" // Startup ///////////////////////////////////////////////////////////////////
" Windows/Linux differences
let s:running_windows = has("win16") || has("win32") || has("win64")

set nocompatible

if s:running_windows
  let g:myvimdir ="~/vimfiles"
  silent! call plug#begin('~/vimfiles/plugged')
else
  let g:myvimdir ="~/.vim"
  silent! call plug#begin('~/.vim/plugged')
endif

" {on} Means to lazy-load when that command is invoked
Plug 'https://github.com/ervandew/supertab'
Plug 'https://github.com/scrooloose/nerdtree', { 'on': 'NERDTreeToggle' }
Plug 'https://github.com/tpope/vim-dispatch'
Plug 'https://github.com/tpope/vim-fugitive'
Plug 'https://github.com/bfrg/vim-cpp-modern'

Plug 'https://github.com/junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'https://github.com/junegunn/fzf.vim'

" Themes
Plug 'https://github.com/whatyouhide/vim-gotham'
Plug 'https://github.com/tomasr/molokai'
Plug 'https://github.com/roosta/vim-srcery'
Plug 'https://github.com/morhetz/gruvbox'

call plug#end()

" // General Settings //////////////////////////////////////////////////////////
set autowrite     " Automatically save before commands like :next and :make
set autoread      " Auto reload changed files
set backspace=2   " Backspace like most programs in insert mode
set hidden        " Allow more than one modified buffer to be left without saving
set incsearch     " Do incremental searching
set ignorecase    " Search isn't case sensitive
set lazyredraw    " Redraw the screen less often
set nowrap        " No softwrapping by default
set splitright    " Open new v-splits to the right
set showcmd       " Display incomplete commands
set vb            " Turn on screen flash which is quieter than audio bell
set wildmenu      " Allow vim command-line autocompletion
set wildmode=full " Specifies option for wildmenu
set expandtab     " Turn tabs into spaces

set noswapfile    " Disable swapfile
set cscopetag     " Search both cscopes db and tags file"

" Ignore files in commandline autocomplete
set wildignore+=*.class,*.o
set wildignore+=*\\tmp\\*,*.swp,*.zip,*.exe,*.obj,*.vcxproj,*.pdb,*.idb

" Undo Settings
silent! set undofile                       " Save undo history to file
set undolevels=1000                        " Maximum number of undos that can be done
let &undodir=expand(g:myvimdir."/undodir") " Set location to save undo files

" Create the undo history folder if it doesn't exist
if !isdirectory(expand(&undodir))
  call mkdir(expand(&undodir), "p")
endif

" // Appearance ////////////////////////////////////////////////////////////////
" Fix C-syntax highlighting marking valid curly braces as invalid
" let c_no_curly_error=1

syntax on              " syntax highlighting
set laststatus=2       " always show status bar
set ruler              " show the cursor position all the time
set guioptions=        " remove extra gui elements
set cpoptions+=$       " $ as end marker for the change operator
set showmatch          " automatically show matching brackets. works like it does in bbedit.
set number             " Show line numbers
set relativenumber     " Show relative line numbers
set background=dark    " Some themes use this indicator to theme themselves
set cursorline         " Highlight current line
set colorcolumn=80,100 " Set a 80, 100 char column marker

" Show EOL type and last modified timestamp, right after the filename
set statusline=%<%F%h%m%r\ [%{&ff}]\ (%{strftime(\"%H:%M\ %d/%m/%Y\",getftime(expand(\"%:p\")))})%=%l,%c%V\ %P

" Resize splits when the window is resized
au VimResized * :wincmd =

set autoindent        " Always use autoindent
set encoding=utf-8    " Consistent character encoding
set foldnestmax=1     " Maximum number of nested folds
" set foldlevel=99    " Initially all folds open
set foldlevelstart=99 " Initially all folds open
set foldmethod=indent " Allow folding of
set linebreak         " When wrapping lines, don't break words
set list              " Show 'listchar' characters
set shiftwidth=2      " Number of space chars for indentation
set smartindent
set smarttab          " Make 'tab' insert indents at the beginning of a line
set tabstop=2         " Number of space chars for pressing tab
set textwidth=80      " Always format to 80 chars
set fileformats=unix,dos

set listchars=tab:>-

let g:gruvbox_contrast_dark='hard'
let g:gruvbox_italic=0
let g:gruvbox_bold=0
colorscheme gruvbox

if has("gui_running")

	" NOTE(doyle): Some list chars in gui don't show correctly in terminal so separate logic
	" old listchars=tab:>-,eol:¬,trail:■,extends:»,precedes:«
	set listchars+=trail:■,extends:»,precedes:«

	if s:running_windows
    set guifont=Consolas:h11
  else
    set guifont=InputMonoCondensed:h10
	endif

	" Don't show trailing spaces in insert mode
	augroup trailing
	  au!
	  au InsertEnter * :set listchars-=trail:■
	  au InsertLeave * :set listchars+=trail:■
	augroup END
else
	set t_Co=256            " 256 colors
	let &t_AB="\e[48;5;%dm" " vodoo magic for CONEMU
	let &t_AF="\e[38;5;%dm" " vodoo magic for CONEMU

	set listchars+=trail:$,extends:>,precedes:<

	" Fix Cmder backspace bug
	inoremap <Char-0x07F> <BS>
	nnoremap <Char-0x07F> <BS>
endif

augroup persistent_settings
  au!
  " Formatting options (see :h fo-table)
  au BufEnter * :set formatoptions=q1j
augroup END

" Key Mappings & Functions ///////////////////////////////////////////////////////
" Enable mouse support
if has('mouse')
    set mouse=a
endif

" Map Ctrl+HJKL to navigate buffer window
nmap <silent> <C-h> :wincmd h<CR>
nmap <silent> <C-j> :wincmd j<CR>
nmap <silent> <C-k> :wincmd k<CR>
nmap <silent> <C-l> :wincmd l<CR>

" Move by wrapped lines instead of line numbers
nnoremap j gj
nnoremap k gk
nnoremap gj j
nnoremap gk k

" Map NERDTree to Ctrl-N
map <C-n> :NERDTreeToggle<CR>

" Change to current buffer's directory
nmap cd :cd <C-R>=expand("%:p:h")<CR><CR>

" Show list of buffers using leader key (default \)b
nnoremap <leader>b :Buffers<CR>
nnoremap <leader>s :vs<CR>
nnoremap <leader>f :Files<CR>
nnoremap <leader>t :Tags<CR>
nnoremap <leader>l :Lines<CR>
nnoremap <leader>a :Ag<CR>

" Execute clang format on tab
if s:running_windows
	map <C-I> :pyf $home/clang-format.py<CR>
	imap <C-I> <ESC>:pyf $home/clang-format.py<CR>i
else
	map <C-I> :py3f ~/.vim/clang-format.py<CR>
	imap <C-I> <ESC>:py3f ~/.vim/clang-format.py<CR>i
endif

" Increase font size using (Ctrl+Up Arrow) or (Ctrl+Down Arrow) if we are using
" gvim Otherwise font size is determined in terminal
if has ('gui_running')
	nnoremap <C-Up> :silent! let &guifont = substitute(
	 \ &guifont,
	 \ ':h\zs\d\+',
	 \ '\=eval(submatch(0)+1)',
	 \ 'g')<CR>
	nnoremap <C-Down> :silent! let &guifont = substitute(
	 \ &guifont,
	 \ ':h\zs\d\+',
	 \ '\=eval(submatch(0)-1)',
	 \ 'g')<CR>
endif

" Reload vimrc when it's edited
augroup myvimrc
	au!
	au BufWritePost $MYVIMRC so $MYVIMRC
augroup end

" Return to the same line when a file is reopened
augroup line_return
  au!
  au BufReadPost *
        \ if line("'\"") > 0 && line("'\"") <= line("$") |
        \     execute 'normal! g`"zvzz' |
        \ endif
augroup end

" Error message formats thanks to
" https://forums.handmadehero.org/index.php/forum?view=topic&catid=4&id=704#3982
set errorformat+=\\\ %#%f(%l\\\,%c):\ %m                       " MSVC: MSBuild
set errorformat+=\\\ %#%f(%l)\ :\ %#%t%[A-z]%#\ %m             " MSVC: cl.exe
set errorformat+=\\\ %#%t%nxx:\ %m                             " MSVC: cl.exe, fatal errors is crudely implemented
set errorformat+=\\\ %#LINK\ :\ %m                             " MSVC: link.exe, can't find link library badly implemented
set errorformat+=\\\ %#%s\ :\ error\ %m                        " MSVC: link.exe, errors is badly implemented
set errorformat+=\\\ %#%s\ :\ fatal\ error\ %m                 " MSVC: link.exe, fatal errors is badly implemented
set errorformat+=\\\ %#%f(%l\\\,%c-%*[0-9]):\ %#%t%[A-z]%#\ %m " MSVC: HLSL fxc.exe
set errorformat+=%\\%%(CTIME%\\)%\\@=%m                        " ctime.exe -stats

if s:running_windows
    set makeprg=build
    nnoremap <A-r> :!start cmd /c run<CR>
else
    " Set vim terminal to enter normal mode using escape like normal vim behaviour
    tnoremap <Esc> <C-\><C-n>
    set makeprg=./build.sh
endif

"Go to next error
"Go to previous error
nnoremap <f5> :Make<cr>
nnoremap <A-n> :cn<CR>
nnoremap <A-p> :cp<CR>


" Push Quickfix (qf) window to the bottom of the screen.
autocmd FileType qf wincmd J

" Resize Quickfix (qf) to a maximum of 10 lines depending on the actual contents
au FileType qf call AdjustWindowHeight(3, 10)
function! AdjustWindowHeight(minheight, maxheight)
  exe max([min([line("$"), a:maxheight]), a:minheight]) . "wincmd _"
endfunction

" Fzf
let g:fzf_tags_command = 'ctags -R --c++-kinds=+p --fields=+iaS'