demarches-normaliennes/app/controllers/webhook_controller.rb

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class WebhookController < ActionController::Base
before_action :verify_signature!, only: :helpscout
def helpscout
email = params[:customer][:email]
user = User.find_by(email: email)
gestionnaire = Gestionnaire.find_by(email: email)
administrateur = Administrateur.find_by(email: email)
html = []
if user
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url = manager_user_url(user)
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html << link_to_manager(user, url)
end
if gestionnaire
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url = manager_gestionnaire_url(gestionnaire)
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html << link_to_manager(gestionnaire, url)
end
if administrateur
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url = manager_administrateur_url(administrateur)
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html << link_to_manager(administrateur, url)
end
if html.empty?
head :not_found
else
render json: { html: html.join('<br>') }
end
end
private
def link_to_manager(model, url)
"<a target='_blank' href='#{url}' rel='noopener'>#{model.model_name.human}##{model.id}</a>"
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end
def verify_signature!
if generate_body_signature(request.body.read) != request.headers['X-Helpscout-Signature']
request_http_token_authentication
end
end
def generate_body_signature(body)
Base64.strict_encode64(OpenSSL::HMAC.digest('sha1',
Rails.application.secrets.helpscout[:webhook_secret],
body))
end
end