<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

function postfee_default_settings() {
	return array(
		'currency'              => function_exists( 'get_woocommerce_currency' ) ? get_woocommerce_currency() : 'USD',
		'post_types'            => array( 'post' ),
		'paid_status'           => 'publish',
		'gateways'              => array( 'stripe', 'paypal', 'woocommerce' ),
		'stripe_secret_key'     => '',
		'stripe_webhook_secret' => '',
		'paypal_mode'           => 'sandbox',
		'paypal_client_id'      => '',
		'paypal_secret'         => '',
		'paypal_webhook_id'     => '',
		'submit_page'           => 0,
		'dashboard_page'        => 0,
		'delete_data'           => 0,
	);
}

function postfee_get_settings() {
	return wp_parse_args( (array) get_option( 'postfee_settings', array() ), postfee_default_settings() );
}

function postfee_setting( $key, $default = '' ) {
	$settings = postfee_get_settings();
	return isset( $settings[ $key ] ) ? $settings[ $key ] : $default;
}

function postfee_currency() {
	return strtoupper( postfee_setting( 'currency', 'USD' ) );
}

/**
 * Currencies offered in the settings, as code => name.
 */
function postfee_currencies() {
	$currencies = array(
		'AED' => __( 'United Arab Emirates dirham', 'postfee' ),
		'AUD' => __( 'Australian dollar', 'postfee' ),
		'BRL' => __( 'Brazilian real', 'postfee' ),
		'CAD' => __( 'Canadian dollar', 'postfee' ),
		'CHF' => __( 'Swiss franc', 'postfee' ),
		'CLP' => __( 'Chilean peso', 'postfee' ),
		'CNY' => __( 'Chinese yuan', 'postfee' ),
		'COP' => __( 'Colombian peso', 'postfee' ),
		'CZK' => __( 'Czech koruna', 'postfee' ),
		'DKK' => __( 'Danish krone', 'postfee' ),
		'EGP' => __( 'Egyptian pound', 'postfee' ),
		'EUR' => __( 'Euro', 'postfee' ),
		'GBP' => __( 'Pound sterling', 'postfee' ),
		'HKD' => __( 'Hong Kong dollar', 'postfee' ),
		'HUF' => __( 'Hungarian forint', 'postfee' ),
		'IDR' => __( 'Indonesian rupiah', 'postfee' ),
		'ILS' => __( 'Israeli new shekel', 'postfee' ),
		'INR' => __( 'Indian rupee', 'postfee' ),
		'JPY' => __( 'Japanese yen', 'postfee' ),
		'KRW' => __( 'South Korean won', 'postfee' ),
		'MXN' => __( 'Mexican peso', 'postfee' ),
		'MYR' => __( 'Malaysian ringgit', 'postfee' ),
		'NGN' => __( 'Nigerian naira', 'postfee' ),
		'NOK' => __( 'Norwegian krone', 'postfee' ),
		'NZD' => __( 'New Zealand dollar', 'postfee' ),
		'PEN' => __( 'Peruvian sol', 'postfee' ),
		'PHP' => __( 'Philippine peso', 'postfee' ),
		'PKR' => __( 'Pakistani rupee', 'postfee' ),
		'PLN' => __( 'Polish złoty', 'postfee' ),
		'RON' => __( 'Romanian leu', 'postfee' ),
		'SAR' => __( 'Saudi riyal', 'postfee' ),
		'SEK' => __( 'Swedish krona', 'postfee' ),
		'SGD' => __( 'Singapore dollar', 'postfee' ),
		'THB' => __( 'Thai baht', 'postfee' ),
		'TRY' => __( 'Turkish lira', 'postfee' ),
		'TWD' => __( 'New Taiwan dollar', 'postfee' ),
		'UAH' => __( 'Ukrainian hryvnia', 'postfee' ),
		'USD' => __( 'United States dollar', 'postfee' ),
		'VND' => __( 'Vietnamese đồng', 'postfee' ),
		'ZAR' => __( 'South African rand', 'postfee' ),
	);

	$currencies = (array) apply_filters( 'postfee_currencies', $currencies );

	// Keep the saved currency selectable even when it is not in the list.
	$current = postfee_currency();
	if ( ! isset( $currencies[ $current ] ) ) {
		$currencies[ $current ] = $current;
	}

	asort( $currencies );
	return $currencies;
}

/**
 * Post types users are allowed to submit and pay for.
 */
function postfee_post_types() {
	$types = array_filter( (array) postfee_setting( 'post_types', array( 'post' ) ), 'post_type_exists' );
	return apply_filters( 'postfee_post_types', array_values( $types ) );
}

function postfee_is_zero_decimal( $currency ) {
	return in_array( strtoupper( $currency ), array( 'BIF', 'CLP', 'DJF', 'GNF', 'JPY', 'KMF', 'KRW', 'MGA', 'PYG', 'RWF', 'UGX', 'VND', 'VUV', 'XAF', 'XOF', 'XPF' ), true );
}

/**
 * Amounts are stored and sent to gateways in the currency's smallest unit.
 */
function postfee_to_minor( $amount, $currency = '' ) {
	$currency = $currency ? $currency : postfee_currency();
	return (int) round( (float) $amount * ( postfee_is_zero_decimal( $currency ) ? 1 : 100 ) );
}

function postfee_format_price( $minor, $currency = '' ) {
	$currency = strtoupper( $currency ? $currency : postfee_currency() );
	$zero     = postfee_is_zero_decimal( $currency );
	$number   = number_format_i18n( $minor / ( $zero ? 1 : 100 ), $zero ? 0 : 2 );
	$symbols  = array(
		'USD' => '$',
		'EUR' => '€',
		'GBP' => '£',
		'ILS' => '₪',
		'JPY' => '¥',
		'CAD' => 'CA$',
		'AUD' => 'A$',
		'INR' => '₹',
	);
	$symbol   = isset( $symbols[ $currency ] ) ? $symbols[ $currency ] : $currency . ' ';

	return apply_filters( 'postfee_format_price', $symbol . $number, $minor, $currency );
}

/**
 * Current UTC time in MySQL format. All table datetimes are stored in UTC.
 */
function postfee_now( $offset = 0 ) {
	return gmdate( 'Y-m-d H:i:s', time() + $offset );
}

function postfee_format_date( $mysql_utc ) {
	return $mysql_utc ? wp_date( get_option( 'date_format' ), strtotime( $mysql_utc . ' UTC' ) ) : '';
}

/**
 * URL of the submit or dashboard page, falling back to the page being viewed.
 */
function postfee_page_url( $which, $args = array() ) {
	$page_id = absint( postfee_setting( $which . '_page' ) );
	$url     = $page_id ? get_permalink( $page_id ) : '';
	if ( ! $url ) {
		$url = get_queried_object_id() ? get_permalink( get_queried_object_id() ) : home_url( '/' );
	}
	return $args ? add_query_arg( $args, $url ) : $url;
}