function open_or_create_file(tfilename)
  -- complete filepath from the file where this is called
  local parent = vim.fn.expand("%:p:h")
  local newfilepath = parent .. "/" .. vim.fn.expand(tfilename)

  if vim.fn.filereadable(newfilepath) ~= 1 then
    -- create parent directory
    vim.fn.system("mkdir -p " .. vim.fn.shellescape(parent))
    vim.fn.system("touch " .. vim.fn.shellescape(newfilepath))
  end
  vim.cmd(":e " .. newfilepath)
end

return {
  "AstroNvim/astrocore",
  ---@type AstroCoreOpts
  opts = {
    -- Mapping data with "desc" stored directly by vim.keymap.set().
    --
    -- Please use this mappings table to set keyboard mapping since this is the
    -- lower level configuration and more robust one. (which-key will
    -- automatically pick-up stored data by this setting.)
    mappings = {
      -- first key is the mode
      n = {
        -- tables with the `name` key will be registered with which-key if it's installed
        -- this is useful for naming menus
        ["<leader>b"] = { name = "Buffers" },
        -- quick save
        -- ["<C-s>"] = { ":w!<cr>", desc = "Save File" },  -- change description but the same command

        -- Switch between tabs
        ["<S-Tab>"] = { ":bprev<CR>" },
        ["<Tab>"] = { ":bnext<CR>" },

        -- Don't error if file doesn't exist
        ["gf"] = {
          function()
            open_or_create_file(vim.fn.expand("<cfile>"))
          end,
          desc = "Create file",
        },
        ["<leader>*"] = {
          function()
            require("telescope.builtin").grep_string()
          end,
          desc = "Find for word under cursor",
        },
        ["<leader><leader>"] = {
          function()
            require("telescope.builtin").find_files()
          end,
          desc = "Find files",
        },
      },
      t = {
        -- setting a mapping to false will disable it
        -- ["<esc>"] = false,
      },
      c = {
        -- setting a mapping to false will disable it
        ["w!!"] = { "w !sudo tee > /dev/null %", desc = "Write as sudo" },
      },
    },
  },
}