feat: Add the check-pr script

flake.nix

@@ -20,6 +20,18 @@
       '';
     };
     flutter-build-raw = pkgs.callPackage flutterBuildRaw {};
+
+    checkPr = {stdenv}: stdenv.mkDerivation {
+      pname = "check-pr";
+      version = "0.1.0";
+      src = ./.;
+
+      installPhase = ''
+        mkdir -p $out/bin
+
+        install --mode 555 src/flutter/check-pr.sh $out/bin/check-pr
+      '';
+    };
   in {
     packages = {
       # The raw flutter-build script
@@ -31,6 +43,9 @@
           --notify-send ${pkgs.libnotify}/bin/notify-send \
           $@
       '';
+
+      # A script for checking if a PR is okay
+      checkPr = pkgs.callPackage checkPr {};
     };
   });
 }

src/flutter/check-pr.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+# Run before merging a PR. Checks if the formatting is correct.
+# Check if there are any formatting issues
+echo "Checking formatting..."
+dart_format_result=$(dart format --output none --set-exit-if-changed .)
+if [[ ! "$?" = "0" ]]; then
+    echo "Error: dart format indicates that format the code is not formatted properly"
+    echo
+    echo "dart format output:"
+    echo "$dart_format_result"
+    exit 1
+fi
+
+# Check if the linter has any issues
+echo "Checking linter..."
+flutter_analyze_result=$(flutter analyze)
+if [[ ! "$?" = "0" ]]; then
+    echo "Error: flutter analyze indicates that there are lint issues"
+    echo
+    echo "flutter analyze output:"
+    echo "${flutter_analyze_result}"
+    exit 1
+fi
+
+echo "PR looks good!"