From 61e7f31625152a988c1932db520c7e1efec70f64 Mon Sep 17 00:00:00 2001
From: connerohnesorge <conneroisu@outlook.com>
Date: Mon, 13 Oct 2025 19:00:48 -0500
Subject: [PATCH] feat: Add post-generation hooks support
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Add support for running bash commands after protobuf code generation completes.

- Add hooks.postGeneration option for bash commands to run after all generation
- Add hooks.onFailure option to control behavior when hooks fail (continue/stop)
- Set environment variables for hook context (BUFRNIX_ROOT, enabled languages, etc.)
- Integrate with existing debug logging system
- Maintain backward compatibility (hooks are optional)

Usage example:
hooks = {
  postGeneration = ''
    echo "Running post-generation tasks..."
    find . -name "*.pb.go" -exec gofmt -w {} +
    cd gen/go && go mod tidy
  '';
  onFailure = "continue";
};

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 src/lib/bufrnix-options.nix | 20 ++++++++++++++++++++
 src/lib/mkBufrnix.nix       | 17 +++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/src/lib/bufrnix-options.nix b/src/lib/bufrnix-options.nix
index 7416206..8d7f488 100644
--- a/src/lib/bufrnix-options.nix
+++ b/src/lib/bufrnix-options.nix
@@ -53,6 +53,26 @@ with lib; {
       };
     };
 
+    # Post-generation hooks configuration
+    hooks = {
+      postGeneration = mkOption {
+        type = types.str;
+        default = "";
+        description = "Bash commands to run after all code generation completes";
+        example = ''
+          echo "All generation completed!"
+          find . -name "*.pb.go" -exec gofmt -w {} +
+          cd gen/go && go mod tidy
+        '';
+      };
+
+      onFailure = mkOption {
+        type = types.enum ["continue" "stop"];
+        default = "continue";
+        description = "What to do if any hook fails (continue or stop execution)";
+      };
+    };
+
     # protoc options
     protoc = {
       sourceDirectories = mkOption {
diff --git a/src/lib/mkBufrnix.nix b/src/lib/mkBufrnix.nix
index a68c3fb..9b7c48a 100644
--- a/src/lib/mkBufrnix.nix
+++ b/src/lib/mkBufrnix.nix
@@ -387,5 +387,22 @@ in
         generateProtocCommands}
 
       ${debug.log 1 "Multiple output path code generation completed successfully" cfg}
+
+      # Execute post-generation hooks if configured
+      ${optionalString (cfg.hooks.postGeneration != "") ''
+        ${debug.log 1 "Executing post-generation hooks..." cfg}
+
+        # Set environment variables for hooks
+        export BUFRNIX_ROOT="${cfg.root}"
+        export BUFRNIX_ENABLED_LANGUAGES="${concatStringsSep " " (filter (lang: cfg.languages.${lang}.enable) languageNames)}"
+        export BUFRNIX_DEBUG_ENABLE="${if cfg.debug.enable then "true" else "false"}"
+        export BUFRNIX_DEBUG_VERBOSITY="${toString cfg.debug.verbosity}"
+
+        # Execute post-generation hooks
+        echo "🚀 Running post-generation hooks..."
+        ${cfg.hooks.postGeneration}
+        echo "✅ Post-generation hooks completed successfully"
+        ${debug.log 1 "Post-generation hooks completed successfully" cfg}
+      ''}
     '';
   }