--<misc section>
vim.bo.modeline = false --disable modeline
vim.wo.number = false --???
vim.wo.wrap = true --enable *visual* auto-wrapping
vim.opt.autoindent = false --copy indent from current line when starting a new one
vim.opt.wildmode = 'longest,list,full'
vim.opt.smartindent = true --do smart autoindenting when starting a new line
vim.opt.hlsearch = true --highlight search
vim.opt.incsearch = true --incremental search
vim.opt.ignorecase = true --ignore case for search
vim.opt.smartcase = true --consider case if search pattern contains uppercase
vim.opt.laststatus = 0 --last window will have a status line: 0: never
vim.opt.ruler = true --show "line, column number" of cursor position
vim.opt.termguicolors = true --enables 24-bit RGB color in the |TUI|
vim.opt.cursorline = false --highlight the text line of the cursor
vim.opt.cursorcolumn = false --highlight the screen column of the cursor
vim.opt.shortmess = 'atF' --helps to avoid |hit-enter| prompts
vim.opt.encoding = 'utf-8'
vim.opt.path:append('~/.config/nvim/lua/')
vim.opt.suffixesadd = '.lua' --used when searching for a file w/ gf [I etc
vim.opt.fileencoding = 'utf-8'
vim.opt.expandtab = true --replace Tab with spaces
vim.opt.tabstop = 2 --replace Tab with spaces
vim.opt.shiftwidth = 2 --replace Tab with spaces
vim.opt.splitbelow = true --default split behavior for new windows
vim.opt.splitright = true --default split behavior
vim.opt.spellfile = os.getenv("HOME") .. '/.dictwords.utf-8.add' --added words
vim.opt.list = false --show tabs as pale >
vim.opt.listchars = 'space:*,tab:->\\'
vim.opt.autoread = true -- auto reload file when changed from outside
vim.opt.textwidth = 0
vim.wo.colorcolumn = '0'
--<https://github.com/Konfekt/vim-langtool section>
vim.g.langtool_jar='/tmp/LanguageTool-6.3/languagetool-commandline.jar'
--<completion section>
local cmp = require('cmp')
cmp.setup({
  snippet = {
    expand = function(args)
       require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
    end,
  },
  window = {
    completion = cmp.config.window.bordered(),
    documentation = cmp.config.window.bordered(),
  },
  mapping = cmp.mapping.preset.insert({
    ['<C-b>'] = cmp.mapping.scroll_docs(-4),
    ['<C-f>'] = cmp.mapping.scroll_docs(4),
    ['<C-Space>'] = cmp.mapping.complete(),
    ['<C-e>'] = cmp.mapping.abort(),
    ['<Tab>'] = cmp.mapping.select_next_item(),
    ['<S-Tab>'] = cmp.mapping.select_prev_item(),
    ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
  }),
  sources = cmp.config.sources({
    { name = 'nvim_lsp' },
    { name = 'fuzzy_buffer' },
    --{ name = 'look' }, --words in a dictionary slow
    { name = 'cmp_ctags' },
    { name = 'luasnip' },
  }, {
    { name = 'buffer' },
  })
})
cmp.setup.cmdline('/', {
  sources = cmp.config.sources({
    { name = 'fuzzy_buffer' }
  })
})
-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(':', {
  mapping = cmp.mapping.preset.cmdline(),
  sources = cmp.config.sources({
    { name = 'path' }
  }, {
    { name = 'cmdline' }
  })
})
--<colorscheme section>
require("nord").setup({
  transparent = true, --disable setting the background color
  terminal_colors = true, --colors for :terminal in Neovim
  diff = { mode = "bg" }, --color backgrounds in diff mode [bg|fg]
  borders = true --visible border between verticaly split windows
})
vim.cmd.colorscheme("nord")
--vim.cmd('colorscheme blue') --no
--vim.cmd('colorscheme darkblue') --no
--vim.cmd('colorscheme elflord') --no
--vim.cmd('colorscheme evening') --no
--vim.cmd('colorscheme industry') --no
--vim.cmd('colorscheme murphy') --no
--vim.cmd('colorscheme pablo') --no
--vim.cmd('colorscheme peachpuff') --pink
--vim.cmd('colorscheme ron') --aqua everywhere
--vim.cmd('colorscheme torte') --no
--vim.cmd('colorscheme zellner') --white bright
--vim.cmd('colorscheme slate') --pragmatic bright
--vim.cmd('colorscheme shine') --retarded bright
--vim.cmd('colorscheme delek') --retarded bright
--vim.cmd('colorscheme morning') --slightly less retarded bright
--vim.cmd('colorscheme koehler') --norm
--vim.cmd('colorscheme desert') --norm
--<autocmds section>
vim.api.nvim_create_autocmd('BufRead', { --restore last cursor position
  callback = function(opts)
    vim.api.nvim_create_autocmd('BufWinEnter', {
      once = true,
      buffer = opts.buf,
      callback = function()
        local ft = vim.bo[opts.buf].filetype
        local last_known_line = vim.api.nvim_buf_get_mark(opts.buf, '"')[1]
        if
          not (ft:match 'commit' and ft:match 'rebase')
          and last_known_line > 1
          and last_known_line <= vim.api.nvim_buf_line_count(opts.buf)
        then
          vim.api.nvim_feedkeys([[g`"]], 'nx', false)
        end
      end,
    })
  end,
})
local group = vim.api.nvim_create_augroup("filetypedetect", { clear = true })
vim.api.nvim_create_autocmd({"BufRead","BufNewFile"}, {
  group = group,
  pattern = {"*mutt-*"},
  callback = function ()
    vim.cmd("setfiletype mail")
  end
})
vim.api.nvim_create_autocmd({"TermEnter"}, {
  callback = function ()
    vim.opt.scrolloff = 0
    vim.opt.spell = false
  end
})
vim.api.nvim_create_autocmd({"BufEnter", "BufWinEnter"}, {
  pattern = {"*.md", "*.txt"},
  callback = function ()
    vim.opt.scrolloff = 999
    -- vim.opt.textwidth = 0
    vim.opt.spell = true
    vim.opt.spelllang = 'en_us'
    --]s to jump to next spelling error (incl. regional)
    --]S to jump to next spelling error (not incl. regional)
    --z= on incorrect word for suggestions
    --zg to add to dictionary
  end
})
local unlim_line_length = function()
  vim.opt.formatoptions:remove('t')
  vim.wo.colorcolumn = ''
end
vim.api.nvim_create_autocmd({'BufNewFile','BufRead'}, {
  pattern = {'*sfeedrc*','/tmp/qmv*','/tmp/calcurse-note*','/tmp/dl.sh'},
  callback = unlim_line_length,
})
vim.api.nvim_create_autocmd('BufRead', {
  pattern = '*.bbcode',
  callback = function() vim.opt.filetype = 'bbcode' end,
})
-- vim.api.nvim_create_autocmd('BufRead', {
--   pattern = '/tmp/calcurse*',
--   callback = function() vim.opt.filetype = 'markdown' end,
-- })
vim.api.nvim_create_autocmd({'BufNewFile','BufRead'}, {
  pattern = '/tmp/crontab.*',
  callback = function() vim.wo.colorcolumn = '' end,
})
vim.api.nvim_create_autocmd('BufWritePre', { --auto del trail whitespace
  pattern = '*',
  command = ':%s/\\s\\+$//e',
})
vim.api.nvim_create_autocmd('BufRead', {
  pattern = '*.c',
  command = '1;/{',
})
--<keymapping section>
vim.keymap.set('n', '<Up>', '<Nop>') --disable arrow keys
vim.keymap.set('n', '<Down>', '<Nop>') --disable arrow keys
vim.keymap.set('n', '<Left>', '<Nop>') --disable arrow keys
vim.keymap.set('n', '<Right>', '<Nop>') --disable arrow keys
vim.keymap.set('n', 'gf', '<C-w><C-f>') --go to file under cursor
vim.keymap.set('v', '<', '<gv') --retain selection on indent
vim.keymap.set('v', '>', '>gv') --retain selection on indent
vim.keymap.set('n', '<F6>', ':setlocal spell! spelllang=en_us<cr>')
vim.keymap.set('n', '<C-k>', '<C-w>k') --buffer navigation
vim.keymap.set('n', '<C-j>', '<C-w>j') --buffer navigation
vim.keymap.set('n', '<C-l>', '<C-w>l') --buffer navigation
vim.keymap.set('n', '<C-h>', '<C-w>h') --buffer navigation
-- Cntrl-] to jump to definition
vim.keymap.set('n', '<C-[>', '<C-t>') --jump back from definition
vim.keymap.set('n', 'S', ':%s//g<Left><Left>') --search and replace
vim.g.mapleader = ';'
vim.keymap.set('t', '<Leader><Esc>', '<C-\\><C-N>') --make Esc work in terminal
vim.keymap.set('n', '<Leader>cfi', 'iint ){<cr>return 0;<cr>}<ESC>kkf)i') --new int i C function
vim.keymap.set('n', '<Leader>cfv', 'ivoid )<cr>{<cr>return;<cr>}<ESC>kkkf)i') --new void i C function
vim.keymap.set('n', '<Leader>ch', ':e %:p:s,.h$,.X123X,:s,.c$,.h,:s,.X123X$,.c,<CR>') --switch between .h and .c files
vim.keymap.set('v', '<Leader>y', '"+y') --copy to system clipboard
vim.keymap.set('n', '<Leader>y', '"+y') --copy to system clipboard
vim.keymap.set('n', '<Leader>yy', '"+yy') --copy to system clipboard
vim.keymap.set('n', '<Leader>p', '"+p') --paste from system clipboard
vim.keymap.set('n', '<Leader>P', '"+P') --paste from system clipboard
vim.keymap.set('v', '<Leader>p', '"+p') --paste from system clipboard
vim.keymap.set('v', '<Leader>P', '"+p') --paste from system clipboard
vim.keymap.set('n', '<Leader>a', ':lua vim.lsp.buf.code_action()<cr>') --LSP suggested action
--<toggleterm-plugin section>
require('toggleterm').setup({
  open_mapping = '<C-g>',
  direction = 'horizontal',
  shade_terminals = true
})
--<Comment-plugin section>
require('Comment').setup() --gc = comment selection, gcc = comment line
require("nvim-surround").setup({
  surrounds = {
    ["S"] = { add =  { "<emphasis>" , "</emphasis>" } },
    ["C"] = { add =  { "<code>" , "</code>" } },
    ["J"] = { add =  { "<strong>" , "</strong>" } },
  }
})