# Midnight Commander: TUI file manager. Its config (ini, panels, F2 user menu)
# is opinionated but generic, so it lives in the public baseline alongside the
# other desktop tooling. The only personal value is the right-panel start dir,
# exposed as an option defaulting to the consumer's own home.
#
# ouch backs the F2 pack/unpack entries (one tool, archive format inferred from
# the extension), so it ships with mc to keep the menu self-contained.
#
# mc honours XDG natively: config in $XDG_CONFIG_HOME/mc (the files below),
# mutable runtime state (history, cursor positions) in $XDG_DATA_HOME/mc — no
# env vars needed. `ini` sets auto_save_setup=false so mc never rewrites these
# read-only store symlinks on exit.
#
# The F2 menu is a `types.lines` option, not a baked source file, so consumers
# can extend or replace it. The shipped menu is a `mkBefore` definition (stays
# first, ahead of appended entries), NOT a `default` — a `default` is dropped
# the moment a consumer adds a definition, which would lose the base. As a real
# definition it merges: `local.mc.menu = "…";` appends after the base entries;
# `lib.mkForce "…"` replaces it wholesale.

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

{
  options.local.mc = {
    otherDir = lib.mkOption {
      type = lib.types.str;
      default = config.home.homeDirectory;
      defaultText = lib.literalExpression "config.home.homeDirectory";
      description = "Startup directory for mc's other (right) panel.";
    };

    menu = lib.mkOption {
      type = lib.types.lines;
      description = ''
        Contents of mc's F2 user menu. The shipped baseline is a mkBefore
        definition, so a plain assignment appends entries after it; use
        lib.mkForce to replace it entirely.
      '';
    };
  };

  config = {
    home.packages = [ pkgs.mc pkgs.ouch ];

    local.mc.menu = lib.mkBefore (builtins.readFile ./assets/mc/menu);

    xdg.configFile = {
      "mc/ini".source = ./assets/mc/ini;
      "mc/menu".text = config.local.mc.menu;

      # Generated (not a static asset) so other_dir tracks the option instead of
      # baking in a personal path.
      "mc/panels.ini".text = ''
        [New Left Panel]
        display=listing
        reverse=false
        case_sensitive=true
        exec_first=false
        sort_order=name
        list_mode=full
        brief_cols=2
        user_format=half type name | size | perm | mtime
        user_status0=half type name | size | perm
        user_status1=half type name | size | perm
        user_status2=half type name | size | perm
        user_status3=half type name | owner | group | ctime
        user_mini_status=true
        list_format=user

        [New Right Panel]
        display=listing
        reverse=false
        case_sensitive=true
        exec_first=false
        sort_order=name
        list_mode=full
        brief_cols=2
        user_format=half type name | size | perm | mtime
        user_status0=half type name | size | perm
        user_status1=half type name | size | perm
        user_status2=half type name | size | perm
        user_status3=half type name | owner | group | ctime
        user_mini_status=true
        list_format=user

        [Dirs]
        current_is_left=true
        other_dir=${config.local.mc.otherDir}
      '';
    };
  };
}