#!/bin/bash

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

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

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================

maintenance_mode=0
fpm_footprint="high"
fpm_free_footprint=0
fpm_usage="medium"

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================

ynh_app_setting_set --app=$app --key=maintenance_mode --value=$maintenance_mode
ynh_app_setting_set --app=$app --key=fpm_footprint --value=$fpm_footprint
ynh_app_setting_set --app=$app --key=fpm_free_footprint --value=$fpm_free_footprint
ynh_app_setting_set --app=$app --key=fpm_usage --value=$fpm_usage

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=5

# Load the last available version
source upgrade.d/upgrade.last.sh

# Create an app.src for the last version of nextcloud
cat > ../conf/app.src << EOF
SOURCE_URL=https://download.nextcloud.com/server/releases/nextcloud-$next_version.tar.bz2
SOURCE_SUM=$nextcloud_source_sha256
SOURCE_SUM_PRG=sha256sum
SOURCE_FORMAT=tar.bz2
SOURCE_IN_SUBDIR=true
EOF

# Enable YunoHost patches on Nextcloud sources
cp -a ../sources/patches_last_version/* ../sources/patches
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$install_dir"

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring PHP-FPM..." --weight=50

# Create a dedicated PHP-FPM config
ynh_add_fpm_config --usage=$fpm_usage --footprint=$fpm_footprint

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

# Check if .well-known is available for this domain
if is_url_handled --domain="$domain" --path="/.well-known/caldav" || is_url_handled --domain="$domain" --path="/.well-known/carddav"
then
    ynh_print_warn --message="Another app already uses the domain $domain to serve a CalDAV/CardDAV feature. You may encounter issues when dealing with your calendar or address book."

    # Remove lines about .well-known/carddav and caldav with sed.
    sed --in-place --regexp-extended '/location = \/\.well\-known\/(caldav|carddav)/d' "../conf/nginx.conf"
fi

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# INSTALL NEXTCLOUD
#=================================================
ynh_script_progression --message="Installing $app..." --weight=30

# Set write access for the following commands
chown -R $app: "$install_dir" "$data_dir"

# Define password in an intermediate var
# The fact that it's called _password allows it to be
# picked up by YunoHost's auto-redact mecanism
admin_password="$(ynh_string_random --length=6)"

# Install Nextcloud using a temporary admin user
exec_occ maintenance:install \
    --database "pgsql" --database-name $db_name \
    --database-user $db_user --database-pass "$db_pwd" \
    --admin-user "admin" --admin-pass "$admin_password" \
    --data-dir "$data_dir/data" \
    || ynh_die --message="Unable to install Nextcloud"

#=================================================
# CONFIGURE NEXTCLOUD
#=================================================
ynh_script_progression --message="Configuring $app..." --weight=8

# Ensure that UpdateNotification app is disabled
exec_occ app:disable updatenotification

# Enable LDAP plugin
exec_occ app:enable user_ldap
exec_occ ldap:create-empty-config

# Load the installation config file in Nextcloud
nc_conf="$install_dir/config_install.json"
ynh_add_config --template="../conf/config_install.json" --destination="$nc_conf"

exec_occ config:import "$nc_conf"

# Then remove the config file
ynh_secure_remove --file="$nc_conf"

# Load the additional config file (used also for upgrade)
nc_conf="$install_dir/config.json"
ynh_add_config --template="../conf/config.json" --destination="$nc_conf"

exec_occ config:import "$nc_conf"

# Then remove the config file
ynh_secure_remove --file="$nc_conf"

#=================================================
# CHECK THE LDAP CONFIG
#=================================================

# Check LDAP configuration to see if everything worked well
exec_occ ldap:test-config '' \
  || ynh_die --message="An error occured during LDAP configuration"

#=================================================
# MOUNT HOME FOLDERS AS EXTERNAL STORAGE
#=================================================

# Enable External Storage and create local mount to home folder
if [ $user_home -eq 1 ]
then
    exec_occ app:enable files_external
    create_external_storage "/home/\$user" "Home"
    # Iterate over users to extend their home folder permissions
    for u in $(ynh_user_list); do
        setfacl --modify g:$app:rwx "/home/$u" || true
    done
fi

#=================================================
# ALLOW USERS TO DISCONNECT FROM NEXTCLOUD
#=================================================

# Add dynamic logout URL to the config
exec_occ config:system:get logout_url >/dev/null 2>&1 \
  || echo "
//-YunoHost-
// set logout_url according to main domain
\$main_domain = exec('cat /etc/yunohost/current_host');
\$CONFIG['logout_url'] = 'https://'.\$main_domain.'/yunohost/sso/?action=logout';
//-YunoHost-
" >> "$install_dir/config/config.php"

#=================================================
# CHANGE HOSTNAME FOR ACTIVITY NOTIFICATIONS
#=================================================

exec_occ config:system:set overwrite.cli.url --value="https://${domain}"

#=================================================
# REMOVE THE TEMPORARY ADMIN AND SET THE TRUE ONE
#=================================================

# Set the user as admin
ynh_psql_connect_as --user=$db_user --password="$db_pwd" --database=$db_name \
    <<< "INSERT INTO oc_group_user VALUES ('admin','$admin');"

# And delete admin user
exec_occ user:delete admin

#=================================================
# STORE THE CHECKSUM OF THE CONFIG FILE
#=================================================

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$install_dir/config/config.php"

#=================================================
# ADD A CRON JOB
#=================================================

cron_path="/etc/cron.d/$app"
ynh_add_config --template="../conf/nextcloud.cron" --destination="$cron_path"
chown root: "$cron_path"
chmod 644 "$cron_path"

exec_occ background:cron

#=================================================
# POST-INSTALL MAINTENANCE
#=================================================

exec_occ db:add-missing-indices
exec_occ db:add-missing-columns
exec_occ db:convert-filecache-bigint -n

#=================================================
# YUNOHOST MULTIMEDIA INTEGRATION
#=================================================
ynh_script_progression --message="Adding multimedia directories..." --weight=6

# Build YunoHost multimedia directories
ynh_multimedia_build_main_dir

# Mount the user directory in Nextcloud
exec_occ app:enable files_external
create_external_storage "/home/yunohost.multimedia/\$user" "Multimedia"
create_external_storage "/home/yunohost.multimedia/share" "Shared multimedia"

# Allow nextcloud to write into these directories
ynh_multimedia_addaccess $app

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Fix app ownerships & permissions
chown -R $app:www-data "$install_dir"
chown -R $app: "$data_dir"
find $install_dir/ -type f -print0 | xargs -0 chmod 0644
find $install_dir/ -type d -print0 | xargs -0 chmod 0755
find $data_dir/data/ -type f -print0 | xargs -0 chmod 0640
find $data_dir/data/ -type d -print0 | xargs -0 chmod 0750
chmod 640 "$install_dir/config/config.php"
chmod 755 /home/yunohost.app
chmod 750 $install_dir

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=1

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --logfile="$data_dir/data/nextcloud.log"

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring Fail2Ban..." --weight=8

# Create a dedicated Fail2Ban config
ynh_add_fail2ban_config --logpath="$data_dir/data/nextcloud.log" --failregex="^.*Login failed: '.*' \(Remote IP: '<HOST>'.*$" --max_retry=5

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

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