" Basic Configuration
" ------------------

syntax on
set backspace=indent,eol,start

" Turn on filetype plugin
filetype plugin on

" Enable italics
set t_ZH=^[[3m
set t_ZR=^[[23m

" Hide command line when not being used (Nvim only)
" set cmdheight=0

" Tab Settings
" ------------

set tabstop=2       " Tabs are 2 spaces
set shiftwidth=2    " Using > indents 2 spaces
set autoindent      " Indent where possible
set nowrap          " Remove wrapping for coding files
set nonumber        " Disable line numbers

" Auto Commands
" -------------

" Markdown specific settings
autocmd FileType markdown setlocal wrap
autocmd FileType markdown setlocal nonumber

" Key Bindings
" ------------

" Window resizing
noremap <silent> <M-Left> :vertical resize -10<CR>
noremap <silent> <M-Right> :vertical resize +10<CR>
noremap <silent> <M-Up> :resize -10<CR>
noremap <silent> <M-Down> :resize +10<CR>

" Close current buffer
noremap <leader>x <cmd>bp\|bd#<cr>

" Mac specific fixes for function keys
nmap <F1> :NERDTreeToggle<CR>
nmap <Leader><F1> :NERDTreeFind<CR>
nmap <F8> :TagbarToggle<CR>
nmap <F7> :UndotreeToggle<CR>

" Easier shift-hjkl movement
nnoremap <C-J> <C-W>j
nnoremap <C-K> <C-W>k
nnoremap <C-L> <C-W>l
nnoremap <C-H> <C-W>h

" Plugins
" -------

call plug#begin()

" Theme plugins
Plug 'sonph/onehalf', { 'rtp': 'vim' }
Plug 'kaicataldo/material.vim', { 'branch': 'main' }
Plug 'sainnhe/everforest'
Plug 'rakr/vim-one'
Plug 'NLKNguyen/papercolor-theme'
Plug 'markvincze/panda-vim'
Plug 'jacoborus/tender.vim'
Plug 'mhartington/oceanic-next'
Plug 'kyoz/purify', { 'rtp': 'vim' }
Plug 'altercation/vim-colors-solarized'
Plug 'reedes/vim-colors-pencil'
Plug 'mswift42/vim-themes'
Plug 'Brettm12345/moonlight.vim'
Plug 'ghifarit53/tokyonight-vim'
Plug 'cormacrelf/vim-colors-github'
Plug 'tssm/c64-vim-color-scheme'

" Dev icons
Plug 'ryanoasis/vim-devicons'

" Helper plugins
Plug 'godlygeek/tabular'        " Align text
Plug 'tpope/vim-eunuch'          " VIM helpers (delete, rename, move)
Plug 'ctrlpvim/ctrlp.vim'        " Open anything plugin
Plug 'mileszs/ack.vim'           " Grep replace tool
Plug 'vim-test/vim-test'         " Runs PHPUnit tests
Plug 'majutsushi/tagbar'         " Shows tab and tags collections
Plug 'universal-ctags/ctags'     " Builds ctags automatically
Plug 'preservim/nerdtree'        " File explorer
Plug 'jistr/vim-nerdtree-tabs'   " NERDTree tabs
Plug 'tpope/vim-fugitive'        " Git support (diff)
Plug 'vim-vdebug/vdebug'         " Debugger for Vim
Plug 'reedes/vim-pencil'         " Soft wrapping
Plug 'craigemery/vim-autotag'    " Automatically builds ctags
Plug 'junegunn/goyo.vim'         " Distraction-free writing
Plug 'itchyny/lightline.vim'     " Status bar for Vim

call plug#end()

" Plugin Configuration
" --------------------

" COC Configuration
" -----------------

" Some servers have issues with backup files, see #649
set nobackup
set nowritebackup

" Disable COC for markdown files
function! s:disable_coc_for_type()
  let l:filesuffix_blacklist = ['markdown', 'md', 'mkd']
  if index(l:filesuffix_blacklist, expand('%:e')) != -1
    let b:coc_enabled = 0
  endif
endfunction
autocmd BufRead,BufNewFile * call s:disable_coc_for_type()

" Always show the signcolumn
set signcolumn=yes

" Reduce updatetime for better responsiveness
set updatetime=300

" Keybindings for COC
inoremap <silent><expr> <TAB> coc#pum#visible() ? coc#pum#next(1) : CheckBackspace() ? "\<Tab>" : coc#refresh()
inoremap <silent><expr> <S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"
inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm() : "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
inoremap <silent><expr> <c-space> coc#refresh()
nnoremap <silent> K :call <SID>show_documentation()<CR>

" GoTo code navigation
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Symbol renaming
nmap <leader>rn <Plug>(coc-rename)

" Formatting selected code
xmap <leader>f <Plug>(coc-format-selected)
nmap <leader>f <Plug>(coc-format-selected)

" Applying code actions to the selected code block
xmap <leader>a <Plug>(coc-codeaction-selected)
nmap <leader>a <Plug>(coc-codeaction-selected)

" Apply code actions at cursor position
nmap <leader>ac <Plug>(coc-codeaction-cursor)

" Apply code actions to entire buffer
nmap <leader>as <Plug>(coc-codeaction-source)

" Apply the most preferred quickfix action to fix diagnostic on the current line
nmap <leader>qf <Plug>(coc-fix-current)

" Remap keys for refactor code actions
nmap <silent> <leader>re <Plug>(coc-codeaction-refactor)
xmap <silent> <leader>r <Plug>(coc-codeaction-refactor-selected)
nmap <silent> <leader>r <Plug>(coc-codeaction-refactor-selected)

" Run Code Lens action on the current line
nmap <leader>cl <Plug>(coc-codelens-action)

" Pencil (Wrap) Settings
" ----------------------

let g:pencil#wrapModeDefault = 'soft'   " Default is 'hard'

augroup pencil
  autocmd!
  autocmd FileType markdown,mkd,md call pencil#init()
  autocmd FileType text call pencil#init()
augroup END

" Lightline Settings
" ------------------

call lightline#init()

" Goyo Settings
" -------------

function! s:auto_goyo()
  if &ft == 'markdown'
    Goyo 80
  elseif exists('#goyo')
    let bufnr = bufnr('%')
    Goyo!
    execute 'b '.bufnr
  endif
endfunction

augroup goyo_markdown
  autocmd!
  autocmd BufEnter * call s:auto_goyo()
augroup END

" Color Scheme
" ------------

colorscheme deus
set background=dark

" Post Scheme Formatting
" ----------------------

" Clear certain highlighting settings
highlight clear SignColumn
highlight clear FoldColumn

hi Folded ctermfg=100 guifg=NONE guibg=NONE ctermbg=NONE

hi TabLineFill term=bold cterm=bold ctermbg=0
hi TabLine ctermfg=NONE ctermbg=NONE
hi TabLineSel ctermfg=NONE ctermbg=NONE
hi SpecialKey guifg=NONE ctermfg=NONE guibg=NONE

hi Normal guibg=NONE ctermbg=NONE
hi CursorColumn cterm=NONE ctermbg=NONE ctermfg=NONE
hi CursorLine cterm=NONE ctermbg=NONE ctermfg=NONE
hi LineNr guibg=NONE ctermbg=NONE
hi CursorLineNr guibg=NONE ctermbg=NONE
hi EndOfBuffer guibg=NONE ctermbg=NONE guifg=#343d46 ctermfg=NONE

" Set comments to italic style
highlight Comment cterm=italic gui=italic

" Miscellaneous Settings
" ----------------------

set noshowmode
set noshowcmd