#!/bin/bash -e

APT_PATH=/usr/bin    # Avoids problematic /usr/local/bin/apt on Linux Mint
CURR_VER="undefined"    # Ansible version you currently have installed
GOOD_VER="2.10.1"    # Orig for 'yum install [rpm]' & XO laptops (pip install)
# We install latest 'ansible-base' from PPA: (may be more recent than GOOD-VER)
# https://launchpad.net/~ansible/+archive/ubuntu/ansible
# https://launchpad.net/~ansible/+archive/ubuntu/ansible-2.10
# http://ppa.launchpad.net/ansible/ansible/ubuntu/pool/main/a/ansible-base/
# https://github.com/ansible/ansible/commits/stable-2.10/changelogs/CHANGELOG-v2.10.rst

export DEBIAN_FRONTEND=noninteractive
# Why 'noninteractive' appears needed:
# https://github.com/iiab/iiab/issues/564#issuecomment-347264985

echo -e "\n\nYOU ARE RUNNING: /opt/iiab/iiab/scripts/ansible (TO INSTALL ANSIBLE)\n"
#echo -e 'Alternative:     /opt/iiab/iiab/scripts/ansible-2.9.x ("Slow Food")\n'

echo -e "RECOMMENDED PREREQUISITES:"
echo -e "(1) Verify you're online"
echo -e "(2) Remove all prior versions of Ansible using..."
echo -e "    'apt purge ansible-base'  and/or  'pip uninstall ansible-base'  and/or"
echo -e "    'apt purge ansible'       and/or  'pip uninstall ansible'"
echo -e "(3) Remove all lines containing 'ansible' from..."
echo -e "    /etc/apt/sources.list and /etc/apt/sources.list.d/*\n"

echo -e "IIAB INSTALL INSTRUCTIONS: (OLDER, MANUAL APPROACH)"
echo -e "https://github.com/iiab/iiab/wiki/IIAB-Installation#do-everything-from-scratch\n"

if [ $(command -v ansible) ]; then    # "command -v" is POSIX compliant; also catches built-in commands like "cd"
    CURR_VER=`ansible --version | head -1 | awk '{print $2}'`    # To match iiab-install.  Was: CURR_VER=`ansible --version | head -n 1 | cut -f 2 -d " "`
    echo -e "CURRENTLY INSTALLED ANSIBLE: $CURR_VER -- LET'S TRY TO UPGRADE IT!"
else
    echo -e "ANSIBLE NOT FOUND ON THIS COMPUTER -- LET'S TRY TO INSTALL IT!"
fi
echo -e "(Internet-in-a-Box requests ansible-base $GOOD_VER or higher)\n"

if [ ! -f /etc/debian_version ]; then    # e.g. Raspbian, Ubuntu, Mint & Debian
    echo -e "\nEXITING: /etc/debian_version FILE NOT FOUND.  Linux OS support info here:"
    echo -e "           https://github.com/iiab/iiab/wiki/IIAB-Platforms\n"
    exit 1
fi

echo -e "\napt update; install dirmngr; PPA to /etc/apt/sources.list.d/iiab-ansible.list\n"
$APT_PATH/apt update
$APT_PATH/apt -y install dirmngr
echo "deb http://ppa.launchpad.net/ansible/ansible/ubuntu bionic main" \
     > /etc/apt/sources.list.d/iiab-ansible.list

# 2020-08-20: TEMP WORKAROUND (REVERT TO ANSIBLE 2.9.6) MITIGATING #2481 (Ansible 2.9.12 and 2.10.0's 666-TO-600 file permissions problem). This installs 2.9.6-1ppa~disco onto RaspiOS, from https://launchpad.net/~ansible/+archive/ubuntu/ansible
#echo "deb http://ppa.launchpad.net/ansible/ansible/ubuntu disco main" \
    #    > /etc/apt/sources.list.d/iiab-ansible.list

echo -e '\nIF YOU FACE ERROR "signatures couldn'"'"'t be verified because the public key is not available" THEN REPEATEDLY RE-RUN "sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 93C4A3FD7BB9C367"\n'
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 93C4A3FD7BB9C367
echo -e 'PPA source "deb http://ppa.launchpad.net/ansible/ansible/ubuntu bionic main"'
echo -e "successfully saved to /etc/apt/sources.list.d/iiab-ansible.list\n"
echo -e "IF *OTHER* ANSIBLE SOURCES APPEAR BELOW, PLEASE MANUALLY REMOVE THEM TO"
echo -e 'ENSURE ANSIBLE UPDATES CLEANLY: (then re-run this script to be sure!)\n'
grep '^deb .*ansible' /etc/apt/sources.list /etc/apt/sources.list.d/*.list | grep -v '^/etc/apt/sources.list.d/iiab-ansible.list:' || true    # Override bash -e (instead of aborting at 1st error)

echo -e "\napt update; apt install ansible-base and python3 dependencies explained at:"
echo -e "https://github.com/iiab/iiab/tree/master/scripts/ansible.md\n"
$APT_PATH/apt update
$APT_PATH/apt -y --allow-downgrades install ansible-base \
	      python3-pymysql python3-psycopg2 python3-passlib python3-pip \
	      python3-setuptools python3-venv virtualenv

# IIAB requires these 2 Ansible Collections: (with ansible-base 2.10.0 or higher)
ansible-galaxy collection install community.general    # Re-running these
ansible-galaxy collection install community.mysql      # appears to be safe!?

echo -e "\nSUCCESS: verify Ansible using 'ansible --version' and/or 'apt -a list ansible-base'\n\n"

# TEMPORARILY USE ANSIBLE 2.4.4 (REMOVE IT WITH "pip uninstall ansible")
#pip install ansible==2.4.4

# TEMPORARILY USE ANSIBLE 2.4.2 DUE TO 2.4.3 MEMORY BUG. DETAILS @ https://github.com/iiab/iiab/issues/669
#echo "Install http://download.iiab.io/packages/ansible_2.4.2.0-1ppa~xenial_all.deb"
#cd /tmp
#wget http://download.iiab.io/packages/ansible_2.4.2.0-1ppa~xenial_all.deb
#apt -y --allow-downgrades install ./ansible_2.4.2.0-1ppa~xenial_all.deb

# Needed?
mkdir -p /etc/ansible
echo -e '[local]\nlocalhost\n' > /etc/ansible/hosts