-- Highlight search results
vim.o.hlsearch = true

-- Enable line numbers
vim.o.number = true
vim.o.relativenumber = true

-- Enable mouse mode
vim.o.mouse = 'a'

-- Indentation
vim.o.tabstop = 4
vim.o.expandtab = true
vim.o.shiftwidth = 4
vim.o.autoindent = true
vim.o.smartindent = true
vim.o.smarttab = true
vim.o.breakindent = true
vim.o.softtabstop = 4

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

-- Case-insensitive searching
vim.o.ignorecase = true
vim.o.smartcase = true

-- Keep signcolumn on by default
vim.wo.signcolumn = 'yes'

-- Decrease update time
vim.o.updatetime = 250
vim.o.timeoutlen = 300

vim.o.splitbelow = true
vim.o.splitright = true

vim.diagnostic.config({
    virtual_text = true,
    signs = true,
    virtual_lines = false,
    update_in_insert = true,
    float = {
        source = 'if_many',
        format = function(d)
            return ("[%d:%d] %s"):format(
                d.lnum + 1,
                d.end_col + 1,
                d.message
            )
        end,
    }
})

-- fold related stuff
vim.o.foldcolumn = '0'
vim.o.foldlevel = 99
vim.o.foldlevelstart = 99
vim.o.foldenable = true

-- spelling
vim.o.spelllang = 'en,ru'