{ config, lib, pkgs, globalInputs, system, ... }:

with lib;

let
  cfg = config.home.roles.development;

  # FIXME: Temporary override for upstream beads vendorHash mismatch
  # Remove after upstream fix: https://github.com/steveyegge/beads/issues/XXX
  beadsPackage = globalInputs.beads.packages.${system}.default.overrideAttrs (old: {
    vendorHash = "sha256-YU+bRLVlWtHzJ1QPzcKJ70f+ynp8lMoIeFlm+29BNPE=";
  });

  # Fetch the claude-plugins repository (for humanlayer commands/agents)
  # Update the rev to get newer versions of the commands
  claudePluginsRepo = builtins.fetchGit {
    url = "https://github.com/jeffh/claude-plugins.git";
    # To update: change this to the latest commit hash
    # You can find the latest commit at: https://github.com/jeffh/claude-plugins/commits/main
    rev = "5e3e4d937162185b6d78c62022cbfd1c8ad42c4c";
    ref = "main";
  };

in
{
  options.home.roles.development = {
    enable = mkEnableOption "Enable development tools and utilities";

    allowArbitraryClaudeCodeModelSelection = mkOption {
      type = types.bool;
      default = false;
      description = ''
        Whether to preserve model specifications in Claude Code humanlayer commands and agents.

        When false (default), the model: line is stripped from frontmatter, allowing Claude Code
        to use its default model selection.

        When true, the model: specifications from the source files are preserved, allowing
        commands to specify opus/sonnet/haiku explicitly.
      '';
    };
  };

  config = mkIf cfg.enable {
    home.packages = [
      beadsPackage
      pkgs.unstable.claude-code
      pkgs.unstable.claude-code-router
      pkgs.unstable.codex

      # Custom packages
      pkgs.custom.tea-rbw
    ];

    # Install Claude Code humanlayer command and agent plugins
    home.activation.claudeCodeCommands = lib.hm.dag.entryAfter ["writeBoundary"] ''
      # Clean up old plugin-installed commands and agents to avoid duplicates
      rm -f ~/.claude/commands/humanlayer:* 2>/dev/null || true
      rm -f ~/.claude/agents/humanlayer:* 2>/dev/null || true

      # Create directories if they don't exist
      mkdir -p ~/.claude/commands
      mkdir -p ~/.claude/agents

      # Copy all humanlayer command files and remove model specifications
      for file in ${claudePluginsRepo}/humanlayer/commands/*.md; do
        if [ -f "$file" ]; then
          filename=$(basename "$file" .md)
          dest="$HOME/.claude/commands/humanlayer:''${filename}.md"

          # Copy file and conditionally remove the "model:" line from frontmatter
          ${if cfg.allowArbitraryClaudeCodeModelSelection
            then "cp \"$file\" \"$dest\""
            else "${pkgs.gnused}/bin/sed '/^model:/d' \"$file\" > \"$dest\""
          }
        fi
      done

      # Copy all humanlayer agent files and remove model specifications
      for file in ${claudePluginsRepo}/humanlayer/agents/*.md; do
        if [ -f "$file" ]; then
          filename=$(basename "$file" .md)
          dest="$HOME/.claude/agents/humanlayer:''${filename}.md"

          # Copy file and conditionally remove the "model:" line from frontmatter
          ${if cfg.allowArbitraryClaudeCodeModelSelection
            then "cp \"$file\" \"$dest\""
            else "${pkgs.gnused}/bin/sed '/^model:/d' \"$file\" > \"$dest\""
          }
        fi
      done

      # Copy local commands from this repo (with retry for race conditions with running Claude)
      for file in ${./commands}/*.md; do
        if [ -f "$file" ]; then
          filename=$(basename "$file" .md)
          dest="$HOME/.claude/commands/''${filename}.md"
          # Remove existing file first, then copy with retry on failure
          rm -f "$dest" 2>/dev/null || true
          if ! cp "$file" "$dest" 2>/dev/null; then
            sleep 0.5
            cp "$file" "$dest" || echo "Warning: Failed to copy $filename.md to commands"
          fi
        fi
      done

      # Copy local skills (reference materials) to skills subdirectory
      mkdir -p ~/.claude/commands/skills
      for file in ${./skills}/*.md; do
        if [ -f "$file" ]; then
          filename=$(basename "$file" .md)
          dest="$HOME/.claude/commands/skills/''${filename}.md"
          rm -f "$dest" 2>/dev/null || true
          if ! cp "$file" "$dest" 2>/dev/null; then
            sleep 0.5
            cp "$file" "$dest" || echo "Warning: Failed to copy $filename.md to skills"
          fi
        fi
      done

      # Copy micro-skills (compact reusable knowledge referenced by formulas)
      for file in ${./skills/micro}/*.md; do
        if [ -f "$file" ]; then
          cp "$file" "$HOME/.claude/commands/skills/$(basename "$file")"
        fi
      done

      # Install beads formulas to user-level formula directory
      mkdir -p ~/.beads/formulas
      for file in ${./formulas}/*.formula.toml; do
        if [ -f "$file" ]; then
          cp "$file" "$HOME/.beads/formulas/$(basename "$file")"
        fi
      done

      $DRY_RUN_CMD echo "Claude Code plugins installed: humanlayer commands/agents + local commands + local skills + formulas"
    '';

    # Set up beads Claude Code integration (hooks for SessionStart/PreCompact)
    # This uses the CLI + hooks approach which is recommended over MCP for Claude Code
    home.activation.claudeCodeBeadsSetup = lib.hm.dag.entryAfter ["writeBoundary" "claudeCodeCommands"] ''
      # Run bd setup claude to install hooks into ~/.claude/settings.json
      # This is idempotent - safe to run multiple times
      ${beadsPackage}/bin/bd setup claude 2>/dev/null || true

      $DRY_RUN_CMD echo "Claude Code beads integration configured (hooks installed)"
    '';

    # Note: modules must be imported at top-level home config
  };
}