#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=2

if $dns_over_https; then
    dns_over_https="true"
    # no need to open the ports, as they were opened at the 'Provisioning ports' step
    ynh_print_info --message="DoH and DoQ ports are already closed."
else
    dns_over_https="false"
    # if dns_over_https is false, we need to close ports,
    # as they were opened at the 'Provisioning ports' step
    ynh_print_info --message="Closing DoH and DoQ ports..."
    ynh_exec_warn_less yunohost firewall disallow Both "$port_dns_over_http"
    ynh_exec_warn_less yunohost firewall disallow UDP "$port_dns_over_quic"
    ynh_exec_warn_less yunohost firewall reload
fi

ynh_app_setting_set --app="$app" --key=dns_over_https --value="$dns_over_https"

if $open_port_53; then
    open_port_53="true"
    # if open_port_53 is true, we need to open port 53
    ynh_print_info --message="Opening port 53..."
    ynh_exec_warn_less yunohost firewall allow Both 53
    ynh_exec_warn_less yunohost firewall reload
else
    open_port_53="false"
    ynh_print_info --message="Port 53 is already closed."
fi

ynh_app_setting_set --app="$app" --key=open_port_53 --value="$open_port_53"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=4

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$install_dir"

chmod -R o-rwx "$install_dir"
chown -R "$app:$app" "$install_dir"

setcap 'CAP_NET_BIND_SERVICE=+eip CAP_NET_RAW=+eip' "$install_dir/AdGuardHome"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=3

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================

# adding the adguardhome dedicated user to the 'ssl-cert' group to permit the
# use of the Let's Encrypt certs for DOT/DOQ
usermod -a -G ssl-cert "$app"

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=1

# put the network interface in a dedicated dnsmasq config
configure_network_interface_dnsmasq

# get IPv4 for the AGH config file (with a starting "- ")
ipv4_addr=$(echo "- " "$(process_ips "$(ip -4 route get 1.2.3.4 2> /dev/null | head -n1 | head -n1)")")

# get IPv6 for the AGH config file (with a starting "- ")
ipv6_addr=$(echo "- " "$(process_ips "$(ip -6 route get ::1.2.3.4 2> /dev/null | head -n1)")")

password=$(python3 -c "import bcrypt; print(bcrypt.hashpw(b\"$password\", bcrypt.gensalt(rounds=10)).decode())")
ynh_app_setting_set --app="$app" --key=password --value="$password"

# Main config File
ynh_add_config --template="AdGuardHome.yaml" --destination="$install_dir/AdGuardHome.yaml"

chmod 600 "$install_dir/AdGuardHome.yaml"
chown -R "$app:$app" "$install_dir/AdGuardHome.yaml"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=1

# Create a dedicated systemd config
ynh_add_systemd_config

yunohost service add "$app" --description="Ads & trackers blocking DNS server" --needs_exposed_ports "$port_dns_over_http" "$port_dns_over_quic"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=2

# Start a systemd service
ynh_systemd_action --service_name="$app" --action="restart" --log_path=systemd

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Installation of $app completed" --last

# temporarily cat the AGH config for debug purposes
ynh_print_info --message="$(head -n 30 /var/www/adguardhome/AdGuardHome.yaml)"