dotfiles/.config/nixpkgs/neovim/config/lua/user/plugins/editing.lua

local MiniAi = require('mini.ai')
local MiniAlign = require('mini.align')
local MiniComment = require('mini.comment')
local MiniOperators = require('mini.operators')
local MiniPairs = require('mini.pairs')
local MiniSurround = require('mini.surround')

-- comment actions
MiniComment.setup()
-- keymap: overrides default vim gc / gcc

-- surround actions
MiniSurround.setup({
  custom_surroundings = {
    -- js template string
    ['$'] = {
      output = {
        left = '`${',
        right = '}`',
      },
    },
  },
})
-- keymap:
-- sa (surround add)
-- sr (surround replace)
-- sd (surround delete)

local spec_treesitter = require('mini.ai').gen_spec.treesitter

MiniAi.setup({
  -- only consider the current location
  search_method = 'cover',
  custom_textobjects = {
    ['.'] = spec_treesitter({
      a = '@call.outer',
      i = '@call.inner',
    }),
    [','] = spec_treesitter({
      a = '@parameter.outer',
      i = '@parameter.inner',
    }),
  },
});

-- align actions
MiniAlign.setup()
-- keymap: ga / gA

-- Treesitter-aware split/join
require('treesj').setup({
  use_default_keymaps = false,
})

vim.keymap.set('n', '<Leader>s', '<cmd>TSJSplit<CR>')
vim.keymap.set('n', '<Leader>j', '<cmd>TSJJoin<CR>')

-- autopair brackets
MiniPairs.setup({
  mappings = {
    -- default config includes (, [ and {

    -- autopair <> if preceded by a character, otherwise it might be a regular
    -- comparison operation
    ['<'] = { action = 'open', pair = '<>', neigh_pattern = '%w.' },
    ['>'] = { action = 'close', pair = '<>' },
  },
})

-- extra operators
MiniOperators.setup({
  -- disable evaluate mapping
  evaluate = { prefix = '' },

  -- custom mapping defined later
  replace = { prefix = '' },

  -- other mappings
  -- gm - multiply
  -- gs - sort
  -- gx - exchange
})

MiniOperators.make_mappings('replace', {
  textobject = 'cp',
  line = 'cpp',
  -- overrides default p mapping
  selection = 'p',
})

local function toggle_end_char(char)
  local cursor = vim.api.nvim_win_get_cursor(0)
  local row = cursor[1] - 1
  local end_char = vim.api.nvim_buf_get_text(0, row, -2, row, -1, {})[1]
  if end_char == char then
    vim.api.nvim_buf_set_text(0, row, -2, row, -1, {})
  else
    vim.api.nvim_buf_set_text(0, row, -1, row, -1, { char })
  end
end

-- add ,/; to end of line
vim.keymap.set('i', '<C-,>', function() toggle_end_char(',') end)
vim.keymap.set('i', '<C-;>', function() toggle_end_char(';') end)