# frozen_string_literal: true

require "action_dispatch"
require "active_support/core_ext/time"
require "json"

module ExceptionNotifier
  class TeamsNotifier < BaseNotifier
    include ExceptionNotifier::BacktraceCleaner

    class MissingController
      def method_missing(*args, &block)
      end

      def respond_to_missing?(*args)
      end
    end

    attr_accessor :httparty

    def initialize(options = {})
      super
      @default_options = options
      @httparty = HTTParty
    end

    def call(exception, options = {})
      @options = options.merge(@default_options)
      @exception = exception
      @backtrace = exception.backtrace ? clean_backtrace(exception) : nil

      @env = @options.delete(:env)

      @application_name = @options.delete(:app_name) || rails_app_name
      @gitlab_url = @options.delete(:git_url)
      @jira_url = @options.delete(:jira_url)

      @webhook_url = @options.delete(:webhook_url)
      raise ArgumentError, "You must provide 'webhook_url' parameter." unless @webhook_url

      if @env.nil?
        @controller = @request_items = nil
      else
        @controller = @env["action_controller.instance"] || MissingController.new
        @additional_exception_data = @env["exception_notifier.exception_data"]
        request = ActionDispatch::Request.new(@env)

        @request_items = {url: request.original_url,
                          http_method: request.method,
                          ip_address: request.remote_ip,
                          parameters: request.filtered_parameters,
                          timestamp: Time.current}

      end

      payload = message_text

      @options[:body] = payload.to_json
      @options[:headers] ||= {}
      @options[:headers]["Content-Type"] = "application/json"
      @options[:debug_output] = $stdout

      @httparty.post(@webhook_url, @options)
    end

    private

    def message_text
      text = {
        "@type" => "MessageCard",
        "@context" => "http://schema.org/extensions",
        "summary" => "#{@application_name} Exception Alert",
        "title" => "⚠️ Exception Occurred in #{env_name} ⚠️",
        "sections" => [
          {
            "activityTitle" => activity_title,
            "activitySubtitle" => @exception.message.to_s
          }
        ],
        "potentialAction" => []
      }

      text["sections"].push details
      text["potentialAction"].push gitlab_view_link unless @gitlab_url.nil?
      text["potentialAction"].push gitlab_issue_link unless @gitlab_url.nil?
      text["potentialAction"].push jira_issue_link unless @jira_url.nil?

      text
    end

    def details
      details = {
        "title" => "Details",
        "facts" => []
      }

      details["facts"].push message_request unless @request_items.nil?
      details["facts"].push message_backtrace unless @backtrace.nil?
      details["facts"].push additional_exception_data unless @additional_exception_data.nil?
      details
    end

    def activity_title
      errors_count = @options[:accumulated_errors_count].to_i

      "#{(errors_count > 1) ? errors_count : "A"} *#{@exception.class}* occurred" +
        (@controller ? " in *#{controller_and_method}*." : ".")
    end

    def message_request
      {
        "name" => "Request",
        "value" => "#{hash_presentation(@request_items)}\n  "
      }
    end

    def message_backtrace(size = 3)
      text = []
      size = (@backtrace.size < size) ? @backtrace.size : size
      text << "```"
      size.times { |i| text << "* " + @backtrace[i] }
      text << "```"

      {
        "name" => "Backtrace",
        "value" => text.join("  \n").to_s
      }
    end

    def additional_exception_data
      {
        "name" => "Data",
        "value" => "`#{@additional_exception_data}`\n  "
      }
    end

    def gitlab_view_link
      {
        "@type" => "ViewAction",
        "name" => "\u{1F98A} View in GitLab",
        "target" => [
          "#{@gitlab_url}/#{@application_name}"
        ]
      }
    end

    def gitlab_issue_link
      link = [@gitlab_url, @application_name, "issues", "new"].join("/")
      params = {
        "issue[title]" => ["[BUG] Error 500 :",
          controller_and_method,
          "(#{@exception.class})",
          @exception.message].compact.join(" ")
      }.to_query

      {
        "@type" => "ViewAction",
        "name" => "\u{1F98A} Create Issue in GitLab",
        "target" => [
          "#{link}/?#{params}"
        ]
      }
    end

    def jira_issue_link
      {
        "@type" => "ViewAction",
        "name" => "🐞 Create Issue in Jira",
        "target" => [
          "#{@jira_url}/secure/CreateIssue!default.jspa"
        ]
      }
    end

    def controller_and_method
      if @controller
        "#{@controller.controller_name}##{@controller.action_name}"
      else
        ""
      end
    end

    def hash_presentation(hash)
      text = []

      hash.each do |key, value|
        text << "* **#{key}** : `#{value}`"
      end

      text.join("  \n")
    end

    def rails_app_name
      return unless defined?(Rails) && Rails.respond_to?(:application)

      if ::Gem::Version.new(Rails.version) >= ::Gem::Version.new("6.0")
        Rails.application.class.module_parent_name.underscore
      else
        Rails.application.class.parent_name.underscore
      end
    end

    def env_name
      Rails.env if defined?(Rails) && Rails.respond_to?(:env)
    end
  end
end