dot_vimrc

" ============================================================
" AUTO-INSTALL vim-plug
" ============================================================
if empty(glob('~/.vim/autoload/plug.vim'))
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
  autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

" Run PlugInstall if there are missing plugins
autocmd VimEnter * if len(filter(values(g:plugs), '!isdirectory(v:val.dir)'))
  \| PlugInstall --sync | source $MYVIMRC
\| endif
" ============================================================
" PLUGINS (vim-plug) -- https://github.com/junegunn/vim-plug
" ============================================================
" :PlugInstall
call plug#begin('~/.vim/plugged')

" Core
Plug 'tpope/vim-sensible'             " Sensible defaults
Plug 'tpope/vim-surround'             " Surround text objects
Plug 'tpope/vim-commentary'           " gc to comment lines
Plug 'tpope/vim-repeat'               " Repeat plugin commands with .
Plug 'jiangmiao/auto-pairs'           " Auto-close brackets/quotes

" UI
Plug 'itchyny/lightline.vim'          " Status bar
Plug 'frazrepo/vim-rainbow'           " Rainbow parentheses
Plug 'ap/vim-css-color'               " Color preview in CSS
Plug 'nathanaelkane/vim-indent-guides'" Visual indent guides
Plug 'ryanoasis/vim-devicons'         " Icons (load LAST)

" Themes
Plug 'tomasr/molokai'
Plug 'dracula/vim',   { 'as': 'dracula' }
Plug 'sonph/onehalf', { 'rtp': 'vim' }

" Navigation & Motion
Plug 'easymotion/vim-easymotion'      " Fast cursor movement
Plug 'christoomey/vim-tmux-navigator' " Tmux/Vim pane navigation
Plug 'junegunn/fzf',  { 'do': { -> fzf#install() } }  " Fuzzy finder
Plug 'junegunn/fzf.vim'               " fzf Vim integration

" File Tree
Plug 'preservim/nerdtree',            { 'on': 'NERDTreeToggle' }
Plug 'Xuyuanp/nerdtree-git-plugin',   { 'on': 'NERDTreeToggle' }
Plug 'tiagofumo/vim-nerdtree-syntax-highlight', { 'on': 'NERDTreeToggle' }

" Git
Plug 'airblade/vim-gitgutter'         " Git diff in gutter

" Language Support
Plug 'vim-ruby/vim-ruby'
Plug 'pangloss/vim-javascript'
Plug 'elzr/vim-json'

call plug#end()

" ============================================================
" THEME & APPEARANCE
" ============================================================
set t_Co=256
syntax on

try
  set cursorline
  colorscheme onehalfdark
  let g:lightline = {
    \ 'colorscheme': 'onehalfdark',
    \ 'active': {
    \   'left':  [['mode', 'paste'], ['gitbranch', 'readonly', 'filename', 'modified']],
    \   'right': [['lineinfo'], ['percent'], ['fileformat', 'fileencoding', 'filetype']]
    \ },
    \ 'component_function': {
    \   'gitbranch': 'FugitiveHead'
    \ }
    \ }

  if exists('+termguicolors')
    let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
    let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
    set termguicolors
  endif
catch
  colorscheme delek
endtry

" ============================================================
" GENERAL SETTINGS
" ============================================================
set encoding=utf-8

" UI
set number               " Show absolute line number on current line
set relativenumber       " Relative numbers on other lines
set noshowmode           " Lightline handles this
set laststatus=2         " Always show status bar
set showcmd              " Show partial commands in bottom bar
set ruler                " Show cursor position
set cursorline           " Highlight current line
set signcolumn=yes       " Always show sign column (prevents layout shift)
set scrolloff=8          " Keep 8 lines visible above/below cursor
set sidescrolloff=8      " Keep 8 columns visible left/right

" Indentation
set expandtab            " Use spaces instead of tabs
set tabstop=2            " Visual width of a tab character
set shiftwidth=2         " Indent size for << and >>
set softtabstop=2        " Spaces inserted when pressing Tab
set autoindent           " Copy indent from current line
set smartindent          " Smart auto-indenting for code

" Search
set ignorecase           " Case-insensitive search...
set smartcase            "   ...unless query has uppercase
set hlsearch             " Highlight search matches
set incsearch            " Incremental search as you type

" Brackets
set showmatch            " Highlight matching bracket
set mat=2                " Blink duration in tenths of a second

" Clipboard & Mouse
set clipboard=unnamed    " Use system clipboard
" set mouse=a            " Uncomment to enable mouse support

" Files
set nobackup
set nowritebackup
set noswapfile
set autoread             " Auto-reload files changed outside Vim

" Whitespace visualization (toggle with <Leader>l)
set listchars=eol:¶,tab:»-,trail:·,extends:>,precedes:<,space:␣

" Splits open at the bottom and right (more natural)
set splitbelow
set splitright

" ============================================================
" KEY MAPPINGS
" ============================================================
let mapleader = " "      " Space as leader key

" Escape alternative
inoremap jk <ESC>

" Clear search highlight
nnoremap <Leader>h :nohlsearch<CR>

" Toggle whitespace visibility
nnoremap <Leader>l :set list!<CR>

" Quick save / quit
nmap <Leader>w :w<CR>
nmap <Leader>q :q!<CR>
nmap <Leader>x :x<CR>           " Save and quit

" Sudo write
cmap w!! w !sudo tee % >/dev/null

" EasyMotion
nmap <Leader>s <Plug>(easymotion-s2)

" Buffer navigation
nnoremap <Leader>bn :bnext<CR>
nnoremap <Leader>bp :bprevious<CR>
nnoremap <Leader>bd :bdelete<CR>
nnoremap <Leader>bl :buffers<CR>

" Window navigation (redundant with vim-tmux-navigator but useful standalone)
nnoremap <C-h> <C-w>h
nnoremap <C-j> <C-w>j
nnoremap <C-k> <C-w>k
nnoremap <C-l> <C-w>l

" FZF
nnoremap <Leader>f :Files<CR>
nnoremap <Leader>g :Rg<CR>
nnoremap <Leader>b :Buffers<CR>

" Move lines up/down in visual mode
vnoremap J :m '>+1<CR>gv=gv
vnoremap K :m '<-2<CR>gv=gv

" Keep cursor centered when searching
nnoremap n nzzzv
nnoremap N Nzzzv

" ============================================================
" NERDTREE
" ============================================================
map <C-n> :NERDTreeToggle<CR>
let NERDTreeShowHidden   = 1
let NERDTreeMinimalUI    = 1
let NERDTreeQuitOnOpen   = 1
let NERDTreeIgnore       = ['^node_modules$', '\.git$', '\.DS_Store$']
let NERDTreeStatusLine   = -1    " Suppress status line in NERDTree window

let NERDTreeGitStatusWithFlags = 1
let NERDTreeColorMapCustom = {
  \ 'Staged'    : '#0ee375',
  \ 'Modified'  : '#d9bf91',
  \ 'Renamed'   : '#51C9FC',
  \ 'Untracked' : '#FCE77C',
  \ 'Unmerged'  : '#FC51E6',
  \ 'Dirty'     : '#FFBD61',
  \ 'Clean'     : '#87939A',
  \ 'Ignored'   : '#808080'
  \ }

" Close Vim if NERDTree is the only window left
autocmd BufEnter * if tabpagenr('$') == 1
  \ && winnr('$') == 1
  \ && exists('b:NERDTree')
  \ && b:NERDTree.isTabTree()
  \| quit |
\| endif

" ============================================================
" VIM-INDENT-GUIDES
" ============================================================
let g:indent_guides_enable_on_vim_startup = 1
let g:indent_guides_start_level           = 2
let g:indent_guides_guide_size            = 1