" The general ideas behind these mappings:
"
" * Leader prefix is the generally preferred way to map new things, however
"   only for those that affect all of vim
"
" * Localleader prefix is used for mappings which only affect single buffers,
"   in other words mostly filetype specific mappings
"
" many of these mapping ideas come from Tom Ryder who has them nicely
" documented

" backspace to switch to alternate (last) buffer
nnoremap <BS> <C-^>

" set our leader key to space since with hjkl, space is largely useless
let mapleader = "\<Space>"
" maps the leader for buffer local mappings (e.g. vim-waikiki for files under
" the root dir to the same key -- might lead to incompatibilities, will have
" to test)
let maplocalleader = "\<Space>"
" set jk to escape, in case capslock is not mapped to escape on the system
inoremap jk <ESC>

" remove search highlights by pressing space+/ - the key for searching the
" first place
nnoremap <leader>/ :noh<cr>

" split buffers vertically/horizontally with the leader \ or - (mirrors my
" tmux setup)
nnoremap <leader>- :sp<cr>
nnoremap <leader>\ :vsp<cr>

" move around between matching brackets with tab
nnoremap <tab> %
nnoremap <tab> %

" Spell check set to <leader>O, 'o' for 'orthography':
noremap <leader>O :setlocal spell! spelllang=en_us<CR>
noremap <leader>OE :setlocal spell! spelllang=en_us<CR>
noremap <leader>OG :setlocal spell! spelllang=de_de<CR>
noremap <leader>o z=

" select the whole buffer with <leader>-a
nnoremap <leader>a ggVG

" quickly edit vimrc with leader+V
nnoremap <leader>V :vsp $MYVIMRC<cr>
" automatically source the vimrc file whenever it is saved (causes slowdown
" when done in MANY successions)
" au BufWritePost init.vim so ~/.config/nvim/init.vim
" source vimrc with keystroke combination
nnoremap <leader>VV :source $MYVIMRC<cr>

" since u undoes, would it not make sense that U redoes?
nnoremap U <C-r>

" when in insertion mode, C-u uppercases the current word, C-l lowercases it,
inoremap <C-u> <esc>gUiw`]a
inoremap <C-l> <esc>guiw`]a

" get rid of the help message popping up when I miss esc and hit F1
nnoremap <F1> <ESC>
inoremap <F1> <ESC>
vnoremap <F1> <ESC>

" yank filename to f buffer
nnoremap yf :let @f = expand("%")<cr>

" remove all trailing whitespaces
" on pressing space+W
nnoremap <leader>W :%s/\s\+$//<cr>:let @/=''<CR>
" automatically on saving
" autocmd BufWritePre * :%s/\s\+$//e

" 'open new buffer' with leader-t (opens new buffer and switches to it)
" open actual new tab with leader-T
nnoremap <leader>t :vsp .<cr>
nnoremap <leader>T :tabedit .<cr>

" open/close NERDtree with leader-e
" whatever method tree has been opened by, leader-e closes it again
nnoremap <leader>e :NERDTreeToggle<CR>
" open root of current VCS project in tree
nnoremap <leader><C-e> :NERDTreeVCS<CR>
" open current nerdtree with current file highlighted
nnoremap <leader>E :NERDTreeFind<CR>

" vim-go mappings - will only activate in go files
" most of this credit to https://hackernoon.com/my-neovim-setup-for-go-7f7b6e805876
" switch between test file and function
au Filetype go nnoremap <leader>ga <Plug>(go-alternate-edit)
" switch between test file and function - in a horizontal/vertical split
au Filetype go nnoremap <leader>gah <Plug>(go-alternate-split)
au Filetype go nnoremap <leader>gav <Plug>(go-alternate-vertical)
" run a test (but run it as short version, in case tests are tagged
" accordingly)
au FileType go nnoremap <F10> :GoTest -short<cr>
" show/hide code coverage of go file
au FileType go nnoremap <F9> :GoCoverageToggle -short<cr>
" To get the documentation of whatever you are hovering over press K (to go
" back C-t) -- this is enabled by default and needs no bind
" go to the definition of whatever you hover over
au FileType go nnoremap <F12> <Plug>(go-def)

" Configure notational-fzf-vim
let g:nv_search_paths = [ g:wiki_root ]
let g:nv_wrap_preview_text=1
" Dictionary with string keys and values. Must be in the form 'ctrl-KEY':
" 'command' or 'alt-KEY' : 'command'. See examples below.
let g:nv_fzf_binds = [
      \ 'alt-a:select-all',
      \ 'alt-q:deselect-all',
      \ 'alt-p:toggle-preview',
      \ 'alt-u:page-up',
      \ 'alt-d:page-down',
      \ 'ctrl-w:backward-kill-word',
      \ ]


" Markdown & Pandoc compilation group
" the commented out command can be used if vim-rmarkdown plugin is not
" installed (it is a bit more brittle)
" autocmd FileType rmd noremap <F10> :!echo<space>"require(rmarkdown);<space>render('<c-r>%')"<space>\|<space>R<space>--vanilla<enter>
" Compile with rmarkdown
" autocmd FileType markdown,rmarkdown noremap <leader>c :RMarkdown pdf<cr>
" autocmd FileType markdown,rmarkdown noremap <leader>C :RMarkdown! pdf<cr>

function! SearchWiki()
  let l:curpath=getcwd()
  :execute(":cd " . g:wiki_root)
  let l:texttofind=input("Search in Notes: ")
  :execute(":CtrlSF " . l:texttofind)
  :CtrlSFFocus
  :execute(":cd " . l:curpath)
endfunction

" search in wiki with ctrlsf, in fullscreen window
nnoremap <leader>wf :execute(":call SearchWiki()")<cr>

" FUZZY FINDING
" FZF buffers and files in current workdir
noremap <leader>s :FzfBuffers<cr>
" FZF most recently used / MRU, bound to S since it is essentially a larger
" go-back intention than just buffers
noremap <leader>S :FzfHistory<cr>
noremap <leader>f :FzfFiles<cr>

" use wiki.vim to look through document outlines in fzf (only for note
" directory atm)
nnoremap <leader>l :WikiFzfToc<cr>

" FZF general full-text search in cwd with rg
noremap <leader>F :FzfRg<cr>
" FZF note full-text search with notational-velocity like functions (in wiki
" directory)
noremap <leader>n :NV<cr>
noremap <leader>N :NV!<cr>

" FZF git diff
noremap <leader>gd :FzfGFiles?<cr>

" FZF colorschemes
nnoremap <leader><F8> :FzfColors<cr>
" Toggle background light/dark
call togglebg#map("<F8>")

" Mostly dealing with Prose writing from here on out
" Format current Paragraph (esp useful in prose writing)
nnoremap <silent> <leader>q gqap
xnoremap <silent> <leader>q gq
nnoremap <silent> <leader>Q vapJgqap

" Enter distraction free prose mode with F11
noremap <F11> :Goyo<CR>

" surround stuff with quotes, from normal or visual mode
nnoremap <leader>" viw<esc>a"<esc>bi"<esc>lel
vnoremap <leader>" <esc>`<i"<esc>`>la"<esc>l

" stronger versions of left,right - move all the way
nnoremap H ^
nnoremap L $