<?php
namespace DayTidy\Data;

class PaymentStatus
{
    const UNPAID = 'unpaid';
    const PENDING = 'pending';
    const PAID = 'paid';
    const FAILED = 'failed';
    const NOT_REQUIRED = 'not_required';
    const REFUNDED = 'refunded';
    const PARTIALLY_REFUNDED = 'partially_refunded';

    public static function label(string $status): string
    {
        if ($status === self::PAID) return esc_html__('Paid', 'daytidy');
        if ($status === self::PENDING) return esc_html__('Pending', 'daytidy');
        if ($status === self::FAILED) return esc_html__('Failed', 'daytidy');
        if ($status === self::NOT_REQUIRED) return esc_html__('Not Required', 'daytidy');
        if ($status === self::REFUNDED) return esc_html__('Refunded', 'daytidy');
        if ($status === self::PARTIALLY_REFUNDED) return esc_html__('Partially Refunded', 'daytidy');

        return esc_html__('Unpaid', 'daytidy');
    }

    /**
     * @return array<string, string>
     */
    public static function options(): array
    {
        return [
            self::PAID => self::label(self::PAID),
            self::UNPAID => self::label(self::UNPAID),
            self::PENDING => self::label(self::PENDING),
            self::FAILED => self::label(self::FAILED),
            self::NOT_REQUIRED => self::label(self::NOT_REQUIRED),
            self::REFUNDED => self::label(self::REFUNDED),
            self::PARTIALLY_REFUNDED => self::label(self::PARTIALLY_REFUNDED),
        ];
    }

    /**
     * @return string[]
     */
    public static function all(): array
    {
        return array_keys(self::options());
    }

    public static function valid(string $status): bool
    {
        return in_array($status, self::all(), true);
    }

    public static function canCompleteBooking(string $status): bool
    {
        return in_array($status, [
            self::PAID,
            self::REFUNDED,
            self::PARTIALLY_REFUNDED,
            self::NOT_REQUIRED,
        ], true);
    }

    public static function canSatisfyCompletionAfterTransition(string $current, string $target): bool
    {
        if ($target === '') return self::canCompleteBooking($current);
        if (in_array($target, [self::PAID, self::NOT_REQUIRED], true)) return true;
        if (!in_array($target, [self::REFUNDED, self::PARTIALLY_REFUNDED], true)) return false;

        return in_array($current, [
            self::PAID,
            self::REFUNDED,
            self::PARTIALLY_REFUNDED,
        ], true);
    }

    public static function normalize(string $status, string $default = self::UNPAID): string
    {
        $status = sanitize_key($status);
        if ($status === 'payment_pending') return self::PENDING;
        if ($status === 'payment_failed') return self::FAILED;
        if ($status === 'payment_not_required') return self::NOT_REQUIRED;
        if ($status === 'partially-refunded') return self::PARTIALLY_REFUNDED;
        if ($status === 'not-required') return self::NOT_REQUIRED;

        return self::valid($status) ? $status : $default;
    }

    public static function fromLegacy(string $status): string
    {
        $status = (int) $status;

        if ($status === 1) return self::PAID;
        if ($status === 2) return self::PENDING;
        if ($status === -2) return self::FAILED;
        if ($status === 3) return self::NOT_REQUIRED;
        if ($status === -1) return self::REFUNDED;
        if ($status === -3) return self::PARTIALLY_REFUNDED;

        return self::UNPAID;
    }
}