## Code Context

**Query:** enterprise features, SLA policy, applied SLA, SLA event, audit log, custom role, company, SAML settings, agent capacity, call, voice通话

### Entry Points

- **AccountSamlSettingsPolicy** (class) - enterprise/app/policies/account_saml_settings_policy.rb:1
- **Company** (class) - enterprise/app/models/company.rb:23
- **AddAgentCapacityPolicyToAccountUsers** (class) - db/migrate/20250806140004_add_agent_capacity_policy_to_account_users.rb:3

### Related Symbols

- app/policies/application_policy.rb: ApplicationPolicy:1
- app/models/application_record.rb: ApplicationRecord:1
- enterprise/app/policies/account_saml_settings_policy.rb: show?:2, create?:6, update?:10, destroy?:14
- enterprise/app/models/company.rb: record_activity_at!:63, prepare_jsonb_attributes:71, fetch_favicon:76
- app/jobs/migration/backfill_companies_contacts_count_job.rb: perform:4

### Code

#### AccountSamlSettingsPolicy (enterprise/app/policies/account_saml_settings_policy.rb:1)

```ruby
class AccountSamlSettingsPolicy < ApplicationPolicy
  def show?
    @account_user.administrator?
  end

  def create?
    @account_user.administrator?
  end

  def update?
    @account_user.administrator?
  end

  def destroy?
    @account_user.administrator?
  end
end
```

#### Company (enterprise/app/models/company.rb:23)

```ruby
class Company < ApplicationRecord
  include Avatarable

  ACTIVITY_ROLLUP_INTERVAL = 5.minutes

  validates :account_id, presence: true
  validates :name, presence: true, length: { maximum: Limits::COMPANY_NAME_LENGTH_LIMIT }
  validates :domain, allow_blank: true, format: {
    with: /\A[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?)+\z/,
    message: I18n.t('errors.companies.domain.invalid')
  }
  validates :domain, uniqueness: { scope: :account_id }, if: -> { domain.present? }
  validates :description, length: { maximum: Limits::COMPANY_DESCRIPTION_LENGTH_LIMIT }
  validates :custom_attributes, jsonb_attributes_length: true

  belongs_to :account
  has_many :contacts, dependent: :nullify
  before_validation :prepare_jsonb_attributes
  after_create_commit :fetch_favicon, if: -> { domain.present? }

  scope :ordered_by_name, -> { order(:name) }
  scope :search_by_name_or_domain, lambda { |query|
    where('name ILIKE :search OR domain ILIKE :search', search: "%#{query.strip}%")
  }

  scope :order_on_contacts_count, lambda { |direction|
    order(
      Arel::Nodes::SqlLiteral.new(
        sanitize_sql_for_order("\"companies\".\"contacts_count\" #{direction} NULLS LAST")
      )
    )
  }
  scope :order_on_last_activity_at, lambda { |direction|
    order(
      Arel::Nodes::SqlLiteral.new(
        sanitize_sql_for_order("\"companies\".\"last_activity_at\" #{direction} NULLS LAST")
      )
    )
  }

  def record_activity_at!(activity_at)
    
// ... truncated ...
```

#### AddAgentCapacityPolicyToAccountUsers (db/migrate/20250806140004_add_agent_capacity_policy_to_account_users.rb:3)

```ruby
class AddAgentCapacityPolicyToAccountUsers < ActiveRecord::Migration[7.1]
  def change
    add_reference :account_users, :agent_capacity_policy, null: true, index: true
  end
end
```

#### show? (enterprise/app/policies/account_saml_settings_policy.rb:2)

```ruby
  def show?
    @account_user.administrator?
  end
```

#### create? (enterprise/app/policies/account_saml_settings_policy.rb:6)

```ruby
  def create?
    @account_user.administrator?
  end
```

#### update? (enterprise/app/policies/account_saml_settings_policy.rb:10)

```ruby
  def update?
    @account_user.administrator?
  end
```

#### destroy? (enterprise/app/policies/account_saml_settings_policy.rb:14)

```ruby
  def destroy?
    @account_user.administrator?
  end
```

#### record_activity_at! (enterprise/app/models/company.rb:63)

```ruby
  def record_activity_at!(activity_at)
    return if last_activity_at.present? && last_activity_at > activity_at - ACTIVITY_ROLLUP_INTERVAL

    update!(last_activity_at: activity_at)
  end
```

#### prepare_jsonb_attributes (enterprise/app/models/company.rb:71)

```ruby
  def prepare_jsonb_attributes
    self.additional_attributes = {} unless additional_attributes.is_a?(Hash)
    self.custom_attributes = {} unless custom_attributes.is_a?(Hash)
  end
```

#### fetch_favicon (enterprise/app/models/company.rb:76)

```ruby
  def fetch_favicon
    Avatar::AvatarFromFaviconJob.set(wait: 5.seconds).perform_later(self)
  end
```

#### perform (app/jobs/migration/backfill_companies_contacts_count_job.rb:4)

```ruby
  def perform
    return unless ChatwootApp.enterprise?

    Company.find_in_batches(batch_size: 100) do |company_batch|
      company_batch.each do |company|
        Company.reset_counters(company.id, :contacts)
      end
    end
  end
```

#### find_or_create_company (enterprise/app/jobs/migration/company_account_batch_job.rb:32)

```ruby
  def find_or_create_company(contact, account)
    domain = extract_domain(contact.email)
    company_name = derive_company_name(contact, domain)

    Company.find_or_create_by!(account: account, domain: domain) do |company|
      company.name = company_name
    end
  rescue ActiveRecord::RecordNotUnique
    # Race condition: Another job created it between our check and create
    # just find the one that was created

    Company.find_by(account: account, domain: domain)
  end
```

#### associate_company_from_email (enterprise/app/services/contacts/company_association_service.rb:2)

```ruby
  def associate_company_from_email(contact)
    return nil if skip_association?(contact)

    company = find_or_create_company(contact)
    if company
      # rubocop:disable Rails/SkipsModelValidations
      # Using update_column and increment_counter to avoid triggering callbacks while maintaining counter cache
      contact.update_column(:company_id, company.id)
      Company.increment_counter(:contacts_count, company.id)
      # rubocop:enable Rails/SkipsModelValidations
      company.record_activity_at!(contact.last_activity_at) if contact.last_activity_at.present?
    end
    company
  end
```

#### find_or_create_company (enterprise/app/services/contacts/company_association_service.rb:29)

```ruby
  def find_or_create_company(contact)
    domain = extract_domain(contact.email)
    company_name = derive_company_name(contact, domain)

    Company.find_or_create_by!(account: contact.account, domain: domain) do |company|
      company.name = company_name
    end
  rescue ActiveRecord::RecordNotUnique
    # If another process created it first, just find that
    Company.find_by(account: contact.account, domain: domain)
  end
```

#### change (db/migrate/20250806140004_add_agent_capacity_policy_to_account_users.rb:4)

```ruby
  def change
    add_reference :account_users, :agent_capacity_policy, null: true, index: true
  end
```

#### ApplicationPolicy (app/policies/application_policy.rb:1)

```ruby
class ApplicationPolicy
  attr_reader :user_context, :user, :record, :account, :account_user

  def initialize(user_context, record)
    @user_context = user_context
    @user = user_context[:user]
    @account = user_context[:account]
    @account_user = user_context[:account_user]
    @record = record
  end

  def index?
    false
  end

  def show?
    scope.exists?(id: record.id)
  end

  def create?
    false
  end

  def new?
    create?
  end

  def update?
    false
  end

  def edit?
    update?
  end

  def destroy?
    false
  end

  def scope
    Pundit.policy_scope!(user_context, record.class)
  end

  class Scope
    attr_reader :user_context, :user, :scope, :account, :account_user

    def initialize(user_context, scope)
      @user_context = user_context
      @user = user_context[:user]
      @account = user_context[:account]
      @account_user = user_context[:account_user]
      @scope = scope
    end

    def resolve
      scope
    end
  end
end
```

#### ApplicationRecord (app/models/application_record.rb:1)

```ruby
class ApplicationRecord < ActiveRecord::Base
  include Events::Types
  self.abstract_class = true

  before_validation :validates_column_content_length

  # the models that exposed in email templates through liquid
  def droppables
    %w[Account Channel Conversation Inbox User Message]
  end

  # ModelDrop class should exist in app/drops
  def to_drop
    return unless droppables.include?(self.class.name)

    "#{self.class.name}Drop".constantize.new(self)
  end

  private

  # Generic validation for all columns of type string and text
  # Validates the length of the column to prevent DOS via large payloads
  # if a custom length validation is already present, skip the validation
  def validates_column_content_length
    self.class.columns.each do |column|
      check_and_validate_content_length(column) if column_of_type_string_or_text?(column)
    end
  end

  def column_of_type_string_or_text?(column)
    %i[string text].include?(column.type)
  end

  def check_and_validate_content_length(column)
    length_validator = self.class.validators_on(column.name).find { |v| v.kind == :length }
    validate_content_length(column) if length_validator.blank?
  end

  def validate_content_length(column)
    max_length = column.type == :text ? 20_000 : 255
    return if self[column.name].nil? || self[column.name].length <= max_length

    errors.add(column.name.to_sym, "is too long (maximum is #{max_length} characters)")
  end

  def normalize_empty_string_to_nil(attrs = [])
    attrs
// ... truncated ...
```