-- autocmd

-- read files correctly
vim.filetype.add({
  extension = {
    c = 'c',
    h = 'c',
    html = 'html',
    java = 'java',
    js = 'javascript',
    lua = 'lua',
    md = 'markdown',
    nim = 'nim',
    py = 'python',
    tex = 'tex',
  }
})

-- delete trailing whitespaces on save
vim.api.nvim_create_autocmd({ 'BufWritePre' },
  {
    pattern = { '*' },
    command = [[%s/\s\+$//e]],
  })

-- settings for filetype: c

vim.api.nvim_create_autocmd({ 'VimLeave' },
  {
    pattern = { 'c' },
    command = '!cclear'
  })

vim.api.nvim_create_autocmd({ 'BufEnter', 'FileType' },
  {
    pattern = { 'c' },
    command = 'set colorcolumn=80'
  })

-- settings for filetype: java

vim.api.nvim_create_autocmd({ 'FileType' },
  {
    pattern = { 'java' },
    command = 'setlocal shiftwidth=2 softtabstop=2',
  })

vim.api.nvim_create_autocmd({ 'BufEnter', 'FileType' },
  {
    pattern = { 'java' },
    command = 'set colorcolumn=100'
  })

-- settings for filetype: javascript

vim.api.nvim_create_autocmd({ 'FileType' },
  {
    pattern = { 'javascript' },
    command = 'setlocal shiftwidth=2 softtabstop=2',
  })

-- settings for filetype: lua

vim.api.nvim_create_autocmd({ 'FileType' },
  {
    pattern = { 'lua' },
    command = 'setlocal shiftwidth=2 softtabstop=2',
  })

vim.api.nvim_create_autocmd({ 'BufEnter', 'FileType' },
  {
    pattern = { 'lua' },
    command = 'set colorcolumn=100'
  })

-- settings for filetype: markdown

vim.api.nvim_create_autocmd({ 'FileType' },
  {
    pattern = { 'markdown' },
    command = 'setlocal shiftwidth=2 softtabstop=2',
  })

vim.api.nvim_create_autocmd({ 'BufEnter', 'FileType' },
  {
    pattern = { 'markdown' },
    command = 'set colorcolumn=100'
  })

vim.api.nvim_create_autocmd({ 'BufEnter', 'FileType' },
  {
    pattern = { 'markdown' },
    command = 'set conceallevel=2'
  })

-- settings for filetype: nim

vim.api.nvim_create_autocmd({ 'BufEnter', 'FileType' },
  {
    pattern = { 'nim' },
    command = 'set colorcolumn=80'
  })

-- settings for filetype: python

vim.api.nvim_create_autocmd({ 'BufEnter', 'FileType' },
  {
    pattern = { 'python' },
    command = 'set colorcolumn=80'
  })

-- settings for filetype: tex

vim.api.nvim_create_autocmd({ 'VimLeave' },
  {
    pattern = { 'tex' },
    command = '!texclear %'
  })

vim.api.nvim_create_autocmd({ 'BufEnter', 'FileType' },
  {
    pattern = { 'tex' },
    command = 'set colorcolumn=80'
  })