-- space as a leader key
vim.g.mapleader = " "

-- flush buffer on focus change
vim.g.autowrite = "on"

-- Set to true if you have a Nerd Font installed and selected in the terminal
vim.g.have_nerd_font = true

vim.opt.completeopt = { "popup", "menu", "menuone", "noselect" }
vim.opt.mouse = "a" -- allow the mouse to be used in Nvim

-- Tab
vim.opt.tabstop = 2 -- number of visual spaces per TAB
vim.opt.softtabstop = 2 -- number of spaces in tab when editing
vim.opt.shiftwidth = 2 -- insert 4 spaces on a tab
vim.opt.expandtab = true -- tabs are spaces, mainly because of python

-- UI config
vim.opt.number = false -- show absolute number
vim.opt.relativenumber = false -- add numbers to each line on the left side
vim.opt.cursorline = true -- highlight cursor line underneath the cursor horizontally
vim.opt.splitbelow = true -- open new vertical split bottom
vim.opt.splitright = true -- open new horizontal splits right
vim.opt.termguicolors = true -- enabl 24-bit RGB color in the TUI
vim.opt.showmode = false -- we are experienced, wo don't need the "-- INSERT --" mode hint
vim.opt.wrap = false
-- Sets how neovim will display certain whitespace characters in the editor.
--  See `:help 'list'`
--  and `:help 'listchars'`
vim.opt.list = true
vim.opt.listchars = { tab = "» ", trail = "·", nbsp = "␣" }
-- Enable break indent
-- Every wrapped line will continue visually indented (same amount of
-- space as the beginning of that line), thus preserving horizontal blocks
-- of text.
vim.opt.breakindent = true
-- Preview substitutions live, as you type!
vim.opt.inccommand = "split"

-- Searching
vim.opt.incsearch = true -- search as characters are entered
vim.opt.hlsearch = false -- do not highlight matches
vim.opt.ignorecase = true -- ignore case in searches by default
vim.opt.smartcase = true -- but make it case sensitive if an uppercase is entered

vim.g.clipboard = "wl-copy"
vim.opt.clipboard:append("unnamedplus")

-- Save undo history
vim.opt.undofile = true

-- Off signcolumn on by default
vim.opt.signcolumn = "no"

-- Decrease update time
vim.opt.updatetime = 250

-- Decrease mapped sequence wait time
-- Displays which-key popup sooner
vim.opt.timeoutlen = 300

-- Minimal number of screen lines to keep above and below the cursor.
vim.opt.scrolloff = 10

-- folds
vim.opt.foldcolumn = "0"
vim.opt.foldmethod = "expr"
vim.opt.foldexpr = "v:lua.vim.treesitter.foldexpr()"
vim.opt.foldtext = ""

-- vim.opt.foldnestmax = 3
vim.opt.foldlevel = 99
vim.opt.foldlevelstart = 99

vim.opt.splitright = true
vim.opt.splitbelow = true

vim.opt.cmdheight = 0

-- do not unload closed buffer from jumplist
vim.opt.jumpoptions = ""

vim.diagnostic.config({ virtual_text = true, underline = true })

vim.opt.sessionoptions = "blank,buffers,curdir,folds,help,tabpages,winsize,winpos,terminal,localoptions"

vim.cmd.packadd("cfilter")