/**
 * Multi-Approver Request Email Template
 */

import { MultiApproverRequestData } from './types';
import { getEmailFooter, getPrioritySection, getApprovalChain, getEmailHeader, HeaderStyles, wrapRichText, getResponsiveStyles, getEmailContainerStyles } from './helpers';
import { getBrandedHeader } from './branding.config';

export function getMultiApproverRequestEmail(data: MultiApproverRequestData): string {
  return `
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="format-detection" content="telephone=no">
    <title>Multi-Level Approval Request</title>
    ${getResponsiveStyles()}
</head>
<body style="margin: 0; padding: 0; font-family: Arial, Helvetica, sans-serif; background-color: #f4f4f4;">
    <table role="presentation" style="width: 100%; border-collapse: collapse; background-color: #f4f4f4;" cellpadding="0" cellspacing="0">
        <tr>
            <td style="padding: 40px 0;">
                <table role="presentation" class="email-container" style="${getEmailContainerStyles()}" cellpadding="0" cellspacing="0">
                    <!-- Header -->
                    ${getEmailHeader(getBrandedHeader({
                      title: 'Multi-Level Approval Request',
                      ...HeaderStyles.info
                    }))}
                    
                    <!-- Content -->
                    <tr>
                        <td style="padding: 40px 30px;">
                            <p style="margin: 0 0 20px; color: #333333; font-size: 16px; line-height: 1.6;">
                                Dear <strong style="color: #667eea;">${data.approverName}</strong>,
                            </p>
                            
                            <p style="margin: 0 0 30px; color: #666666; font-size: 16px; line-height: 1.6;">
                                <strong style="color: #333333;">${data.initiatorName}</strong> has submitted a request that requires approval from multiple approvers. Your review and approval are needed to proceed.
                            </p>
                            
                            <!-- Request Details Box with Level Info -->
                            <table role="presentation" style="width: 100%; border-collapse: collapse; background-color: #f8f9fa; border-radius: 6px; margin-bottom: 30px;" cellpadding="0" cellspacing="0">
                                <tr>
                                    <td style="padding: 25px;">
                                        <h2 style="margin: 0 0 20px; color: #333333; font-size: 18px; font-weight: 600;">Request Details</h2>
                                        
                                        <table role="presentation" style="width: 100%; border-collapse: collapse;" cellpadding="0" cellspacing="0">
                                            <tr>
                                                <td style="padding: 8px 0; color: #666666; font-size: 14px; width: 140px;">
                                                    <strong>Request ID:</strong>
                                                </td>
                                                <td style="padding: 8px 0; color: #333333; font-size: 14px;">
                                                    ${data.requestId}
                                                </td>
                                            </tr>
                                            ${data.requestTitle ? `
                                            <tr>
                                                <td style="padding: 8px 0; color: #666666; font-size: 14px;">
                                                    <strong>Title:</strong>
                                                </td>
                                                <td style="padding: 8px 0; color: #333333; font-size: 14px;">
                                                    ${data.requestTitle}
                                                </td>
                                            </tr>
                                            ` : ''}
                                            <tr>
                                                <td style="padding: 8px 0; color: #666666; font-size: 14px;">
                                                    <strong>Initiator:</strong>
                                                </td>
                                                <td style="padding: 8px 0; color: #333333; font-size: 14px;">
                                                    ${data.initiatorName}
                                                </td>
                                            </tr>
                                            <tr>
                                                <td style="padding: 8px 0; color: #666666; font-size: 14px;">
                                                    <strong>Your Level:</strong>
                                                </td>
                                                <td style="padding: 8px 0; color: #333333; font-size: 14px;">
                                                    Approver ${data.approverLevel} of ${data.totalApprovers}
                                                </td>
                                            </tr>
                                            <tr>
                                                <td style="padding: 8px 0; color: #666666; font-size: 14px;">
                                                    <strong>Request Type:</strong>
                                                </td>
                                                <td style="padding: 8px 0; color: #333333; font-size: 14px;">
                                                    ${data.requestType}
                                                </td>
                                            </tr>
                                        </table>
                                    </td>
                                </tr>
                            </table>
                            
                            <!-- Approval Chain -->
                            <div style="margin-bottom: 30px;">
                                <h3 style="margin: 0 0 15px; color: #333333; font-size: 16px; font-weight: 600;">Approval Chain:</h3>
                                <table role="presentation" style="width: 100%; border-collapse: collapse; background-color: #f8f9fa; border-radius: 6px;" cellpadding="0" cellspacing="0">
                                    <tr>
                                        <td style="padding: 20px;">
                                            ${getApprovalChain(data.approversList)}
                                        </td>
                                    </tr>
                                </table>
                            </div>
                            
                            <!-- Description (supports rich text HTML including tables) -->
                            <div style="margin-bottom: 30px;">
                                <h3 style="margin: 0 0 15px; color: #333333; font-size: 16px; font-weight: 600;">Description:</h3>
                                <div style="padding: 15px; background-color: #f8f9fa; border-left: 4px solid #667eea; border-radius: 4px; overflow-x: auto;">
                                    ${wrapRichText(data.requestDescription)}
                                </div>
                            </div>
                            
                            <!-- Priority Section (dynamic) -->
                            ${getPrioritySection(data.priority)}
                            
                            <!-- Sequential Approval Note -->
                            <div style="padding: 15px; background-color: #fff3cd; border-left: 4px solid #ffc107; border-radius: 4px; margin-bottom: 30px;">
                                <p style="margin: 0; color: #856404; font-size: 13px; line-height: 1.6;">
                                    <strong>Note:</strong> This request requires approval from all designated approvers. The process will continue to the next approver only after you approve.
                                </p>
                            </div>
                            
                            <!-- View Details Button -->
                            <table role="presentation" style="width: 100%; border-collapse: collapse; margin-bottom: 20px;" cellpadding="0" cellspacing="0">
                                <tr>
                                    <td style="text-align: center;">
                                        <a href="${data.viewDetailsLink}" class="cta-button" style="display: inline-block; padding: 15px 40px; background-color: #1a1a1a; color: #ffffff; text-decoration: none; text-align: center; border-radius: 6px; font-size: 16px; font-weight: 600; box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2); min-width: 200px;">
                                            View Request Details
                                        </a>
                                    </td>
                                </tr>
                            </table>
                            
                            <p style="margin: 0; color: #666666; font-size: 14px; line-height: 1.6; text-align: center;">
                                Click the button above to review and take action on this request.
                            </p>
                        </td>
                    </tr>
                    
                    ${getEmailFooter(data.companyName)}
                </table>
            </td>
        </tr>
    </table>
</body>
</html>
  `;
}

