local wezterm = require('wezterm')
local config = wezterm.config_builder()

wezterm.on('gui-startup', function()
  local tab, pane, window = wezterm.mux.spawn_window({})
  tab:set_title('home')
end)

if string.find(wezterm.target_triple, 'windows') then
  config.default_prog = {
    'powershell.exe', '-ExecutionPolicy', 'Bypass', '-NoLogo', '-NoExit'
  }
end

config.font = wezterm.font('CaskaydiaCove Nerd Font Mono')
config.font_size = 9
config.harfbuzz_features = { 'calt=0', 'clig=0', 'liga=0' }

config.color_scheme = 'Firefly Traditional'
config.colors = {
  foreground = '#D3D7CF',
  cursor_fg = 'black',
  cursor_bg = 'white',
  cursor_border = 'white',
}

config.use_fancy_tab_bar = false
config.tab_max_width = 64
config.window_padding = {
  left = 0,
  right = 0,
  top = 0,
  bottom = 0,
}

config.keys = {
  {
    key = 'r',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.PromptInputLine({
      description = 'Enter new name for tab',
      action = wezterm.action_callback(function(window, pane, line)
        if line then
          window:active_tab():set_title(line)
        end
      end),
    }),
  },
  {
    key = 'w',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.CloseCurrentPane { confirm = true },
  },
}

local function send_move_key(window, pane)
  -- TODO: Detect if vim/nvim is running
  -- We can't use pane:get_foreground_process_info() because it appears to
  -- contain info about the most recent process launched in the pane. During
  -- testing this was lua-language-server.exe so obisouly can't be used to
  -- determine if we're running inside neovim.
  -- WezTerm supports the OSC 1337 SetUserVar escape sequence, this could be
  -- used to inform WezTerm that neovim is running in a given tab.

  if pane:get_user_vars()['vim'] ~= nil then
    if pane:get_user_vars().vim ~= '1' then
      return false
    end
  elseif #window:active_tab():panes() > 1 then
    return false
  end
  return true
end

local move_mods = 'CTRL'
for _, map in pairs({
  { key = 'h', direction = 'Left' },
  { key = 'l', direction = 'Right' },
  { key = 'k', direction = 'Up' },
  { key = 'j', direction = 'Down' },
}) do
  table.insert(config.keys, {
    key = map.key,
    mods = move_mods,
    action = wezterm.action_callback(function(window, pane)
      if send_move_key(window, pane) then
        window:perform_action(
          wezterm.action.SendKey({ key = map.key, mods = move_mods }), pane)
      else
        window:perform_action(
          wezterm.action.ActivatePaneDirection(map.direction), pane)
      end
    end),
  })
end

-- Attempt require(module) load a module, don't fail if its missing.
-- Additionally, call the returned function passing in the wezterm and config
-- objects defined in this file.
local try_require = function(module)
  pcall(function() require(module)(wezterm, config) end)
end;

try_require('local')

return config