local cmd = vim.cmd
local opt = vim.opt
local g = vim.g
local s = vim.s
local indent = 4

g.mapleader = " "

cmd([[
	filetype plugin indent on
]])

opt.backspace = { "eol", "start", "indent" } -- allow backspacing over everything in insert mode
-- opt.clipboard = "unnamedplus"                -- allow neovim to access the system clipboard
vim.opt.fileencoding = "utf-8"
opt.encoding = "utf-8"
opt.matchpairs = { "(:)", "{:}", "[:]", "<:>" }
opt.syntax = "enable"

-- indention
opt.autoindent = true
opt.expandtab = true
opt.shiftwidth = indent
opt.smartindent = true
opt.softtabstop = indent
opt.tabstop = indent
opt.shiftround = true

-- search
opt.hlsearch = true
opt.ignorecase = true
opt.smartcase = true
opt.wildignore = opt.wildignore + { "*/node_modules/*", "*/.git/*", "*/vendor/*" }
opt.wildmenu = true

-- ui
opt.cursorline = true
opt.laststatus = 2
opt.lazyredraw = true
opt.list = true
opt.listchars = {
	tab = "┊ ",
	trail = "·",
	extends = "»",
	precedes = "«",
	nbsp = "×",
}

-- Hide cmd line
opt.cmdheight = 0

opt.mouse = "a"
opt.number = true
opt.relativenumber = true
opt.scrolloff = 18
opt.sidescrolloff = 3
opt.signcolumn = "yes"
opt.splitbelow = true
opt.splitright = true
opt.wrap = false

-- backups
opt.backup = false -- create a backup file
opt.swapfile = false -- creates a swapfile
opt.writebackup = false -- if a file is being edited by another program (or was written to file while editing with another program), it is not allowed to be edited

-- autocomplete
opt.completeopt = { "menu", "menuone", "noselect" } -- mostly just for cmp
opt.shortmess = opt.shortmess + {
	c = true,
} -- hide all the completion messages, e.g. "-- XXX completion (YYY)", "match 1 of 2", "The only match", "Pattern not found"

opt.showmode = false

-- perfomance
-- remember N lines in history
opt.history = 100 -- keep 100 lines of history
opt.redrawtime = 1500
opt.timeoutlen = 250 -- time to wait for a mapped sequence to complete (in milliseconds)
opt.ttimeoutlen = 10
opt.updatetime = 100 -- signify default updatetime 4000ms is not good for async update

-- theme
opt.termguicolors = true -- enable 24-bit RGB colors

-- persistent undo
-- Don"t forget to create folder $HOME/.local/share/nvim/undo
local undodir = vim.fn.stdpath("data") .. "/undo"
opt.undofile = true -- enable persistent undo
opt.undodir = undodir
opt.undolevels = 1000
opt.undoreload = 10000

-- fold
opt.foldmethod = "marker"
opt.foldlevel = 99

-- Disable builtin plugins
local disabled_built_ins = {
	"2html_plugin",
	"getscript",
	"getscriptPlugin",
	"gzip",
	"logipat",
	"netrw",
	"netrwPlugin",
	"netrwSettings",
	"netrwFileHandlers",
	"matchit",
	"rrhelper",
	"spellfile_plugin",
	"vimball",
	"vimballPlugin",
	"tutor",
	"rplugin",
	"synmenu",
	"optwin",
	"compiler",
	"bugreport",
	"ftplugin",
}

for _, plugin in pairs(disabled_built_ins) do
	g["loaded_" .. plugin] = 1
end