// ANSI color and styling utilities
// Provides semantic style functions for terminal colors

// Check if colors are disabled via -no-color flag
no_color = sys("-no-color") or false

function _fg(color)
  if no_color then
    return ""
  end
  c = {
    "black" = 30, "red" = 31, "green" = 32, "yellow" = 33,
    "blue" = 34, "magenta" = 35, "cyan" = 36, "white" = 37,
    "gray" = 90, "bright_red" = 91, "bright_green" = 92, "bright_yellow" = 93,
    "bright_blue" = 94, "bright_magenta" = 95, "bright_cyan" = 96, "bright_white" = 97,
  }
  code = c[color]
  if code == nil then
    return ""
  end
  return "\033[" + code + "m"
end

function _bg(color)
  if no_color then
    return ""
  end
  c = {
    "black" = 40, "red" = 41, "green" = 42, "yellow" = 43,
    "blue" = 44, "magenta" = 45, "cyan" = 46, "white" = 47,
    "gray" = 100, "bright_red" = 101, "bright_green" = 102, "bright_yellow" = 103,
    "bright_blue" = 104, "bright_magenta" = 105, "bright_cyan" = 106, "bright_white" = 107,
  }
  code = c[color]
  if code == nil then
    return ""
  end
  return "\033[" + code + "m"
end

function _attr(name)
  if no_color then
    return ""
  end
  a = {
    "bold" = 1, "dim" = 2, "italic" = 3, "underline" = 4,
    "blink" = 5, "reverse" = 7, "hidden" = 8, "strikethrough" = 9,
  }
  code = a[name]
  if code == nil then
    return ""
  end
  return "\033[" + code + "m"
end

function combine(fg = nil, bg = nil, bold = false, dim = false, italic = false, underline = false, blink = false, reverse = false)
  code = ""
  if fg then code = code + _fg(fg) end
  if bg then code = code + _bg(bg) end
  if bold then code = code + _attr("bold") end
  if dim then code = code + _attr("dim") end
  if italic then code = code + _attr("italic") end
  if underline then code = code + _attr("underline") end
  if blink then code = code + _attr("blink") end
  if reverse then code = code + _attr("reverse") end
  return code
end

clear = no_color ? "" : "\033[0m"

// Default semantic style codes
def_error = combine(fg="red", bold=true)
def_warn = combine(fg="yellow", bold=true)
def_title = combine(fg="cyan", bold=true)
def_code = combine(fg="green")
def_quote = combine(fg="gray", italic=true)
def_comment = combine(fg="gray")
def_link = combine(fg="blue", underline=true)

// Semantic style functions
function error(text)
  return def_error + text + clear
end

function warning(text)
  return def_warn + text + clear
end

function title(text)
  return def_title + text + clear
end

function code_style(text)
  return def_code + text + clear
end

function blockquote(text)
  return def_quote + text + clear
end

function comment(text)
  return def_comment + text + clear
end

function link(text)
  return def_link + text + clear
end

// Convenience functions for common styles
function highlight(text)
  h = combine(fg="black", bg="bright_yellow", bold=true)
  return h + text + clear
end

function success(text)
  s = combine(fg="green", bold=true)
  return s + text + clear
end

function info(text)
  i = combine(fg="cyan")
  return i + text + clear
end

return {
  combine = combine,
  clear = clear,
  error = error,
  warning = warning,
  title = title,
  code = code_style,
  blockquote = blockquote,
  comment = comment,
  link = link,
  highlight = highlight,
  success = success,
  info = info,
}