" --- https://github.com/junegunn/vim-plug ------------------------------
" Minimalist plugin manager. Update with --> :PlugInstall 
 " 
call plug#begin('~/.local/share/nvim/plugged')

Plug 'flazz/vim-colorschemes'         " molokai, PaperColor, etc
Plug 'scrooloose/nerdcommenter'       " toggle comments and so on
Plug 'vim-airline/vim-airline'        " nice status bar
Plug 'vimlab/split-term.vim'          " better split neovim terminal
Plug 'mhinz/vim-sayonara'             " smart buffer quitting
Plug 'majutsushi/tagbar'              " show file tags (require ctags)
Plug 'kien/ctrlp.vim'                 " fuzzy finder (files, buffer, tags)
Plug 'jiangmiao/auto-pairs'           " Insert quotes/brackets in pairs
Plug 'tpope/vim-obsession'            " create/restore vim sessions
Plug 'scrooloose/nerdtree'            " tree explorer

"Plug 'Shougo/deoplete.nvim'
"Plug 'davidhalter/jedi'
"Plug 'zchee/deoplete-jedi' 
" Plug 'davidhalter/jedi-vim'

Plug 'roxma/nvim-completion-manager'  " async, dynamic, completion


call plug#end()
" -----------------------------------------------------------------------

colorscheme molokai

behave mswin
set clipboard=unnamed
"set clipboard=unnamedplus
"
set colorcolumn=80
set nowrap

set showcmd             " Show (partial) command in status line.
set showmatch           " Show matching brackets.
set showmode            " Show current mode.
set ruler               " Show the line and column numbers of the cursor.
set number              " Show the line numbers on the left side.
set formatoptions+=o    " Continue comment marker in new lines.
set textwidth=0         " Hard-wrap long lines as you type them.
set expandtab           " Insert spaces when TAB is pressed.
set tabstop=4           " Render TABs using this many spaces.
set shiftwidth=4        " Indentation amount for < and > commands.

set noerrorbells        " No beeps.
set modeline            " Enable modeline.
set esckeys             " Cursor keys in insert mode.
set linespace=0         " Set line-spacing to minimum.
set nojoinspaces        " Prevents inserting two spaces after punctuation on a join (J)

set ignorecase          " ignore case on vim command/completion
set infercase           " smart case insensitivity

" More natural splits
set splitbelow          " Horizontal split below current.
set splitright          " Vertical split to right of current.

if !&scrolloff
  set scrolloff=3       " Show next 3 lines while scrolling.
endif
if !&sidescrolloff
  set sidescrolloff=5   " Show next 5 columns while side-scrolling.
endif
set nostartofline       " Do not jump to first character with page commands.

" with infinite undo and a bit of saving addiction, those aren't needed
set nobackup
set noswapfile
set undofile                 "turn on the feature
set undodir=$HOME/.config/nvim/undo
set undolevels=1000         " How many undos
set undoreload=10000        " number of lines to save for undo

" ============================================================================
" FILE ESPECIFICS

" use hard tab only on Makefiles (to avoid missing separator error)
autocmd Filetype make setlocal noexpandtab shiftwidth=4 softtabstop=0
autocmd Filetype yaml setlocal tabstop=4 softtabstop=4 shiftwidth=4

autocmd BufNewFile,BufReadPost *.ino,*.pde set filetype=cpp

" ============================================================================
" KEY MAPPINGS

" space enter insertion mode (<esc> still goes back to normal mode)
map <space> i

" disable ex mode
map Q <Nop>

let mapleader=","

nmap <F2> :TagbarToggle<CR>
imap <F2> :TagbarToggle<CR>

nmap <F3> :NERDTreeToggle<CR>

map  <F10> :ed ~/.config/nvim/init.vim<cr>

" open terminal split [term-split.vim]
map <C-t> :50VTerm<CR>
map <C-e> :40VTerm make<CR>

" delete buffer without closing the window [bclose.vim]
nnoremap q :Sayonara<cr>
nnoremap <C-q> :qa<cr>
inoremap <C-q> <Esc>:Sayonara<cr>
"nnoremap <C-d> :Sayonara<cr>
"inoremap <C-d> :Sayonara<cr>

" toggle comment [NERD commenter]
map <Return> <C-g><leader>c<space>
smap <Return> <C-g><leader>c<space>

" delete word under cursor
noremap <C-Space> ciw
inoremap <C-Space> <ESC>ciw

" easy tab ident
vnoremap <Tab> >
vnoremap <S-Tab> <
 
" easier split navigation
map <C-S-Left> <C-w>h
map <C-S-Right> <C-w>l
map <C-S-Down> <C-w>j
map <C-S-Up> <C-w>k    
nmap <Tab> <C-w>w

" move cursor by n lines
nnoremap <C-Up> 5-
nnoremap <C-Down> 5+
inoremap <C-Up> <C-o>5-
inoremap <C-Down> <C-o>5+

" CTRL-Z is Undo; not in cmdline though
noremap <C-Z> u
inoremap <C-Z> <C-O> <Esc>

noremap <C-Y> <C-R>
inoremap <C-Y> <C-O><C-R>

vnoremap <C-X> "+x
vnoremap <C-C> "+y
"map <C-V>		"+gP

" CTRL-S for saving (require "stty -ixon" line on ~/.bashrc)
noremap <silent> <C-S>          :update<CR>
vnoremap <silent> <C-S>         <C-C>:update<CR>
inoremap <silent> <C-S>         <C-O>:update<CR><Esc>

" Switching buffers
map <C-PageDown> :bnext!<cr>
map <C-PageUp> :bprevious!<cr>
imap <C-PageDown> <ESC>:bnext!<cr>
imap <C-PageUp> <ESC>:bprevious!<cr>

" enter CtrlP tag fuzzy search [ctrp.vim]
noremap <C-o> :CtrlPBufTag<CR>
noremap <C-l> :CtrlPLine<CR>

"tnoremap <Esc> <C-\><C-n>

" keep terminal buffer hidden on background on bn
autocmd TermOpen * set bufhidden=hide

let python_highlight_all = 1

" --- Airline -----------------------------------------------------------------

" show buffer bar
let g:airline#extensions#tabline#enabled = 1

" Show just the filename
let g:airline#extensions#tabline#fnamemod = ':t'


" --- CtrlP -------------------------------------------------------------------
"
let g:ctrlp_map = '<c-p>'
let g:ctrlp_cmd = 'CtrlP'
" let g:ctrlp_cmd = 'CtrlPLastMode'

   let g:ctrlp_extensions = ['buffertag', 'tag', 'line', 'dir']

let g:ctrlp_custom_ignore = {
  \ 'dir':  '\v[\/]\.(git|hg|svn|venv)$',
  \ 'file': '\v\.(exe|so|dll)$',
  \ 'link': 'some_bad_symbolic_links',
  \ }


let g:tagbar_map_togglesort = "r"
let g:tagbar_map_preview = "<CR>"
let g:tagbar_map_jump = "<C-CR>"
let g:tagbar_autofocus = 1 
let g:tagbar_expand = 1
let g:tagbar_indent = 1
let g:tagbar_compact = 1
let g:tagbar_sort = 0
let g:tagbar_width = 25


"let g:deoplete#enable_at_startup=1
"let g:deoplete#enable_refresh_always=0
"let g:deoplete#file#enable_buffer_path=1
"let g:deoplete#auto_completion_start_length = 0

"function! Completefunc(findstart, base)
    "return "\<c-x>\<c-p>"
"endfunction

" Don't let autocomplete affect usual typing habits
"set completeopt=menuone,preview,noinsert

""""""" Jedi-VIM """""""
" Don't mess up undo history<Paste>
"let g:jedi#show_call_signatures = "0"


"let g:deoplete#sources#jedi#show_docstring = 1


" for python completions
"let g:python_support_python3_requirements = add(get(g:,'python_support_python3_requirements',[]),'jedi')
" language specific completions on markdown file
"let g:python_support_python3_requirements = add(get(g:,'python_support_python3_requirements',[]),'mistune')

" utils, optional
"let g:python_support_python3_requirements = add(get(g:,'python_support_python3_requirements',[]),'psutil')
"let g:python_support_python3_requirements = add(get(g:,'python_support_python3_requirements',[]),'setproctitle')

"inoremap <expr> <Tab> pumvisible() ? "\<C-n>" : "\<Tab>"
"inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"
"inoremap <expr> <CR> (pumvisible() ? "\<c-y>\<cr>" : "\<CR>")

"set shortmess+=c 

"let g:cm_auto_popup = 0
"
"

inoremap <expr><tab> pumvisible() ? "\<c-n>" : "\<tab>"


"let g:deoplete#disable_auto_complete = 1

"inoremap <silent><expr> <TAB>
"\ pumvisible() ? "\<C-n>" :
"\ <SID>check_back_space() ? "\<TAB>" :
"\ deoplete#mappings#manual_complete()
"function! s:check_back_space() abort "{{{
"let col = col('.') - 1
"return !col || getline('.')[col - 1]  =~ '\s'
"endfunction"}}}

"inoremap <silent> <C-CR> <C-r>=<SID>my_cr_function()<CR>
    "function! s:my_cr_function() abort
      "return deoplete#close_popup() . ""
      "endfunction
      "
"if &term =~ '^screen'
    " tmux will send xterm-style keys when its xterm-keys option is on
    "execute "set <xUp>=\e[1;*A"
    "execute "set <xDown>=\e[1;*B"
    "execute "set <xRight>=\e[1;*C"
    "execute "set <xLeft>=\e[1;*D"
"endif


" https://github.com/scrooloose/nerdtree 
" How can I open a NERDTree automatically when vim starts up if no files were specified?
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif