#!/bin/sh

: ${asterisk_public_fqdn:='pbx.example.com'}
: ${asterisk_public_ip:="$BOXCONF_DEFAULT_IPV4"}
: ${asterisk_from_email:="asterisk-noreply@${email_domain}"}
: ${asterisk_sip_domain:="${email_domain}"}
: ${asterisk_locale:='en_US.UTF-8'}
: ${asterisk_timezone:='America/New_York'}
: ${asterisk_default_mailbox_password:='1234'}

# asterisk_mailboxes='1001 1002'
# asterisk_mailbox_1001_name='John Doe'
# asterisk_mailbox_1001_email='johndoe@example.com'
#
# asterisk_trunks='upstream1 upstream2'
# asterisk_trunk_upstream1_username=myusername
# asterisk_trunk_upstream1_password=changeme
# asterisk_trunk_upstream1_context=from-pstn
# asterisk_trunk_upstream1_proto=tcp
# asterisk_trunk_upstream1_remote='server.example.com:5060'
#
# asterisk_exts='1001 1002'
# asterisk_ext_1001_password=changeme
# asterisk_ext_1001_context=from-internal
# asterisk_ext_1001_mailbox=1001
# asterisk_ext_1001_cid_name='Bob Office'
#
# asterisk_queues=home
# asterisk_queue_home_stragegy=ringall
# asterisk_queue_home_timeout=30
# asterisk_queue_home_retry=1
# asterisk_queue_home_members='1001 1002'

asterisk_public_tls_cert="${acme_cert_dir}/asterisk.crt"
asterisk_public_tls_key="${acme_cert_dir}/asterisk.key"
asterisk_conf_dir=/usr/local/etc/asterisk
asterisk_sound_dir=/usr/local/share/asterisk/sounds/en
asterisk_g722_tarball=https://downloads.asterisk.org/pub/telephony/sounds/asterisk-core-sounds-en-g722-current.tar.gz
asterisk_db_dir=/var/db/asterisk
asterisk_user=asterisk

# Install packages.
pkg install -y \
  asterisk18 \
  ca_root_nss

# Create ZFS dataset for Asterisk DB.
create_dataset -o "mountpoint=${asterisk_db_dir}" "${state_dataset}/asterisk"
zfs set \
  com.sun:auto-snapshot:daily=true \
  com.sun:auto-snapshot:weekly=true \
  "${state_dataset}/asterisk"
install_directory -o "$asterisk_user" -g "$asterisk_user" -m 0755 "$asterisk_db_dir"

# Download G722 sounds.
if ! [ -f "${asterisk_sound_dir}/hello-world.g722" ]; then
  curl -fL "$asterisk_g722_tarball" | tar xf - -C "$asterisk_sound_dir"
fi

# Generate asterisk configuration.
install_file -m 0644 \
  "${asterisk_conf_dir}/extensions.conf" \
  "${asterisk_conf_dir}/logger.conf" \
  "${asterisk_conf_dir}/voicemail.conf"

install_template -m 0644 \
  "${asterisk_conf_dir}/voicemail.conf" \
  "${asterisk_conf_dir}/pjsip.conf" \
  "${asterisk_conf_dir}/queues.conf" \
  "${asterisk_conf_dir}/rtp.conf"

install_template -m 0640 -g "$asterisk_user" \
  "${asterisk_conf_dir}/pjsip_wizard.conf"

# Acquire public TLS certificate.
install_template -m 0600 /usr/local/etc/sudoers.d/acme
acme_install_certificate \
  -g "$asterisk_user" \
  -r 'sudo service asterisk reload' \
  asterisk \
  "$asterisk_public_fqdn"

# Enable and start asterisk.
sysrc -v asterisk_enable=YES
service asterisk restart