wip swift package manager support. first validate old cocoapod suppor…

…t for new sqflite_darwin project

sqflite_support/lib/spm.dart

@@ -0,0 +1,45 @@
+import 'dart:io';
+
+import 'package:process_run/shell.dart';
+import 'package:pub_semver/pub_semver.dart';
+
+/// Check if spm is enabled
+Future<bool> flutterHasSpmEnabled() async {
+  var lines = (await run('flutter config --list', verbose: false)).outLines;
+  for (var line in lines) {
+    var parts = line.split(':').map((e) => e.trim()).toList();
+    if (parts.length == 2) {
+      if (parts[0] == 'enable-swift-package-manager') {
+        return parts[1] == 'true';
+      }
+    }
+  }
+  return false;
+}
+
+/// Min supported SPM version (as of 2024-10-07 on main channel)
+var minSpmFlutterVersion = Version(3, 26, 0, pre: '0');
+
+/// Enable spm
+Future<void> enableSpm() async {
+  var flutterVersion = (await getFlutterBinVersion())!;
+  if (flutterVersion < minSpmFlutterVersion) {
+    throw 'Flutter version $flutterVersion is not supported for spm (min: $minSpmFlutterVersion)';
+  }
+  var spmEnabled = await flutterHasSpmEnabled();
+  if (spmEnabled) {
+    stdout.writeln('SPM already enabled');
+    return;
+  }
+  await run('flutter config --enable-swift-package-manager');
+}
+
+/// Enable spm
+Future<void> disableSpm() async {
+  var spmEnabled = await flutterHasSpmEnabled();
+  if (!spmEnabled) {
+    stdout.writeln('SPM already disabled');
+    return;
+  }
+  await run('flutter config --no-enable-swift-package-manager');
+}