# typed: true
# frozen_string_literal: true

module CLI
  module UI
    module Frame
      module FrameStyle
        module Bracket
          extend FrameStyle

          VERTICAL    = '┃'
          HORIZONTAL  = '━'
          DIVIDER     = '┣'
          TOP_LEFT    = '┏'
          BOTTOM_LEFT = '┗'

          class << self
            extend T::Sig

            sig { override.returns(Symbol) }
            def style_name
              :bracket
            end

            sig { override.returns(String) }
            def prefix
              VERTICAL
            end

            # Draws the "Open" line for this frame style
            #
            # ==== Attributes
            #
            # * +text+ - (required) the text/title to output in the frame
            #
            # ==== Options
            #
            # * +:color+ - (required) The color of the frame.
            #
            # ==== Output
            #
            #   ┏━━ Open
            #
            sig { override.params(text: String, color: CLI::UI::Color).returns(String) }
            def start(text, color:)
              edge(text, color: color, first: TOP_LEFT)
            end

            # Draws a "divider" line for the current frame style
            #
            # ==== Attributes
            #
            # * +text+ - (required) the text/title to output in the frame
            #
            # ==== Options
            #
            # * +:color+ - (required) The color of the frame.
            #
            # ==== Output:
            #
            #   ┣━━ Divider
            #
            sig { override.params(text: String, color: CLI::UI::Color).returns(String) }
            def divider(text, color:)
              edge(text, color: color, first: DIVIDER)
            end

            # Draws the "Close" line for this frame style
            #
            # ==== Attributes
            #
            # * +text+ - (required) the text/title to output in the frame
            #
            # ==== Options
            #
            # * +:color+ - (required) The color of the frame.
            # * +:right_text+ - Text to print at the right of the line. Defaults to nil
            #
            # ==== Output:
            #
            #   ┗━━ Close
            #
            sig { override.params(text: String, color: CLI::UI::Color, right_text: T.nilable(String)).returns(String) }
            def close(text, color:, right_text: nil)
              edge(text, color: color, right_text: right_text, first: BOTTOM_LEFT)
            end

            private

            sig do
              params(text: String, color: CLI::UI::Color, first: String, right_text: T.nilable(String)).returns(String)
            end
            def edge(text, color:, first:, right_text: nil)
              color = CLI::UI.resolve_color(color)

              preamble = +''

              preamble << color.code if CLI::UI.enable_color?
              preamble << first << (HORIZONTAL * 2)

              unless text.empty?
                preamble << ' ' << CLI::UI.resolve_text("{{#{color.name}:#{text}}}") << ' '
              end

              suffix = +''

              if right_text
                suffix << ' ' << right_text << ' '
              end

              o = +''

              unless CLI::UI.enable_cursor?
                o << color.code if CLI::UI.enable_color?
                o << preamble
                o << color.code if CLI::UI.enable_color?
                o << suffix
                o << CLI::UI::Color::RESET.code if CLI::UI.enable_color?
                o << "\n"

                return o
              end

              preamble_start = Frame.prefix_width

              # If prefix_width is non-zero, we need to subtract the width of
              # the final space, since we're going to write over it.
              preamble_start -= 1 if preamble_start.nonzero?

              # Jumping around the line can cause some unwanted flashes
              o << CLI::UI::ANSI.hide_cursor

              # reset to column 1 so that things like ^C don't ruin formatting
              o << "\r"

              o << color.code if CLI::UI.enable_color?
              o << print_at_x(preamble_start, preamble)
              o << color.code if CLI::UI.enable_color?
              o << suffix
              o << CLI::UI::Color::RESET.code if CLI::UI.enable_color?
              o << CLI::UI::ANSI.show_cursor
              o << "\n"

              o
            end
          end
        end
      end
    end
  end
end