# frozen_string_literal: true

module DiscourseChatIntegration::Provider::WebexProvider
  PROVIDER_NAME = "webex".freeze
  PROVIDER_ENABLED_SETTING = :chat_integration_webex_enabled
  CHANNEL_PARAMETERS = [
    { key: "name", regex: '^\S+$', unique: true },
    { key: "webhook_url",
      regex: '^https:\/\/webexapis\.com\/v1\/webhooks\/incoming\/[A-Za-z0-9\-@\/]+\S+$',
      unique: true,
      hidden: true }
  ]

  def self.trigger_notification(post, channel, rule)
    message = get_message(post)
    uri = URI(channel.data['webhook_url'])

    http = Net::HTTP.new(uri.host, uri.port)
    http.use_ssl = (uri.scheme == 'https')

    req = Net::HTTP::Post.new(uri, 'Content-Type' => 'application/json')
    req.body = message.to_json
    response = http.request(req)

    unless response.kind_of? Net::HTTPSuccess
      if response.body.include?('Invalid webhook URL')
        error_key = 'chat_integration.provider.webex.errors.invalid_channel'
      else
        error_key = nil
      end
      raise ::DiscourseChatIntegration::ProviderError.new info: { error_key: error_key,
                                                                  request: req.body,
                                                                  response_code: response.code,
                                                                  response_body: response.body }
    end

  end

  def self.get_message(post)
    display_name = "@#{post.user.username}"
    full_name = post.user.name || ""

    topic = post.topic

    category = ''
    if topic.category&.uncategorized?
      category = "[#{I18n.t('uncategorized_category_name')}]"
    elsif topic.category
      category = (topic.category.parent_category) ?
               "[#{topic.category.parent_category.name}/#{topic.category.name}]" : "[#{topic.category.name}]"
    end

    markdown = "**#{topic.title}**: #{category}"
    markdown += " #{topic.tags.map(&:name).join(', ')} " if topic.tags.present?
    markdown += "(#{post.full_url}) from #{full_name} (#{display_name}):\n"
    markdown += post.excerpt(SiteSetting.chat_integration_webex_excerpt_length,
                             text_entities: true,
                             strip_links: true,
                             remap_emoji: true
                            )

    { "markdown": markdown }
  end

end