;;; -*- lexical-binding: t; -*-
(use-package eshell :elpaca nil
  :bind
  (:map eshell-mode-map
        ("M-r" . consult-history))
  :hook ((eshell-first-time-mode . kj/eshell-on-load))
  :config
  (add-hook 'eshell-mode-hook
            (lambda ()
              (setenv "PAGER" "cat"))
            (setenv "EDITOR" "emacsclient"))
  (setq eshell-prefer-lisp-functions nil
        eshell-scroll-to-bottom-on-input 'all
        eshell-hist-ignoredups t
        eshell-destroy-buffer-when-process-dies t
        eshell-error-if-no-glob t)
  (setq tramp-remote-path '(tramp-own-remote-path))

  (defun kj/eshell-on-load ()
    (dolist (command '("htop" "tmux" "vim" "nvim" "watch"))
      (add-to-list 'eshell-visual-commands
                   command))

    ;; (define-key eshell-prompt-mode-map (kbd "C-d") 'eshell-life-is-too-much)
    )

  (add-to-list 'eshell-complex-commands "ssh")

  (add-to-list 'eshell-modules-list 'eshell-tramp)
  (add-hook 'eshell-mode-hook 'visual-line-mode))

(use-package pcmpl-args)

(use-package esh-help
  :init
  (setup-esh-help-eldoc))

(use-package eshell-syntax-highlighting
  :hook (eshell-mode . eshell-syntax-highlighting-mode))

(defun eshell/ssh (&rest args)
  (if (= 1 (length args))
      (throw 'eshell-replace-command
             (eshell/cd
              (format "/ssh:%s:" (car args))))
    (throw 'eshell-replace-command
           (eshell-parse-command "*ssh"
                                 (eshell-stringify-list (flatten-tree args))))))

(defvar kj/eshell-here-directory)

(defun kj/eshell-buffer-name ()
  (let ((base (concat "*eshell:" default-directory)))
    (cond
     ((not (get-buffer base)) base)
     (t (cl-loop for n from 2
                 for name = (format "%s<%d>" base n)
                 until (not (get-buffer name))
                 finally return name)))))

(defun kj/eshell-update-buffer-name ()
  (interactive)
  (rename-buffer (kj/eshell-buffer-name)))
(add-hook 'eshell-directory-change-hook 'kj/eshell-update-buffer-name)

(defun kj/new-eshell-here ()
  (let ((default-directory kj/eshell-here-directory))
    (eshell t)))

(defun kj/eshell-here ()
  (interactive)
  (unless (eq last-command 'kj/eshell-here)
    (setq kj/eshell-here-directory
          (if (derived-mode-p 'eshell-mode)
              (with-current-buffer (other-buffer (current-buffer) t)
                default-directory)
            default-directory)))
  (if (derived-mode-p 'eshell-mode)
      (kj/new-eshell-here)
    (eshell))
  (kj/eshell-update-buffer-name))

(provide 'kj-eshell)