Vim Setup

" ===============================
" Kevin's Portable .vimrc
" Clean, fast, readable.
" ===============================

let mapleader = ","           " Press Esc, comma then shortcut

" === General Behavior ===
set nocompatible              " Don't use old vi compatibility
set backspace=indent,eol,start " Backspace works over everything
set history=1000              " Command and search history
set hidden                    " Allow switching buffers without saving
set mouse=a                   " Enable mouse support in all modes

" === UI Enhancements ===
set number                    " Show absolute line numbers
set nowrap                    " Don't wrap long lines
set linebreak                 " Break lines at word boundaries
set showcmd                   " Show incomplete command in lower right
set cursorline                " Highlight current line
set ruler                     " Show cursor position in the status line
set wildmenu                  " Tab completion menu for commands
set title                     " Show file title in terminal title bar
set laststatus=2              " always show status line

" === Search Behavior ===
set hlsearch                  " Highlight search results
set incsearch                 " Show match while typing
set ignorecase                " Ignore case in searches...
set smartcase                 " ...unless capital letters used

" === Indentation ===
set expandtab                 " Use spaces instead of tabs
set shiftwidth=4              " Indent by 4 spaces
set tabstop=4                 " A tab character looks like 4 spaces
set softtabstop=4             " Insert 4 spaces when pressing Tab
set autoindent                " Copy indent from current line
set smartindent               " Do smart C-style indenting

" === Filetype-Specific Tweaks ===
filetype plugin indent on     " Enable filetype-specific plugins and indenting
autocmd FileType python setlocal expandtab shiftwidth=4 softtabstop=4
autocmd FileType sh     setlocal expandtab shiftwidth=4 softtabstop=4

" === Folding ===
set foldmethod=indent         " Fold based on indent levels
set foldlevel=99              " Open all folds by default

" === Performance Tweaks ===
set lazyredraw                " Don’t redraw while executing macros
set ttyfast                   " Assume a fast terminal connection
set noswapfile                " Don't use swapfiles
set nobackup                  " Don't keep backup files
set nowritebackup             " Don't backup before overwriting

" === Colors and Syntax ===
syntax on
set background=dark           " Tell colorschemes to use dark background
colorscheme desert            " Pick your favorite — 'desert' is safe and readable

" === Clipboard (if supported) ===
set clipboard=unnamedplus     " Use system clipboard (requires +clipboard)

" === Keybindings and Leader ===
" i am leaving this here as a warning to future generations to never do this
" let mapleader = " "           " Use SPACE as the <leader> key


" --- Smart Save ---
nnoremap <C-s> :w<CR>         " Ctrl+S to save

" --- Command Prompt Shortcut ---
" Use SPACE for command mode — normal mode only
nnoremap <silent> <SPACE> :


" --- Toggle hlsearch ---
nnoremap <leader>h :set hlsearch!<CR>    " Toggle search highlight on/off
nnoremap <leader><CR> :nohlsearch<CR>   " Clear highlight quickly

" --- Toggle relative numbers ---
nnoremap <leader>n :set relativenumber!<CR>

" --- Yank to system clipboard ---
vnoremap <C-c> "+y            " Ctrl+C in visual mode yanks to system clipboard

" --- Better window movement ---
nnoremap <C-h> <C-w>h
nnoremap <C-j> <C-w>j
nnoremap <C-k> <C-w>k
nnoremap <C-l> <C-w>l

" === my shortcuts ===
nnoremap <leader>f :Files<CR>           " FZF file search
nnoremap <leader>g :GFiles<CR>          " FZF Git files
nnoremap <leader>s :w<CR>               " Save file
nnoremap <leader>q :q<CR>               " Quit
" --- Git Integration ---
nnoremap <leader>gs :G<CR>               " ,gs → git status (fugitive)
nnoremap <leader>gc :G commit<CR>        " ,gc → git commit
nnoremap <leader>gd :G diff<CR>          " ,gd → git diff
nnoremap <leader>gb :G blame<CR>         " ,gb → git blame

" --- Undo and Session Tools ---
nnoremap <leader>u :UndotreeToggle<CR>   " ,u → toggle undo tree

" --- Editing Shortcuts ---
nnoremap <leader>w :w<CR>                " ,w → write file
nnoremap <leader>q :q<CR>                " ,q → quit
nnoremap <leader>x :x<CR>                " ,x → save and quit


" === Optional Fun Aliases ===
command WQ wq
command W w
command Q q
command E e

" === vim-plug plugin manager ===
call plug#begin('~/.vim/plugged')
Plug 'tpope/vim-fugitive'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'
Plug 'preservim/nerdtree'
Plug 'itchyny/lightline.vim'
call plug#end()

" --- Safe persistence (portable)
set undofile
set undodir^=~/.vim/undo

set backup
set writebackup
set backupdir^=~/.vim/backup
set directory^=~/.vim/swap

" Create dirs if missing (once per boot)
if !isdirectory(expand('~/.vim/undo')) | call mkdir(expand('~/.vim/undo'), 'p') | endif
if !isdirectory(expand('~/.vim/backup')) | call mkdir(expand('~/.vim/backup'), 'p') | endif
if !isdirectory(expand('~/.vim/swap')) | call mkdir(expand('~/.vim/swap'), 'p') | endif

## Setting Up My `.vimrc` on a New Machine

# 1. Install Vim and helpers
# Ubuntu/Debian
sudo apt install vim git fzf ripgrep

# macOS (Homebrew)
brew install vim fzf ripgrep

# 2. Install vim-plug (plugin manager)
curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
  https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim

# 3. Link your vimrc from your dotfiles repo
ln -s ~/codelab/dotfiles/vimrc ~/.vimrc
# Adjust the path above if your dotfiles are elsewhere

# 4. Install plugins from within Vim
# (You can also do this from the shell)
vim +PlugInstall +qall

# 5. Optional: Enable Ctrl-S in terminal
echo 'stty -ixon' >> ~/.bashrc
# Prevents terminal freeze when pressing Ctrl-S in Vim