"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> Vim-Plug
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
call plug#begin('~/.config/nvim/plugged')

Plug 'jremmen/vim-ripgrep'
Plug 'stefandtw/quickfix-reflector.vim'
Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }
Plug 'buoto/gotests-vim'
Plug 'w0rp/ale'
Plug 'vim-scripts/DrawIt'
let $NVIM_TUI_ENABLE_TRUE_COLOR=1
" Rust settings
Plug 'rust-lang/rust.vim'

" Autocomplete
Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }

" LSP
Plug 'nvim-lua/lsp-status.nvim'
Plug 'neovim/nvim-lspconfig'
Plug 'nvim-lua/lsp_extensions.nvim'
Plug 'nvim-lua/completion-nvim'
" Diagnostics in QuickFix/LocList
Plug 'onsails/diaglist.nvim'

call plug#end()

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> General
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

" Sets how many lines of history VIM has to remember
set history=500

" Enable filetype plugins
filetype plugin on
"filetype indent on

" Set to auto read when a file is changed from the outside
set autoread
au FocusGained,BufEnter * checktime

" :Ws sudo saves the file
" (useful for handling the permission-denied error)
command! Ws execute 'w !sudo tee % > /dev/null' <bar> edit!

" Limit what can be done in the VIMRC
set secure

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> VIM user interface
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Set 7 lines to the cursor - when moving vertically using j/k
set so=7

" Avoid garbled characters in Chinese language windows OS
let $LANG='en'
set langmenu=en
source $VIMRUNTIME/delmenu.vim
source $VIMRUNTIME/menu.vim

" Turn on the Wild menu
set wildmenu

" Display wildmenu with specific options
set wildmode=list:longest,full


" Ignore compiled files
set wildignore=*.o,*~,*.pyc
if has("win16") || has("win32")
    set wildignore+=.git\*,.hg\*,.svn\*
else
    set wildignore+=*/.git/*,*/.hg/*,*/.svn/*,*/.DS_Store
endif

"Always show current position
set ruler

" Height of the command bar
set cmdheight=1

" A buffer becomes hidden when it is abandoned
set hid

" Configure backspace so it acts as it should act
set backspace=eol,start,indent
set whichwrap+=<,>,h,l

" Ignore case when searching
set ignorecase

" When searching try to be smart about cases
set smartcase

" Highlight search results
set hlsearch

" Makes search act like search in modern browsers
set incsearch

" Don't redraw while executing macros (good performance config)
set lazyredraw

" For regular expressions turn magic on
set magic

" Show matching brackets when text indicator is over them
set showmatch

" How many tenths of a second to blink when matching brackets
set mat=2

" No annoying sound on errors
set noerrorbells
set novisualbell
set t_vb=
set tm=500

" time waited for key press(es) to complete. It makes for a faster key response
set ttyfast
set ttimeout
set ttimeoutlen=50

" Properly disable sound on errors on MacVim
if has("gui_macvim")
    autocmd GUIEnter * set vb t_vb=
endif

" Add a bit extra margin to the left
set foldcolumn=1

" new splits will be at the bottom or to the right side of the screen
set splitbelow
set splitright

set showcmd " Show previous commands
set showmode " Display NORMAL/INSERT/VISUAL mode below statusline

set number " We like line numbers

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> Colors and Fonts
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Enable syntax highlighting
"syntax enable

" Disable syntax for now, but keep colors for the rest of the UI
syntax off

" Enable 256 colors palette in Gnome Terminal
if $COLORTERM == 'gnome-terminal'
    set t_Co=256
endif

try
    colorscheme peachpuff
catch
endtry

set background=light

" Set extra options when running in GUI mode
if has("gui_running")
    set guioptions-=T
    set guioptions-=e
    set t_Co=256
    set guitablabel=%M\ %t
endif

" Set utf8 as standard encoding and en_US as the standard language
set encoding=utf8

" Use Unix as the standard file type
set ffs=unix,dos,mac

set colorcolumn=250 "Disable formatting past 250 chars

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> Files, backups and undo
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Turn backup off, since most stuff is in SVN, git etc. anyway...
set nobackup
set nowb
set noswapfile
set shortmess+=I

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> Text, tab and indent related
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

" 1 tab == 4 spaces
set shiftwidth=4
set tabstop=4

" Linebreak on 500 characters
set lbr
set tw=500

set ai "Auto indent
set si "Smart indent
set wrap "Wrap lines

set shiftround " When shifting lines, round indentation to nearest shiftwidth


""""""""""""""""""""""""""""""
" -> Status line
""""""""""""""""""""""""""""""
" Always show the status line
set laststatus=2

" Statusline definition
set statusline=
set statusline+=%7*\[%n]                                  "buffernr
set statusline+=%1*\ %<%t\                                "File+path
set statusline+=%3*\ %y\                                  "FileType
set statusline+=%4*\ %{''.(&fenc!=''?&fenc:&enc).''}      "Encoding
set statusline+=%5*\ %{(&bomb?\",BOM\":\"\")}\            "Encoding2
set statusline+=%6*\ %{&ff}\                              "FileFormat (dos/unix..)
set statusline+=%7*\ %=\ row:%l/%L\ (%03p%%)\             "Rownumber/total (%)
set statusline+=%9*\ col:%03c\                            "Colnr
set statusline+=%0*\ %m%r%w\                             "Modified? Readonly? Top/bot.

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> Misc
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Remove the Windows ^M - when the encodings gets messed up
noremap <Leader>m mmHmt:%s/<C-V><cr>//ge<cr>'tzt'm

" Toggle paste mode on and off
map <leader>pp :setlocal paste!<cr>
set pastetoggle=<F2>

" Disable mouse automatic mode
set mouse-=a

" Enable line numbers toggle
noremap <leader>n :set invnumber<CR>

" jump to the last position when reopening a file
if has("autocmd")
  au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif
endif

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> Helper functions
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

" Trim whitespace at end of lines
nnoremap <leader>s :%s/\s\+$//e<CR>

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> General Code Settings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
let g:deoplete#enable_at_startup = 1

" Fix weird JSON quotation issue
let g:vim_json_syntax_conceal = 0

" Enable Ripgrep formatting for vim
let g:rg_command = 'rg --vimgrep -S'

" Code folding
set foldmethod=syntax
set foldlevel=1
set foldnestmax=1

" -- Text wrap and expand spaces for yaml, css, js, etc
if has("autocmd")
	" Syntax of these languages is fussy over tabs Vs spaces
	autocmd FileType make setlocal ts=8 sts=8 sw=8 noexpandtab
	autocmd FileType yaml setlocal ts=2 sts=2 sw=2 expandtab

	" Customisations based on house-style (arbitrary)
	autocmd FileType html setlocal ts=2 sts=2 sw=2 expandtab
	autocmd FileType css setlocal ts=2 sts=2 sw=2 expandtab
	autocmd FileType javascript setlocal ts=4 sts=4 sw=4 noexpandtab

	" Treat .rss files as XML
	autocmd BufNewFile,BufRead *.rss setfiletype xml
endif

" Persistent Undo
if has('persistent_undo')
    set undolevels=5000
    set undodir=$HOME/.vim_undofiles
    set undofile
endif

" Put LSP stuff in the quickfix window
"lua vim.diagnostic.setqflist()

" Enable diagnostic list in qfix/loclist
lua << EOF
 require("diaglist").init({
    -- optional settings
    -- below are defaults

    -- increase for noisy servers
    debounce_ms = 50,

    -- list in quickfix only diagnostics from clients
    -- attached to a current buffer
    -- if false, all buffers' clients diagnostics is collected
    buf_clients_only = true,
})
EOF

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> ALE Settings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
let g:LanguageClient_serverCommands = {
    \ 'rust': ['rust-analyzer'],
    \ }
let g:ale_linters = {'rust': ['rust-analyzer']}
let g:ale_markdown_markdownlint_options = "--config ~/.mdlrc"

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> Golang Settings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

let g:go_def_mode='gopls'
let g:go_info_mode='gopls'
let g:go_gopls_gofumpt=1
let g:go_metalinter_command = 'golangci-lint'
let g:go_fmt_command="gopls"

" By default syntax-highlighting for Functions, Methods and Structs is disabled
let g:go_highlight_build_constraints = 1
let g:go_highlight_fields = 1
let g:go_highlight_functions = 1
let g:go_highlight_interfaces = 1
let g:go_highlight_methods = 1
let g:go_highlight_operators = 1
let g:go_highlight_structs = 1

" Auto-space Go files
autocmd BufNewFile,BufRead *.go setlocal noexpandtab tabstop=4 shiftwidth=4

" vim-go mappings
au FileType go nmap <leader>b <Plug>(go-build)
au FileType go nmap <leader>c <Plug>(go-coverage)
"au FileType go nmap <leader>r <Plug>(go-run)
au FileType go nmap <leader>t <Plug>(go-test)
au FileType go nmap <leader>d <Plug>(go-def)

" Go implements (interfaces under cursor)
"au FileType go nmap <Leader>s <Plug>(go-implements)

" Go show type info under cursor
au FileType go nmap <Leader>i <Plug>(go-info)

" Go rename
"au FileType go nmap <Leader>e <Plug>(go-rename)

" Go vet
au FileType go nmap <Leader>v <Plug>(go-vet)

" Godoc under cursor
au FileType go nmap <Leader>k <Plug>(go-doc)

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" -> Rust Settings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

let g:rustfmt_autosave = 1

if has('nvim')
	" Rust LSP support for rust-analyzer
    lua << EOF
    local nvim_lsp = require'lspconfig'

    local on_attach = function(client)
        require'completion'.on_attach(client)
    end

    -- Auto-imports
    nvim_lsp.rust_analyzer.setup({
        on_attach=on_attach,
        settings = {
            ["rust-analyzer"] = {
                assist = {
                    importGranularity = "module",
                    importPrefix = "by_self",
                },
                cargo = {
                    loadOutDirsFromCheck = true
                },
                procMacro = {
                    enable = true
                },
            }
        }
    })

    -- Enable diagnostics
    vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
      vim.lsp.diagnostic.on_publish_diagnostics, {
        virtual_text = true,
        signs = true,
        update_in_insert = true,
      }
    )
EOF

endif

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""