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;; -*- lexical-binding: t; -*-

(require 'package)
(setq package-check-signature nil
      package-archives '(("gnu" . "https://elpa.gnu.org/packages/")
                         ("nongnu" . "https://elpa.nongnu.org/packages/")
                         ("melpa" . "https://melpa.org/packages/")))
(package-initialize)
(unless package-archive-contents
  (package-refresh-contents))

(require 'use-package)
(require 'seq)
(require 'treesit)

(setq use-package-always-ensure t
      inhibit-startup-screen t
      initial-scratch-message nil
      initial-buffer-choice nil
      ring-bell-function #'ignore
      use-short-answers t
      create-lockfiles nil
      make-backup-files nil
      auto-save-default nil
      select-enable-clipboard t
      select-enable-primary nil
      save-interprogram-paste-before-kill nil
      confirm-nonexistent-file-or-buffer nil
      switch-to-buffer-obey-display-actions t
      custom-file (expand-file-name "custom.el" user-emacs-directory)
      display-line-numbers-type 'relative
      mouse-wheel-scroll-amount '(3 ((shift) . 1))
      mouse-wheel-progressive-speed nil
      mouse-wheel-scroll-amount-horizontal '(3 . 1)
      pixel-scroll-precision-mode nil
      split-height-threshold nil
      split-width-threshold nil)

(setq initial-major-mode 'text-mode)
(setq initial-buffer-choice t)

(setq-default indent-tabs-mode nil
              tab-width 4)

(menu-bar-mode -1)

(when (file-exists-p custom-file)
  (load custom-file))

(global-display-line-numbers-mode 1)
(column-number-mode 1)
(electric-pair-mode 1)
(show-paren-mode 1)
(save-place-mode 1)
(recentf-mode 1)
(savehist-mode 1)
(xterm-mouse-mode 1)

(use-package vertico
  :init
  (vertico-mode 1))

(use-package marginalia
  :init
  (marginalia-mode 1))

(use-package which-key
  :init
  (which-key-mode 1))

(use-package orderless
  :custom
  (completion-styles '(orderless basic)))

(use-package consult
  :bind (("C-x b" . consult-buffer)
         ("M-s r" . consult-ripgrep)
         ("M-s l" . consult-line)))

(use-package corfu
  :custom
  (corfu-auto t)
  (corfu-auto-prefix 2)
  :init
  (global-corfu-mode 1))

(use-package evil
  :init
  (setq evil-want-keybinding nil
        evil-want-C-u-scroll t
        evil-want-Y-yank-to-eol t
        evil-undo-system 'undo-redo
        evil-shift-width 4
        evil-visual-x-select-clipboard nil)
  :config
  (evil-mode 1)
  (setq evil-echo-state nil))

(use-package evil-collection
  :after evil
  :config
  (evil-collection-init))

(use-package evil-surround
  :after evil
  :config
  (global-evil-surround-mode 1))

(use-package evil-commentary
  :after evil
  :config
  (evil-commentary-mode 1))

(make-directory "~/notes/" t)

(use-package vterm)

(use-package elcord
  :config
  (elcord-mode 1))

(use-package org
  :ensure nil
  :custom
  (org-directory "~/notes/")
  (org-agenda-files '("~/notes/"))
  (org-default-notes-file "~/notes/inbox.org")
  (org-startup-indented t)
  (org-log-done 'time)
  (org-todo-keywords
   '((sequence "TODO(t)" "NEXT(n)" "WAIT(w)" "|" "DONE(d)" "CANC(c)")))
  (org-capture-templates
   '(("t" "Todo" entry
      (file+headline "~/notes/inbox.org" "Tasks")
      "* TODO %?\n  %U\n")
     ("i" "Idea" entry
      (file+headline "~/notes/inbox.org" "Ideas")
      "* %?\n  %U\n")))
  :config
  (require 'org-tempo)
  (add-hook 'org-mode-hook #'visual-line-mode))

(use-package evil-org
  :after (evil org)
  :hook (org-mode . evil-org-mode)
  :config
  (require 'evil-org-agenda)
  (evil-org-agenda-set-keys))

(use-package denote
  :custom
  (denote-directory "~/notes/")
  (denote-file-type 'org))

(use-package consult-denote
  :after (consult denote)
  :config
  (consult-denote-mode 1))

(use-package eglot
  :ensure nil
  :hook ((c-mode . eglot-ensure)
         (c++-mode . eglot-ensure)
         (rust-mode . eglot-ensure)
         (go-mode . eglot-ensure)
         (zig-mode . eglot-ensure))
  :config
  (add-to-list
   'eglot-server-programs
   '((c-mode c++-mode) . ("clangd" "--background-index" "--header-insertion=never")))
  (add-to-list 'eglot-server-programs '(zig-mode . ("zls"))))

(use-package flymake
  :ensure nil
  :hook (prog-mode . flymake-mode))

(use-package rust-mode
  :mode "\\.rs\\'")

(use-package go-mode
  :mode "\\.go\\'")

(use-package zig-mode
  :mode "\\.zig\\'")

(require 'warnings)
(add-to-list 'warning-suppress-types '(bytecomp))

(defvar coast-treesit-language-sources
  '((bash . ("https://github.com/tree-sitter/tree-sitter-bash" "src"))
    (c . ("https://github.com/tree-sitter/tree-sitter-c" "src"))
    (cpp . ("https://github.com/tree-sitter/tree-sitter-cpp" "src"))
    (css . ("https://github.com/tree-sitter/tree-sitter-css" "src"))
    (go . ("https://github.com/tree-sitter/tree-sitter-go" "src"))
    (haskell . ("https://github.com/tree-sitter/tree-sitter-haskell" "src"))
    (html . ("https://github.com/tree-sitter/tree-sitter-html" "src"))
    (javascript . ("https://github.com/tree-sitter/tree-sitter-javascript" "src"))
    (json . ("https://github.com/tree-sitter/tree-sitter-json" "src"))
    (lua . ("https://github.com/tree-sitter-grammars/tree-sitter-lua" "src"))
    (make . ("https://github.com/tree-sitter-grammars/tree-sitter-make" "src"))
    (markdown . ("https://github.com/tree-sitter/tree-sitter-markdown" "src"))
    (python . ("https://github.com/tree-sitter/tree-sitter-python" "src"))
    (rust . ("https://github.com/tree-sitter/tree-sitter-rust" "src"))
    (toml . ("https://github.com/tree-sitter/tree-sitter-toml" "src"))
    (tsx . ("https://github.com/tree-sitter/tree-sitter-typescript" "tsx/src"))
    (typescript . ("https://github.com/tree-sitter/tree-sitter-typescript" "typescript/src"))
    (yaml . ("https://github.com/tree-sitter-grammars/tree-sitter-yaml" "src"))))

(defun coast-treesit-install (language)
  (let* ((source (alist-get language coast-treesit-language-sources))
         (url (car source))
         (subdir (cadr source)))
    (when source
      (add-to-list
       'treesit-language-source-alist
       (if subdir
           (list language url nil subdir)
         (list language url)))
      (treesit-install-language-grammar language))))

(defun my/make-terminal-transparent (&optional frame)
  (unless (display-graphic-p frame)
    (let ((target-frame (or frame (selected-frame)))
          (faces '(default line-number line-number-current-line fringe
                    window-divider vertical-border hl-line)))
      (dolist (face faces)
        (when (facep face)
          (set-face-background face "unspecified-bg" target-frame)))
      (set-terminal-parameter (frame-terminal target-frame)
                              'background-mode 'dark))))

(add-hook 'window-setup-hook #'my/make-terminal-transparent)
(add-hook 'after-make-frame-functions #'my/make-terminal-transparent)
(advice-add 'load-theme :after
            (lambda (&rest _) (my/make-terminal-transparent)))

(use-package doom-themes)

(defun coast/remove-scratch-buffer ()
  (let ((buffer (get-buffer "*scratch*")))
    (when (and buffer
               (not (buffer-modified-p buffer))
               (not (get-buffer-window buffer t)))
      (kill-buffer buffer))))

(add-hook 'after-init-hook #'coast/remove-scratch-buffer)

(defun coast-treesit-install-missing ()
  (dolist (language (mapcar #'car coast-treesit-language-sources))
    (unless (treesit-language-available-p language)
      (condition-case nil
          (coast-treesit-install language)
        (error nil)))))

(add-hook 'after-init-hook #'coast-treesit-install-missing)

(add-hook 'emacs-startup-hook
          (lambda ()
            (delete-other-windows)))

(add-to-list 'load-path "/home/coast/.emacs.d/user-lisp")
(require 'modeline)

(use-package treemacs
  :ensure t
  :defer t
  :config
  (setq treemacs-collapse-dirs             (if treemacs-python-executable 3 0)
        treemacs-deferred-git-apply-delay  0.5
        treemacs-directory-name-transformer #'identity
        treemacs-display-in-side-window    t
        treemacs-eldoc-display             'simple
        treemacs-file-event-delay          5000
        treemacs-file-follow-delay         0.2
        treemacs-follow-after-init         t
        treemacs-expand-after-init         t
        treemacs-indentation               2
        treemacs-indentation-string        " "
        treemacs-is-other-window           nil
        treemacs-max-git-entries           5000
        treemacs-no-png-images             nil
        treemacs-persist-file              (expand-file-name ".cache/treemacs-persist" user-emacs-directory)
        treemacs-recenter-distance         0.1
        treemacs-file-watch-mode           t
        treemacs-fringe-indicator-mode     'always
        treemacs-hide-gitignored-files-mode nil
        treemacs-width                     30)

  (treemacs-resize-icons 11)
  (treemacs-follow-mode t)
  (treemacs-project-follow-mode t)
  (treemacs-filewatch-mode t)
  (treemacs-hide-gitignored-files-mode -1))

(use-package treemacs-evil
  :after (treemacs evil)
  :ensure t)

(use-package treemacs-icons-dired
  :hook (dired-mode . treemacs-icons-dired-mode)
  :ensure t)

(use-package treemacs-magit
  :after (treemacs magit)
  :ensure t)

(defun my/treemacs-open-current-dir ()
  "Toggle Treemacs open to current directory/project."
  (interactive)
  (require 'treemacs)
  (let ((state (treemacs-current-visibility)))
    (if (eq state 'visible)
        (treemacs)
      (treemacs-add-and-display-current-project-exclusively))))

(with-eval-after-load 'evil
  (evil-define-key 'normal 'global (kbd "SPC e") #'my/treemacs-open-current-dir))