#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
admin=$(ynh_app_setting_get --app=$app --key=admin)
port=$(ynh_app_setting_get --app=$app --key=port)
datadir=$(ynh_app_setting_get --app=$app --key=datadir)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
key=$(ynh_app_setting_get --app=$app --key=key)
lfs_key=$(ynh_app_setting_get --app=$app --key=lfs_key)

#=================================================
# CHECK VERSION
#=================================================

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=2

ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd"

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=1

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
    # Restore it if the upgrade fails
    ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors


#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# If db_name doesn't exist, create it
if [ -z "$db_name" ]; then
    db_name=$(ynh_sanitize_dbid --db_name=$app)
    ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

# If port doesn't exist, create it
if [ -z "$port" ]; then
    port=$(ynh_find_port --port=6000)
    ynh_app_setting_set --app=$app --key=port --value=$port
fi

# If lfs_key doesn't exist, create it
if [ -z "$lfs_key" ]; then
   lfs_key=$(ynh_string_random)
   ynh_app_setting_set --app=$app --key=lfs_key --value=$lfs_key
fi

# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
    final_path=/opt/$app
    ynh_app_setting_set --app=$app --key=final_path --value=$final_path
fi

# If datadir doesn't exist, create it
if [ -z "$datadir" ]; then
    datadir=/home/yunohost.app/$app
    ynh_app_setting_set --app=$app --key=datadir --value=$datadir
    mkdir -p $datadir
    mkdir -p "$datadir/data/{repositories,avatars,attachments}"
    mkdir -p "$datadir/.ssh"

    chmod 750 "$datadir"
    chmod -R o-rwx "$datadir"
    chown -R $app:$app "$datadir"
    chmod u=rwx,g=,o= "$datadir/.ssh"
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path" --groups ssh.app

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=3

ynh_setup_source --dest_dir=$final_path --source_id=$YNH_ARCH
chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:$app "$final_path"
chmod +x "$final_path/forgejo"

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

ssh_port=$(grep -P "Port\s+\d+" /etc/ssh/sshd_config | grep -P -o "\d+")
ynh_add_config --template="app.ini" --destination="$final_path/custom/conf/app.ini"

chmod 640 "$final_path/custom/conf/app.ini"
chown $app:$app "$final_path/custom/conf/app.ini"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..." --weight=1
ynh_add_systemd_config

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=10

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

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

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --logfile "/var/log/$app"

chown -R $app:$app "/var/log/$app"
chmod u=rwX,g=rX,o= "/var/log/$app"

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

yunohost service add $app --description="Forgejo" --log="/var/log/$app/forgejo.log"

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

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/forgejo.log" --line_match="Starting new Web server: tcp:127.0.0.1:"

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring Fail2Ban..." --weight=1

ynh_add_fail2ban_config --logpath "/var/log/$app/forgejo.log" --failregex ".*Failed authentication attempt for .* from <HOST>" --max_retry 5


#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

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