dotfiles/deprecated/nvim/custom/utils/autocmd.lua

local autocmd = vim.api.nvim_create_autocmd

-- set markdown highlight for mdx file
autocmd({ "BufNewFile", "BufRead" }, {
  pattern = { "*.mdx" },
  callback = function()
    local buf = vim.api.nvim_get_current_buf()
    vim.api.nvim_buf_set_option(buf, "filetype", "markdown")
  end,
})

-- Disbale diagnostic for files in node_modules
autocmd({ "BufNewFile", "BufRead" }, {
  pattern = { "**/node_modules/**", "node_modules", "/node_modules/*" },
  callback = function()
    vim.diagnostic.disable(0)
  end,
})

autocmd("FileType", {
  desc = "Close NvimTree before quit nvim",
  pattern = { "NvimTree" },
  callback = function(args)
    autocmd("VimLeavePre", {
      callback = function()
        vim.api.nvim_buf_delete(args.buf, { force = true })
        return true
      end,
    })
  end,
})

autocmd("BufEnter", {
  desc = "Close nvim if NvimTree is only running buffer",
  command = [[if winnr('$') == 1 && bufname() == 'NvimTree_' . tabpagenr() | quit | endif]],
})

-- Automatically update changed file in Vim
-- Triger `autoread` when files changes on disk
-- https://unix.stackexchange.com/questions/149209/refresh-changed-content-of-file-opened-in-vim/383044#383044
-- https://vi.stackexchange.com/questions/13692/prevent-focusgained-autocmd-running-in-command-line-editing-mode
-- autocmd({ "FocusGained", "BufEnter", "CursorHold", "CursorHoldI" }, {
--   command = [[silent! if mode() != 'c' && !bufexists("[Command Line]") | checktime | endif]],
-- })

-- Notification after file change
-- https://vi.stackexchange.com/questions/13091/autocmd-event-for-autoread
autocmd("FileChangedShellPost", {
  command = [[echohl WarningMsg | echo "File changed on disk. Buffer reloaded." | echohl None]],
})

---- 用o换行不要延续注释
local myAutoGroup = vim.api.nvim_create_augroup("myAutoGroup", {
  clear = true,
})
autocmd("BufEnter", {
  group = myAutoGroup,
  pattern = "*",
  callback = function()
    vim.opt.formatoptions = vim.opt.formatoptions
        - "o" -- O and o, don't continue comments
        + "r" -- But do continue when pressing enter.
  end,
})

-- Highlight on yank
local highlight_group = vim.api.nvim_create_augroup("YankHighlight", { clear = true })
autocmd("TextYankPost", {
  callback = function()
    vim.highlight.on_yank()
  end,
  group = highlight_group,
  pattern = "*",
})

-- Remove all trailing whitespace on save
-- autocmd("BufWritePre", {
--  command = [[:%s/\s\+$//e]],
--  group = augroup("TrimWhiteSpaceGrp", { clear = true }),
--})

-- conform.nvim auto save
-- vim.api.nvim_create_autocmd("BufWritePre", {
--   pattern = "*",
--   callback = function(args)
--     require("conform").format { bufnr = args.buf }
--   end,
-- })

-- nvim-lint
-- require('lint').linters_by_ft = {
--   javascript = {"eslint"},
--   typescript = {"eslint"},
-- }
--
-- vim.api.nvim_create_autocmd({ "BufWritePost" }, {
--   callback = function()
--     require("lint").try_lint()
--   end,
-- })