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

let
  vaultName = "main";
  notesDir = "${config.home.homeDirectory}/Obsidian";
  vaultDir = "${notesDir}/${vaultName}";
  plugins = [
    "calendar"
    "advanced-tables"
    "dataview"
    "markdown-formatting-assistant"
  ];
  pluginDir = "${vaultDir}/.obsidian/plugins";
  setupPlugins = pkgs.writeShellScriptBin "setup-obsidian-plugins" ''
    set -e
    mkdir -p "${pluginDir}"
    cd "${pluginDir}"

    ${lib.concatMapStringsSep "\n" (plugin:
      ''
        if [ ! -d "${plugin}" ]; then
          echo "Installing plugin: ${plugin}"
          git clone --depth=1 https://github.com/obsidianmd/obsidian-releases/tree/master/community-plugins/${plugin} ${plugin} || true
        fi
      ''
    ) plugins}
  '';
  cfg = config.homeModules.obsidian;
in

lib.mkIf cfg.enable {
  home.packages = with pkgs; [
    obsidian
    setupPlugins
  ];

  # Ensure Notes and vault directory exist
  home.file."Obsidian/.keep".text = "";

  # Shell alias
  programs.zsh.shellAliases = {
    obsidian = "obsidian ${vaultDir}";
  };

  # Obsidian desktop entry
  xdg.desktopEntries.obsidian = {
    name = "Obsidian";
    genericName = "Markdown Notes";
    comment = "A powerful knowledge base with Markdown and local storage.";
    exec = "obsidian ${vaultDir}";
    icon = "obsidian";
    type = "Application";
    categories = [ "Office" ];
  };

  # Reminder to run plugin setup
  home.activation.obsidianPluginSetup = lib.hm.dag.entryAfter ["writeBoundary"] ''
    echo "💡 Run 'setup-obsidian-plugins' to install default plugins into ${pluginDir}"
  '';
}