#!/bin/bash

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

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

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url="/"
is_public=$YNH_APP_ARG_IS_PUBLIC
admin=$YNH_APP_ARG_ADMIN
password=$YNH_APP_ARG_PASSWORD
group_name=$YNH_APP_ARG_GROUP_NAME
group_description=$YNH_APP_ARG_GROUP_DESCRIPTION

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"

# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=4

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=password --value="$password"
ynh_app_setting_set --app=$app --key=group_name --value="$group_name"
ynh_app_setting_set --app=$app --key=group_description --value="$group_description"

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=3

# Find an available port
port=$(ynh_find_port --port=8095)
ynh_app_setting_set --app=$app --key=port --value=$port

ldap_port=$(ynh_find_port --port=$(($port + 1)))
ynh_app_setting_set --app=$app --key=port --value=$ldap_port

# Find an available port for TURN
turn_port=$(ynh_find_port --port=1194)
ynh_app_setting_set --app=$app --key=turn_port --value=$turn_port

# Open TURN port
ynh_script_progression --message="Configuring firewall..." --weight=1

ynh_exec_warn_less yunohost firewall allow Both $turn_port

# Reserve UDP Port range 49152:65535
ynh_exec_warn_less yunohost firewall allow UDP -4 49152:65535

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=1

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=3

# Create a system user
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=1

ynh_app_setting_set --app=$app --key=final_path --value=$final_path
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path/build"
ynh_setup_source --dest_dir="$final_path/build_ldap" --source_id="ldap"

mkdir -p "$final_path/live/data"
mkdir -p "$final_path/live_ldap/data"
cp -r "$final_path/build/static/" "$final_path/live/"
ynh_replace_string --match_string="<div class=\"galene-header\">Galène</div>" --replace_string="<div class=\"galene-header\" onclick=\"location.href=window.location.origin\" style=\"cursor:pointer\">Galène</div>" --target_file="$final_path/live/static/galene.html"
chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================
# BUILD APP
#=================================================
ynh_script_progression --message="Building app..." --weight=1

ynh_install_go --go_version=$go_version
ynh_use_go
pushd $final_path/build/
	ynh_exec_as $app CGO_ENABLED=0 $ynh_go build -ldflags='-s -w' -o $final_path/live/
popd
pushd $final_path/build_ldap/
	ynh_exec_as $app CGO_ENABLED=0 $ynh_go build -ldflags='-s -w' -o $final_path/live_ldap/
popd
ynh_remove_go
ynh_secure_remove --file="$final_path/build/"
ynh_secure_remove --file="$final_path/build_ldap/"
ynh_secure_remove --file="$final_path/.cache/"
ynh_secure_remove --file="$final_path/go/"
ynh_secure_remove --file="$final_path/.go-version"

#=================================================
# CREATE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Creating a data directory..." --weight=1

datadir=/home/yunohost.app/$app
ynh_app_setting_set --app=$app --key=datadir --value=$datadir

mkdir -p $datadir/{groups,recordings}

chmod 750 "$datadir"
chmod -R o-rwx "$datadir"
chown -R $app:www-data "$datadir"

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

# Configure Galene
ynh_add_config --template="../conf/config.json" --destination="$final_path/live/data/config.json"
chmod 400 "$final_path/live/data/config.json"
chown $app:$app "$final_path/live/data/config.json"

# Configure Galene LDAP
key=$(jose jwk gen -i '{"kty":"oct","alg":"HS256"}')
ynh_app_setting_set --app=$app --key=key --value="$key"
ynh_add_config --template="../conf/galene-ldap.json" --destination="$final_path/live_ldap/data/galene-ldap.json"
chmod 400 "$final_path/live_ldap/data/galene-ldap.json"
chown $app:$app "$final_path/live_ldap/data/galene-ldap.json"

# Create a group name config
ynh_add_config --template="../conf/groupname.json" --destination="$datadir/groups/$group_name.json"
chmod 400 "$datadir/groups/$group_name.json"
chown $app:$app "$datadir/groups/$group_name.json"

# Create a group name authenticated on LDAP
ynh_add_config --template="../conf/groupname-ldap.json" --destination="$datadir/groups/YunoHost_Users.json"
chmod 400 "$datadir/groups/YunoHost_Users.json"
chown $app:$app "$datadir/groups/YunoHost_Users.json"

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

public_ip4="$(curl -s ip.yunohost.org)" || true

# Create a dedicated systemd config
ynh_add_systemd_config
ynh_add_systemd_config --service=${app}_ldap --template="ldap.service"

#=================================================
# GENERIC FINALIZATION
#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=2

yunohost service add $app --description="Videoconferencing server" --needs_exposed_ports="$turn_port"
yunohost service add ${app}_ldap --description="LDAP integration for the videoconferencing server"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="systemd"
ynh_systemd_action --service_name=${app}_ldap --action="start" --log_path="systemd"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=2

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# Everyone can access the app.
	# The "main" permission is automatically created before the install script.
	ynh_permission_update --permission="main" --add="visitors"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=2

ynh_systemd_action --service_name=nginx --action=reload

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

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