#!/bin/bash

#=================================================
# GENERIC START
#=================================================

# Source YunoHost helpers
source /usr/share/yunohost/helpers

# Stop script if errors
ynh_abort_if_errors

# Import common cmd
source ./experimental_helper.sh
source ./_common.sh

ynh_script_progression --message="Validating installation parameters..."

# Retrieve arguments
domain=$YNH_APP_ARG_DOMAIN
path_url=$(ynh_normalize_url_path --path_url $YNH_APP_ARG_PATH)
server_name="$YNH_APP_ARG_SERVER_NAME"
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC
seafile_data=/home/yunohost.app/seafile-data
final_path=/opt/yunohost/$app
seafile_user=$app
admin_password=$YNH_APP_ARG_ADMIN_PASSWORD

# Create special path with / at the end
if [[ $path_url == '/' ]]
then
    path_url2=$path_url
else
    path_url2=$path_url"/"
fi

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

# Check Final Path availability
test ! -e "$final_path" || ynh_die --message "This path already contains a folder"

# Find available ports
ynh_script_progression --message="Finding available ports..."
seahub_port=$(ynh_find_port --port 8000)
fileserver_port=$(ynh_find_port --port 8082)
webdav_port=$(ynh_find_port --port 8080)

if [ $fileserver_port -eq $webdav_port ]; then
    webdav_port=$(ynh_find_port --port $((fileserver_port + 1)))
fi

# store config in yunohost
ynh_script_progression --message="Storing installation settings..."
ynh_app_setting_set --app $app --key server_name --value "$server_name"
ynh_app_setting_set --app $app --key final_path --value $final_path
ynh_app_setting_set --app $app --key seafile_user --value $seafile_user
ynh_app_setting_set --app $app --key admin --value $admin
ynh_app_setting_set --app $app --key seahub_port --value $seahub_port
ynh_app_setting_set --app $app --key fileserver_port --value $fileserver_port
ynh_app_setting_set --app $app --key webdav_port --value $webdav_port
ynh_app_setting_set --app $app --key is_public --value $is_public
ynh_app_setting_set --app $app --key installed_version --value $seafile_version

#=================================================
# STANDARD MODIFICATIONS
#=================================================

# Create User
ynh_script_progression --message="Configuring system user..."
ynh_system_user_create --username $seafile_user --home_dir $final_path

# Check dependencies
ynh_script_progression --message="Installing dependencies..." --weight=7
install_dependance

# Copy files to the right place
ynh_script_progression --message="Cleaning data directory..."
test -e $seafile_data && ynh_secure_remove --file="$seafile_data"

ynh_script_progression --message="Creating base directory..."
mkdir -p $final_path
mkdir -p $final_path/installed
mkdir -p $final_path/logs
mkdir -p $final_path/seafile-data

# Download new version from sources
ynh_script_progression --message="Installing sources files..." --weight=7
install_source

# init databases
ynh_script_progression --message="Configuring MySQL database..."
db_user=seafile
ynh_mysql_setup_db --db_user $db_user --db_name ccnetdb
ynh_mysql_setup_db --db_user $db_user --db_name seafiledb --db_pwd "$db_pwd"
ynh_mysql_setup_db --db_user $db_user --db_name seahubdb --db_pwd "$db_pwd"

ynh_script_progression --message="Configuring application..." --weight=3

# Run install script
chmod +x expect_scripts/install.exp
chmod +x $final_path/seafile-server-$seafile_version/setup-seafile-mysql.sh
expect_scripts/install.exp "$final_path/seafile-server-$seafile_version" "$server_name" "$domain" "$seafile_data" "$fileserver_port" "$db_pwd"

# Update seafile config
ynh_replace_string --match_string http:// --replace_string https://  --target_file $final_path/conf/ccnet.conf
ynh_replace_string --match_string :8000   --replace_string $path_url --target_file $final_path/conf/ccnet.conf
echo 'FILE_SERVER_ROOT = "https://'$domain'/seafhttp"' | tee -a $final_path/conf/seahub_settings.py
echo 'SITE_ROOT = "'$path_url2'"' | tee -a $final_path/conf/seahub_settings.py
echo 'SERVE_STATIC = False' | tee -a $final_path/conf/seahub_settings.py
echo 'MEDIA_URL = "'$path_url2'media/"' | tee -a $final_path/conf/seahub_settings.py
echo 'COMPRESS_URL = MEDIA_URL' | tee -a $final_path/conf/seahub_settings.py
echo "STATIC_URL = MEDIA_URL + 'assets/'" | tee -a $final_path/conf/seahub_settings.py
echo "LOGIN_URL = '"$path_url2"accounts/login/'" | tee -a $final_path/conf/seahub_settings.py
echo "ALLOWED_HOSTS = ['"$domain"']" | tee -a $final_path/conf/seahub_settings.py

# Email configuration
echo 'EMAIL_USE_TLS = False' | tee -a $final_path/conf/seahub_settings.py
echo 'EMAIL_HOST = "localhost"' | tee -a $final_path/conf/seahub_settings.py
echo 'EMAIL_HOST_USER = "seafile@'$domain'"' | tee -a $final_path/conf/seahub_settings.py
echo 'EMAIL_PORT = "25"' | tee -a $final_path/conf/seahub_settings.py
echo 'DEFAULT_FROM_EMAIL = "seafile@'$domain'"' | tee -a $final_path/conf/seahub_settings.py
echo 'SERVER_EMAIL = "seafile@'$domain'"' | tee -a $final_path/conf/seahub_settings.py
echo 'EMAIL_HOST_PASSWORD = ""' | tee -a $final_path/conf/seahub_settings.py
echo "TIME_ZONE = \"$(cat /etc/timezone)\"" | tee -a $final_path/conf/seahub_settings.py

# SSO authentication
echo 'ENABLE_REMOTE_USER_AUTHENTICATION = True' | tee -a $final_path/conf/seahub_settings.py
echo "REMOTE_USER_HEADER = 'HTTP_EMAIL'" | tee -a $final_path/conf/seahub_settings.py
echo 'REMOTE_USER_CREATE_UNKNOWN_USER = False' | tee -a $final_path/conf/seahub_settings.py
echo "REMOTE_USER_PROTECTED_PATH = ['$path_url', '$path_url/accounts/login']" | tee -a $final_path/conf/seahub_settings.py

# LDAP configuration
echo '[LDAP]' | tee -a $final_path/conf/ccnet.conf
echo 'HOST = ldap://localhost:389' | tee -a $final_path/conf/ccnet.conf
echo 'BASE = ou=users,dc=yunohost,dc=org' | tee -a $final_path/conf/ccnet.conf
echo 'LOGIN_ATTR = mail' | tee -a $final_path/conf/ccnet.conf

# Enable manually wiki
echo 'ENABLE_WIKI = True' | tee -a $final_path/conf/seahub_settings.py

# Fix local warning
ynh_replace_string --match_string en_US.UTF-8 --replace_string ${LANG:-'en_US.UTF-8'} --target_file $final_path/seafile-server-$seafile_version/seahub.sh

# Update gunicorn config
sed --in-place -r "s@bind = \"127\.0\.0\.1:[[:digit:]]+\"@bind = \"127.0.0.1:$seahub_port\"@g" $final_path/conf/gunicorn.conf

# Add webdav
cp ../conf/seafdav.conf $final_path/conf/seafdav.conf
ynh_replace_string --match_string __WEBDAV_PORT__ --replace_string $webdav_port --target_file $final_path/conf/seafdav.conf

# Add Seafile Server to startup
ynh_script_progression --message="Configuring a systemd service..." --weight=2
ynh_add_systemd_config --service seafile --template seafile.service
ynh_add_systemd_config --service seahub --template seahub.service

# Config nginx
ynh_script_progression --message="Configuring nginx..." --weight=1
ynh_add_nginx_config 'seahub_port fileserver_port webdav_port'

# Copy first launch script
cp expect_scripts/first_launch.exp $final_path
chmod +x $final_path/first_launch.exp

# Set permissions to seafile directory
chown -R $seafile_user:$seafile_user $final_path
chown -R $seafile_user:$seafile_user $seafile_data

# Sometime we have a current effect. We try to lunch seafile when not all permissions are already set.
# So wait untils all permissions are cleanly set
sleep 5
ynh_debug_exec ls /opt/yunohost/seafile/ccnet

# Start seafile, seahub and populate admin account
su - $seafile_user -s /bin/bash -c "$final_path/seafile-server-$seafile_version/seafile.sh start"
# We escape all char witch needed.
ynh_replace_special_string --match_string __ADMIN_PASSWORD__ --replace_string "$admin_password" --target_file $final_path/first_launch.exp
admin_email=$(ynh_user_get_info --username $admin --key 'mail')
su - $seafile_user -s /bin/bash -c "$final_path/first_launch.exp $final_path/seafile-server-$seafile_version $admin_email"
ynh_secure_remove --file="$final_path/first_launch.exp"

#=================================================
# GENERIC FINALIZATION
#=================================================

# Set all permissions
ynh_script_progression --message="Protecting directory..."
set_permission

ynh_script_progression --message="Configuring permissions..."

# Add sso config to unprotect domain.tld/seafhttp + domain.tld/seafdav do in /etc/ssowat/conf.json.persistent
python3 ../conf/add_sso_conf.py || ynh_die --message="Your file /etc/ssowat/conf.json.persistent doesn't respect the json syntax. Please fix the syntax to install this app."

# unprotect media
ynh_app_setting_set --app $app --key unprotected_uris --value "/media"

if [ "$is_public" = "0" ]
then
	ynh_app_setting_delete --app seafile --key unprotected_uris
else
	ynh_app_setting_set --app $app --key unprotected_uris --value "/"
fi

# Add logrotate
ynh_script_progression --message="Configuring log rotation..."
ynh_use_logrotate --logfile $final_path/logs
ln -s $final_path/logs /var/log/seafile

# Add fail2ban
ynh_script_progression --message="Configuring fail2ban..." --weight=10
ynh_add_fail2ban_config --use_template --others_var 'final_path'

# register yunohost service
yunohost service add seafile
yunohost service add seahub

ynh_script_progression --message="Stoping services..." --weight=3

# Kill all services launched for initialisation
su - $seafile_user -s /bin/bash -c "$final_path/seafile-server-latest/seafile.sh stop"
su - $seafile_user -s /bin/bash -c "$final_path/seafile-server-latest/seahub.sh stop"
sleep 2

# We kill all process lunched by the script
pkill -f seafile-controller || true
pkill -f seaf-server || true

# Start service
ynh_script_progression --message="Starting seafile services..." --weight=3
ynh_systemd_action --service_name seafile -l "spawned seaf-server, pid " -p /var/log/seafile/controller.log
ynh_systemd_action --service_name seahub -l "Started Seafile hub." -p "systemd"
sleep 2

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