# frozen_string_literal: true

class ShortUrl < ApplicationRecord
  belongs_to_creator
  belongs_to :api_key, optional: true

  validates :code, format: { with: /\A[A-Za-z_\-\d]+\z/ }, length: { maximum: 50 }, presence: true, uniqueness: true
  validates :creator_name, length: { maximum: 50 }
  validates :url, format: { with: /\A#{URI::DEFAULT_PARSER.make_regexp(%w[http https])}\z/ }, length: { maximum: 2048 }, presence: true
  before_validation :set_creator_name_if_blank

  before_create do
    self.code ||= SecureRandom.alphanumeric(8)
    self.url = url.strip
  end

  attr_accessor :no_webhook_messages, :skip_validations

  after_create :send_created, unless: :no_webhook_messages
  after_update :send_updated, unless: :no_webhook_messages
  after_destroy :send_deleted, unless: :no_webhook_messages

  def self.override(code, url)
    prev = find_by(code: code)
    return prev if prev&.url == url && prev&.management_code.nil?
    CurrentUser.as_system do
      prev&.update!(code: "#{code}_#{prev.id}")
      create!(
        code:                code,
        creator_name:        "YiffyAPI",
        creator_ua:          "YiffyAPI",
        url:                 url,
        no_webhook_messages: true,
      )
    end
  end

  def shorturl
    "https://yiff.rocks/#{code}"
  end

  def credit=(value)
    self.creator_name = value
  end

  def set_creator_name_if_blank
    self.creator_name = creator.name if creator_name.blank?
  end

  def serializable_hash(*)
    {
      code:       code,
      createdAt:  created_at,
      modifiedAt: updated_at,
      url:        url,
      pos:        id,
      credit:     creator_name || creator&.name,
      fullURL:    shorturl,
    }
  end

  module WebhookMethods
    GREEN = 0x008000
    YELLOW = 0xFFA500
    RED = 0xFF0000

    def execute(content)
      Websites.config.yiffyapi_apikey_shortener_webhook.execute({
        embeds: [content],
      })
    end

    def send_created
      execute({
        title:       "Short URL Created",
        description: <<~DESC,
          ID: **#{id}**
          Code: **#{code}**
          URL: #{url}
          IP: **#{creator_ip_addr}**
          User-Agent: **#{creator_ua}**
          Blame: #{blame}
        DESC
        color:       GREEN,
        timestamp:   Time.now.iso8601,
      })
    end

    def send_deleted
      execute({
        title:       "Short URL Deleted",
        description: <<~DESC,
          ID: **#{id}**
          Code: **#{code}**
          URL: #{url}
          Blame: #{blame}
        DESC
        color:       RED,
        timestamp:   Time.now.iso8601,
      })
    end

    def check_change(attr, changes)
      changes << "#{attr.to_s.titleize}: **#{send("#{attr}_before_last_save")}** -> **#{send(attr)}**" if send("saved_change_to_#{attr}?")
    end

    def send_updated
      changes = []
      check_change(:url, changes)
      check_change(:creator_name, changes)

      return if changes.empty?

      changes << "Blame: #{blame}"
      execute({
        title:       "Short URL Updated",
        description: changes.join("\n"),
        color:       YELLOW,
        timestamp:   Time.now.iso8601,
      })
    end

    def blame
      if CurrentUser.user.present?
        "<@#{CurrentUser.id}> (`#{CurrentUser.name}`)"
      elsif Rails.const_defined?("Console")
        "**Console**"
      elsif CurrentUser.ip_addr
        "**#{CurrentUser.ip_addr}"
      else
        "**Unknown**"
      end
    end
  end

  include WebhookMethods
end