Files
clientsflow/research/chatwoot/app/services/messages/markdown_renderer_service.rb

114 lines
4.4 KiB
Ruby

class Messages::MarkdownRendererService
CHANNEL_RENDERERS = {
'Channel::Email' => :render_html,
'Channel::WebWidget' => :render_html,
'Channel::Telegram' => :render_telegram_html,
'Channel::Whatsapp' => :render_whatsapp,
'Channel::FacebookPage' => :render_instagram,
'Channel::Instagram' => :render_instagram,
'Channel::Line' => :render_line,
'Channel::TwitterProfile' => :render_plain_text,
'Channel::Sms' => :render_plain_text,
'Channel::TwilioSms' => :render_plain_text
}.freeze
def initialize(content, channel_type, channel = nil)
@content = content
@channel_type = channel_type
@channel = channel
end
def render
return @content if @content.blank?
renderer_method = CHANNEL_RENDERERS[effective_channel_type]
renderer_method ? send(renderer_method) : @content
end
private
def effective_channel_type
# For Twilio SMS channel, check if it's actually WhatsApp
if @channel_type == 'Channel::TwilioSms' && @channel&.whatsapp?
'Channel::Whatsapp'
else
@channel_type
end
end
def commonmarker_doc
@commonmarker_doc ||= CommonMarker.render_doc(@content, [:DEFAULT, :STRIKETHROUGH_DOUBLE_TILDE])
end
def render_html
markdown_renderer = BaseMarkdownRenderer.new
doc = CommonMarker.render_doc(@content, :DEFAULT, [:strikethrough])
markdown_renderer.render(doc)
end
def render_telegram_html
# Strip whitespace from whitespace-only lines to normalize newlines
normalized_content = @content.gsub(/^[ \t]+$/m, '')
content_with_preserved_newlines = preserve_multiple_newlines(normalized_content)
renderer = Messages::MarkdownRenderers::TelegramRenderer.new
doc = CommonMarker.render_doc(content_with_preserved_newlines, [:STRIKETHROUGH_DOUBLE_TILDE], [:strikethrough])
result = renderer.render(doc).gsub(/\n+\z/, '')
restore_multiple_newlines(result)
end
def render_whatsapp
# Strip whitespace from whitespace-only lines to normalize newlines
normalized_content = @content.gsub(/^[ \t]+$/m, '')
content_with_preserved_newlines = preserve_multiple_newlines(normalized_content)
renderer = Messages::MarkdownRenderers::WhatsAppRenderer.new
doc = CommonMarker.render_doc(content_with_preserved_newlines, [:DEFAULT, :STRIKETHROUGH_DOUBLE_TILDE])
result = renderer.render(doc).gsub(/\n+\z/, '')
restore_multiple_newlines(result)
end
def render_instagram
# Strip whitespace from whitespace-only lines to normalize newlines
normalized_content = @content.gsub(/^[ \t]+$/m, '')
content_with_preserved_newlines = preserve_multiple_newlines(normalized_content)
renderer = Messages::MarkdownRenderers::InstagramRenderer.new
doc = CommonMarker.render_doc(content_with_preserved_newlines, [:DEFAULT, :STRIKETHROUGH_DOUBLE_TILDE])
result = renderer.render(doc).gsub(/\n+\z/, '')
restore_multiple_newlines(result)
end
def render_line
# Strip whitespace from whitespace-only lines to normalize newlines
normalized_content = @content.gsub(/^[ \t]+$/m, '')
content_with_preserved_newlines = preserve_multiple_newlines(normalized_content)
renderer = Messages::MarkdownRenderers::LineRenderer.new
doc = CommonMarker.render_doc(content_with_preserved_newlines, [:DEFAULT, :STRIKETHROUGH_DOUBLE_TILDE])
result = renderer.render(doc).gsub(/\n+\z/, '')
restore_multiple_newlines(result)
end
def render_plain_text
# Strip whitespace from whitespace-only lines to normalize newlines
normalized_content = @content.gsub(/^[ \t]+$/m, '')
content_with_preserved_newlines = preserve_multiple_newlines(normalized_content)
renderer = Messages::MarkdownRenderers::PlainTextRenderer.new
doc = CommonMarker.render_doc(content_with_preserved_newlines, [:DEFAULT, :STRIKETHROUGH_DOUBLE_TILDE])
result = renderer.render(doc).gsub(/\n+\z/, '')
restore_multiple_newlines(result)
end
# Preserve multiple consecutive newlines (2+) by replacing them with placeholders
# Standard markdown treats 2 newlines as paragraph break which collapses to 1 newline, we preserve 2+
def preserve_multiple_newlines(content)
content.gsub(/\n{2,}/) do |match|
"{{PRESERVE_#{match.length}_NEWLINES}}"
end
end
# Restore multiple newlines from placeholders
def restore_multiple_newlines(content)
content.gsub(/\{\{PRESERVE_(\d+)_NEWLINES\}\}/) do |_match|
"\n" * Regexp.last_match(1).to_i
end
end
end