jones-nvim-config/lua/keymaps.lua

local keymap = vim.api.nvim_set_keymap
local opts = { noremap = true, silent = true }

local mappings = {
  n = {
    -- highlighting
    ["<leader>nh"] = ":nohl<CR>",
    -- move between buffers
    ["<c-h>"] = "<C-w>h",
    ["<c-j>"] = "<C-w>j",
    ["<c-k>"] = "<C-w>k",
    ["<c-l>"] = "<C-w>l",
    -- open and close buggers
    ["<leader>sv"] = "<C-w>s",
    ["<leader>sh"] = "<C-w>v",
    ["<leader>se"] = "<C-w>=",
    ["<leader>sx"] = ":close<CR>",
    -- nvim-tree
    ["<leader>e"] = ":NvimTreeFindFileToggle<CR>",
    ["<leader>cf"] = ":NvimTreeCollapse<CR>",
    -- LSP
    ["<leader>ls"] = ":lspstop<CR>",
    ["<leader>lo"] = ":lspstart<CR>",
    -- Telescope
    ["<leader>ff"] = "<cmd>Telescope find_files<CR>",
    ["<leader>fw"] = "<cmd>Telescope live_grep<CR>",
    ["<leader>fc"] = "<cmd>Telescope grep_string<CR>",
    ["<leader>th"] = "<cmd>Themery<CR>",
    ["<leader>sm"] = ":MaximizerToggle<CR>",
    -- FTerm
    ["<leader>h"] = "<cmd>FTermToggle<CR>",
    -- Harpoon
    ["<leader>a"] = "<cmd>HarpoonToggleFile<CR>",
    ["<C-e>"] = "<cmd>HarpoonUI<CR>",
    ["<leader>c"] = "<cmd>HarpoonClear<CR>",
    -- Formating
    ["<leader>fm"] = "<cmd>Format<CR>",
    -- Disable help menu
    ["<F1>"] = "<nop>",
  },
  x = {
    ["<A-j>"] = ":move '>+1<CR>gv-gv",
    ["<A-k>"] = ":move '<-2<CR>gv-gv",
  },
  i = {
    ["<C-Space>"] = { 'copilot#Accept("<CR>")', expr = true },
    ["<A-l>"] = "<esc>",
    ["C-BS"] = "<cmd>HarpoonRemove<CR>",
    -- Disable help menu
    ["<F1>"] = "<nop>",
  },
  t = {
    ["C-h"] = "<C-\\><C-n>:FTermClose<CR>",
  },
}

for mode, mode_mappings in pairs(mappings) do
  for key, mapping in pairs(mode_mappings) do
    if type(mapping) == "function" then
      -- For direct Lua function calls; ensure your function returns a string command
      keymap(mode, key, "<cmd>lua " .. mapping() .. "<CR>", opts)
    elseif type(mapping) == "table" and mapping.expr then
      -- For expression mappings, like for copilot
      local expr_opts = vim.tbl_extend("force", opts, { expr = true })
      keymap(mode, key, mapping[1], expr_opts)
    elseif type(mapping) == "table" then
      -- For mappings that have their options specified directly
      keymap(mode, key, mapping[1], mapping[2] or opts)
    else
      -- For simple string command mappings
      keymap(mode, key, mapping, opts)
    end
  end
end