local opt = vim.opt
local g = vim.g
g.maplocalleader = ";"

opt.foldmethod = "indent"
opt.foldnestmax = 10
opt.foldlevel = 4
opt.signcolumn = "yes"
opt.spelllang = "en,de"
opt.clipboard = "" -- don't just use the system clipboard
opt.wrap = false
opt.breakindent = false
opt.spell = true
opt.list = true
opt.conceallevel = 2
opt.undofile = true
opt.undolevels = 10000
opt.writebackup = false
opt.history = 5000
opt.shada = { "'1000", "<50", "s10", "h" }

-- Tabs and Indents
-- ===

opt.textwidth = 80     -- Text width maximum chars before wrapping
opt.tabstop = 4        -- The number of spaces a tab is
opt.shiftwidth = 4     -- Number of spaces to use in auto(indent)
opt.smarttab = true    -- Tab insert blanks according to 'shiftwidth'
opt.autoindent = true  -- Use same indenting on new lines
opt.smartindent = true -- Smart autoindenting on new lines
opt.shiftround = true  -- Round indent to multiple of 'shiftwidth'

-- Timing
-- ===
opt.ttimeout = true
opt.timeoutlen = 500  -- Time out on mappings
opt.ttimeoutlen = 10  -- Time out on key codes
opt.updatetime = 500  -- Idle time to write swap and trigger CursorHold

-- Searching
-- ===
opt.ignorecase = true -- Search ignoring case
opt.smartcase = true  -- Keep case when searching with *
opt.infercase = true  -- Adjust case in insert completion mode
opt.incsearch = true  -- Incremental search

-- Formatting
-- ===

opt.wrap = false                                  -- No wrap by default
opt.linebreak = true                              -- Break long lines at 'breakat'
opt.breakat = '\\ \\	;:,!?'                    -- Long lines break chars
opt.startofline = false                           -- Cursor in same column for few commands
opt.splitbelow = true                             -- Splits open bottom right
opt.splitright = true
opt.breakindentopt = { shift = 2, min = 20 }
opt.formatoptions = "cqanlmBjp"                   -- see :h fo-table & :h formatoptions

-- Diff
-- ===

opt.diffopt:append({ 'iwhite', 'indent-heuristic', 'algorithm:patience' })
opt.wildmode = 'longest:full,full' -- Command-line completion mode

-- Editor UI
-- ===

opt.termguicolors = true
opt.shortmess = "xsTOInfFitloCaAs"
opt.showmode = true    	-- Show mode in cmd window
opt.scrolloff = 2       -- Keep at least n lines above/below
opt.sidescrolloff = 0   -- Keep at least n lines left/right
opt.numberwidth = 2     -- Minimum number of columns to use for the line number
opt.number = true      	-- Show line numbers
opt.ruler = false       -- Default status ruler
opt.list = true         -- Show hidden characters

if vim.g.started_by_firenvim == false then
	opt.showtabline = 3 -- Always show the tabs line
	opt.laststatus = 3 	-- Always show laststatus
else
	opt.showtabline = 1 -- Don't show tabline in firenvim, unless multitab
	opt.laststatus = 3 	-- Don't show laststatus in firenvim
end
opt.helpheight = 0      -- Disable help window resizing
opt.winwidth = 30       -- Minimum width for active window
opt.winminwidth = 1     -- Minimum width for inactive windows
opt.winheight = 1       -- Minimum height for active window
opt.winminheight = 1    -- Minimum height for inactive window

opt.showcmd = false     -- show command in status line
opt.cmdheight = 0
opt.cmdwinheight = 5    -- Command-line lines
opt.equalalways = true  -- Resize windows on split or close
opt.colorcolumn = '+0'  -- Column highlight at textwidth's max character-limit

opt.cursorline = true
opt.cursorlineopt = { 'number', 'screenline' }

opt.pumheight = 10      -- Maximum number of items to show in the popup menu
opt.pumwidth = 10       -- Minimum width for the popup menu
opt.pumblend = 10       -- Popup blend


-- autocommands 
-- ===
local function augroup(name)
  return vim.api.nvim_create_augroup("plex_" .. name, {})
end

-- highlight on yank
vim.api.nvim_create_autocmd("TextYankPost", {
  group = augroup "highlight_yank",
  callback = function()
    vim.highlight.on_yank()
  end,
})

-- Disable conceallevel for specific file-types.
vim.api.nvim_create_autocmd('FileType', {
	group = augroup('fix_conceallevel'),
	pattern = { 'latex', 'tex' },
	callback = function()
		vim.opt_local.conceallevel = 0
	end,
})

-- Resize splits if window got resized
vim.api.nvim_create_autocmd('VimResized', {
	group = augroup('resize_splits'),
	callback = function()
		vim.cmd('wincmd =')
	end,
})