local M = {}

function M.keymaps(mappings)
  for mode, maps in pairs(mappings) do
    for keymap, options in pairs(maps) do
      if options then
        local cmd = options
        local keymap_opts = {}
        if type(options) == "table" then
          cmd = options[1]
          keymap_opts = vim.tbl_deep_extend("force", keymap_opts, options)
          keymap_opts[1] = nil
        end

        if mode and keymap and cmd and keymap_opts then
          vim.keymap.set(mode, keymap, cmd, keymap_opts)
        end
      end
    end
  end
end

function M.spread(template)
  local result = {}
  for key, value in pairs(template) do
    result[key] = value
  end

  return function(table)
    for key, value in pairs(table) do
      result[key] = value
    end
    return result
  end
end

-- From https://github.com/lukas-reineke/onedark.nvim/blob/master/lua/onedark.lua
function M.highlight(group, options)
  local guifg = options.fg or "NONE"
  local guibg = options.bg or "NONE"
  local guisp = options.sp or "NONE"
  local gui = options.gui or "NONE"
  local blend = options.blend or 0
  local ctermfg = options.ctermfg or "NONE"

  vim.cmd(
    string.format(
      "highlight %s guifg=%s ctermfg=%s guibg=%s guisp=%s gui=%s blend=%d",
      group,
      guifg,
      ctermfg,
      guibg,
      guisp,
      gui,
      blend
    )
  )
end

return M