  package let platform = _platform
+#endif
+
+#if DEBUG
+  package let platformVersion = isTesting ? "0.0.0" : _platformVersion
+#else
+  package let platformVersion = _platformVersion
+#endif

Sources/Supabase/Constants.swift

@@ -0,0 +1,25 @@
+//
+//  Constants.swift
+//  Supabase
+//
+//  Created by Guilherme Souza on 06/03/25.
+//
+
+import Foundation
+import Helpers
+
+let defaultHeaders: [String: String] = {
+  var headers = [
+    "X-Client-Info": "supabase-swift/\(version)"
+  ]
+
+  if let platform {
+    headers["X-Supabase-Client-Platform"] = platform
+  }
+
+  if let platformVersion {
+    headers["X-Supabase-Client-Platform-Version"] = platformVersion
+  }
+
+  return headers
+}()

Sources/Supabase/SupabaseClient.swift

@@ -17,8 +17,6 @@ public typealias SupabaseLogger = Helpers.SupabaseLogger
 public typealias SupabaseLogLevel = Helpers.SupabaseLogLevel
 public typealias SupabaseLogMessage = Helpers.SupabaseLogMessage
 
-let version = Helpers.version
-
 /// Supabase Client.
 public final class SupabaseClient: Sendable {
   let options: SupabaseClientOptions
@@ -163,12 +161,16 @@ public final class SupabaseClient: Sendable {
     databaseURL = supabaseURL.appendingPathComponent("/rest/v1")
     functionsURL = supabaseURL.appendingPathComponent("/functions/v1")
 
-    _headers = HTTPFields([
-      "X-Client-Info": "supabase-swift/\(version)",
-      "Authorization": "Bearer \(supabaseKey)",
-      "Apikey": supabaseKey,
-    ])
-    .merging(with: HTTPFields(options.global.headers))
+    _headers = HTTPFields(defaultHeaders)
+      .merging(
+        with: HTTPFields(
+          [
+            "Authorization": "Bearer \(supabaseKey)",
+            "Apikey": supabaseKey,
+          ]
+        )
+      )
+      .merging(with: HTTPFields(options.global.headers))
 
     // default storage key uses the supabase project ref as a namespace
     let defaultStorageKey = "sb-\(supabaseURL.host!.split(separator: ".")[0])-auth-token"

Tests/SupabaseTests/SupabaseClientTests.swift

@@ -5,6 +5,8 @@ import IssueReporting
 @testable import Realtime
 @testable import Supabase
 import XCTest
+import InlineSnapshotTesting
+import SnapshotTestingCustomDump
 
 final class AuthLocalStorageMock: AuthLocalStorage {
   func store(key _: String, value _: Data) throws {}
@@ -61,16 +63,18 @@ final class SupabaseClientTests: XCTestCase {
       "https://project-ref.supabase.co/functions/v1"
     )
 
-    XCTAssertEqual(
-      client.headers,
+    assertInlineSnapshot(of: client.headers, as: .customDump) {
+      """
       [
-        "X-Client-Info": "supabase-swift/\(Supabase.version)",
         "Apikey": "ANON_KEY",
-        "header_field": "header_value",
         "Authorization": "Bearer ANON_KEY",
+        "X-Client-Info": "supabase-swift/0.0.0",
+        "X-Supabase-Client-Platform": "macOS",
+        "X-Supabase-Client-Platform-Version": "0.0.0",
+        "header_field": "header_value"
       ]
-    )
-    expectNoDifference(client._headers.dictionary, client.headers)
+      """
+    }
 
     XCTAssertEqual(client.functions.region, "ap-northeast-1")