protonmail-bridge-docker/docker/auto-login.exp

#!/usr/bin/expect -f

set timeout 15;

spawn proton-bridge -cli {*}$argv ;

# wait for inital prompt
expect {
  ">>> " {
    # protonmail-bridge started without error, do nothing
  }

  timeout {
    puts "Timed out"
    exit 2
  }
}

send "login\n"
expect {
  "Username: " {
    # login start, enter username
  }

  timeout {
    puts "Timed out"
    exit 2
  }
}

send "$::env(PROTONMAIL_USERNAME)\n"
expect {
  "Password: " {
    # username entered, enter password
  }

  timeout {
    puts "Timed out"
    exit 2
  }
}

stty -echo
sleep 1
send "$::env(PROTONMAIL_PASSWORD)\n"
stty echo
expect {
  "was added successfully." {
    # login ok
  }

  "Two factor code: " {
    # 2FA enabled, enter OTP
    if ![info exists ::env(PROTONMAIL_OTP)] {
      puts "\n2FA enabled but PROTONMAIL_OTP is not set. Exiting"
      exit 1
    }
    send "$::env(PROTONMAIL_OTP)\n"
    expect {
      "was added successfully." {
        # login ok
      }

      "Server error" {
        # login failed
        exit 1
      }

      timeout {
        puts "Timed out"
        exit 2
      }
    }
  }

  "Server error" {
    # login failed
    exit 1
  }

  timeout {
    puts "Timed out"
    exit 2
  }
}

send "info\n"
expect {
  "Configuration for " {
    # successfully got info. Wait for printing
    sleep 1
  }

  timeout {
    puts "Timed out"
    exit 2
  }
}