#!/bin/bash

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

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

ynh_abort_if_errors

#=================================================
# 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)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
admin=$(ynh_app_setting_get --app=$app --key=adminusername)
is_public=$(ynh_app_setting_get --app=$app --key=is_public)
port=$(ynh_app_setting_get --app=$app --key=port)
architecture=$(ynh_detect_arch)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# 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

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

ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"

#=================================================
# STANDARD UPGRADE STEPS
#=================================================

# Clean template to fix issue : https://github.com/gogits/gogs/issues/4585
ynh_secure_remove "/opt/$app/templates"

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

REPO_PATH="/home/$app/repositories"
DATA_PATH="/home/$app/data"

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=$final_path --source_id="$architecture"

ynh_backup_if_checksum_is_different "$final_path/custom/conf/app.ini"
ynh_backup_if_checksum_is_different "$final_path/custom/conf/auth.d/ldap.conf"

cp ../conf/app.ini "$final_path/custom/conf"
cp ../conf/ldap.conf "$final_path/custom/conf/auth.d/ldap.conf"

if [ "$path_url" = "/" ]
then
    ynh_replace_string "__URL__" "$domain" "$final_path/custom/conf/app.ini"
else
    ynh_replace_string "__URL__" "$domain${path_url%/}" "$final_path/custom/conf/app.ini"
fi

ynh_replace_string --match_string="__REPOS_PATH__"  --replace_string="$REPO_PATH" --target_file="$final_path/custom/conf/app.ini"
ynh_replace_string --match_string="__DB_PASSWORD__" --replace_string="$db_pwd"    --target_file="$final_path/custom/conf/app.ini"
ynh_replace_string --match_string="__DB_USER__"     --replace_string="$db_user"    --target_file="$final_path/custom/conf/app.ini"
ynh_replace_string --match_string="__DOMAIN__"      --replace_string="$domain"    --target_file="$final_path/custom/conf/app.ini"
ynh_replace_string --match_string="__KEY__"         --replace_string="$(ynh_string_random)" --target_file="$final_path/custom/conf/app.ini"
ynh_replace_string --match_string="__DATA_PATH__"   --replace_string="$DATA_PATH" --target_file="$final_path/custom/conf/app.ini"
ynh_replace_string --match_string="__PORT__"        --replace_string="$port"      --target_file="$final_path/custom/conf/app.ini"
ynh_replace_string --match_string="__APP__"         --replace_string="$app"       --target_file="$final_path/custom/conf/app.ini"

if [[ "$is_public" = '1' ]]
then
    ynh_replace_string --match_string="__PRIVATE_MODE__" --replace_string="false" --target_file="$final_path/custom/conf/app.ini"
else
    ynh_replace_string --match_string="__PRIVATE_MODE__" --replace_string="true" --target_file="$final_path/custom/conf/app.ini"
fi

ynh_replace_string --match_string="__ADMIN__" --replace_string="$admin" --target_file="$final_path/custom/conf/auth.d/ldap.conf"

ynh_store_file_checksum "$final_path/custom/conf/app.ini"
ynh_store_file_checksum "$final_path/custom/conf/auth.d/ldap.conf"

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

# Create a dedicated systemd config
ynh_add_systemd_config

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions to app files
chown -R $app:$app "$final_path"
chown -R $app:$app "/home/$app"
chown -R $app:$app "/var/log/$app"
chmod u=rwX,g=rX,o= "$final_path"
chmod u=rwX,g=rX,o= "/home/$app"
chmod u=rwX,g=rX,o= "/var/log/$app"

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

yunohost service add $app --description="Lightweight Git forge" --log="/var/log/$app/$app.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/$app.log"

#=================================================
# 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