" vim: set ft=vim
set nocompatible

set encoding=utf-8
scriptencoding utf-8

" Plugins

call plug#begin()

Plug 'tpope/vim-commentary'
Plug 'tpope/vim-fugitive'
Plug 'tpope/vim-surround'

Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'

Plug 'jayli/vim-easycomplete'
Plug 'SirVer/ultisnips'

call plug#end()

" Plugin configuration

" Get AI out of here
let g:easycomplete_tabnine_enable = 0

" Syntax and colors and things
filetype plugin indent on
syntax on
syntax manual

" Disable Swapping
set nobackup nowritebackup noswapfile

" Statusline
" e.g. - [foobar.rs] - [rust] ----
set laststatus=2
set statusline=-[%.30t]-%y-
set fillchars=stl:—,eob:\ 
set fillchars+=stlnc:—
set fillchars+=vert:\|

" Hide intro message
set shortmess+=

set nowrap

" Relative numbering with absolute anchor
set number relativenumber

" Keep buffers open in memory when not visible
set hidden

" Keep buffers up to date with external changes
set autoread

set backspace=indent,eol,start

" Show invisibles
set list
set listchars=tab:‣\ ,trail:·,extends:◣,precedes:◢,nbsp:○

" Disable folding
set foldmethod=manual
set nofoldenable

" Search fixes
set ignorecase smartcase incsearch hlsearch gdefault

" Show incomplete command-based changes in realtime
set showcmd

" And breathe...
set scrolloff=5

" I think left to write, top to bottom
set splitright splitbelow

" Basic whitespace
set nojoinspaces
set expandtab
set shiftwidth=4
set softtabstop=4
set autoindent

" Show me when my lines are too long
"
" I wish to limit my lines to 80 characters long. However, Vim creates
" the n+1th character when you have n characters in a line. Hence, when
" my line is 80 characters long, I see the red line. So, this is set to
" 82, meaning that I only see the line when my lines actually are too long.
call matchadd('ColorColumn', '\%82v', 100)

" Mappings etc
let mapleader = "\<space>"
let localmapleader = "\\"

" Use jk to escape back to normal
inoremap jk <esc>
tnoremap jk <C-\><C-n>
inoremap <esc> <nop>

" Switch between recent buffers
nnoremap <leader><leader> <c-^>

" Fix shift-semicolon to write
noremap ; :

" I should map these to something useful
inoremap <up> <nop>
inoremap <down> <nop>
inoremap <left> <nop>
inoremap <right> <nop>
noremap <up> <nop>
noremap <down> <nop>
noremap <left> <nop>
noremap <right> <nop>

" Case control
nnoremap <leader>u viwU
nnoremap <leader>l viwu

" Pretend ex mode doesn't exist
nnoremap Q <nop>

" Moving lines around
nnoremap - ddp==
nnoremap _ :-1d<cr>pk==

" Quick access vimrc
nnoremap <leader>ev :tabedit $MYVIMRC<cr>

augroup updateVimrc
    autocmd!

    autocmd BufWritePost $MYVIMRC :source $MYVIMRC<cr>
augroup END

" Pane management
nnoremap <c-j> <c-w><c-j>
nnoremap <c-k> <c-w><c-k>
nnoremap <c-h> <c-w><c-h>
nnoremap <c-l> <c-w><c-l>

" Focus mode

function! Zoom()
    if exists('g:is_zoomed')
        unlet g:is_zoomed
        execute "wincmd ="
    else
        let g:is_zoomed = 'true'
        execute "wincmd _"
        execute "wincmd \|"
    endif
endfunc

nnoremap <leader>z :call Zoom()<cr>

" Show nice things on active pane only
augroup activePaneManagement
    autocmd!

    autocmd WinEnter,VimEnter,BufWinEnter * setl rnu cul syntax=ON
    autocmd WinLeave,BufWinLeave,BufLeave * setl nornu nocul syntax=OFF
augroup END

" Make directories in a filename if they don't exist.

function! EnsureDirExists ()
    let required_dir = expand("%:h")
    if !isdirectory(required_dir)
        try
            call mkdir( required_dir, 'p' )
        catch
          echom "Could not create directory"
          exit
        endtry
    endif
endfunction

augroup AutoMkdir
    autocmd!
    autocmd  BufNewFile  *  :call EnsureDirExists()
augroup END


" Show syntax highlighting groups for word under cursor
"
" This is useful for finding rogue elements I forgot in my colour
" scheme.
nnoremap <leader>\ :call <SID>SynStack()<CR>
function! <SID>SynStack()
  if !exists("*synstack")
    return
  endif
  echo map(synstack(line('.'), col('.')), 'synIDattr(v:val,"name")')
endfunc

" Open syntax file for current

" Syntax highlighting
colorscheme mpwb