#!/bin/bash

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

# Load common variables and helpers
source ./experimental_helper.sh
source ./_common.sh

# IMPORT GENERIC HELPERS
source /usr/share/yunohost/helpers

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

# Retrieve arguments
domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC
upstream_version=$(ynh_app_upstream_version)

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

# Check user parameter
ynh_user_exists "$admin" \
  || ynh_die --message "The chosen admin user does not exist."

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

if [ -e "$datadir" ]; then
    old_data_dir_path="$datadir$(date '+%Y%m%d.%H%M%S')"
    ynh_print_warn "A data directory already exist. Data was renamed to $old_data_dir_path"
    mv "$datadir" "$old_data_dir_path"
fi

# Generate random password and key
ynh_script_progression --message="Defining db password and key..."
db_password=$(ynh_string_random)
key=$(ynh_string_random)
lfs_key=$(ynh_string_random)

# Find available ports
port=$(ynh_find_port --port 6000)

# Store Settings
ynh_script_progression --message="Storing installation settings..."
ynh_app_setting_set --app $app --key mysqlpwd --value $db_password
ynh_app_setting_set --app $app --key adminusername --value $admin
ynh_app_setting_set --app $app --key secret_key --value $key
ynh_app_setting_set --app $app --key lfs_key --value $lfs_key
ynh_app_setting_set --app $app --key web_port --value $port

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

# Initialize database and store mysql password for upgrade
ynh_script_progression --message="Configuring MySQL database..."
ynh_mysql_create_db "$dbname" "$db_user" "$db_password"

# Add users
ynh_script_progression --message="Configuring system user..."
ynh_system_user_create --username=$app --home_dir=$datadir --use_shell
# Add ssh permission for forgejo user
adduser $app ssh.app

# create needed directories
create_dir

# Configure init script
ynh_script_progression --message="Configuring a systemd service..." --weight=2
ynh_add_systemd_config

# Modify Nginx configuration file and copy it to Nginx conf directory
ynh_script_progression --message="Configuring nginx..." --weight=1
config_nginx

# Configure forgejo with app.ini file
ynh_script_progression --message="Configuring application, step 1/2..."
config_forgejo

ynh_script_progression --message="Installing sources files..." --weight=10

# Install forgejo
ynh_setup_source $final_path source/$architecture

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

ynh_script_progression --message="Configuring application, step 2/2..."

# Start forgejo for building mysql tables
systemctl start "$app".service

# Wait untill login_source mysql table is created
while ! $(ynh_mysql_connect_as "$db_user" "$db_password" "$dbname"  <<< "SELECT * FROM login_source;" &>/dev/null)
do
    sleep 2
done

# Add ldap config
ynh_replace_string --match_string "__APP__" --replace_string "$app" --target_file ../conf/login_source.sql
ynh_mysql_connect_as "$db_user" "$db_password" "$dbname" < ../conf/login_source.sql

# SETUP FAIL2BAN
ynh_script_progression --message="Configuring fail2ban..."
ynh_add_fail2ban_config --logpath "/var/log/$app/forgejo.log" --failregex ".*Failed authentication attempt for .* from <HOST>" --max_retry 5

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

# Unprotect root from SSO if public
ynh_script_progression --message="Configuring permissions..."
if [ "$is_public" == '1' ];
then
    ynh_permission_update --permission "main" --add "visitors"
fi

# Create permission
ynh_script_progression --message="Configuring permissions"
ynh_permission_create --permission="admin" --allowed=$admin

# Add forgejo to YunoHost's monitored services
ynh_script_progression --message="Register Forgejo service..."
yunohost service add "$app" --log="/var/log/$app/forgejo.log"

# Configure logrotate
ynh_script_progression --message="Configuring log rotation..."
ynh_use_logrotate --logfile "/var/log/$app"

# Save Version
ynh_app_setting_set --app $app --key upstream_version --value $(ynh_app_upstream_version)

# Reload services
ynh_script_progression --message="Starting forgejo services..." --weight=3

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:"

# Store the checksum with the 'INTERNAL_TOKEN' value.
# Should be removed when the issue https://github.com/go-gitea/gitea/issues/3246 is fixed
ynh_store_file_checksum --file "$final_path/custom/conf/app.ini"

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