{% extends "core/base.html" %}

{% block title %}Invite Assistant - Inventory Management System{% endblock %}

{% block page_title %}Invite Assistant{% endblock %}
{% load custom_filters %}

{% block header_actions %}
<a href="{% url 'assistants_list' %}" class="btn btn-sm btn-outline-secondary">
    <i class="fas fa-arrow-left me-1"></i>Back to List
</a>
{% endblock %}

{% block content %}
<div class="container-fluid">
    <div class="row">
        <div class="col-lg-8 mx-auto">
            <div class="card shadow">
                <div class="card-header bg-white py-3">
                    <h5 class="mb-0">
                        <i class="fas fa-user-plus me-2 text-primary"></i>
                        Invite New Assistant
                    </h5>
                </div>
                <div class="card-body">
                    <form method="POST">
                        {% csrf_token %}
                        
                        <!-- Email Field -->
                        <div class="mb-4">
                            <label class="form-label fw-semibold">Email Address *</label>
                            <div class="input-group">
                                <span class="input-group-text">
                                    <i class="fas fa-envelope"></i>
                                </span>
                                <input type="email" 
                                       class="form-control {% if form.email.errors %}is-invalid{% endif %}" 
                                       name="email" 
                                       value="{{ form.email.value|default:'' }}"
                                       placeholder="assistant@example.com"
                                       required
                                       autocomplete="off">
                            </div>
                            {% if form.email.errors %}
                                <div class="invalid-feedback d-block">
                                    {{ form.email.errors.0 }}
                                </div>
                            {% endif %}
                            <div class="form-text">
                                Enter the email address of the person you want to invite.
                            </div>
                        </div>
                        
                        <!-- Role Selection -->
                        <div class="mb-4">
                            <label class="form-label fw-semibold">Role *</label>
                            <div class="row g-3">
                                {% for value, label in role_choices %}
                                <div class="col-md-3">
                                    <div class="form-check card-role">
                                        <input class="form-check-input" 
                                               type="radio" 
                                               name="role" 
                                               id="role{{ forloop.counter }}" 
                                               value="{{ value }}"
                                               {% if form.role.value == value or forloop.first and not form.role.value %}checked{% endif %}>
                                        <label class="form-check-label w-100" for="role{{ forloop.counter }}">
                                            <div class="card text-center h-100">
                                                <div class="card-body">
                                                    <div class="mb-2">
                                                        {% if value == 'manager' %}
                                                            <i class="fas fa-user-tie fa-2x text-primary"></i>
                                                        {% elif value == 'cashier' %}
                                                            <i class="fas fa-cash-register fa-2x text-success"></i>
                                                        {% elif value == 'stock_keeper' %}
                                                            <i class="fas fa-boxes fa-2x text-warning"></i>
                                                        {% elif value == 'admin' %}
                                                            <i class="fas fa-user-shield fa-2x text-danger"></i>
                                                        {% else %}
                                                            <i class="fas fa-user fa-2x text-info"></i>
                                                        {% endif %}
                                                    </div>
                                                    <h6 class="card-title mb-1">{{ label }}</h6>
                                                    <p class="card-text small text-muted mb-0">
                                                        {% if value == 'manager' %}
                                                            Full access
                                                        {% elif value == 'cashier' %}
                                                            Sales & transactions
                                                        {% elif value == 'stock_keeper' %}
                                                            Inventory management
                                                        {% elif value == 'admin' %}
                                                            Complete control
                                                        {% else %}
                                                            View only
                                                        {% endif %}
                                                    </p>
                                                </div>
                                            </div>
                                        </label>
                                    </div>
                                </div>
                                {% endfor %}
                            </div>
                            {% if form.role.errors %}
                                <div class="invalid-feedback d-block">
                                    {{ form.role.errors.0 }}
                                </div>
                            {% endif %}
                        </div>
                        
                        <!-- Permissions -->
                        <div class="mb-4">
                            <label class="form-label fw-semibold">Additional Permissions</label>
                            <div class="row g-3">
                                <div class="col-md-3">
                                    <div class="form-check card">
                                        <div class="card-body">
                                            <input class="form-check-input" 
                                                   type="checkbox" 
                                                   name="can_manage_products" 
                                                   id="can_manage_products"
                                                   {% if form.can_manage_products.value %}checked{% endif %}>
                                            <label class="form-check-label fw-semibold" for="can_manage_products">
                                                <i class="fas fa-boxes text-primary me-2"></i>
                                                Manage Products
                                            </label>
                                            <p class="small text-muted mt-1 mb-0">
                                                Add, edit, and delete products
                                            </p>
                                        </div>
                                    </div>
                                </div>
                                
                                <div class="col-md-3">
                                    <div class="form-check card">
                                        <div class="card-body">
                                            <input class="form-check-input" 
                                                   type="checkbox" 
                                                   name="can_view_reports" 
                                                   id="can_view_reports"
                                                   {% if form.can_view_reports.value %}checked{% endif %}>
                                            <label class="form-check-label fw-semibold" for="can_view_reports">
                                                <i class="fas fa-chart-line text-success me-2"></i>
                                                View Reports
                                            </label>
                                            <p class="small text-muted mt-1 mb-0">
                                                Access sales and analytics reports
                                            </p>
                                        </div>
                                    </div>
                                </div>
                                
                                <div class="col-md-3">
                                    <div class="form-check card">
                                        <div class="card-body">
                                            <input class="form-check-input" 
                                                   type="checkbox" 
                                                   name="can_manage_users" 
                                                   id="can_manage_users"
                                                   {% if form.can_manage_users.value %}checked{% endif %}>
                                            <label class="form-check-label fw-semibold" for="can_manage_users">
                                                <i class="fas fa-users text-warning me-2"></i>
                                                Manage Users
                                            </label>
                                            <p class="small text-muted mt-1 mb-0">
                                                Invite and manage other assistants
                                            </p>
                                        </div>
                                    </div>
                                </div>
                                
                                <div class="col-md-3">
                                    <div class="form-check card">
                                        <div class="card-body">
                                            <input class="form-check-input" 
                                                   type="checkbox" 
                                                   name="can_manage_settings" 
                                                   id="can_manage_settings"
                                                   {% if form.can_manage_settings.value %}checked{% endif %}>
                                            <label class="form-check-label fw-semibold" for="can_manage_settings">
                                                <i class="fas fa-cog text-danger me-2"></i>
                                                Manage Settings
                                            </label>
                                            <p class="small text-muted mt-1 mb-0">
                                                Modify business settings
                                            </p>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                        
                        <!-- Subscription Limit Warning -->
                        {% if subscription and subscription.plan.max_users <= assistants|filter:"is_active=True,invitation_accepted_at__isnull=False"|length|add:"1" %}
                        <div class="alert alert-warning">
                            <i class="fas fa-exclamation-triangle me-2"></i>
                            You've reached the maximum number of users ({{ subscription.plan.max_users }}) for your current plan.
                            <a href="{% url 'subscription_plans' %}" class="alert-link">Upgrade your plan</a> to add more users.
                        </div>
                        {% endif %}
                        
                        <!-- Submit Button -->
                        <div class="d-flex justify-content-between mt-4">
                            <a href="{% url 'assistants_list' %}" class="btn btn-outline-secondary">
                                <i class="fas fa-times me-2"></i>Cancel
                            </a>
                            <button type="submit" class="btn btn-primary" 
                                    {% if subscription and subscription.plan.max_users <= assistants|filter:"is_active=True,invitation_accepted_at__isnull=False"|length|add:"1" %}disabled{% endif %}>
                                <i class="fas fa-paper-plane me-2"></i>Send Invitation
                            </button>
                        </div>
                    </form>
                </div>
            </div>
            
            <!-- Current Plan Info -->
            {% if subscription %}
            <div class="card shadow mt-4">
                <div class="card-header bg-light py-3">
                    <h6 class="mb-0">
                        <i class="fas fa-info-circle me-2 text-info"></i>
                        Current Plan: {{ subscription.plan.name }}
                    </h6>
                </div>
                <div class="card-body">
                    <div class="row">
                        <div class="col-md-6">
                            <p class="mb-2">
                                <strong>Users Limit:</strong> {{ subscription.plan.max_users }} users
                            </p>
                            <div class="progress mb-3" style="height: 10px;">
                                {% with active_users=assistants|filter:"is_active=True,invitation_accepted_at__isnull=False"|length|add:"1" %}
                                {% widthratio active_users subscription.plan.max_users 100 as percentage %}
                                <div class="progress-bar {% if percentage > 80 %}bg-warning{% else %}bg-success{% endif %}" 
                                     role="progressbar" 
                                     style="width: {{ percentage }}%"
                                     aria-valuenow="{{ active_users }}" 
                                     aria-valuemin="0" 
                                     aria-valuemax="{{ subscription.plan.max_users }}">
                                </div>
                                {% endwith %}
                            </div>
                            <p class="small text-muted mb-0">
                                Currently using: {{ assistants|filter:"is_active=True,invitation_accepted_at__isnull=False"|length|add:"1" }}/{{ subscription.plan.max_users }} users
                            </p>
                        </div>
                        <div class="col-md-6 text-end">
                            <a href="{% url 'subscription_plans' %}" class="btn btn-outline-primary">
                                <i class="fas fa-crown me-2"></i>Upgrade Plan
                            </a>
                        </div>
                    </div>
                </div>
            </div>
            {% endif %}
        </div>
    </div>
</div>

<style>
.card-role .card {
    border: 2px solid transparent;
    transition: all 0.3s;
    cursor: pointer;
}

.card-role .form-check-input:checked + .form-check-label .card {
    border-color: #4361ee;
    background-color: rgba(67, 97, 238, 0.05);
}

.card-role .form-check-input {
    position: absolute;
    opacity: 0;
}

.form-check.card {
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 0;
    transition: all 0.3s;
}

.form-check.card:hover {
    border-color: #4361ee;
    background-color: rgba(67, 97, 238, 0.02);
}

.form-check.card .form-check-input {
    margin-left: 0;
    position: relative;
}

.form-check.card .card-body {
    padding: 1rem;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeaa7;
}

.progress {
    border-radius: 10px;
    overflow: hidden;
}
</style>

<script>
document.addEventListener('DOMContentLoaded', function() {
    // Role card selection
    const roleCards = document.querySelectorAll('.card-role');
    roleCards.forEach(card => {
        card.addEventListener('click', function() {
            const radioInput = this.querySelector('input[type="radio"]');
            radioInput.checked = true;
            
            // Update all cards
            roleCards.forEach(c => {
                c.querySelector('.card').classList.remove('active');
            });
            this.querySelector('.card').classList.add('active');
        });
    });
    
    // Form validation
    const form = document.querySelector('form');
    const emailInput = form.querySelector('input[name="email"]');
    
    form.addEventListener('submit', function(e) {
        if (!emailInput.value.trim()) {
            e.preventDefault();
            emailInput.classList.add('is-invalid');
            alert('Please enter an email address.');
            return;
        }
        
        // Validate email format
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        if (!emailRegex.test(emailInput.value)) {
            e.preventDefault();
            emailInput.classList.add('is-invalid');
            alert('Please enter a valid email address.');
            return;
        }
        
        // Check subscription limit
        {% if subscription and subscription.plan.max_users <= assistants|filter:"is_active=True,invitation_accepted_at__isnull=False"|length|add:"1" %}
        e.preventDefault();
        alert('You have reached the maximum number of users for your current plan. Please upgrade to add more users.');
        return;
        {% endif %}
    });
    
    // Real-time email validation
    emailInput.addEventListener('input', function() {
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        if (this.value && !emailRegex.test(this.value)) {
            this.classList.add('is-invalid');
        } else {
            this.classList.remove('is-invalid');
        }
    });
});
</script>
{% endblock %}