dotfiles/.vim/vimrc

" try not to put any lines in your vimrc that you don't understand :)

" not necessary, as vim will turn this on by default, when .vimrc is found
" set nocompatible

scriptencoding=utf8

filetype off                  "required


augroup install_vim_plug
  autocmd!
  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
augroup END

augroup plug_auto_install
  autocmd!
  " Run PlugInstall if there are missing plugins
  autocmd VimEnter * if len(filter(values(g:plugs), '!isdirectory(v:val.dir)'))
    \| PlugInstall --sync | source $MYVIMRC
    \| endif
augroup END

" both "filetype indent on" and "syntax on" are called by Plug, keeping DRY
call plug#begin()
" colourschemes
Plug 'liuchengxu/space-vim-theme'
Plug 'nikolasvargas/spacemacs-theme'
Plug 'cocopon/iceberg.vim'
Plug 'sainnhe/edge'
Plug 'chriskempson/base16-vim'
Plug 'axvr/photon.vim'
Plug 'Lokaltog/vim-monotone'
Plug 'https://git.sr.ht/~romainl/vim-bruin'
Plug 'fxn/vim-monochrome'

Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'

Plug 'ctrlpvim/ctrlp.vim'
Plug 'mhinz/vim-startify'
" properly handle wayland clipboard behaviour, at least until
" https://github.com/vim/vim/issues/5157 is fixed.
Plug 'jasonccox/vim-wayland-clipboard'
" 🌷 Distraction-free writing in Vim
Plug 'junegunn/goyo.vim', { 'for': 'markdown' }
Plug 'preservim/nerdcommenter'
Plug 'airblade/vim-gitgutter'

Plug 'tpope/vim-surround'
" fugitive.vim: A Git wrapper so awesome, it should be illegal
Plug 'tpope/vim-fugitive'
Plug 'tpope/vim-repeat'
Plug 'tpope/vim-speeddating', { 'on': [] }| " quick date incrementing
" plugin fails to work if it's only loaded on a predefined list of
" formats, commented for now
" Plug 'tpope/vim-afterimage', { 'for': ['xpm', 'png', 'ico', 'gif'] }
Plug 'tpope/vim-jdaddy', { 'for': 'json' }
Plug 'tpope/vim-ragtag', { 'for': ['html', 'xhtml', 'wml', 'xml', 'xslt', 'xsd', 'jsp', 'php', 'aspperl', 'aspvbs', 'cf', 'mason', 'htmldjango', 'eruby'] }
Plug 'bazelbuild/vim-ft-bzl', { 'for': ['starlark', 'bzl'] }
Plug 'z0mbix/vim-shfmt', { 'for': ['sh', 'bash'] }

" Plug 'gorodinskiy/vim-coloresque'| " coloured background for colour names/codes
" Plug 'lpinilla/vim-codepainter'| " text highlighting
Plug 'rhysd/git-messenger.vim'
" Plug 'Yggdroot/indentLine' " here
Plug 'adamheins/vim-highlight-match-under-cursor'

Plug 'roxma/nvim-yarp'
Plug 'roxma/vim-hug-neovim-rpc'
Plug 'Shougo/deoplete.nvim'

Plug 'prabirshrestha/async.vim'
Plug 'prabirshrestha/vim-lsp'
Plug 'rhysd/vim-lsp-ale'

Plug 'dense-analysis/ale'
Plug 'OmniSharp/omnisharp-vim', { 'for': ['cs', 'csh'] }
Plug 'justmao945/vim-clang', { 'on': [] }
Plug 'cdelledonne/vim-cmake'
Plug 'majutsushi/tagbar'
Plug 'lvht/tagbar-markdown', { 'for': 'markdown' }

Plug 'lervag/vimtex', { 'for': 'tex' }
Plug 'cespare/vim-toml', { 'for': 'toml' }
Plug 'Glench/Vim-Jinja2-Syntax', { 'for': ['ansible', 'jinja2'] }
Plug 'pearofducks/ansible-vim', { 'for': ['ansible', 'jinja2'] }
Plug 'hashivim/vim-terraform', { 'for': 'terraform' }
Plug 'aouelete/sway-vim-syntax', { 'for': 'sway' }
Plug 'rust-lang/rust.vim', { 'for': 'rust' }
Plug 'fatih/vim-go', { 'for': ['go', 'gomod', 'gohtmltmpl', 'gotexttmpl'], 'do': ':GoInstallBinaries' }
Plug 'chikamichi/mediawiki.vim', { 'for': 'wiki' }
Plug 's3rvac/vim-syntax-redminewiki', { 'for': 'redminewiki' }
Plug 'mfukar/robotframework-vim', { 'for': 'robotframework' }
call plug#end()


" turn on vimscript 9 support
let g:airline_experimental = 1

let g:airline_powerline_fonts = 1
let g:airline_highlighting_cache = 1
" violet, wombat, deus
let g:airline_theme = 'minimalist'
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#formatter = 'unique_tail_improved'
" show tab number instead of number of splits
let g:airline#extensions#tabline#tab_nr_type = 1

let g:airline_mode_map = {
      \ '__'     : '-',
      \ 'c'      : 'C',
      \ 'i'      : 'I',
      \ 'ic'     : 'I-C',
      \ 'ix'     : 'I-X',
      \ 'n'      : 'N',
      \ 'multi'  : 'M',
      \ 'ni'     : 'N',
      \ 'no'     : 'N',
      \ 'R'      : 'R',
      \ 'Rv'     : 'R',
      \ 's'      : 'S',
      \ 'S'      : 'S',
      \ ''     : 'S',
      \ 't'      : 'T',
      \ 'v'      : 'V',
      \ 'V'      : 'V-L',
      \ ''     : 'V-B',
      \ }

" skip displaying fileformat output if the output matches a configured string.
let g:airline#parts#ffenc#skip_expected_string='utf-8[unix]'

" certain number of spaces are allowed after tabs, but not in between.
" this algorithm works well for /** */ style comments in a tab-indented file.
let g:airline#extensions#whitespace#mixed_indent_algo = 1

" turn off the warning section entirely.
let g:airline_section_warning = ''

let g:airline_skip_empty_sections = 1

" separator symbols
let g:airline_left_sep = ''
let g:airline_right_sep = ''
let g:airline_left_alt_sep = ''
let g:airline_right_alt_sep = ''

if !exists('g:airline_symbols')
	let g:airline_symbols = {}
endif

let g:airline_symbols.branch = ''
let g:airline_symbols.colnr = '℅:'
let g:airline_symbols.readonly = ''

" ale integration
let g:airline#extensions#ale#enabled = 1
" nrrwrgn integration
let g:airline#extensions#nrrwrgn#enabled = 1
" vcs integration
let g:airline#extensions#branch#enabled = 1
" show summary of changed hunks (gitgutter and/or vim-signify)
let g:airline#extensions#hunks#enabled = 1
" tabline integration
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#ctrlp#enabled = 1
let g:airline#extensions#taboo#enabled = 0
let g:airline#extensions#battery#enabled = 0
let g:airline#extensions#bookmark#enabled = 0
let g:airline#extensions#flog#enabled = 0
let g:airline#extensions#bufferline#enabled = 0
let g:airline#extensions#capslock#enabled = 0
let g:airline#extensions#coc#enabled = 0
" syntastic integration
let g:airline#extensions#syntastic#enabled = 0
" vim-csv
let g:airline#extensions#csv#enabled = 0
let g:airline#extensions#ctrlspace#enabled = 0
" Built-in extension to displays cursor in different colors depending on the
" current mode (only works in terminals iTerm, AppleTerm and xterm)
" * this fixes the issue of airline changing terminal cursor colour in kitty+fedora35/fedora36
let g:airline#extensions#cursormode#enabled = 0


" lsp
" disable diagnostics support - leave that to ALE
let g:lsp_diagnostics_enabled = 0
let g:lsp_diagnostics_virtual_text_enabled = 0
" ref:
" https://github.com/rhysd/vim-lsp-ale/blob/master/doc/vim-lsp-ale.txt#L98
" let g:lsp_ale_auto_config_vim_lsp = 0
" let g:lsp_ale_auto_config_ale = 0


let g:ale_close_preview_on_insert = 1
let g:ale_detail_to_floating_preview = 1
let g:ale_virtualtext_cursor = 1
let g:ale_hover_to_floating_preview = 1
let g:ale_completion_enabled = 1
let g:ale_hover_to_preview = 1
let g:ale_lsp_suggestions = 1

let g:ale_open_list = 0
let g:ale_keep_list_window_open = 0
let g:ale_list_window_size = 5
let g:ale_lint_on_text_changed = 'normal'
let g:ale_lint_on_insert_leave = 1
let g:ale_lint_delay = 1000| " the default being 200
let g:ale_completion_autoimport = 1
let g:ale_linters = { 'go': ['gopls', 'govet', 'golint'],
            \ 'dockerfile': ['hadolint'],
            \ 'cs': ['OmniSharp'],
            \ 'c': ['clang-format', 'ccls', 'clangd', 'clangtidy', 'cppcheck', 'cquery', 'flawfinder'],
            \ 'cpp': ['clang-format','ccls', 'clangd', 'clangtidy', 'cppcheck', 'flawfinder'],
            \ 'tf': ['tflint', 'terraform', 'tfsec', 'checkov'] }
let g:ale_fixers = { 'c': ['ccls', 'clang-format', 'clangtidy', 'cppcheck', 'cquery', 'flawfinder'],
            \ 'cpp': ['clang-format', 'clangtidy', 'cppcheck', 'flawfinder'],
            \ 'go': ['gopls'] }

if has('patch-8.1.1880')
  " set completeopt=longest,menuone,popuphidden
  set completeopt=longest,menuone,popup
  " Highlight the completion documentation popup background/foreground the same as
  " the completion menu itself, for better readability with highlighted
  " documentation.
  set completepopup=highlight:Pmenu,border:off
else
  set completeopt=longest,menuone,preview
  " Set desired preview window height for viewing documentation.
  set previewheight=5
endif


let g:gitgutter_terminal_reports_focus=0
let g:gitgutter_async = 1
let g:gitgutter_sign_allow_clobber=0
let g:gitgutter_set_sign_backgrounds = 0
let g:gitgutter_preview_win_floating = 1
set foldtext=gitgutter#fold#foldtext()
" let g:gitgutter_map_keys = 0
nmap ghs <Plug>(GitGutterStageHunk)
nmap ghu <Plug>(GitGutterUndoHunk)
nnoremap <leader>d :GitGutterLineHighlightsToggle<cr>

let g:deoplete#enable_at_startup = 1
let g:deoplete#enable_ignore_case = 1

let g:livepreview_cursorhold_recompile = 0
let g:livepreview_previewer = 'evince'
let g:livepreview_engine = 'pdflatex -shell-escape -interaction=nonstopmode'
let g:vimtex_compiler_progname = 'pdflatex -shell-escape --interaction=nonstopmode'
let g:tex_flavor = 'latex'

" nerdcommenter
" _ stands for forward slash (/)
noremap <silent><c-_> :call nerdcommenter#Comment(0,"toggle")<CR>
" Add spaces after comment delimiters by default
let g:NERDSpaceDelims = 1
" Allow commenting and inverting empty lines (useful when commenting a region)
let g:NERDCommentEmptyLines = 1
" Enable trimming of trailing whitespace when uncommenting
let g:NERDTrimTrailingWhitespace = 1
"""" Enable NERDCommenterToggle to check all selected lines is commented or not
"""let g:NERDToggleCheckAllLines = 1
" Add your own custom formats or override the defaults
let g:NERDCustomDelimiters = {
            \ 'vim': { 'left': '"','right': '' },
            \ 'c': {'left': '/**','right': '*/' },
            \ 'zsh': { 'left': '#','right': ''},
            \ 'sysctl': {'left': '#', 'right': ''},
            \ 'systemd': {'left': ';', 'right': ''},
            \}
" let g:NERDTreeGitStatusWithFlags = 1


" netrw
let g:netrw_banner       = 0
let g:netrw_keepdir      = 0
" prefer tree-style listing
let g:netrw_liststyle    = 3
" let g:netrw_liststyle    = 1
let g:netrw_sort_options = 'i'
" open files in a new horizontal split
let g:netrw_browse_split = 1


" indentline
" let g:indentLine_setColors = 1
" let g:indentLine_char_list = ['|', '¦', '┆', '┊', ':']
" let g:indentLine_concealcursor = 'inc'
" let g:indentLine_conceallevel = 0
" let g:indentLine_conceallevel = 2


" set conceallevel for json and markdown
let g:vim_json_conceal = 0
let g:markdown_syntax_conceal = 0


let g:git_messenger_close_on_cursor_moved = v:false
let g:git_messenger_always_into_popup = v:true
hi gitmessengerHash term=None guifg=#f0eaaa ctermfg=111

" OmniSharp
" IDE0010: Populate switch - display in ALE as `Info`
" IDE0055: Fix formatting - display in ALE as `Warning` style error
" CS8019: Duplicate of IDE0005
let g:OmniSharp_diagnostic_overrides = {
\ 'IDE0010': {'type': 'I'},
\ 'IDE0055': {'type': 'W', 'subtype': 'Style'},
\ 'CS8019': {'type': 'None'},
\}


" --------------------------
" syntastic
"""let g:syntastic_always_populate_loc_list = 1
"""let g:syntastic_auto_loc_list = 2
"""let g:syntastic_loc_list_height = 8
"""let g:syntastic_check_on_open = 1
"""let g:syntastic_check_on_wq = 0
"""let g:syntastic_aggregate_errors = 1
"""let g:syntastic_quiet_messages = { "type": "style" }
"""let g:syntastic_enable_highlighting=1
"""let g:syntastic_echo_current_error=1
"""" let g:syntastic_auto_jump=1
"""let g:syntastic_auto_jump = 0
"""let g:syntastic_id_checkers = 1
"""let g:syntastic_error_symbol = "✗"
"""let g:syntastic_warning_symbol = "⚠"
"""function! SyntasticCheckHook(errors)
"""    if !empty(a:errors)
"""        let g:syntastic_loc_list_height = min([len(a:errors), 10])
"""    endif
"""endfunction
"""
"""set statusline+=%#warningmsg#
"""set statusline+=%{exists('g:loaded_syntastic_plugin')?SyntasticStatuslineFlag():''}
"""set statusline+=%*
"""
"""let g:syntastic_javascript_checkers = ['jsl']
"""let g:syntastic_python_checkers = ['flake8', 'pylint-3']
"""let g:syntastic_c_compiler = 'clang'
"""let g:syntastic_c_check_header = 1
"""let g:syntastic_c_auto_refresh_includes = 1
"""let g:syntastic_cpp_checkers = ['cppcheck', 'g++']
"""let g:syntastic_cpp_cppcheck_args = "--language=c++ --std=c++20 --enable=all --verbose --suppress=unmatchedSuppression --suppress=missingIncludeSystem ./*.{cpp,h}"
"""let g:syntastic_cpp_compiler = 'g++'
"""let g:syntastic_cpp_compiler_options = ' -std=c++20 -Wall -Wextra'
"""let g:syntastic_cpp_check_header = 1
"""let g:syntastic_cpp_no_include_search = 0
"""let g:syntastic_cpp_remove_include_errors = 1
"""let g:syntastic_cpp_auto_refresh_includes = 1
"""let g:syntastic_c_cpplint_exec = ['cppcheck', 'clang-check', 'clang-tidy']
"""let g:syntastic_go_checkers = ['go', 'gopls', 'golint', 'govet']
"""" let g:syntastic_tex_checkers = ['lacheck', 'text/language_check']
"""let g:syntastic_tex_checkers = ['text/language_check', 'lacheck']
"""let g:syntastic_gitcommit_checkers = ['language_check']
"""let g:syntastic_yaml_checkers = ['yamllint']
"""let g:syntastic_make_checkers = ['gnumake']
"""let g:syntastic_aggregate_errors = 1


" ansible-vim settings
let g:ansible_unindent_after_newline=1
let g:ansible_attribute_highlight='ob'


let g:terraform_align=1
let g:terraform_fold_sections=1
let g:terraform_fmt_on_save=1


" ctrlp
" Setup some default ignores
let g:ctrlp_custom_ignore = {
	\ 'dir':'\v[\/](\.(git\/(branches|hooks|info|logs|modules|objects|rebase-merge|refs)|hg|svn)|\_site)$',
	\ 'file':'\v\.(exe|so|dll|class|png|jpg|jpeg)|(\.(git\/(description|index|packed-refs|COMMIT_EDITMSG|HEAD|FETCH_HEAD|ORIG_HEAD|REBASE_HEAD)))$',
	\}

" Use the nearest .git directory as the cwd
" This makes a lot of sense if you are working on a project that is in version
" control. It also supports works with .svn, .hg, .bzr.
" let g:ctrlp_working_path_mode = 'r'
let g:ctrlp_working_path_mode = 'raw'

nnoremap '<c-p>' :<CtrlP><cr>

let g:ctrlp_map = '<c-p>'
let g:ctrlp_show_hidden = 1
" Use a leader instead of the actual named binding
nmap <leader>p :CtrlP<cr>

" ctrlp buffers
" Easy bindings for its various modes
nmap <leader>bb :CtrlPBuffer<cr>
nmap <leader>bm :CtrlPMixed<cr>
nmap <leader>bs :CtrlPMRU<cr>

" buffers
nmap <leader>T :enew<cr>
nmap <leader>bq :bp <BAR> bd #<cr>
nmap <leader>gd :bd<cr>
map gn :bn<cr>
map gp :bp<cr>


" change cursor shape for different editing modes, neovim does this by default
if !has('nvim')
    if exists('$TMUX')
        let &t_SI = "\<Esc>Ptmux;\<Esc>\e[12 q\<Esc>\\"
        let &t_SI = "\<Esc>Ptmux;\<Esc>\e[4 q\<Esc>\\"
        let &t_SI = "\<Esc>Ptmux;\<Esc>\e[2 q\<Esc>\\"
    else
        let &t_SI = "\<Esc>]12;purple\x7"
        let &t_SR = "\e[4 q"
        let &t_EI = "\e[2 q"
    endif
endif
" reset cursor when vim exits
autocmd VimLeave * silent !echo -ne "\033]112\007"

command! W execute 'silent w !sudo tee % >/dev/null' | edit!
command! -nargs=* Make write | make! <args> | cwindow
command Note execute 'e ~/Sync/notes/' . strftime('%y-%m-%d-%H:%M:%S') . '.md'
command LocalNote execute 'e ./' . strftime('%y-%m-%d-%H:%M:%S') . '.md'

" always show full path on <c-g>
nnoremap <c-g> 1<c-g>
" open a terminal in $PWD
nnoremap <silent> <Leader>tt :terminal<CR>
" terminal normal mode
tnoremap <F1> <C-W>N
" toggle showing whitespace
noremap <F5> :set list!<CR>
" make shortcut
nnoremap <F4> :term ++hidden ++open make<cr>
nnoremap <leader><F4> :term ++open make<cr>
nnoremap <F8> :TagbarToggle<CR>

vmap gb :<C-U>!git blame % -L<C-R>=line("'<") <CR>,<C-R>=line("'>") <CR><CR>
nnoremap gb :!git blame %<CR>
" ll provided by vimtex
nnoremap <silent> <Leader>kk :w! !pdflatex -shell-escape -interaction=nonstopmode $PWD/*.tex<CR><CR>
:function Pdfpls()
    :echom "compiling ur tex goodness!"
    :w!
    :!pdflatex -shell-escape -interaction=nonstopmode $PWD/*.tex
    :!bibtex $PWD/*.aux
    :!pdflatex -shell-escape -interaction=nonstopmode $PWD/*.tex
:endfunction

nnoremap <silent> <Leader>lb :call Pdfpls()<cr><Esc>
nnoremap <Leader>l :exec &conceallevel ? "set conceallevel=0" : "set conceallevel=1"<CR><CR>

" toggle GitGutterLineHighlights
nnoremap <Leader>d :GitGutterLineHighlightsToggle<cr>

" ALE bindings
nmap <silent> <C-k> :ALEPreviousWrap<cr>
nmap <silent> <C-j> :ALENextWrap<cr>
nnoremap <Leader>a :ALEDetail<cr>
nnoremap <c-LeftMouse> :ALEGoToDefinition<cr>


" [bro]wse [ol]d files
nnoremap <leader>r :bro ol<cr>

" easy-way ifndef tmpl
nnoremap <silent><f12> "%phr_I#ifndef __<Esc>gUwyypldwidefine <Esc>yypldwiendif //<Esc>O<Esc>

" tab switching
nnoremap <silent><f6> gT
nnoremap <silent><f7> gt

" resize windows
map - <C-W>-
map + <C-W>+


"------------------------------------
" vim-go.vim
"------------------------------------
" use gopls
let g:go_def_mode='gopls'
let g:go_info_mode='gopls'
" Status line types/signatures.
let g:go_auto_type_info = 1

let g:go_highlight_functions = 1
let g:go_highlight_methods = 1
let g:go_highlight_structs = 1
let g:go_highlight_interfaces = 1
let g:go_highlight_operators = 1
let g:go_highlight_build_constraints = 1
let g:go_highlight_extra_types = 1
" if sluggish
" let g:go_highlight_structs = 0
" let g:go_highlight_interfaces = 0
" let g:go_highlight_operators = 0
let g:go_list_type = 'quickfix'
" let g:go_version_warning = 0
let g:go_fmt_fail_silently = 0
" auto formatting and importing
let g:go_fmt_command='gopls'
let g:go_fmt_autosave = 1
" go install mvdan.cc/gofumpt@latest
let g:go_gopls_gofumpt=1
" let lsp handle connecting to gopls
let g:go_gopls_enabled = 0

augroup vimgo
    au!
    au FileType go nmap <leader>gb <Plug>(go-build)
    au FileType go nmap <leader>b <Plug>(go-build)
    au FileType go nmap <leader>gr <Plug>(go-run)
    au FileType go nmap <leader>gt <Plug>(go-test)
    au FileType go nmap <Leader>gs <Plug>(go-implements)
    au FileType go nmap <Leader>gi <Plug>(go-info)
    au FileType go nmap <Leader>ge <Plug>(go-rename)
    au FileType go nmap <Leader>gd <Plug>(go-doc)
augroup END

" go_tags
"------------------------------------
exec 'source ' . escape(expand('~/.vim'),' ') . '/' . 'gotags.vimrc.vim'


" ------ wayland copy and pasting
let s:env = toupper(substitute(system('uname'), '\n', '', ''))
if s:env =~# 'LINUX' && executable('wl-copy')
	xnoremap <silent>"+y y:call system("wl-copy", @")<cr>
	xnoremap <silent>"*y y:call system("wl-copy", @")<cr>
endif
if s:env =~# 'LINUX' && executable('wl-paste')
	nnoremap <silent>"+p :let @"=substitute(system("wl-paste --no-newline"), '<C-v><C-m>', '', 'g')<cr>p
	nnoremap "*p :let @"=substitute(system("wl-paste --no-newline --primary"), '<C-v><C-m>', '', 'g')<cr>p
endif


inoremap <expr><TAB>  pumvisible() ? "\<C-n>" : "\<TAB>"
inoremap <expr><S-TAB>  pumvisible() ? "\<C-p>" : "\<left>"

" ------ autocmd ------

" Enable omni completion.
" autocmd FileType css setlocal omnifunc=csscomplete#CompleteCSS
" autocmd FileType html,markdown setlocal omnifunc=htmlcomplete#CompleteTags
" autocmd FileType javascript setlocal omnifunc=javascriptcomplete#CompleteJS
" autocmd FileType python setlocal omnifunc=pythoncomplete#Complete
" autocmd FileType xml setlocal omnifunc=xmlcomplete#CompleteTags

" Reload changes if file changed outside of vim requires autoread
augroup load_changed_file
    autocmd!
    autocmd FocusGained,BufEnter * if mode() !=? 'c' | checktime | endif
    autocmd FileChangedShellPost * echo "Changes loaded from source file"
augroup END

" when quitting a file, save the cursor position
augroup save_cursor_position
    autocmd!
    autocmd BufReadPost * call setpos(".", getpos("'\""))
augroup END

" when not running in a console or a terminal that doesn't support 256 colors
" enable cursorline in the currently active window and disable it in inactive ones
if $DISPLAY !=? '' && &t_Co == 256
    augroup cursorline
        autocmd!
        autocmd VimEnter,WinEnter,BufWinEnter * setlocal cursorline
        autocmd WinLeave * setlocal nocursorline
    augroup END
endif

" when entering insert mode, relative line
" numbers are turned off, leaving absolute line numbers turned on
augroup numbertoggle
  autocmd!
  autocmd BufEnter,FocusGained,InsertLeave * set number relativenumber
  autocmd BufLeave,FocusLost,InsertEnter   * set number norelativenumber
augroup END

hi clear CursorLine
augroup CLClear
    autocmd! ColorScheme * hi clear CursorLine
augroup END

hi CursorLineNR cterm=bold
augroup CLNRSet
    set cursorline
    autocmd! ColorScheme * hi CursorLineNR cterm=bold
augroup END

" define indent-based folding, after loading a file switch to manual folding
augroup vimrc
  autocmd!
  au BufReadPre * setlocal foldmethod=indent
  au BufWinEnter * if &fdm == 'indent' | setlocal foldmethod=manual | endif
augroup END

"" autosave and load views
augroup save_load_views
    autocmd!
    " au BufWinLeave ?* mkview
    " au BufWinLeave *.* silent mkview
    " au BufWinLeave ?* mkview
    " au VimLeavePre ?* mkview
    " au BufWinEnter ?* silent loadview
    " au BufReadPost ?* loadview
    " au BufWinEnter,BufRead *.* loadview
    " au BufWinEnter ?* loadview
    au BufLeave *.* mkview
    au BufWinEnter *.* loadview
augroup END

augroup filetypes
    autocmd!
    au FileType xml setlocal shiftwidth=4 tabstop=4
    au FileType html setlocal shiftwidth=4 tabstop=4

    au BufNewFile,BufRead *.js
        \ setlocal shiftwidth=4 tabstop=4 softtabstop=4 expandtab autoindent
        \ fileformat=unix filetype=js

    au BufNewFile,BufRead,BufEnter *.md
        \ setlocal textwidth=79 foldmethod=manual filetype=markdown
        \ fileformat=unix expandtab

    au FileType sway setl textwidth=99
        \ tabstop=4 shiftwidth=4 softtabstop=4 noexpandtab autoindent

    au FileType rust setl
        \ tabstop=8 shiftwidth=8 softtabstop=8 noexpandtab autoindent ff=unix

    au BufNewFile,BufRead *.py,*.pyw,*.pyx,?akefil*
        \ setlocal tabstop=4 shiftwidth=4 noexpandtab autoindent
        \ fileformat=unix

    " Linux kernel style tabs - not for cpp
    " au BufNewFile,BufRead,BufEnter *.c,*.h,*.cpp
    au BufNewFile,BufRead,BufEnter *.c,*.h
        \ set tabstop=8 shiftwidth=8 softtabstop=8 noexpandtab autoindent
        \ textwidth=79 fileformat=unix omnifunc=lsp#complete

    au BufNewFile,BufRead,BufEnter *.cpp,*.h,*.hpp
        \ set tabstop=4 shiftwidth=4 softtabstop=4 noexpandtab autoindent
        \ textwidth=79 fileformat=unix omnifunc=lsp#complete ft=cpp
        " \ textwidth=79 fileformat=unix
    au FileType cpp
        \ set tabstop=4 shiftwidth=4 softtabstop=4 noexpandtab autoindent
        \ textwidth=79 fileformat=unix omnifunc=lsp#complete
        " \ textwidth=79 fileformat=unix


    au FileType tex setlocal tabstop=2

    au BufNewFile,BufRead,BufEnter *.tex
        \ setlocal tabstop=2 shiftwidth=2 softtabstop=2 expandtab autoindent
        \ textwidth=79 fileformat=unix conceallevel=0

    au BufNewFile,BufRead,BufEnter *.bib
        \ setlocal ft=bib tabstop=2 shiftwidth=2 softtabstop=2 noexpandtab autoindent
        \ fileformat=unix conceallevel=0

    autocmd FileType yaml setlocal ts=2 sts=2 sw=2 expandtab indentkeys-=0#
        \ indentkeys-=<:> foldmethod=indent nofoldenable

    au BufNewFile,BufRead,BufEnter *.cs
        \ setlocal ft=cs tabstop=4 shiftwidth=4 softtabstop=4 noexpandtab autoindent
        \ textwidth=79 fileformat=unix conceallevel=0

    au BufNewFile,BufRead *.cshtml
        \ setlocal ft=csh tabstop=4 shiftwidth=4 softtabstop=4 noexpandtab autoindent
        \ textwidth=79 fileformat=unix conceallevel=0

    " no autocomments, for example when entering insert mode above or below a
    " commented line
    autocmd FileType * setlocal formatoptions-=c formatoptions-=r formatoptions-=o
augroup END


augroup line_too_long
	autocmd!
	autocmd winEnter,BufEnter * call clearmatches() | call matchadd('ColorColumn', '\%>80v', 100)
augroup END

augroup async_plug_load
    autocmd!
    " these plugins take the longest to load, let's do it in a semi-non-blocking
    " fashion
    autocmd CursorHold,CursorHoldI *  call plug#load('vim-clang', 'vim-speeddating')
    \| autocmd! async_plug_load
augroup END


if executable('clangd')
  augroup lsp_clangd
    autocmd!
    autocmd User lsp_setup call lsp#register_server({
      \ 'name': 'clangd',
      \ 'cmd': {server_info->['clangd']},
      \ 'allowlist': ['c', 'cpp'],
      \ })
  augroup END
endif
if executable('gopls')
  augroup lsp_go
    autocmd!
    autocmd User lsp_setup call lsp#register_server({
      \   'name': 'gopls',
      \   'cmd': ['gopls', '-remote=unix;/tmp/.gopls-daemon.sock'],
      \   'allowlist': ['go', 'gomod', 'gosum','gotexttmpl','gohtmltmpl'],
      \   'gofumpt': 'true',
      \ })
  augroup END
endif
if executable('rnix-lsp')
  augroup lsp_nix
  autocmd!
    au User lsp_setup call lsp#register_server({
        \ 'name': 'rnix-lsp',
        \ 'cmd': {server_info->[&shell, &shellcmdflag, 'rnix-lsp']},
        \ 'allowlist': ['nix'],
        \ })
  augroup END
endif
" zig language server
if executable('zls')
  augroup lsp_zig
  autocmd!
    au User lsp_setup call lsp#register_server({
        \ 'name': 'zls',
        \ 'cmd': {server_info->[&shell, &shellcmdflag, 'zls']},
        \ 'allowlist': ['zig'],
        \ })
  augroup END
endif
if executable('pyls')
    " pip install python-language-server
    augroup lsp_py
        autocmd!
        autocmd User lsp_setup call lsp#register_server({
            \ 'name': 'pyls',
            \ 'cmd': {server_info->['pyls']},
            \ 'allowlist': ['python'],
            \ })
    augroup END
endif
if executable('omnisharp')
" https://www.rockyourcode.com/use-vim-for-c-sharp-development-on-linux/
augroup lsp_omnisharp
    autocmd!
    autocmd User lsp_setup call lsp#register_server({
                \ 'name': 'omnisharp-roslyn',
                \ 'cmd': {_->[&shell, &shellcmdflag, 'mono $HOME/.bin/omnisharp/omnisharp --languageserver']},
                \ 'whitelist': ['cs']
                \})

    autocmd User lsp_server_init call <SID>setup_ls()
    autocmd BufEnter * call <SID>setup_ls()
  augroup END
endif

function! s:on_lsp_buffer_enabled() abort
    setlocal omnifunc=lsp#complete
    setlocal signcolumn=yes
    if exists('+tagfunc') | setlocal tagfunc=lsp#tagfunc | endif
    nmap <buffer> gd <plug>(lsp-definition)
    nmap <buffer> gs <plug>(lsp-document-symbol-search)
    nmap <buffer> gS <plug>(lsp-workspace-symbol-search)
    nmap <buffer> gr <plug>(lsp-references)
    nmap <buffer> gi <plug>(lsp-implementation)
    " nmap <buffer> gt <plug>(lsp-type-definition)
    nmap <buffer> <leader>rn <plug>(lsp-rename)
    nmap <buffer> [g <plug>(lsp-previous-diagnostic)
    nmap <buffer> ]g <plug>(lsp-next-diagnostic)
    nmap <buffer> K <plug>(lsp-hover)
    inoremap <buffer> <expr><c-f> lsp#scroll(+4)
    inoremap <buffer> <expr><c-d> lsp#scroll(-4)

    " let g:lsp_format_sync_timeout = 1000
    let g:lsp_format_sync_timeout = 700
    augroup lsp_format_sync
        autocmd!
        autocmd! BufWritePre *.rs,*.go call execute('LspDocumentFormatSync')
    augroup END

    " refer to doc to add more commands
endfunction

augroup lsp_install
    au!
    " call s:on_lsp_buffer_enabled only for languages that have the server
    " registered.
    autocmd User lsp_buffer_enabled call s:on_lsp_buffer_enabled()
augroup END


augroup omnisharp_commands
  autocmd!

  " Show type information automatically when the cursor stops moving.
  " Note that the type is echoed to the Vim command line, and will overwrite
  " any other messages in this space including e.g. ALE linting messages.
  autocmd CursorHold *.cs OmniSharpTypeLookup

  " The following commands are contextual, based on the cursor position.
  autocmd FileType cs nmap <silent> <buffer> gd <Plug>(omnisharp_go_to_definition)
  autocmd FileType cs nmap <silent> <buffer> <Leader>osfu <Plug>(omnisharp_find_usages)
  autocmd FileType cs nmap <silent> <buffer> <Leader>osfi <Plug>(omnisharp_find_implementations)
  autocmd FileType cs nmap <silent> <buffer> <Leader>ospd <Plug>(omnisharp_preview_definition)
  autocmd FileType cs nmap <silent> <buffer> <Leader>ospi <Plug>(omnisharp_preview_implementations)
  autocmd FileType cs nmap <silent> <buffer> <Leader>ost <Plug>(omnisharp_type_lookup)
  autocmd FileType cs nmap <silent> <buffer> <Leader>osd <Plug>(omnisharp_documentation)
  autocmd FileType cs nmap <silent> <buffer> <Leader>osfs <Plug>(omnisharp_find_symbol)
  autocmd FileType cs nmap <silent> <buffer> <Leader>osfx <Plug>(omnisharp_fix_usings)
  autocmd FileType cs nmap <silent> <buffer> <C-\> <Plug>(omnisharp_signature_help)
  autocmd FileType cs imap <silent> <buffer> <C-\> <Plug>(omnisharp_signature_help)

  " Navigate up and down by method/property/field
  autocmd FileType cs nmap <silent> <buffer> [[ <Plug>(omnisharp_navigate_up)
  autocmd FileType cs nmap <silent> <buffer> ]] <Plug>(omnisharp_navigate_down)
  " Find all code errors/warnings for the current solution and populate the quickfix window
  autocmd FileType cs nmap <silent> <buffer> <Leader>osgcc <Plug>(omnisharp_global_code_check)
  " Contextual code actions (uses fzf, vim-clap, CtrlP or unite.vim selector when available)
  autocmd FileType cs nmap <silent> <buffer> <Leader>osca <Plug>(omnisharp_code_actions)
  autocmd FileType cs xmap <silent> <buffer> <Leader>osca <Plug>(omnisharp_code_actions)
  " Repeat the last code action performed (does not use a selector)
  autocmd FileType cs nmap <silent> <buffer> <Leader>os. <Plug>(omnisharp_code_action_repeat)
  autocmd FileType cs xmap <silent> <buffer> <Leader>os. <Plug>(omnisharp_code_action_repeat)

  autocmd FileType cs nmap <silent> <buffer> <Leader>os= <Plug>(omnisharp_code_format)

  autocmd FileType cs nmap <silent> <buffer> <Leader>osnm <Plug>(omnisharp_rename)

  autocmd FileType cs nmap <silent> <buffer> <Leader>osre <Plug>(omnisharp_restart_server)
  autocmd FileType cs nmap <silent> <buffer> <Leader>osst <Plug>(omnisharp_start_server)
  autocmd FileType cs nmap <silent> <buffer> <Leader>ossp <Plug>(omnisharp_stop_server)
augroup END


" ------ adv maps ------

" strip trailing whitespace, ss (strip space)
nnoremap <silent> <Leader>ss
    \ :let b:_p = getpos(".") <Bar>
    \  let b:_s = (@/ != '') ? @/ : '' <Bar>
    \  %s/\s\+$//e <Bar>
    \  let @/ = b:_s <Bar>
    \  nohlsearch <Bar>
    \  unlet b:_s <Bar>
    \  call setpos('.', b:_p) <Bar>
    \  unlet b:_p <CR>

match Todo /\s\+$/


set softtabstop=4
set tabstop=4
set shiftwidth=4
set expandtab
set smarttab

set errorformat+=%.%#PHP:\ %m\ \(in\ %f\ on\ line\ %l\)%.%#,
  \%E%[0-9]%#.%m:%f?rev=%.%##L%l\ %.%#,%C%.%#


set tags=.tags;

set incsearch                 " incrimental search
set hlsearch                  " highlighting when searching

set wrapscan                  " go back to beginning of a buffer once we reach end
set ignorecase                " searches are case insensitive...
set smartcase                 " ... unless they contain at least one capital letter

set autoindent
set backspace=2

set splitbelow splitright     " splits open at bottom and right
set lazyredraw                " don't redraw while executing macros (good performance config)
set ttyfast

set listchars=trail:•,tab:>-,nbsp:☣,eol:¬,extends:❯,precedes:❮
set nolist                    " show/hide tabs and EOL chars (hidden characters)

" don't indent wrapped lines
set nobreakindent

set confirm                   " ask confirmation like save before quit.
set wildmenu                  " Tab completion menu when using command mode
" https://bitbucket.org/sjl/dotfiles/src/tip/vim/vimrc#cl-153
set wildignore+=.hg,.git,.svn                    " Version control
set wildignore+=*.aux,*.out,*.toc                " LaTeX intermediate files
set wildignore+=*.jpg,*.bmp,*.gif,*.png,*.jpeg   " binary images
set wildignore+=*.o,*.obj,*.exe,*.dll,*.manifest " compiled object files
set wildignore+=*.dwo                            " DWARF debug object files
set wildignore+=*.spl                            " compiled spelling word lists
set wildignore+=*.pyc                            " Python byte code
set wildignore+=node_modules/**
set wildmode=longest:longest,full

" filler lines to keep text position; start diff with vertical splits; don't
" ignore case and whitespace changes
set diffopt=filler,vertical

set scrolloff=5               " scroll offset, min lines above/below cursor
"set scrolljump=5             " jump 5 lines when running out of the screen - NO
set sidescroll=10             " minimum columns to scroll horizontally
set showcmd                   " show command status
set showmatch                 " flashes matching parenthese when cursor over the other one
" Make <,> match pairs, too.
" https://github.com/EHartC/dot-vimrc/blob/master/vim%20config/styling.vim
set matchpairs+=<:>
set matchtime=2               " how many tenths of a second to blink when matching brackets
set noshowmode                " show editing mode in status (-- INSERT --)
set ruler                     " show cursor position
set colorcolumn=80            " Highlight column 80 to get coding horizontal bound.
set noerrorbells              " bells in vim
set viminfo='50,"50           " '=marks for x files, "=registers for x files

set foldmethod=manual         " manual folding

set encoding=utf-8            " important for powerline besides others
set fileencoding=utf-8        " set encoding for newly saved files
set noscrollbind
set cmdheight=2               " lines under {status,air}line
set updatetime=250

set termguicolors
colo space_vim_theme          " new fav highlighting
" compensate for lack of theme italics
for s in ["Comment", "Constant", "Include", "Define", "Macro", "Delimiter", "Debug", "Identifier", "Boolean", "markdownItalic"]
    execute "hi " s " cterm=italic"
endfor

" vimtex highlight groups
hi! link texMathEnvArgName texEnvArgName
hi! link texMathZone LocalIdent
hi! link texMathZoneEnv texMathZone
hi! link texMathZoneEnvStarred texMathZone
hi! link texMathZoneX texMathZone
hi! link texMathZoneXX texMathZone
hi! link texMathZoneEnsured texMathZone

set conceallevel=0            " for jsons
set ttymouse=sgr              " tmux mouse behaviour
set mouse=a                   " enable mouse in n,v,i,c,h modes


" persistent undo history (even if close buffer)
" Save undos after file closes
set undofile
" where to save undo histories
set undodir=~/.vim/undo//
" How many undos
set undolevels=2000
" save whole buffer for undo on reload if number of lines is smaller than
set undoreload=10001
" make folders automatically if they don't already exist
if !isdirectory(expand(&undodir))
  call mkdir(expand(&undodir), 'p')
endif

set nobackup
set nowritebackup
set directory=~/.vim/swp//
if !isdirectory(expand(&directory))
  call mkdir(expand(&directory), 'p')
endif


set laststatus=2              " show powerline status bar
set t_Co=256
set guifont=Fira\ Code\ weight=450\ 12

set ballooneval               " vim8+ popups
let g:netrw_beval = 1
set t_vb=

" cursorline optimizations
set cursorlineopt=number
syntax sync minlines=256

" use +/clipboard as default register
set clipboard=unnamedplus

" vim help had this to say about 'exrc':
"
" Enables the reading of .vimrc, .exrc and .gvimrc in the current directory.
" Setting this option is a potential security leak. E.g., consider unpacking
" a package or fetching files from github, a .vimrc in there might be a trojan
" horse. BETTER NOT SET THIS OPTION!
" Instead, define an autocommand in your .vimrc to set options for a matching
" directory.
"
" but since it's needed for direnv, we have to enable it.
set exrc
set secure


function! AskQuit (msg, proposed_action)
    if confirm(a:msg, "&Quit?\n" . a:proposed_action) == 1
        exit
    endif
endfunction

function! EnsureDirExists ()
    let required_dir = expand('%:h')
    if !isdirectory(required_dir)
        call AskQuit('Directory "' . required_dir . '" doesn''t exist.', '&Create it?')

        try
            call mkdir( required_dir, 'p' )
        catch
            call AskQuit('Can''t create "' . required_dir . '"', '&Continue anyway?')
        endtry
    endif
endfunction

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


" as per https://stackoverflow.com/a/38775966
function! HeaderToggle() " bang for overwrite when saving vimrc
let file_path = expand('%')
let file_name = expand('%<')
let extension = split(file_path, '\.')[-1] " '\.' is how you really split on dot
let err_msg = 'There is no file '

if extension ==# 'cpp'
	let next_file = join([file_name, '.h'], '')

	if filereadable(next_file)
	:e %<.h
	else
		echo join([err_msg, next_file], '')
	endif
elseif extension ==# 'h'
	let next_file = join([file_name, '.cpp'], '')

	if filereadable(next_file)
		:e %<.cpp
	else
		echo join([err_msg, next_file], '')
	endif
endif
endfunction
nnoremap <leader>hh :call HeaderToggle()<cr>

if(&filetype ==# 'c') || (&filetype ==# 'cpp')
  if isdirectory('include')
    set path+=include
  elseif isdirectory('inc')
    set path+=inc
  elseif isdirectory('src/include')
    set path+=src/include
  endif
endif


silent function! LINUX()
  return has('unix') && !has('macunix') && !has('win32unix')
endfunction


" note: this might be outdated at this point, I am not sure.
" https://github.com/bling/vim-airline/issues/539
function! RefreshUI()
  if exists(':AirlineRefresh')
    AirlineRefresh
  else
    " Clear & redraw the screen, then redraw all statuslines.
    redraw!
    redrawstatus!
  endif
endfunction

" from vim wiki
augroup autoReloadVimRC
  autocmd!
  " automatically reload vimrc when it's saved
  autocmd BufWritePost ~/.vimrc so ~/.vimrc | call RefreshUI()
augroup END

" reload config
nnoremap <Leader>ve :e $MYVIMRC<CR>
" reload config and call refresh fn
nnoremap <Leader>vr :source $MYVIMRC<CR>call RefreshUI()<CR>

" https://sw.kovidgoyal.net/kitty/faq/#using-a-color-theme-with-a-background-color-does-not-work-well-in-vim
" work wround vim's background colour erase
let &t_ut=''

" as per https://github.com/direnv/direnv/wiki/Vim
if exists('$EXTRA_VIM')
  for path in split($EXTRA_VIM, ':')
    exec 'source '.path
  endfor
endif

" vim: ft=vim ff=unix expandtab ts=2 sw=2