mbsync.rb


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class MbsyncAccountConfig
  def initialize account, config
    @config = config
    @account = account
    make_imap_account
    make_imap_store
    make_maildir_store
    make_channel
  end

  def make_imap_account
    @imap_account = <<~END.chomp
      IMAPAccount #{@account['name']}
      Host #{@account['imap']}
      User #{@account['email']}
      Port 993
      SSLType IMAPS
      PassCmd "pass show #{@account['pass_tag'] || @account['name']}"
      CertificateFile /etc/ssl/certs/ca-certificates.crt
      AuthMechs *
    END
  end

  def make_imap_store
    @imap_store = <<~END.chomp
      IMAPStore #{@account['name']}-remote
      Account #{@account['name']}
    END
  end

  def make_maildir_store
    @maildir_store = <<~END.chomp
      MaildirStore #{@account['name']}-local
      Path #{@config['mail_directory']}/#{@account['name']}/
      Inbox #{@config['mail_directory']}/#{@account['name']}/INBOX
      Subfolders Verbatim
      Flatten .
    END
  end

  def make_channel
    @channel = <<~END.chomp
      Channel #{@account['name']}
      Master :#{@account['name']}-remote:
      Slave :#{@account['name']}-local:
      Patterns * !"[Gmail]/All Mail" !"[Gmail]/Wszystkie"
      Create Slave
      SyncState *
      ExpireUnread yes
      MaxMessages #{@account['max_messages'] || '0'}
    END
  end

  def to_s
    <<~END.chomp
      # BEGIN profile generated by mmm
      #{@imap_account}

      #{@imap_store}

      #{@maildir_store}

      #{@channel}
      # END profile generated by mmm
    END
  end
end

def make_mbsync_config config
  accounts = config['accounts'].map do |account_config|
    account = MbsyncAccountConfig.new account_config, config
    account.to_s
  end

  accounts.join "\n\n"
end