nvim-config/lua/mappings.lua

local keymap = vim.keymap
local uv = vim.uv

keymap.set({ "n", "x" }, ";", ":", { desc = "enter command mode" })
keymap.set("i", "<c-u>", "<Esc>viwUea", { desc = "make word upper case" })
keymap.set("i", "<c-t>", "<Esc>b~lea", { desc = "make word title case" })
keymap.set("n", "<leader>p", "m`o<ESC>p``", { desc = "paste below current line" })
keymap.set("n", "<leader>P", "m`O<ESC>p``", { desc = "paste above current line" })
keymap.set("n", "<leader>w", "<cmd>update<cr>", { silent = true, desc = "save buffer" })
keymap.set("n", "<leader>q", "<cmd>x<cr>", { silent = true, desc = "quit current window" })
keymap.set("n", "<leader>Q", "<cmd>qa!<cr>", { silent = true, desc = "quit nvim" })
keymap.set("n", [[\x]], "<cmd>windo lclose <bar> cclose <cr>", {
  silent = true,
  desc = "close qf and location lists",
})
keymap.set("n", [[\d]], "<cmd>bprevious <bar> bdelete #<cr>", {
  silent = true,
  desc = "delete current buffer",
})
keymap.set("n", [[\D]], function()
  local buf_ids = vim.api.nvim_list_bufs()
  local cur_buf = vim.api.nvim_win_get_buf(0)

  for _, buf_id in pairs(buf_ids) do
    if vim.api.nvim_get_option_value("buflisted", { buf = buf_id }) and buf_id ~= cur_buf then
      vim.api.nvim_buf_delete(buf_id, { force = true })
    end
  end
end, { desc = "delete other buffers" })
keymap.set("n", "<space>o", "printf('m`%so<ESC>``', v:count1)", {
  expr = true,
  desc = "insert line below",
})
keymap.set("n", "<space>O", "printf('m`%sO<ESC>``', v:count1)", {
  expr = true,
  desc = "insert line above",
})

-- Move the cursor base on physical lines, not the actual lines
keymap.set("n", "j", "v:count == 0 ? 'gj' : 'j'", { expr = true })
keymap.set("n", "k", "v:count == 0 ? 'gk' : 'k'", { expr = true })
keymap.set("n", "^", "g^")
keymap.set("n", "0", "g0")

-- Don't include white space characters when using '$' in visual mode
keymap.set("x", "$", "g_")

-- Go to start and end of line easier
keymap.set({ "n", "x" }, "H", "^")
keymap.set({ "n", "x" }, "L", "g_")

-- Continuous visual shifting
keymap.set("x", "<", "<gv")
keymap.set("x", ">", ">gv")

keymap.set("n", "<leader>ev", "<cmd>tabnew $MYVIMRC <bar> tcd %:h<cr>", {
  silent = true,
  desc = "open init.lua",
})
keymap.set("n", "<leader>sv", function()
  vim.cmd([[
    update $MYVIMRC
    source $MYVIMRC
  ]])
  vim.notify("Nvim config successfully reloaded!", vim.log.levels.INFO, { title = "nvim-config" })
end, { silent = true, desc = "reload init.lua" })
keymap.set("n", "<leader>v", "printf('`[%s`]', getregtype()[0])", {
  expr = true,
  desc = "reselect last pasted area",
})
keymap.set("n", "<leader>cd", "<cmd>lcd %:p:h<cr><cmd>pwd<cr>", { desc = "change cwd" })
keymap.set("t", "<Esc>", [[<c-\><c-n>]], { desc = "quit term" })
keymap.set("n", "<F11>", "<cmd>set spell!<cr>", { desc = "toggle spell" })
keymap.set("i", "<F11>", "<c-o><cmd>set spell!<cr>", { desc = "toggle spell" })

-- Change text without putting it into the vim register
keymap.set("n", "c", '"_c')
keymap.set("n", "C", '"_C')
keymap.set("n", "cc", '"_cc')
keymap.set("x", "c", '"_c')

keymap.set("n", "<leader><space>", "<cmd>StripTrailingWhitespace<cr>", { desc = "remove trailing spaces" })
keymap.set("n", "<leader>y", "<cmd>%yank<cr>", { desc = "yank entire buffer" })
keymap.set("n", "<leader>cl", "<cmd>call utils#ToggleCursorCol()<cr>", { desc = "toggle cursor column" })
keymap.set("n", "<A-k>", '<cmd>call utils#SwitchLine(line("."), "up")<cr>', { desc = "move line up" })
keymap.set("n", "<A-j>", '<cmd>call utils#SwitchLine(line("."), "down")<cr>', { desc = "move line down" })
keymap.set("x", "<A-k>", '<cmd>call utils#MoveSelection("up")<cr>', { desc = "move selection up" })
keymap.set("x", "<A-j>", '<cmd>call utils#MoveSelection("down")<cr>', { desc = "move selection down" })
keymap.set("x", "p", '"_c<Esc>p', { desc = "replace visual selection with text in register without contaminating the register" })
keymap.set("n", "gb", '<cmd>call buf_utils#GoToBuffer(v:count, "forward")<cr>', {
  desc = "go to buffer (forward)",
})
keymap.set("n", "gB", '<cmd>call buf_utils#GoToBuffer(v:count, "backward")<cr>', {
  desc = "go to buffer (backward)",
})

-- Switch windows
keymap.set("n", "<left>", "<c-w>h")
keymap.set("n", "<right>", "<c-w>l")
keymap.set("n", "<up>", "<c-w>k")
keymap.set("n", "<down>", "<c-w>j")

keymap.set({ "x", "o" }, "iu", "<cmd>call text_obj#URL()<cr>", { desc = "URL text object" })
keymap.set({ "x", "o" }, "iB", ":<C-U>call text_obj#Buffer()<cr>", { desc = "buffer text object" })
keymap.set("n", "J", function()
  vim.cmd([[
    normal! mzJ`z
    delmarks z
  ]])
end, { desc = "join lines without moving cursor" })
keymap.set("n", "gJ", function()
  vim.cmd([[
    normal! mzgJ`z
    delmarks z
  ]])
end, { desc = "join lines without moving cursor" })

-- Break inserted text into smaller undo units
local undo_ch = { ",", ".", "!", "?", ";", ":" }
for _, ch in ipairs(undo_ch) do
  keymap.set("i", ch, ch .. "<c-g>u")
end

keymap.set("i", "<A-;>", "<Esc>miA;<Esc>`ii", { desc = "insert semicolon at end" })
keymap.set("i", "<c-a>", "<HOME>", { desc = "go to beginning of line" })
keymap.set("i", "<c-e>", "<END>", { desc = "go to end of line" })
keymap.set("c", "<c-a>", "<HOME>", { desc = "go to beginning of command" })
keymap.set("i", "<c-d>", "<DEL>", { desc = "delete character to right of cursor" })
keymap.set("n", "<leader>cb", function()
  local cnt = 0
  local blink_times = 7
  local timer = uv.new_timer()
  if timer == nil then
    return
  end

  timer:start(
    0,
    100,
    vim.schedule_wrap(function()
      vim.cmd([[
        set cursorcolumn!
        set cursorline!
      ]])

      if cnt == blink_times then
        timer:close()
      end

      cnt = cnt + 1
    end)
  )
end, { desc = "show cursor" })