#!/bin/bash -x
# Installs IIAB. "bash -x" (xtrace) is like -v (verbose) but expands commands.

# 1. RUN: "sudo su -" then "raspi-config" to set "Localisation Options"
# 2. OPTIONAL: "passwd pi; touch /boot/ssh; reboot" to ssh in immediately
# 3. RUN THIS SCRIPT: curl download.iiab.io/6.4/rpi/load.txt | bash
# 4. REBOOTS AUTOMATICALLY WHEN DONE (about an hour later) which
#    sets the hostname, while improving RTC settings + memory mgmt

set -e                    # to exit on error (avoids snowballing)

tune2fs -m 1 /dev/mmcblk0p2
# Above changes reserve disk space from ~5% to 1%

export DEBIAN_FRONTEND=noninteractive
apt update
apt -y dist-upgrade
apt -y clean
# Above updates Raspbian for security especially

apt -y install git ansible
# Above installs a more future-proof Ansible 2.2.1+, and git for Raspbian Lite
sed -i 's/StrictVersion/LooseVersion/g' /usr/lib/python2.7/dist-packages/ansible/modules/core/web_infrastructure/htpasswd.py
# ABOVE APPLIES TEMPORARY PATCH https://github.com/ansible/ansible/pull/20202
# needed by munin until Ansible 2.3.2 or 2.4.0, to overcome Ansible bug:
#    TASK [munin : Create admin user] ********************************
#    fatal: [127.0.0.1]: FAILED! => {"changed": false, "failed": true,
#    "msg": "invalid version number '1.7.0.post20170423015547'"}

mkdir -p /opt/iiab
cd /opt/iiab/
git clone https://github.com/iiab/iiab --depth 1
git clone https://github.com/iiab/iiab-admin-console --depth 1
git clone https://github.com/iiab/iiab-menu --depth 1
git clone https://github.com/iiab/iiab-factory --depth 1

cd /opt/iiab/iiab/vars/
if [ -f local_vars.yml ]; then
    echo "ERROR: Plz move /opt/iiab/iiab/vars/local_vars.yml to proceed." >&2
    exit 1
fi
wget http://download.iiab.io/6.4/rpi/local_vars.yml
# Above assumes a virgin RPi system (wget WON'T overwrite existing files)

# In general please examine local_vars.yml carefully (and modify as nec)
# before running Ansible (below, which can take ~2 hours the first time!)

# NOTE: you can change many/most settings after install too, using the
# Admin Console (http://box/admin) as documented at: http://FAQ.IIAB.IO

cd /opt/iiab/iiab/
./runansible
# TRY TO RERUN THE ABOVE LINE IF IT FAILS (due to networking glitches etc?)

cd /opt/iiab/iiab-admin-console/
./install
# Installs Admin Console and runs iiab-get-kiwix-cat to download Kiwix catalog

cd /opt/iiab/iiab-menu/
./cp-menus
# Installs Dynamic Menuing for /library/www/html/home/index.html

iiab-make-kiwix-lib
# Rebuilds local library.xml in case ZIM files added to /library/zims/content

export KALITE_HOME=/library/ka-lite
kalite manage generate_zone
# Register with KA Lite - just the anonymous registration
kalite manage retrievecontentpack download en
# Get KA Lite English language pack (slow download!)

reboot