#!/usr/bin/env bash
# ----------------------------------------------------------------------
#  INITIALIZE the HAMACS SYSTEM
# ----------------------------------------------------------------------

# shellcheck disable=SC2164
HAMACS_DIR=$(cd "$(dirname "$0")"; pwd)
HAMACS_DEST=$HOME/.emacs.d

cd "$HAMACS_DIR"
mkdir -p "$HAMACS_DEST"

for LINK in snippets templates elisp
do
    echo "Symlinking $HAMACS_DEST/$LINK to $HAMACS_DIR/$LINK ..."
    rm -rf "${HAMACS_DEST:-~}/$LINK"
    ln -s "$HAMACS_DIR/$LINK" "$HAMACS_DEST"
done

echo Download the public keys:
gpg --homedir ~/.emacs.d/elpa/gnupg --receive-keys 066DAFCB81E42C40

cat > "$HAMACS_DEST/early-init.el" <<EOF
;;; early-init.el --- Hamacs Early Init -*- lexical-binding: t; -*-
;;
;;    ▄████████   ▄▄▄▄███▄▄▄▄     ▄████████  ▄████████  ▄████████
;;   ███    ███ ▄██▀▀▀███▀▀▀██▄  ███    ███ ███    ███ ███    ███
;;   ███    █▀  ███   ███   ███  ███    ███ ███    █▀  ███    █▀
;;  ▄███▄▄▄     ███   ███   ███  ███    ███ ███        ███
;; ▀▀███▀▀▀     ███   ███   ███▀███████████ ███      ▀███████████
;;   ███    █▄  ███   ███   ███  ███    ███ ███    █▄         ███
;;   ███    ███ ███   ███   ███  ███    ███ ███    ███  ▄█    ███
;;   ██████████  ▀█   ███   █▀   ███    █▀  ████████▀ ▄████████▀
;;
;;; Commentary:
;;
;; This is my early Emacs configuration file. See init.el for the real
;; boot process. Since init.el calls package-initialize itself, we just
;; need to stop the normal package process.
;;
;;; Code:

;; Need the package system near the front:
(require 'package)

;; init.el activates the packages, so we don't want duplicated package loading:
(setq package-enable-at-startup nil)

;; While I would rather program my configurations, sometimes the Emacs
;; menu system is _good enough_, but I want it in its own file:

(setq custom-file (expand-file-name "custom.el" user-emacs-directory))
(when (file-exists-p custom-file)
  (load custom-file))

;; Let's build the \`exec-path' from the _real_ shell path:
EOF

IFS=":" read -r -a PATH_ARRAY <<< "${PATH}"
for P in "${PATH_ARRAY[@]}"
do
  echo "(add-to-list 'exec-path \"${P}\")" >> "$HAMACS_DEST/early-init.el"
done

cat >> "$HAMACS_DEST/early-init.el" <<EOF
;; Local Variables:
;; no-byte-compile: t
;; no-native-compile: t
;; no-update-autoloads: t
;; End:

;;; early-init.el ends here
EOF

echo "Created $HAMACS_DEST/early-init.el"


cat > "$HAMACS_DEST/init.el" <<EOF
;;; init.el --- Hamacs Init -*- lexical-binding: t; -*-
;;
;;   :::::::::: ::::    ::::      :::      ::::::::   ::::::::
;;   :+:        +:+:+: :+:+:+   :+: :+:   :+:    :+: :+:    :+:
;;   +:+        +:+ +:+:+ +:+  +:+   +:+  +:+        +:+
;;   +#++:++#   +#+  +:+  +#+ +#++:++#++: +#+        +#++:++#++
;;   +#+        +#+       +#+ +#+     +#+ +#+               +#+
;;   #+#        #+#       #+# #+#     #+# #+#    #+# #+#    #+#
;;   ########## ###       ### ###     ###  ########   ########
;;
;;; Commentary:
;;
;; This is my Emacs Bootloader. Simply put, I initialize the package
;; management system, and then tangle my literate files. This simple
;; idea came from https://github.com/susamn/dotfiles
;;
;;; Code:

(defvar hamacs-source-dir "$HAMACS_DIR" "Where we be.")

;; Bug fixes for ORG (there always seems to be something):
(defvar native-comp-deferred-compilation-deny-list nil)

;; Allow the installation of unsigned packages, but verify the
;; signature if possible:

(setq package-check-signature 'allow-unsigned)

;; Packages come from Melpa and the GNU and NonGNU ELPAs (the latter
;; two are Emacs defaults). The rest are installed straight from their
;; repositories with the :vc keyword of use-package (Emacs 30+).

(require 'package)
(require 'use-package)

(add-to-list 'package-archives
             '("melpa" . "https://melpa.org/packages/"))

(setq package-enable-at-startup nil)
(package-initialize)

;; Install any missing package by default, so we don't need :ensure t.
;; Use :ensure nil for libraries that ship with Emacs (or my own).

(setq use-package-always-ensure t)

(use-package org)

;; Let's rock:
(org-babel-load-file "$HAMACS_DIR/bootstrap.org")

(provide 'init)
;;; init.el ends here
EOF

echo "Created $HAMACS_DEST/init.el"
