/**
 * Sky eSIM branded transactional emails (loaded from the child theme).
 */

defined( 'ABSPATH' ) || exit;

if ( defined( 'SKY_EMAIL_BRANDING_LOADED' ) ) {
	return;
}
define( 'SKY_EMAIL_BRANDING_LOADED', true );

define( 'SKY_EMAIL_BRAND', 'Sky eSIM' );
define( 'SKY_EMAIL_BLUE', '#0091FF' );
define( 'SKY_EMAIL_CONTACT', 'contact@skyesim.app' );

if ( ! defined( 'SKY_EMAIL_PLUGIN_DIR' ) ) {
	if ( function_exists( 'plugin_dir_path' ) && strpos( __FILE__, 'plugins' ) !== false ) {
		define( 'SKY_EMAIL_PLUGIN_DIR', dirname( __DIR__ ) . '/' );
	} else {
		define( 'SKY_EMAIL_PLUGIN_DIR', trailingslashit( get_stylesheet_directory() ) . 'woocommerce/' );
	}
}


/**
 * Locate overridden WooCommerce email templates in this plugin.
 */
function sky_email_locate_template( $template, $template_name, $template_path ) {
	if ( strpos( $template_name, 'emails/' ) !== 0 ) {
		return $template;
	}
	$custom = SKY_EMAIL_PLUGIN_DIR . 'templates/' . $template_name;
	if ( ! is_readable( $custom ) ) {
		$custom = SKY_EMAIL_PLUGIN_DIR . $template_name;
	}
	if ( is_readable( $custom ) ) {
		return $custom;
	}
	return $template;
}
add_filter( 'woocommerce_locate_template', 'sky_email_locate_template', 20, 3 );

/**
 * WooCommerce email CSS — match branded card layout.
 */
function sky_email_styles( $css ) {
	$blue  = SKY_EMAIL_BLUE;
	$extra = "
body { background-color: #f3f4f6 !important; font-family: Arial, Helvetica, sans-serif !important; }
#wrapper { background-color: #f3f4f6 !important; padding: 24px 12px !important; }
#template_container { background-color: #ffffff !important; border: none !important; border-radius: 12px !important; box-shadow: 0 1px 3px rgba(0,0,0,0.06) !important; }
#template_header { background-color: {$blue} !important; border-radius: 0 !important; color: #ffffff !important; border: none !important; }
#template_header h1 { color: #ffffff !important; font-size: 28px !important; font-weight: 700 !important; }
#body_content { background-color: #ffffff !important; }
#body_content_inner { color: #1f2937 !important; font-family: Arial, Helvetica, sans-serif !important; font-size: 15px !important; line-height: 1.6 !important; }
.td { color: #1f2937 !important; border-color: #e5e7eb !important; }
.address, address { border: 1px solid #e5e7eb !important; border-radius: 8px !important; }
a { color: {$blue} !important; }
.button, a.button { background-color: {$blue} !important; border-color: {$blue} !important; color: #ffffff !important; border-radius: 8px !important; }
#template_footer { background: #ffffff !important; }
#template_footer #credit { color: #9ca3af !important; font-size: 12px !important; }
";
	return $css . $extra;
}
add_filter( 'woocommerce_email_styles', 'sky_email_styles', 20 );

function sky_email_order_number( $order ) {
	if ( is_object( $order ) && method_exists( $order, 'get_order_number' ) ) {
		return (string) $order->get_order_number();
	}
	return '';
}

function sky_email_subject_processing( $subject, $order ) {
	$num = sky_email_order_number( $order );
	return $num
		? sprintf( 'Order Processing — Order #%s | %s', $num, SKY_EMAIL_BRAND )
		: 'Order Processing — ' . SKY_EMAIL_BRAND;
}
add_filter( 'woocommerce_email_subject_customer_processing_order', 'sky_email_subject_processing', 20, 2 );

function sky_email_subject_completed( $subject, $order ) {
	$num = sky_email_order_number( $order );
	return $num
		? sprintf( 'Order Delivered — Order #%s | %s', $num, SKY_EMAIL_BRAND )
		: 'Order Delivered — ' . SKY_EMAIL_BRAND;
}
add_filter( 'woocommerce_email_subject_customer_completed_order', 'sky_email_subject_completed', 20, 2 );

function sky_email_subject_on_hold( $subject, $order ) {
	$num = sky_email_order_number( $order );
	return $num
		? sprintf( 'Order Confirmation — Order #%s | %s', $num, SKY_EMAIL_BRAND )
		: 'Order Confirmation — ' . SKY_EMAIL_BRAND;
}
add_filter( 'woocommerce_email_subject_customer_on_hold_order', 'sky_email_subject_on_hold', 20, 2 );

function sky_email_subject_invoice( $subject, $order ) {
	$num = sky_email_order_number( $order );
	return $num
		? sprintf( 'Order Confirmation — Order #%s | %s', $num, SKY_EMAIL_BRAND )
		: 'Order Confirmation — ' . SKY_EMAIL_BRAND;
}
add_filter( 'woocommerce_email_subject_customer_invoice', 'sky_email_subject_invoice', 20, 2 );

add_filter( 'woocommerce_email_heading_customer_processing_order', function () { return 'Order Processing'; }, 20 );
add_filter( 'woocommerce_email_heading_customer_completed_order', function () { return 'Order Delivered'; }, 20 );
add_filter( 'woocommerce_email_heading_customer_on_hold_order', function () { return 'Order Confirmation'; }, 20 );
add_filter( 'woocommerce_email_heading_customer_invoice', function () { return 'Order Confirmation'; }, 20 );

/**
 * Subtitle under the blue header for WC emails.
 */
function sky_email_subtitle_for_heading( $heading ) {
	$h = strtolower( (string) $heading );
	if ( strpos( $h, 'deliver' ) !== false || strpos( $h, 'complete' ) !== false ) {
		return 'Your eSIM is ready';
	}
	if ( strpos( $h, 'process' ) !== false ) {
		return 'We\'re preparing your eSIM';
	}
	if ( strpos( $h, 'confirm' ) !== false ) {
		return 'Thanks for your order';
	}
	return 'Welcome to ' . SKY_EMAIL_BRAND . '!';
}

function sky_email_is_order_subject( $subject ) {
	$s = strtolower( (string) $subject );
	foreach ( array(
		'order confirmation',
		'order processing',
		'order delivered',
		'order #',
		'your order',
		'sky esim',
		'sky e-sim',
		'globe esim',
		'qr code',
		'activation code',
		'esim delivery',
	) as $n ) {
		if ( strpos( $s, $n ) !== false ) {
			return true;
		}
	}
	return false;
}

function sky_email_title_from_subject( $subject ) {
	$s = strtolower( (string) $subject );
	if ( strpos( $s, 'deliver' ) !== false || strpos( $s, 'completed' ) !== false ) {
		return array( 'Order Delivered', 'Your eSIM is ready' );
	}
	if ( strpos( $s, 'process' ) !== false ) {
		return array( 'Order Processing', 'We\'re preparing your eSIM' );
	}
	if ( strpos( $s, 'confirm' ) !== false || strpos( $s, 'received' ) !== false || strpos( $s, 'invoice' ) !== false ) {
		return array( 'Order Confirmation', 'Thanks for your order' );
	}
	return array( 'Sky eSIM Update', 'Thanks for choosing Sky eSIM' );
}

/**
 * Build branded HTML shell around an inner body.
 */
function sky_email_wrap_html( $title, $subtitle, $inner_html, $greeting_name = '' ) {
	$blue    = SKY_EMAIL_BLUE;
	$contact = SKY_EMAIL_CONTACT;
	$brand   = SKY_EMAIL_BRAND;
	$year    = gmdate( 'Y' );
	$title_e = esc_html( $title );
	$sub_e   = esc_html( $subtitle );
	$name    = trim( (string) $greeting_name );
	$hi      = $name !== ''
		? '<p style="margin:0 0 16px;font-size:16px;line-height:1.5;font-weight:700;color:#111827;">Hi ' . esc_html( $name ) . '!</p>'
		: '';

	return '<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>' . $title_e . '</title>
</head>
<body style="margin:0;padding:0;background:#f3f4f6;font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased;">
<table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0" style="background:#f3f4f6;padding:24px 12px;">
  <tr>
    <td align="center">
      <table role="presentation" width="560" cellpadding="0" cellspacing="0" border="0" style="max-width:560px;width:100%;background:#ffffff;border-radius:12px;overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,0.06);">
        <tr>
          <td align="center" style="background:' . $blue . ';padding:36px 28px 32px;">
            <h1 style="margin:0;font-size:28px;line-height:1.25;font-weight:700;color:#ffffff;">' . $title_e . '</h1>
            <p style="margin:10px 0 0;font-size:16px;line-height:1.4;font-weight:400;color:#ffffff;">' . $sub_e . '</p>
          </td>
        </tr>
        <tr>
          <td style="padding:32px 28px 8px;background:#ffffff;font-size:15px;line-height:1.6;color:#1f2937;">
            ' . $hi . '
            ' . $inner_html . '
            <table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0" style="margin:28px 0 8px;">
              <tr>
                <td style="background:#FFF8E7;border-left:4px solid #F59E0B;border-radius:6px;padding:14px 16px;font-size:13px;line-height:1.55;color:#92400E;">
                  <strong>Security Notice:</strong> If you didn\'t place this order, contact us right away. Never share eSIM QR codes or activation details with anyone.
                </td>
              </tr>
            </table>
          </td>
        </tr>
        <tr>
          <td align="center" style="padding:28px 24px 32px;background:#ffffff;">
            <p style="margin:0 0 12px;font-size:13px;line-height:1.5;color:#4b5563;">
              Need help? Contact us at
              <a href="mailto:' . esc_attr( $contact ) . '" style="color:' . $blue . ';text-decoration:none;">' . esc_html( $contact ) . '</a>
            </p>
            <p style="margin:0 0 16px;font-size:13px;line-height:1.5;">
              <a href="https://instagram.com/skyesim" style="color:' . $blue . ';text-decoration:none;">Instagram</a>
              <span style="color:#9ca3af;">&nbsp;|&nbsp;</span>
              <a href="https://facebook.com/skyesim" style="color:' . $blue . ';text-decoration:none;">Facebook</a>
              <span style="color:#9ca3af;">&nbsp;|&nbsp;</span>
              <a href="https://youtube.com/@skyesim" style="color:' . $blue . ';text-decoration:none;">YouTube</a>
            </p>
            <p style="margin:0;font-size:12px;line-height:1.4;color:#9ca3af;">&copy; ' . esc_html( $year ) . ' ' . esc_html( $brand ) . '. All rights reserved.</p>
          </td>
        </tr>
      </table>
    </td>
  </tr>
</table>
</body>
</html>';
}

/**
 * Wrap order-related wp_mail messages that are not already branded
 * (covers custom eSIM plugins that bypass WooCommerce templates).
 */
function sky_email_wp_mail( $args ) {
	if ( empty( $args['subject'] ) || ! sky_email_is_order_subject( $args['subject'] ) ) {
		return $args;
	}

	$message = isset( $args['message'] ) ? (string) $args['message'] : '';
	if ( $message === '' ) {
		return $args;
	}
	if ( strpos( $message, 'Sky eSIM. All rights reserved' ) !== false && strpos( $message, '#0091FF' ) !== false ) {
		return $args;
	}

	list( $title, $subtitle ) = sky_email_title_from_subject( $args['subject'] );
	$orig_subject             = (string) $args['subject'];

	if ( preg_match( '/#\s*([A-Za-z0-9_-]+)/', $orig_subject, $m ) ) {
		$args['subject'] = sprintf( '%s — Order #%s | %s', $title, $m[1], SKY_EMAIL_BRAND );
	} else {
		$args['subject'] = sprintf( '%s — %s', $title, SKY_EMAIL_BRAND );
	}

	$is_html = false;
	if ( ! empty( $args['headers'] ) ) {
		$headers = is_array( $args['headers'] ) ? implode( "\n", $args['headers'] ) : (string) $args['headers'];
		$is_html = stripos( $headers, 'text/html' ) !== false;
	}
	if ( ! $is_html && preg_match( '/<\s*(html|table|div|p|br|a)\b/i', $message ) ) {
		$is_html = true;
	}

	$inner = $is_html ? $message : nl2br( esc_html( $message ) );
	if ( preg_match( '/<body[^>]*>(.*)<\/body>/is', $inner, $bm ) ) {
		$inner = $bm[1];
	}

	$args['message'] = sky_email_wrap_html( $title, $subtitle, $inner );

	if ( empty( $args['headers'] ) ) {
		$args['headers'] = array( 'Content-Type: text/html; charset=UTF-8' );
	} elseif ( is_array( $args['headers'] ) ) {
		$has = false;
		foreach ( $args['headers'] as $h ) {
			if ( stripos( (string) $h, 'content-type:' ) !== false ) {
				$has = true;
				break;
			}
		}
		if ( ! $has ) {
			$args['headers'][] = 'Content-Type: text/html; charset=UTF-8';
		}
	} elseif ( stripos( (string) $args['headers'], 'content-type:' ) === false ) {
		$args['headers'] .= "\r\nContent-Type: text/html; charset=UTF-8";
	}

	return $args;
}
add_filter( 'wp_mail', 'sky_email_wp_mail', 20 );