;;; init.el --- Minimal Emacs: built-ins + evil -*- lexical-binding: t; -*-
;; Learning: C-h k KEY, f FUNCTION, v VARIABLE, m (modes), b (bindings).
;;; Code:
;;;; 1. Setup: gc, PATH, var/, packages
(add-hook 'emacs-startup-hook
          (lambda () (setq gc-cons-threshold (* 16 1024 1024))))

(dolist (bin (list (expand-file-name "~/.local/bin")
                   (expand-file-name "~/.go/bin")))
  (add-to-list 'exec-path bin)
  (setenv "PATH" (concat bin path-separator (getenv "PATH"))))

(add-to-list 'custom-theme-load-path (expand-file-name "themes" user-emacs-directory))

;; All runtime files live in var/. early-init.el redirects eln-cache and elpa.
(defvar my/var (locate-user-emacs-file "var/"))
(make-directory (concat my/var "transient/") t)
(setq savehist-file          (concat my/var "history")
      save-place-file        (concat my/var "places.eld")
      project-list-file      (concat my/var "projects.eld")
      transient-history-file (concat my/var "transient/history.el")
      transient-levels-file  (concat my/var "transient/levels.el")
      transient-values-file  (concat my/var "transient/values.el"))

;; Customize output goes to its own file.
(setq custom-file (expand-file-name "var/custom.el" user-emacs-directory))
(load custom-file 'noerror 'nomessage)

;; Only GNU and NonGNU ELPA (defaults). package-initialize runs automatically.
(require 'use-package)
(setq use-package-always-ensure t)

;;;; 2. UI, theme, fonts
;; Menu/tool/scroll bars are removed in early-init.el.
(add-to-list 'default-frame-alist '(fullscreen . maximized))
(blink-cursor-mode -1)

(setq inhibit-startup-screen t
      ring-bell-function #'ignore
      use-short-answers t
      scroll-conservatively 101
      scroll-margin 20)

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

(global-hl-line-mode 1)
(global-display-line-numbers-mode 1)
(pixel-scroll-precision-mode 1)
(column-number-mode 1)
(electric-pair-mode 1)
(which-key-mode 1)

(load-theme 'minimal t)

;; Mode line at the top of each window.
(setq-default header-line-format mode-line-format mode-line-format nil)

(set-face-attribute 'default nil :family "JetBrainsMono Nerd Font" :height 120)
(setq-default line-spacing '(4 . 4))

;; Command launcher.
(keymap-global-set "C-S-p" #'execute-extended-command)

;; Full buffer list.
(keymap-global-set "C-l" #'ibuffer)

;; Escape behaves like C-g.
(keymap-global-set "<escape>" #'keyboard-quit)
(keymap-set minibuffer-local-map "<escape>" #'abort-minibuffers)

;;;; 3. Files
(setq make-backup-files nil
      auto-save-default nil
      auto-save-list-file-prefix nil
      create-lockfiles nil
      confirm-kill-processes nil
      vc-follow-symlinks t)

(save-place-mode 1)
(savehist-mode 1)
(global-auto-revert-mode 1)

;;;; 4. Completion
;; Built-in vertical minibuffer completion with flex matching.
;; RET picks the highlighted candidate, C-j submits the typed text as-is.
(fido-vertical-mode 1)

(setq icomplete-prospects-height 15
      completion-styles '(basic partial-completion flex)
      completion-ignore-case t
      read-buffer-completion-ignore-case t
      read-file-name-completion-ignore-case t
      completions-format 'one-column
      isearch-lazy-count t
      xref-search-program 'ripgrep)

;;;; 5. Dired
;; Evil keys for dired live in modules/evil.el.
(setq dired-dwim-target t
      dired-kill-when-opening-new-dired-buffer t
      dired-listing-switches "-agho --group-directories-first"
      dired-recursive-copies 'always
      delete-by-moving-to-trash t)

(with-eval-after-load 'dired
  (require 'dired-x)
  (setq dired-omit-files "\\`\\.")
  (add-hook 'dired-mode-hook #'dired-omit-mode))

;;;; Core config ends here.
;;;; -----------------------------------------------------------------
;;;; 6. Modules. evil first: later modules may call evil-define-key.
(load (locate-user-emacs-file "modules/evil.el") nil 'nomessage)
(load (locate-user-emacs-file "modules/org.el")   nil 'nomessage)
(load (locate-user-emacs-file "modules/git.el")   nil 'nomessage)
(load (locate-user-emacs-file "modules/build.el") nil 'nomessage)
(load (locate-user-emacs-file "modules/dev.el")   nil 'nomessage)

;;; init.el ends here