package inquiry

import (
	"fmt"
	"strings"
	"time"
)

// EmailTemplateData represents the data needed for the email template
type EmailTemplateData struct {
	FullName     string
	CompanyName  string
	WorkEmail    string
	PhoneNumber  string
	InquiryID    string
	CreatedAt    int64
	CompanyLogo  string
	CompanyURL   string
	SupportEmail string
}

// GenerateNewInquiryEmailTemplate generates a beautiful HTML email template for new inquiry notifications
func GenerateNewInquiryEmailTemplate(data *EmailTemplateData) string {
	// Format the creation date
	createdAt := time.Unix(data.CreatedAt, 0).Format("January 2, 2006 at 3:04 PM")

	html := `
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>New Inquiry Request - {{COMPANY_NAME}}</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8fafc;
        }
        
        .email-container {
            max-width: 600px;
            margin: 16px auto;
            background-color: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }
        
        .header {
            background: linear-gradient(0deg, #5750F1 0%, #e0e0e0 100%);
            padding: 40px 30px;
            text-align: center;
            color: white;
        }
        
        .logo {
            max-width: 200px;
            height: auto;
            margin-bottom: 20px;
            border-radius: 8px;
        }
        
        .header h1 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }
        
        .header p {
            font-size: 16px;
            opacity: 0.9;
            font-weight: 300;
        }
        
        .content {
            padding: 40px 30px;
        }
        
        .inquiry-card {
            background-color: #f8fafc;
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            padding: 30px;
            margin: 30px 0;
            position: relative;
        }
        
        .inquiry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #5750F1, #e0e0e0);
            border-radius: 12px 12px 0 0;
        }
        
        .inquiry-id {
            background-color: #5750F1;
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        
        .info-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        
        .info-item {
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
        }
        
        .info-label {
            font-size: 12px;
            color: #64748b;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        
        .info-value {
            font-size: 16px;
            color: #1e293b;
            font-weight: 500;
        }
        
        .timestamp {
            text-align: center;
            color: #64748b;
            font-size: 14px;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #e2e8f0;
        }
        
        .footer {
            background-color: #f8fafc;
            padding: 30px;
            text-align: center;
            border-top: 1px solid #e2e8f0;
        }
        
        .footer p {
            color: #64748b;
            font-size: 14px;
            margin-bottom: 10px;
        }
        
        .footer a {
            color: #5750F1;
            text-decoration: none;
        }
        
        .footer a:hover {
            text-decoration: underline;
        }
        
        @media (max-width: 600px) {
           .email-container {
                margin: 16px;
                border-radius: 0;
            }
            .content {
                padding: 20px;
            }
            
            .info-grid {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            
            .header {
                padding: 30px 20px;
            }
            
            .header h1 {
                font-size: 24px;
            }
        }
    </style>
</head>
<body>
    <div class="email-container">
        <!-- Header -->
        <div class="header">
            <h1>New Inquiry Received</h1>
            <p>A new inquiry has been submitted to the opplens system</p>
        </div>
        
        <!-- Content -->
        <div class="content">
            <div class="inquiry-card">
                <div class="inquiry-id">Identifier: {{INQUIRY_ID}}</div>
                
                <div class="info-grid">
                    <div class="info-item">
                        <div class="info-label">Full Name</div>
                        <div class="info-value">{{FULL_NAME}}</div>
                    </div>
                    
                    <div class="info-item">
                        <div class="info-label">Company Name</div>
                        <div class="info-value">{{COMPANY_NAME}}</div>
                    </div>
                    
                    <div class="info-item">
                        <div class="info-label">Work Email</div>
                        <div class="info-value">{{WORK_EMAIL}}</div>
                    </div>
                    
                    <div class="info-item">
                        <div class="info-label">Phone Number</div>
                        <div class="info-value">{{PHONE_NUMBER}}</div>
                    </div>
                </div>
                
                <div class="timestamp">
                    <strong>Submitted on:</strong> {{CREATED_AT}}
                    <br>
                    <p>This email was automatically sent from the Opplens System</p>
                </div>

            </div>
        </div>
        
    </div>
</body>
</html>`

	// Replace placeholders with actual data
	html = strings.ReplaceAll(html, "{{COMPANY_NAME}}", data.CompanyName)
	html = strings.ReplaceAll(html, "{{INQUIRY_ID}}", data.InquiryID)
	html = strings.ReplaceAll(html, "{{FULL_NAME}}", data.FullName)
	html = strings.ReplaceAll(html, "{{WORK_EMAIL}}", data.WorkEmail)
	html = strings.ReplaceAll(html, "{{PHONE_NUMBER}}", data.PhoneNumber)
	html = strings.ReplaceAll(html, "{{CREATED_AT}}", createdAt)

	return html
}

// GenerateNewInquiryEmailMessage generates a simple text message for the email
func GenerateNewInquiryEmailMessage(data *EmailTemplateData) string {
	createdAt := time.Unix(data.CreatedAt, 0).Format("January 2, 2006 at 3:04 PM")

	return fmt.Sprintf(`
New Inquiry Received

Inquiry ID: %s
Full Name: %s
Company Name: %s
Work Email: %s
Phone Number: %s
Submitted on: %s

Please check the admin panel for more details.
`,
		data.InquiryID,
		data.FullName,
		data.CompanyName,
		data.WorkEmail,
		data.PhoneNumber,
		createdAt,
	)
}
