eminuxCRM/app/controllers/mail_templates_controller.rb

class MailTemplatesController < ApplicationController
  before_action :require_current_project!
  before_action :set_template, only: %i[edit update destroy]

  def index
    @page_title = "Template email"
    @mail_templates = MailTemplate.for_project(current_project)
  end

  def new
    @page_title = "Nuovo template"
    @mail_template = MailTemplate.new(project: current_project, body_html: default_html, subject: "MatchLiveTV per {{societa}}")
  end

  def create
    @mail_template = MailTemplate.new(template_params)
    @mail_template.project ||= current_project
    if @mail_template.save
      redirect_to mail_templates_path, notice: "Template salvato."
    else
      @page_title = "Nuovo template"
      render :new, status: :unprocessable_entity
    end
  end

  def edit
    @page_title = "Modifica template"
  end

  def update
    if @mail_template.update(template_params)
      redirect_to mail_templates_path, notice: "Template aggiornato."
    else
      @page_title = "Modifica template"
      render :edit, status: :unprocessable_entity
    end
  end

  def destroy
    if @mail_template.mailings.exists? || @mail_template.mailings_as_b.exists?
      redirect_to mail_templates_path, alert: "Template già usato in un invio: non si elimina, puoi solo modificarlo."
      return
    end

    @mail_template.destroy!
    redirect_to mail_templates_path, notice: "Template eliminato."
  end

  private

  def set_template
    @mail_template = MailTemplate.for_project(current_project).find(params[:id])
  end

  def template_params
    params.require(:mail_template).permit(:name, :subject, :body_html)
  end

  def default_html
    <<~HTML
      <p>Ciao {{contatto_nome}},</p>
      <p>scriviamo a <strong>{{societa}}</strong> ({{regione}}) per presentarti MatchLiveTV.</p>
      <p>Possiamo aiutarvi a trasmettere le giovanili in modo semplice.</p>
      <p>A presto,<br>Il team MatchLiveTV</p>
    HTML
  end
end