#!/bin/bash

# Create a dedicated nginx config
#
# usage: ynh_add_nginx_config "list of others variables to replace"
#
# | arg: list - (Optional) list of others variables to replace separated by spaces. For example : 'path_2 port_2 ...'
#
# This will use a template in ../conf/nginx.conf
#   __PATH__      by  $path_url
#   __DOMAIN__    by  $domain
#   __PORT__      by  $port
#   __NAME__      by  $app
#   __FINALPATH__ by  $final_path
#   __PHPVERSION__ by  $YNH_PHP_VERSION ($YNH_PHP_VERSION is either the default php version or the version defined for the app)
#
#  And dynamic variables (from the last example) :
#   __PATH_2__    by $path_2
#   __PORT_2__    by $port_2
#
# Requires YunoHost version 2.7.2 or higher.
# Requires YunoHost version 2.7.13 or higher for dynamic variables
ynh_add_nginx_config () {
    finalnginxconf="/etc/nginx/conf.d/$domain.d/$app.conf"
    local others_var=${1:-}
    ynh_backup_if_checksum_is_different --file="$finalnginxconf"
    cp ../conf/nginx.conf "$finalnginxconf"

    # To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
    # Substitute in a nginx config file only if the variable is not empty
    if test -n "${path_url:-}"
    then
        # path_url_slash_less is path_url, or a blank value if path_url is only '/'
        local path_url_slash_less=${path_url%/}
        ynh_replace_string --match_string="__PATH__/" --replace_string="$path_url_slash_less/" --target_file="$finalnginxconf"
        ynh_replace_string --match_string="__PATH__" --replace_string="$path_url" --target_file="$finalnginxconf"
    fi
    if test -n "${domain:-}"; then
        ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$finalnginxconf"
    fi
    if test -n "${port:-}"; then
        ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$finalnginxconf"
    fi
    if test -n "${app:-}"; then
        ynh_replace_string --match_string="__NAME__" --replace_string="$app" --target_file="$finalnginxconf"
    fi
    if test -n "${final_path:-}"; then
        ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path" --target_file="$finalnginxconf"
    fi
    ynh_replace_string --match_string="__PHPVERSION__" --replace_string="$YNH_PHP_VERSION" --target_file="$finalnginxconf"

    # Replace all other variable given as arguments
    for var_to_replace in $others_var
    do
        # ${var_to_replace^^} make the content of the variable on upper-cases
        # ${!var_to_replace} get the content of the variable named $var_to_replace 
        ynh_replace_string --match_string="__${var_to_replace^^}__" --replace_string="${!var_to_replace}" --target_file="$finalnginxconf"
    done

    if [ "${path_url:-}" != "/" ]
    then
        ynh_replace_string --match_string="^#sub_path_only" --replace_string="" --target_file="$finalnginxconf"
    else
        ynh_replace_string --match_string="^#root_path_only" --replace_string="" --target_file="$finalnginxconf"
    fi

    ynh_store_file_checksum --file="$finalnginxconf"

    ynh_systemd_action --service_name=nginx --action=reload
}

# Remove the dedicated nginx config
#
# usage: ynh_remove_nginx_config
#
# Requires YunoHost version 2.7.2 or higher.
ynh_remove_nginx_config () {
    ynh_secure_remove --file="/etc/nginx/conf.d/$domain.d/$app.conf"
    ynh_systemd_action --service_name=nginx --action=reload
}