#!/bin/bash

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

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

#=================================================
# 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"

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

# Update forgejo login source
pushd "$install_dir"
    old_login_source_id=$(ynh_exec_as $app ./forgejo admin auth list | grep "YunoHost LDAP" | grep "via BindDN" | cut -f 1)
    if [ ! -z $old_login_source_id ]; then
        # Delete old login source
        ynh_exec_as $app ./forgejo admin auth delete --id $old_login_source_id

        # Create new login source
	    ynh_exec_as $app ./forgejo admin auth add-ldap-simple --security-protocol "Unencrypted" --name "YunoHost LDAP" --host "localhost" --port "389" --skip-tls-verify --user-search-base "ou=users,dc=yunohost,dc=org" --user-dn "uid=%s,ou=Users,dc=yunohost,dc=org" --user-filter "(&(objectclass=posixAccount)(uid=%s)(permission=cn=$app.main,ou=permission,dc=yunohost,dc=org))" --admin-filter "(permission=cn=forgejo.admin,ou=permission,dc=yunohost,dc=org)" --username-attribute "uid" --firstname-attribute "givenName" --surname-attribute "sn" --email-attribute "mail"
    fi
popd

# forgejo home directory has changed (yunohost packaging v2)
# .ssh directory should move from old home dir (data_dir) to new one
# (/var/www/$app is the default value for home in resources.system_user)
if [ -d "$data_dir/.ssh" ]; then
    mv "$data_dir/.ssh" /var/www/$app
fi

# If secret_key doesn't exist, create it
if [ -z "$secret_key" ]; then
    secret_key=$($install_dir/forgejo generate secret SECRET_KEY)
    ynh_app_setting_set --app=$app --key=secret_key --value=$secret_key
fi

# If lfs_jwt_secret doesn't exist, create it
if [ -z "$lfs_jwt_secret" ]; then
    lfs_jwt_secret=$($install_dir/forgejo generate secret JWT_SECRET)
    ynh_app_setting_set --app=$app --key=lfs_jwt_secret --value=$lfs_jwt_secret
fi

# If internal_token doesn't exist, create it
if [ -z "$internal_token" ]; then
    internal_token=$($install_dir/forgejo generate secret INTERNAL_TOKEN)
    ynh_app_setting_set --app=$app --key=internal_token --value=$internal_token
fi

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

ynh_setup_source --dest_dir=$install_dir
xz -f -d "$install_dir/forgejo.xz"

chmod -R o-rwx "$install_dir"
chown -R $app:$app "$install_dir"
chmod +x "$install_dir/forgejo"

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

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

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

#=================================================
# 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" --nonappend

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=3

# 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

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

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