Wezterm Config Windows (WSL2)

local wezterm = require 'wezterm'
local symbols = require("wezterm").nerdfonts

local colors = { -- Dracula+
  foreground = "#f8f8f2",
  background = "#212121",

  cursor_bg = "#ECEFF4",
  cursor_fg = "#0E1415",
  cursor_border = "#f8f8f2",

  selection_fg = "none",
  selection_bg = "rgba(68,71,90,0.5)",

  scrollbar_thumb = "#44475a",
  split = "#6272a4",

  ansi = { "#21222C", "#FF5555", "#50FA7B", "#FFCB6B", "#BD93F9", "#FF79C6", "#8BE9FD", "#BBBBBB" },
  brights = { "#545454", "#FF6E6E", "#69FF94", "#F1FA8C", "#D6ACFF", "#FF92DF", "#A4FFFF", "#FFFFFF" },

  indexed = {
    -- might need to change this
    [16] = "#FFFFFF",
    [17] = "#BBBBBB",
  }
}


-- Setting the tabs
local tabs = {}

-- Strips basename from a file path (E.g.: /cat/dog becomes dog) and
-- strip the executable extension
local function stripbase(path)
  local new_path = string.gsub(path, "(.*[/\\])(.*)", "%2")
  return new_path:gsub("%.exe$", "")
end

-- Tab separator icons
local FIRST_TAB_LEFT_SIDE = "█"
local TAB_LEFT_SIDE = symbols.ple_left_half_circle_thick
local TAB_RIGHT_SIDE = symbols.ple_right_half_circle_thick

-- Running process icons
local CMD_ICON = symbols.cod_terminal_cmd
local PS_ICON = symbols.cod_terminal_powershell
local BASH_ICON = symbols.cod_terminal_bash
local WSL_ICON = symbols.cod_terminal_linux
local HOURGLASS_ICON = symbols.fa_hourglass_half
local NVIM_ICON = symbols.custom_vim

-- Default colors
local BACKGROUND_COLOR = colors.background
local FOREGROUND_COLOR = colors.foreground
local EDGE_COLOR = colors.background
local DIM_COLOR = colors.background

function tabs.setup()
  -- Decorate the tab bar with icons based on the running shell/application and its state
  wezterm.on("format-tab-title", function(tab, _, _, _, hover, max_width)
    if tab.is_active then
      BACKGROUND_COLOR = colors.ansi[5]
      FOREGROUND_COLOR = colors.ansi[1]
    elseif hover then
      BACKGROUND_COLOR = colors.brights[4]
      FOREGROUND_COLOR = colors.ansi[1]
    else
      BACKGROUND_COLOR = colors.selection_bg
      FOREGROUND_COLOR = colors.selection_fg
    end

    local edge_foreground = BACKGROUND_COLOR
    local process_name = tab.active_pane.foreground_process_name
    local exec_name = stripbase(process_name)
    local title_with_icon = ""

    -- Select an appropriate icon
    if exec_name == "pwsh" then
      title_with_icon = PS_ICON .. " PS"
    elseif exec_name == "cmd" then
      title_with_icon = CMD_ICON .. " CMD"
    elseif exec_name == "wsl" or exec_name == "wslhost" then
      title_with_icon = WSL_ICON .. " WSL"
    elseif exec_name == "bash" then
      title_with_icon = BASH_ICON .. " BASH"
    elseif exec_name == "nvim" then
      title_with_icon = NVIM_ICON .. " NVIM"
    else
      title_with_icon = HOURGLASS_ICON .. " " .. exec_name
    end

    -- Identify tab number with a numeral
    local id = string.format("%s", tab.tab_index + 1)

    -- Trim long titles
    local title = " " .. wezterm.truncate_right(title_with_icon, max_width - 5) .. " "

    return {
      { Attribute = { Intensity = "Bold" } },
      { Background = { Color = EDGE_COLOR } },
      { Foreground = { Color = edge_foreground } },
      { Text = tab.tab_index == 0 and FIRST_TAB_LEFT_SIDE or TAB_LEFT_SIDE },
      { Background = { Color = BACKGROUND_COLOR } },
      { Foreground = { Color = FOREGROUND_COLOR } },
      { Text = id },
      { Text = title },
      { Foreground = { Color = DIM_COLOR } },
      { Background = { Color = EDGE_COLOR } },
      { Foreground = { Color = edge_foreground } },
      { Text = TAB_RIGHT_SIDE },
      { Attribute = { Intensity = "Normal" } },
    }
  end)
end

return {
  -- Font settings
  font = wezterm.font("JetBrainsMono Nerd Font"),
  font_size = 11,
  freetype_interpreter_version = 40,
  unicode_version = 14,
  harfbuzz_features = { "calt=1", "liga=1", "clig=1", "dlig=1" },
  warn_about_missing_glyphs = false,

  -- reason: https://github.com/DerekSauer/wezterm-config/blob/1529c3157c13c508005547e9a8513ab688361b8a/wezterm.lua#L22
  -- front_end = "OpenGL",

  -- Window size and theming
  colors = {
    foreground = colors.foreground,
    background = colors.background,

    cursor_bg = colors.cursor_bg,
    cursor_fg = colors.cursor_fg,
    cursor_border = colors.cursor_border,

    selection_fg = colors.selection_fg,
    selection_bg = colors.selection_bg,

    scrollbar_thumb = colors.scrollbar_thumb,
    split = colors.split,

    ansi = colors.ansi,
    brights = colors.brights,
    indexed = colors.indexed,

    tab_bar = {
      background = colors.background,
      new_tab = {
        bg_color = colors.background,
        fg_color = colors.foreground,
        intensity = "Bold",
      },
      new_tab_hover = {
        bg_color = colors.background,
        fg_color = colors.foreground,
        italic = true,
        intensity = "Bold",
      },
    },

  },
  initial_cols = 120,
  initial_rows = 32,
  audible_bell = "Disabled",
  scrollback_lines = 1000,
  force_reverse_video_cursor = true,
  enable_scroll_bar = false,
  window_background_opacity = 1.0,
  text_background_opacity = 1.0,
  window_padding = {
    left = 0,
    right = 0,
    top = 0,
    bottom = 0,
  },

  default_cursor_style = "BlinkingUnderline",
  default_prog = { 'powershell.exe' },

  -- Tabbar
  -- hide_tab_bar_if_only_one_tab = true,
  use_fancy_tab_bar = false,
  tab_max_width = 60,

  -- Window
  window_decorations = "INTEGRATED_BUTTONS | RESIZE",
  adjust_window_size_when_changing_font_size = false,
  integrated_title_button_style = "Windows",
  integrated_title_button_color = "auto",
  integrated_title_button_alignment = "Right",
  window_close_confirmation = 'AlwaysPrompt',

  -- Keys
  send_composed_key_when_left_alt_is_pressed = false,
  send_composed_key_when_right_alt_is_pressed = false,

  -- Visual bell, flare the cursor
  visual_bell = {
    fade_in_duration_ms = 75,
    fade_out_duration_ms = 75,
    target = "CursorColor",
  },

  tabs.setup(),

  hyperlink_rules = {
    { -- Linkify things that look like URLs
      regex = "\\b\\w+://(?:[\\w.-]+)\\.[a-z]{2,15}\\S*\\b",
      format = "$0",
    },
    { -- match the URL with a PORT such 'http://localhost:3000/index.html'
      regex = "\\b\\w+://(?:[\\w.-]+):\\d+\\S*\\b",
      format = "$0",
    },
    { -- linkify email addresses
      regex = "\\b\\w+@[\\w-]+(\\.[\\w-]+)+\\b",
      format = "mailto:$0",
    },
    { -- file:// URI
      regex = "\\bfile://\\S*\\b",
      format = "$0",
    },
  },
}