<?php
/**
 * E-mail notifications — one sober, responsive template for the three messages.
 * Every sentence is translatable and can be rewritten from Settings → Texts (group "E-mails").
 *
 * @package Devis_Quote_Request
 */

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

class DevisQR_Email {

	const FONT = "font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;";

	/* Palette (neutral; the accent comes from the cart button colour). */
	const C_TEXT   = '#111827';
	const C_MUTED  = '#6b7280';
	const C_LINE   = '#e5e7eb';
	const C_SOFT   = '#f9fafb';
	const C_PAGE   = '#f3f4f6';

	/* ------------------------------------------------------------------ */
	/*  Public senders                                                     */
	/* ------------------------------------------------------------------ */

	/**
	 * Customer: request received.
	 *
	 * @param object $quote Quote.
	 */
	public static function send_new_quote_customer( $quote ) {
		$user = get_userdata( $quote->user_id );
		if ( ! $user ) {
			return;
		}
		DevisQR_Texts::begin_customer_output();
		$mail = self::build_customer_received( $quote, DevisQR_Database::get_quote_items( $quote->id ), $user->display_name );
		DevisQR_Texts::end_customer_output();

		wp_mail( $user->user_email, $mail['subject'], $mail['html'], self::headers(), self::pdf_attachment( $quote ) );
	}

	/**
	 * Admin: new request.
	 *
	 * @param object $quote Quote.
	 */
	public static function send_new_quote_admin( $quote ) {
		$s = DevisQR_Settings::resolved();
		DevisQR_Texts::begin_customer_output();
		$mail = self::build_admin_new( $quote, DevisQR_Database::get_quote_items( $quote->id ) );
		DevisQR_Texts::end_customer_output();

		$recipients = array_map( 'trim', explode( ',', $s['notification_email'] ) );
		$headers    = array( 'Content-Type: text/html; charset=UTF-8' );
		$user       = get_userdata( $quote->user_id );
		if ( $user && is_email( $user->user_email ) ) {
			$headers[] = 'Reply-To: ' . $user->user_email; // Answer the customer directly from the mailbox.
		}
		wp_mail( $recipients, $mail['subject'], $mail['html'], $headers, self::pdf_attachment( $quote ) );
	}

	/**
	 * Customer: status changed.
	 *
	 * @param object $quote Quote.
	 */
	public static function send_status_update( $quote ) {
		$user = get_userdata( $quote->user_id );
		if ( ! $user ) {
			return;
		}
		DevisQR_Texts::begin_customer_output();
		$mail = self::build_customer_status( $quote, $user->display_name );
		DevisQR_Texts::end_customer_output();

		$attachments = in_array( $quote->status, array( 'quoted', 'accepted' ), true ) ? self::pdf_attachment( $quote ) : array();
		wp_mail( $user->user_email, $mail['subject'], $mail['html'], self::headers(), $attachments );
	}

	/**
	 * Test message (Settings → E-mails): the "request received" template with sample data.
	 *
	 * @param string $to Recipient.
	 * @return bool
	 */
	public static function send_test( $to ) {
		$s     = DevisQR_Settings::resolved();
		$now   = current_time( 'mysql' );
		$quote = (object) array(
			'id'               => 0,
			'quote_number'     => DevisQR_Settings::get( 'quote_prefix' ) . '-' . gmdate( 'Ym' ) . '-0001',
			'status'           => 'pending',
			'created_at'       => $now,
			'expires_at'       => gmdate( 'Y-m-d H:i:s', strtotime( $now ) + (int) $s['validity_days'] * DAY_IN_SECONDS ),
			'total_ht'         => 240.00,
			'total_tax'        => 48.00,
			'total_ttc'        => 288.00,
			'discount_percent' => 0,
			'customer_note'    => __( 'Sample message left by the customer with the request.', 'nuxwp-devis' ),
			'admin_note'       => '',
			'pdf_path'         => '',
		);
		$items = array(
			(object) array( 'product_name' => __( 'Sample product A', 'nuxwp-devis' ), 'product_sku' => 'SKU-A', 'quantity' => 2, 'line_total_ttc' => 96.00 ),
			(object) array( 'product_name' => __( 'Sample product B', 'nuxwp-devis' ), 'product_sku' => 'SKU-B', 'quantity' => 1, 'line_total_ttc' => 192.00 ),
		);

		DevisQR_Texts::begin_customer_output();
		$mail = self::build_customer_received( $quote, $items, wp_get_current_user()->display_name );
		DevisQR_Texts::end_customer_output();

		return (bool) wp_mail( $to, '[' . __( 'Test', 'nuxwp-devis' ) . '] ' . $mail['subject'], $mail['html'], self::headers() );
	}

	/* ------------------------------------------------------------------ */
	/*  Builders (subject + html)                                          */
	/* ------------------------------------------------------------------ */

	/**
	 * Customer: request received.
	 *
	 * @param object $quote Quote.
	 * @param array  $items Items.
	 * @param string $name  Customer display name.
	 * @return array {subject, html}
	 */
	private static function build_customer_received( $quote, $items, $name ) {
		$s           = DevisQR_Settings::resolved();
		$account_url = wc_get_account_endpoint_url( DevisQR_Settings::account_endpoint() );
		$days        = max( 1, (int) $s['validity_days'] );
		/* translators: %d: number of days */
		$days_text = sprintf( _n( '%d day', '%d days', $days, 'nuxwp-devis' ), $days );

		/* translators: 1: quote number, 2: site name */
		$subject = sprintf( __( 'Your quote request %1$s — %2$s', 'nuxwp-devis' ), $quote->quote_number, self::site_name() );

		$html = self::greeting( $name )
			/* translators: %s: quote number */
			. self::p( sprintf( esc_html__( 'We have received your quote request %s.', 'nuxwp-devis' ), '<strong>' . esc_html( $quote->quote_number ) . '</strong>' ) )
			. self::p( esc_html__( 'Our team is reviewing your cart and will send you the final quote shortly.', 'nuxwp-devis' ) )
			/* translators: %s: duration, e.g. "15 days" */
			. self::p( sprintf( esc_html__( 'The quote will remain valid for %s, subject to product availability.', 'nuxwp-devis' ), '<strong>' . esc_html( $days_text ) . '</strong>' ) )
			. self::quote_card( $quote, false )
			. self::section_title( __( 'Quote details', 'nuxwp-devis' ) )
			. self::items_table( $items )
			. self::totals_block( $quote );

		if ( ! empty( $quote->customer_note ) ) {
			$html .= self::note_box( __( 'Your message', 'nuxwp-devis' ), $quote->customer_note );
		}

		$html .= self::p( esc_html__( 'To view your quote and turn it into an order, open the “My quotes” section of your account.', 'nuxwp-devis' ), 'margin-top:20px;' )
			. self::button( $account_url, __( 'View my quotes', 'nuxwp-devis' ) )
			. self::contact_line( $s );

		/* translators: %s: quote number */
		$preheader = sprintf( __( 'Your quote request %s has been received.', 'nuxwp-devis' ), $quote->quote_number );

		return array( 'subject' => $subject, 'html' => self::wrap( $html, $preheader ) );
	}

	/**
	 * Admin: new request.
	 *
	 * @param object $quote Quote.
	 * @param array  $items Items.
	 * @return array {subject, html}
	 */
	private static function build_admin_new( $quote, $items ) {
		$user    = get_userdata( $quote->user_id );
		$company = $user ? get_user_meta( $user->ID, 'billing_company', true ) : '';
		$phone   = $user ? get_user_meta( $user->ID, 'billing_phone', true ) : '';
		$name    = $user ? $user->display_name : __( 'Deleted user', 'nuxwp-devis' );

		$admin_url = admin_url( 'admin.php?page=devisqr-quotes#/quote/' . (int) $quote->id );

		/* translators: 1: quote number, 2: customer name, 3: total */
		$subject = sprintf( __( 'New quote request %1$s — %2$s (%3$s)', 'nuxwp-devis' ), $quote->quote_number, $name, DevisQR_Helpers::price_text( $quote->total_ttc ) );

		$rows = array(
			array( __( 'Customer', 'nuxwp-devis' ), esc_html( $name ) ),
		);
		if ( $company ) {
			$rows[] = array( __( 'Company', 'nuxwp-devis' ), esc_html( $company ) );
		}
		if ( $user ) {
			$rows[] = array( __( 'E-mail', 'nuxwp-devis' ), '<a href="mailto:' . esc_attr( $user->user_email ) . '" style="color:' . self::C_TEXT . ';">' . esc_html( $user->user_email ) . '</a>' );
		}
		if ( $phone ) {
			$rows[] = array( __( 'Phone', 'nuxwp-devis' ), esc_html( $phone ) );
		}

		$html = self::title( __( 'New quote request received', 'nuxwp-devis' ) )
			. self::quote_card( $quote, false )
			. self::section_title( __( 'Customer information', 'nuxwp-devis' ) )
			. self::kv_table( $rows );

		if ( ! empty( $quote->customer_note ) ) {
			$html .= self::note_box( __( 'Customer message', 'nuxwp-devis' ), $quote->customer_note );
		}

		$html .= self::section_title( __( 'Requested products', 'nuxwp-devis' ) )
			. self::items_table( $items )
			. self::totals_block( $quote )
			. self::button( $admin_url, __( 'Process the quote', 'nuxwp-devis' ) );

		return array( 'subject' => $subject, 'html' => self::wrap( $html, $subject ) );
	}

	/**
	 * Customer: status changed.
	 *
	 * @param object $quote Quote.
	 * @param string $name  Customer display name.
	 * @return array {subject, html}
	 */
	private static function build_customer_status( $quote, $name ) {
		$s           = DevisQR_Settings::resolved();
		$labels      = DevisQR_Helpers::status_labels();
		$label       = isset( $labels[ $quote->status ] ) ? $labels[ $quote->status ] : $quote->status;
		$account_url = wc_get_account_endpoint_url( DevisQR_Settings::account_endpoint() );

		$messages = array(
			'pending'   => __( 'Your quote is back under review by our team.', 'nuxwp-devis' ),
			'quoted'    => __( 'Our team has priced your quote. You can review it in your account.', 'nuxwp-devis' ),
			'accepted'  => __( 'Your quote has been accepted. You can now proceed to payment from your account.', 'nuxwp-devis' ),
			'rejected'  => __( 'Your quote has been declined. Feel free to contact us for more information.', 'nuxwp-devis' ),
			'expired'   => __( 'Your quote has expired. You can submit a new quote request at any time.', 'nuxwp-devis' ),
			'converted' => __( 'Your quote has been turned into an order. Thank you!', 'nuxwp-devis' ),
		);
		$message = isset( $messages[ $quote->status ] ) ? $messages[ $quote->status ] : $messages['quoted'];

		/* translators: 1: quote number, 2: status label, 3: site name */
		$subject = sprintf( __( 'Quote %1$s — %2$s — %3$s', 'nuxwp-devis' ), $quote->quote_number, $label, self::site_name() );

		$cta_text = 'accepted' === $quote->status ? __( 'Accept and pay', 'nuxwp-devis' ) : __( 'View my quote', 'nuxwp-devis' );

		$html = self::greeting( $name )
			. self::p( esc_html( $message ) )
			. self::quote_card( $quote, in_array( $quote->status, array( 'quoted', 'accepted' ), true ), $label )
			. self::totals_block( $quote );

		if ( ! empty( $quote->admin_note ) ) {
			$html .= self::note_box( __( 'Message from our team', 'nuxwp-devis' ), $quote->admin_note );
		}

		$html .= self::button( $account_url, $cta_text )
			. self::contact_line( $s );

		/* translators: 1: quote number, 2: status label */
		$preheader = sprintf( __( 'Quote %1$s: %2$s', 'nuxwp-devis' ), $quote->quote_number, $label );

		return array( 'subject' => $subject, 'html' => self::wrap( $html, $preheader ) );
	}

	/* ------------------------------------------------------------------ */
	/*  Layout                                                             */
	/* ------------------------------------------------------------------ */

	/**
	 * Accent colour: cart button background, filterable.
	 *
	 * @return string
	 */
	private static function accent() {
		$style  = DevisQR_Settings::get( 'style_cart' );
		$accent = ( is_array( $style ) && ! empty( $style['bg'] ) ) ? self::hex( $style['bg'] ) : '';
		$accent = $accent ? $accent : '#1e293b';

		/**
		 * Filter the accent colour used in e-mails (header line, buttons).
		 *
		 * @param string $accent Hex colour.
		 */
		$filtered = self::hex( (string) apply_filters( 'devisqr_email_accent_color', $accent ) );
		return $filtered ? $filtered : $accent;
	}

	/**
	 * Normalise a hex colour (#abc or #aabbcc) to 6 digits, or '' when invalid.
	 *
	 * @param string $value Colour.
	 * @return string
	 */
	private static function hex( $value ) {
		$value = trim( (string) $value );
		if ( preg_match( '/\A#([0-9a-fA-F]{3})\z/', $value, $m ) ) {
			return '#' . $m[1][0] . $m[1][0] . $m[1][1] . $m[1][1] . $m[1][2] . $m[1][2];
		}
		return preg_match( '/\A#[0-9a-fA-F]{6}\z/', $value ) ? $value : '';
	}

	/**
	 * Decoded site name.
	 *
	 * @return string
	 */
	private static function site_name() {
		return wp_specialchars_decode( get_bloginfo( 'name' ), ENT_QUOTES );
	}

	/**
	 * Logo URL (see DevisQR_Helpers::logo()).
	 *
	 * @return string
	 */
	private static function logo_url() {
		$logo = DevisQR_Helpers::logo();
		return $logo ? $logo['url'] : '';
	}

	/**
	 * Page wrapper: logo/name, accent rule, white card, company footer.
	 *
	 * @param string $content   Inner HTML.
	 * @param string $preheader Hidden preview text.
	 * @return string
	 */
	private static function wrap( $content, $preheader = '' ) {
		$s         = DevisQR_Settings::resolved();
		$site_name = self::site_name();
		$site_url  = home_url();
		$accent    = self::accent();
		$logo      = self::logo_url();

		$brand = $logo
			? '<img src="' . esc_url( $logo ) . '" alt="' . esc_attr( $site_name ) . '" height="44" style="display:block;height:44px;width:auto;max-width:220px;border:0;">'
			: '<span style="' . self::FONT . 'font-size:22px;font-weight:700;color:' . self::C_TEXT . ';letter-spacing:-0.3px;">' . esc_html( $site_name ) . '</span>';

		$address = array_filter( array( $s['company_address'], trim( $s['company_postcode'] . ' ' . $s['company_city'] ) ) );
		$footer  = '<p style="' . self::FONT . 'font-size:12px;color:' . self::C_MUTED . ';margin:0 0 4px;line-height:1.6;"><strong style="color:' . self::C_TEXT . ';">' . esc_html( $s['company_name'] ) . '</strong>'
			. ( $address ? '<br>' . esc_html( implode( ' · ', $address ) ) : '' )
			. ( $s['company_phone'] ? '<br>' . esc_html( $s['company_phone'] ) : '' )
			. '</p>'
			. '<p style="' . self::FONT . 'font-size:11px;color:#9ca3af;margin:8px 0 0;line-height:1.6;">'
			/* translators: %s: site link */
			. sprintf( esc_html__( 'This message was sent by %s', 'nuxwp-devis' ), '<a href="' . esc_url( $site_url ) . '" style="color:#9ca3af;">' . esc_html( $site_name ) . '</a>' )
			. '</p>';

		return '<!DOCTYPE html>
<html lang="' . esc_attr( get_bloginfo( 'language' ) ) . '" xmlns="http://www.w3.org/1999/xhtml">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta name="x-apple-disable-message-reformatting">
	<title>' . esc_html( $site_name ) . '</title>
</head>
<body style="margin:0;padding:0;background-color:' . self::C_PAGE . ';">
	' . ( $preheader ? '<div style="display:none;max-height:0;overflow:hidden;mso-hide:all;">' . esc_html( $preheader ) . '</div>' : '' ) . '
	<table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:' . self::C_PAGE . ';">
		<tr><td align="center" style="padding:28px 12px;">
			<table role="presentation" width="600" cellpadding="0" cellspacing="0" border="0" style="max-width:600px;width:100%;">
				<tr><td style="padding:0 4px 18px;"><a href="' . esc_url( $site_url ) . '" style="text-decoration:none;">' . $brand . '</a></td></tr>
				<tr><td style="height:3px;font-size:0;line-height:0;border-radius:3px 3px 0 0;" bgcolor="' . esc_attr( $accent ) . '">&nbsp;</td></tr>
				<tr><td style="background-color:#ffffff;padding:32px 36px;border:1px solid ' . self::C_LINE . ';border-top:0;border-radius:0 0 6px 6px;">' . $content . '</td></tr>
				<tr><td style="padding:22px 4px 0;">' . $footer . '</td></tr>
			</table>
		</td></tr>
	</table>
</body>
</html>';
	}

	/* ------------------------------------------------------------------ */
	/*  Blocks                                                             */
	/* ------------------------------------------------------------------ */

	/**
	 * Paragraph (inner HTML already escaped).
	 *
	 * @param string $html  Content.
	 * @param string $extra Extra CSS.
	 * @return string
	 */
	private static function p( $html, $extra = '' ) {
		return '<p style="' . self::FONT . 'font-size:15px;line-height:1.6;color:' . self::C_TEXT . ';margin:0 0 10px;' . $extra . '">' . $html . '</p>';
	}

	/**
	 * Greeting line.
	 *
	 * @param string $name Customer name.
	 * @return string
	 */
	private static function greeting( $name ) {
		/* translators: %s: customer name */
		return self::p( sprintf( esc_html__( 'Hello %s,', 'nuxwp-devis' ), esc_html( $name ) ), 'margin-bottom:16px;' );
	}

	/**
	 * Main title (admin mail).
	 *
	 * @param string $text Title.
	 * @return string
	 */
	private static function title( $text ) {
		return '<p style="' . self::FONT . 'font-size:20px;font-weight:700;line-height:1.3;color:' . self::C_TEXT . ';margin:0 0 16px;">' . esc_html( $text ) . '</p>';
	}

	/**
	 * Section title.
	 *
	 * @param string $text Title.
	 * @return string
	 */
	private static function section_title( $text ) {
		return '<p style="' . self::FONT . 'font-size:13px;font-weight:700;color:' . self::C_MUTED . ';margin:24px 0 8px;">' . esc_html( $text ) . '</p>';
	}

	/**
	 * Quote card: number · date · (valid until).
	 *
	 * @param object $quote     Quote.
	 * @param bool   $with_exp  Show the expiry date.
	 * @param string $status    Status label to show (status e-mail), or ''.
	 * @return string
	 */
	private static function quote_card( $quote, $with_exp, $status = '' ) {
		$cells = array(
			array( __( 'Quote number', 'nuxwp-devis' ), $quote->quote_number ),
		);
		if ( $status ) {
			$cells[] = array( __( 'Status', 'nuxwp-devis' ), $status );
		}
		$cells[] = array( __( 'Date', 'nuxwp-devis' ), DevisQR_Helpers::date_text( $quote->created_at ) );
		if ( $with_exp && ! empty( $quote->expires_at ) ) {
			$cells[] = array( __( 'Valid until', 'nuxwp-devis' ), DevisQR_Helpers::date_text( $quote->expires_at ) );
		}
		$html = '<table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0" style="margin:18px 0 0;background-color:' . self::C_SOFT . ';border:1px solid ' . self::C_LINE . ';border-radius:6px;"><tr>';
		foreach ( $cells as $i => $cell ) {
			$html .= '<td style="padding:14px 16px;' . ( $i ? 'border-left:1px solid ' . self::C_LINE . ';' : '' ) . '">
				<p style="' . self::FONT . 'font-size:11px;color:' . self::C_MUTED . ';margin:0 0 3px;text-transform:uppercase;letter-spacing:0.4px;">' . esc_html( $cell[0] ) . '</p>
				<p style="' . self::FONT . 'font-size:15px;font-weight:700;color:' . self::C_TEXT . ';margin:0;">' . esc_html( $cell[1] ) . '</p>
			</td>';
		}
		return $html . '</tr></table>';
	}

	/**
	 * Label / value rows.
	 *
	 * @param array $rows [[label, html], …].
	 * @return string
	 */
	private static function kv_table( $rows ) {
		$html = '<table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0">';
		foreach ( $rows as $row ) {
			$html .= '<tr>
				<td style="' . self::FONT . 'font-size:14px;color:' . self::C_MUTED . ';padding:5px 12px 5px 0;width:120px;vertical-align:top;">' . esc_html( $row[0] ) . '</td>
				<td style="' . self::FONT . 'font-size:14px;color:' . self::C_TEXT . ';padding:5px 0;">' . $row[1] . '</td>
			</tr>';
		}
		return $html . '</table>';
	}

	/**
	 * Items table.
	 *
	 * @param array $items Items.
	 * @return string
	 */
	private static function items_table( $items ) {
		$th = self::FONT . 'font-size:12px;font-weight:700;color:' . self::C_MUTED . ';padding:0 0 8px;border-bottom:1px solid ' . self::C_LINE . ';';
		$td = self::FONT . 'font-size:14px;color:' . self::C_TEXT . ';padding:10px 0;border-bottom:1px solid ' . self::C_LINE . ';line-height:1.4;vertical-align:top;';

		$html = '<table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0" style="border-collapse:collapse;">
			<tr>
				<td style="' . $th . '">' . esc_html__( 'Product', 'nuxwp-devis' ) . '</td>
				<td style="' . $th . 'text-align:center;width:50px;">' . esc_html__( 'Qty', 'nuxwp-devis' ) . '</td>
				<td style="' . $th . 'text-align:right;width:110px;">' . esc_html__( 'Total incl. tax', 'nuxwp-devis' ) . '</td>
			</tr>';

		foreach ( $items as $item ) {
			$sku = $item->product_sku ? '<br><span style="color:' . self::C_MUTED . ';font-size:12px;">' . esc_html__( 'Ref.', 'nuxwp-devis' ) . ' ' . esc_html( $item->product_sku ) . '</span>' : '';
			$html .= '<tr>
				<td style="' . $td . 'padding-right:8px;">' . esc_html( $item->product_name ) . $sku . '</td>
				<td style="' . $td . 'text-align:center;">' . esc_html( DevisQR_Helpers::qty_text( $item->quantity ) ) . '</td>
				<td style="' . $td . 'text-align:right;padding-left:8px;white-space:nowrap;">' . esc_html( DevisQR_Helpers::price_text( $item->line_total_ttc ) ) . '</td>
			</tr>';
		}

		return $html . '</table>';
	}

	/**
	 * Totals.
	 *
	 * @param object $quote Quote.
	 * @return string
	 */
	private static function totals_block( $quote ) {
		$label = self::FONT . 'font-size:14px;color:' . self::C_MUTED . ';padding:5px 0;';
		$value = self::FONT . 'font-size:14px;color:' . self::C_TEXT . ';padding:5px 0;text-align:right;white-space:nowrap;';
		$big   = self::FONT . 'font-size:17px;font-weight:700;color:' . self::C_TEXT . ';padding:10px 0 0;border-top:2px solid ' . self::C_TEXT . ';';

		$html = '<table role="presentation" cellpadding="0" cellspacing="0" border="0" align="right" style="margin:8px 0 0;min-width:240px;">';
		if ( ! empty( $quote->discount_percent ) && (float) $quote->discount_percent > 0 ) {
			$html .= '<tr><td style="' . $label . '">' . esc_html__( 'Global discount', 'nuxwp-devis' ) . '</td><td style="' . $value . '">−' . esc_html( DevisQR_Helpers::percent_text( $quote->discount_percent ) ) . '</td></tr>';
		}
		$html .= '<tr><td style="' . $label . '">' . esc_html__( 'Total excl. tax', 'nuxwp-devis' ) . '</td><td style="' . $value . '">' . esc_html( DevisQR_Helpers::price_text( $quote->total_ht ) ) . '</td></tr>
			<tr><td style="' . $label . '">' . esc_html__( 'Tax', 'nuxwp-devis' ) . '</td><td style="' . $value . '">' . esc_html( DevisQR_Helpers::price_text( $quote->total_tax ) ) . '</td></tr>
			<tr><td style="' . $big . '">' . esc_html__( 'Total incl. tax', 'nuxwp-devis' ) . '</td><td style="' . $big . 'text-align:right;padding-left:24px;white-space:nowrap;">' . esc_html( DevisQR_Helpers::price_text( $quote->total_ttc ) ) . '</td></tr>
		</table><div style="clear:both;height:0;font-size:0;line-height:0;">&nbsp;</div>';
		return $html;
	}

	/**
	 * Quoted note (customer message / team message).
	 *
	 * @param string $label Label.
	 * @param string $text  Raw text.
	 * @return string
	 */
	private static function note_box( $label, $text ) {
		return '<table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0" style="margin:20px 0 0;">
			<tr><td style="padding:12px 16px;background-color:' . self::C_SOFT . ';border-left:3px solid ' . esc_attr( self::accent() ) . ';">
				<p style="' . self::FONT . 'font-size:12px;font-weight:700;color:' . self::C_MUTED . ';margin:0 0 4px;">' . esc_html( $label ) . '</p>
				<p style="' . self::FONT . 'font-size:14px;color:' . self::C_TEXT . ';margin:0;line-height:1.6;">' . nl2br( esc_html( $text ) ) . '</p>
			</td></tr>
		</table>';
	}

	/**
	 * Button.
	 *
	 * @param string $url  URL.
	 * @param string $text Label.
	 * @return string
	 */
	private static function button( $url, $text ) {
		$accent = self::accent();
		return '<table role="presentation" cellpadding="0" cellspacing="0" border="0" style="margin:24px 0 0;">
			<tr><td style="border-radius:6px;" bgcolor="' . esc_attr( $accent ) . '">
				<a href="' . esc_url( $url ) . '" target="_blank" style="display:inline-block;' . self::FONT . 'font-size:14px;font-weight:600;color:#ffffff;text-decoration:none;padding:12px 26px;border-radius:6px;">' . esc_html( $text ) . '</a>
			</td></tr>
		</table>';
	}

	/**
	 * Contact line at the end of customer mails.
	 *
	 * @param array $s Resolved settings.
	 * @return string
	 */
	private static function contact_line( $s ) {
		$link = '<a href="mailto:' . esc_attr( $s['contact_email'] ) . '" style="color:' . self::C_TEXT . ';">' . esc_html( $s['contact_email'] ) . '</a>';
		/* translators: %s: contact e-mail link */
		return '<p style="' . self::FONT . 'font-size:13px;color:' . self::C_MUTED . ';margin:28px 0 0;padding-top:16px;border-top:1px solid ' . self::C_LINE . ';line-height:1.6;">' . sprintf( esc_html__( 'Any question? Contact us at %s', 'nuxwp-devis' ), $link ) . '</p>';
	}

	/* ------------------------------------------------------------------ */
	/*  Transport                                                          */
	/* ------------------------------------------------------------------ */

	/**
	 * Headers for customer e-mails.
	 *
	 * @return array
	 */
	private static function headers() {
		$s    = DevisQR_Settings::resolved();
		$name = str_replace( array( '<', '>', '"', "\r", "\n" ), '', self::site_name() ); // wp_mail() splits the From header on '<'.
		return array(
			'Content-Type: text/html; charset=UTF-8',
			'From: ' . trim( $name ) . ' <' . $s['from_email'] . '>',
			'Reply-To: ' . $s['contact_email'],
		);
	}

	/**
	 * Attachments (PDF if present).
	 *
	 * @param object $quote Quote.
	 * @return array
	 */
	private static function pdf_attachment( $quote ) {
		if ( empty( $quote->pdf_path ) ) {
			return array();
		}
		$path = DevisQR_Database::resolve_storage_path( $quote->pdf_path, 'pdf' );
		return $path ? array( $path ) : array();
	}
}