#!/usr/bin/env expect

# Read the password string
set pass [lindex $argv 0]

# Check if password was provided
if { $pass == "" }  {
  puts "Usage: $argv0 <password>"
  exit 1
}

# Disable output
log_user 0

# Execute password hashing script
spawn docker exec -it matrix-synapse /usr/local/bin/hash_password -c /data/homeserver.yaml
expect "Password: "
send "$pass\r"
expect "Confirm password: "
send "$pass\r"
expect "%"

# Save the hash output to a variable
set output $expect_out(buffer)

# Trim the whitespace
regexp {\S+} $output passwordHash

# Output the password hash
puts -nonewline stdout $passwordHash
close stdout