let mapleader=" "

set mouse=a
set number
set relativenumber
set autoindent
set smarttab
set ignorecase
set smartcase
set termguicolors
syntax on

" Autocompletion
set wildmode=longest,list,full

" Fix splitting
set splitbelow splitright

"Tab settings
set expandtab
set shiftwidth=4
set softtabstop=4
set tabstop=4

set clipboard+=unnamedplus


call plug#begin()

Plug 'andweeb/presence.nvim'
Plug 'ap/vim-css-color'
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'hrsh7th/nvim-cmp'
Plug 'jiangmiao/auto-pairs'
Plug 'kyazdani42/nvim-web-devicons'
Plug 'L3MON4D3/LuaSnip'
Plug 'lewis6991/gitsigns.nvim'
Plug 'lukas-reineke/indent-blankline.nvim'
Plug 'mattn/emmet-vim'
Plug 'Mofiqul/dracula.nvim'
Plug 'neovim/nvim-lspconfig'
Plug 'norcalli/nvim-colorizer.lua'
Plug 'numToStr/Comment.nvim'
Plug 'nvim-lualine/lualine.nvim'
Plug 'nvim-lua/plenary.nvim'
Plug 'nvim-telescope/telescope.nvim'
Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}
Plug 'preservim/nerdtree'
Plug 'rafi/awesome-vim-colorschemes'
Plug 'ryanoasis/vim-devicons'
Plug 'saadparwaiz1/cmp_luasnip'
Plug 'tomasiser/vim-code-dark'
Plug 'vimwiki/vimwiki'

call plug#end()

colorscheme dracula

set cursorline
set cursorcolumn
highlight CursorLine ctermbg=Yellow cterm=bold guibg=#2b2b2b
highlight CursorColumn ctermbg=Yellow cterm=bold guibg=#2b2b2b

nnoremap <C-t> :NERDTreeToggle<CR>

" Verticaly center document when entering insert mode
autocmd InsertEnter * norm zz

" Remove trailing whitespace on save
autocmd BufWritePre * %s/\s\+$//e

" Enable Disable auto comment
map <leader>c :setlocal formatoptions-=cro<CR>
map <leader>C :setlocal formatoptions=cro<CR>

" Enable spell checking, s for spell check
map <leader>s :setlocal spell! spelllang=en_us<CR>

" Enable Disable auto indent
map <leader>i :setlocal autoindent<Cr>
map <leader>I :setlocal noautoindent<Cr>

" Shortcutting split navigation
map <C-h> <C-w>h
map <C-j> <C-w>j
map <C-k> <C-w>k
map <C-l> <C-w>l

" Moving line up or down by one line
nmap <a-k> :m -2<CR>
nmap <a-up> :m -2<CR>
nmap <a-j> :m +1<CR>
nmap <a-down> :m +1<CR>

" Alias replace all to S
nnoremap S :%s//gI<Left><Left><Left>


lua << END
require('Comment').setup()
require('lualine').setup {
	options = {
		icons_enabled = true,
		theme = 'dracula',
		component_separators = { left = '', right = ''},
		section_separators = { left = '', right = ''},
		disabled_filetypes = {},
		always_divide_middle = true,
		globalstatus = false,
	},
	sections = {
		lualine_a = {'mode'},
		lualine_b = {'branch', 'diff', 'diagnostics'},
		lualine_c = {'filename'},
		lualine_x = {'encoding', 'fileformat', 'filetype'},
		lualine_y = {'progress'},
		lualine_z = {'location'}
	},
	inactive_sections = {
		lualine_a = {},
		lualine_b = {},
		lualine_c = {'filename'},
		lualine_x = {'location'},
		lualine_y = {},
		lualine_z = {}
	},
	tabline = {},
	extensions = {}
}
END

lua << EOF
-- Set completeopt to have a better completion experience
vim.o.completeopt = 'menuone,noselect'

-- luasnip setup
local luasnip = require 'luasnip'

-- nvim-cmp setup
local cmp = require 'cmp'
cmp.setup {
	completion = {
		autocomplete = false
	},
	snippet = {
		expand = function(args)
			require('luasnip').lsp_expand(args.body)
		end,
	},
	mapping = {
		['<TAB>'] = cmp.mapping.select_prev_item(),
		['<S_TAB>'] = cmp.mapping.select_next_item(),
		['<C-d>'] = cmp.mapping.scroll_docs(-4),
		['<C-f>'] = cmp.mapping.scroll_docs(4),
		['<C-Space>'] = cmp.mapping.complete(),
		['<C-e>'] = cmp.mapping.close(),
		['<CR>'] = cmp.mapping.confirm {
			behavior = cmp.ConfirmBehavior.Replace,
			select = true,
		},
		['<Tab>'] = function(fallback)
			if vim.fn.pumvisible() == 1 then
				vim.fn.feedkeys(vim.api.nvim_replace_termcodes('<C-n>', true, true, true), 'n')
			elseif luasnip.expand_or_jumpable() then
				vim.fn.feedkeys(vim.api.nvim_replace_termcodes('<Plug>luasnip-expand-or-jump', true, true, true), '')
			else
				fallback()
			end
		end,
		['<S-Tab>'] = function(fallback)
			if vim.fn.pumvisible() == 1 then
				vim.fn.feedkeys(vim.api.nvim_replace_termcodes('<C-p>', true, true, true), 'n')
			elseif luasnip.jumpable(-1) then
				vim.fn.feedkeys(vim.api.nvim_replace_termcodes('<Plug>luasnip-jump-prev', true, true, true), '')
			else
				fallback()
			end
		end,
	},
	sources = {
		{ name = 'nvim_lsp' },
		{ name = 'luasnip' },
	},
}
EOF




lua << EOF
local nvim_lsp = require('lspconfig')

-- Use an on_attach function to only map the following keys
-- after the language server attaches to the current buffer
local on_attach = function(client, bufnr)

	local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
	local function buf_set_option(...) vim.api.nvim_buf_set_option(bufnr, ...) end

	-- Enable completion triggered by <c-x><c-o>
	buf_set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')

	-- Mappings.
	local opts = { noremap=true, silent=true }

	-- See `:help vim.lsp.*` for documentation on any of the below functions
	buf_set_keymap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
	buf_set_keymap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
	buf_set_keymap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
	buf_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
	buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
	buf_set_keymap('n', '<space>wa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
	buf_set_keymap('n', '<space>wr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
	buf_set_keymap('n', '<space>wl', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)
	buf_set_keymap('n', '<space>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
	buf_set_keymap('n', '<space>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
	buf_set_keymap('n', '<space>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
	buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
	buf_set_keymap('n', '<space>e', '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>', opts)
	buf_set_keymap('n', '[d', '<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>', opts)
	buf_set_keymap('n', ']d', '<cmd>lua vim.lsp.diagnostic.goto_next()<CR>', opts)
	buf_set_keymap('n', '<space>q', '<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>', opts)
	buf_set_keymap('n', '<space>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)

end

-- Use a loop to conveniently call 'setup' on multiple servers and
-- map buffer local keybindings when the language server attaches
local servers = { 'pyright', 'rust_analyzer' }
for _, lsp in ipairs(servers) do
	nvim_lsp[lsp].setup {
		on_attach = on_attach,
		flags = {
			debounce_text_changes = 150,
		}
	}
end
EOF



" Delete buffer while keeping window layout (don't close buffer's windows).
" Version 2008-11-18 from http://vim.wikia.com/wiki/VimTip165
if v:version < 700 || exists('loaded_bclose') || &cp
	finish
endif
let loaded_bclose = 1
if !exists('bclose_multiple')
	let bclose_multiple = 1
endif

" Display an error message.
function! s:Warn(msg)
	echohl ErrorMsg
	echomsg a:msg
	echohl NONE
endfunction

" Command ':Bclose' executes ':bd' to delete buffer in current window.
" The window will show the alternate buffer (Ctrl-^) if it exists,
" or the previous buffer (:bp), or a blank buffer if no previous.
" Command ':Bclose!' is the same, but executes ':bd!' (discard changes).
" An optional argument can specify which buffer to close (name or number).
function! s:Bclose(bang, buffer)
	if empty(a:buffer)
		let btarget = bufnr('%')
	elseif a:buffer =~ '^\d\+$'
		let btarget = bufnr(str2nr(a:buffer))
	else
		let btarget = bufnr(a:buffer)
	endif
	if btarget < 0
		call s:Warn('No matching buffer for '.a:buffer)
		return
	endif
	if empty(a:bang) && getbufvar(btarget, '&modified')
		call s:Warn('No write since last change for buffer '.btarget.' (use :Bclose!)')
		return
	endif
	" Numbers of windows that view target buffer which we will delete.
	let wnums = filter(range(1, winnr('$')), 'winbufnr(v:val) == btarget')
	if !g:bclose_multiple && len(wnums) > 1
		call s:Warn('Buffer is in multiple windows (use ":let bclose_multiple=1")')
		return
	endif
	let wcurrent = winnr()
	for w in wnums
		execute w.'wincmd w'
		let prevbuf = bufnr('#')
		if prevbuf > 0 && buflisted(prevbuf) && prevbuf != btarget
			buffer #
		else
			bprevious
		endif
		if btarget == bufnr('%')
			" Numbers of listed buffers which are not the target to be deleted.
			let blisted = filter(range(1, bufnr('$')), 'buflisted(v:val) && v:val != btarget')
			" Listed, not target, and not displayed.
			let bhidden = filter(copy(blisted), 'bufwinnr(v:val) < 0')
			" Take the first buffer, if any (could be more intelligent).
			let bjump = (bhidden + blisted + [-1])[0]
			if bjump > 0
				execute 'buffer '.bjump
			else
				execute 'enew'.a:bang
			endif
		endif
	endfor
	execute 'bdelete'.a:bang.' '.btarget
	execute wcurrent.'wincmd w'
endfunction
command! -bang -complete=buffer -nargs=? Bclose call <SID>Bclose(<q-bang>, <q-args>)
nnoremap <silent> <Leader>bd :Bclose<CR>


map gn :bn<cr>
map gp :bp<cr>
map gw :Bclose<cr>

" run current script with python3 by CTRL+R in command and insert mode
autocmd FileType python map <buffer> <C-r> :w<CR>:exec '!python3' shellescape(@%, 1)<CR>
autocmd FileType python imap <buffer> <C-r> <esc>:w<CR>:exec '!python3' shellescape(@%, 1)<CR>