-- Defining alias for vim.opt.
local opt = vim.opt

-- Alias for vim.g
local g = vim.g

-- Number settings.
opt.number = true
opt.numberwidth = 2
opt.relativenumber = true

-- Set scroll offset.
opt.scrolloff = 3

-- Remove showing mode.
opt.showmode = false

-- True color support.
opt.termguicolors = true

-- Enable clipboard.
opt.clipboard = "unnamedplus"

-- Enable mouse in all modes.
opt.mouse = "a"

-- Enable cursor line.
opt.cursorline = true

-- Setting colorcolumn. This is set because of
-- this (https://github.com/lukas-reineke/indent-blankline.nvim/issues/59)
-- indent-blankline bug.
opt.colorcolumn = "9999"

-- With set hidden you’re telling Neovim that you can
-- have unsaved worked that’s not displayed on your screen.
opt.hidden = true

-- Set indentation stuf.
opt.tabstop = 4
opt.shiftwidth = 4
opt.smartindent = true
opt.smartcase = true
opt.expandtab = true
opt.smarttab = true

-- Set searching stuf.
opt.hlsearch = true
opt.incsearch = true
opt.ignorecase = true

-- Set terminal bidirectual.
-- For writing in right to left languages like arabic, persian and hebrew.
opt.termbidi = true

-- Without this option some times backspace did not work correctly.
opt.backspace = "indent,eol,start"

-- For opening splits on right or bottom.
opt.splitbelow = true
opt.splitright = true

-- Enabling ruler and statusline.
opt.ruler = true

-- Setting time that Neovim wait after each keystroke.
opt.ttimeoutlen = 20
opt.timeoutlen = 1000

-- Setting up autocomplete menu.
opt.completeopt = "menuone,noselect"

-- Enable persistent undo
vim.opt.undofile = true

-- Set tokynonight transparency variable
vim.g.tokyonight_transparent = true

-- Add cursorline and diasable it in terminal
vim.cmd("autocmd WinEnter,BufEnter * if &ft is \"toggleterm\" | set nocursorline | else | set cursorline | endif")

-- Configure Better Folding
opt.foldmethod="expr"
opt.foldexpr="nvim_treesitter#foldexpr()"
opt.foldtext="getline(v:foldstart).'...'.trim(getline(v:foldend))"
opt.foldnestmax=3
opt.foldminlines=1

-- Set line number for help files.
vim.cmd
[[
augroup help_config
  autocmd!
  autocmd FileType help :set number
augroup END
]]

-- Auto open nvim-tree when writing (nvim .) in command line
-- and auto open Dashboard when nothing given as argument.
vim.cmd
[[
if index(argv(), ".") >= 0
  autocmd VimEnter * NvimTreeToggle
  bd1
elseif len(argv()) == 0
  autocmd VimEnter * Dashboard
endif
]]

vim.cmd("autocmd BufWritePost plugins.lua source <afile>")