#!/bin/bash

# Lists IIAB Apps set to install BUT not yet installed (according to /etc/iiab/iiab_state.yml)

iiab_var_value() {
    v1=$(grep "^$1:\s" /opt/iiab/iiab/vars/default_vars.yml | tail -1 | sed "s/^$1:\s\+//; s/#.*//; s/\s*$//; s/^\(['\"]\)\(.*\)\1$/\2/")
    v2=$(grep "^$1:\s" /etc/iiab/local_vars.yml | tail -1 | sed "s/^$1:\s\+//; s/#.*//; s/\s*$//; s/^\(['\"]\)\(.*\)\1$/\2/")
    [[ $v2 != "" ]] && echo $v2 || echo $v1    # [ "$v2" ] ALSO WORKS
}

# https://askubuntu.com/questions/1250974/user-root-cant-write-to-file-in-tmp-owned-by-someone-else-in-20-04-but-can-in
# https://unix.stackexchange.com/questions/503111/group-permissions-for-root-not-working-in-tmp
[[ $(id -un) == "root" ]] &&
    rm -f /tmp/iiab-apps-list /tmp/iiab-apps-to-be-installed

# 2022-06-18: 40 apps (list not quite complete)
#grep -l _installed: /opt/iiab/iiab/roles/*/tasks/install.yml | cut -d/ -f6 > /tmp/iiab-apps-list

# 2022-06-18: 46 apps (list incorrect) -- adds these 6: iiab_admin, minetest, network (HAS NO _installed VAR), pylibs, www_base, www_options
#grep -l _installed: /opt/iiab/iiab/roles/*/tasks/* | cut -d/ -f6 | sort | uniq > /tmp/iiab-apps-list

# 2022-06-18: 50 apps (list long but ok!) -- adds these 10: dansguardian, dhcpd, iiab_admin, minetest, named, pylibs, squid, wondershaper, www_base, www_options
grep -hro '[A-Za-z_][A-Za-z_]*_installed: True' --exclude-dir=0-DEPRECATED-ROLES /opt/iiab/iiab/roles | sed 's/_installed: True$//' | sort | uniq > /tmp/iiab-apps-list

# Non-root CANNOT rm files from /tmp, but CAN write to them (unlike root!!)
# This ALSO creates the file (useful when "Apps2B" == 0, for iiab-summary etc)
truncate -s 0 /tmp/iiab-apps-to-be-installed

# So other (non-root) users CAN later write to these, even if they CAN'T chmod!
chmod 777 /tmp/iiab-apps-list /tmp/iiab-apps-to-be-installed 2>/dev/null

while read app; do
    if [[ $app == "calibre-web" ]]; then
        app=calibreweb
    elif [[ $app == "osm-vector-maps" ]]; then
        app=osm_vector_maps
    fi

    # echo ${app}_install: $(iiab_var_value ${app}_install)

    if [[ $(iiab_var_value ${app}_install) =~ ^[Tt]rue$ ]] && ! grep -q "${app}_installed: True" /etc/iiab/iiab_state.yml; then
        echo $app | tee -a /tmp/iiab-apps-to-be-installed
    fi
done < /tmp/iiab-apps-list