{% extends "base.html" %}

{% block title %}Edit Schedule - SneakyScanner{% endblock %}

{% block content %}
<div class="row mt-4">
    <div class="col-12">
        <div class="d-flex justify-content-between align-items-center mb-4">
            <h1 style="color: #60a5fa;">Edit Schedule</h1>
            <a href="{{ url_for('main.schedules') }}" class="btn btn-secondary">
                <i class="bi bi-arrow-left"></i> Back to Schedules
            </a>
        </div>
    </div>
</div>

<div class="row">
    <div class="col-lg-8">
        <!-- Loading State -->
        <div id="loading" class="text-center py-5">
            <div class="spinner-border text-primary" role="status">
                <span class="visually-hidden">Loading...</span>
            </div>
            <p class="mt-3 text-muted">Loading schedule...</p>
        </div>

        <!-- Error State -->
        <div id="error-state" style="display: none;" class="alert alert-danger">
            <strong>Error:</strong> <span id="error-message"></span>
        </div>

        <!-- Edit Form -->
        <form id="edit-schedule-form" style="display: none;">
            <input type="hidden" id="schedule-id">

            <!-- Basic Information Card -->
            <div class="card mb-4">
                <div class="card-header">
                    <h5 class="mb-0" style="color: #60a5fa;">Basic Information</h5>
                </div>
                <div class="card-body">
                    <!-- Schedule Name -->
                    <div class="mb-3">
                        <label for="schedule-name" class="form-label">Schedule Name <span class="text-danger">*</span></label>
                        <input type="text" class="form-control" id="schedule-name" name="name"
                               placeholder="e.g., Daily Infrastructure Scan"
                               required>
                    </div>

                    <!-- Config File (read-only) -->
                    <div class="mb-3">
                        <label for="config-file" class="form-label">Configuration File</label>
                        <input type="text" class="form-control" id="config-file" readonly>
                        <small class="form-text text-muted">Configuration file cannot be changed after creation</small>
                    </div>

                    <!-- Enable/Disable -->
                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" id="schedule-enabled"
                                   name="enabled">
                            <label class="form-check-label" for="schedule-enabled">
                                Schedule enabled
                            </label>
                        </div>
                    </div>

                    <!-- Metadata -->
                    <div class="row">
                        <div class="col-md-6">
                            <small class="text-muted">
                                <strong>Created:</strong> <span id="created-at">-</span>
                            </small>
                        </div>
                        <div class="col-md-6">
                            <small class="text-muted">
                                <strong>Last Modified:</strong> <span id="updated-at">-</span>
                            </small>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Cron Expression Card -->
            <div class="card mb-4">
                <div class="card-header">
                    <h5 class="mb-0" style="color: #60a5fa;">Schedule Configuration</h5>
                </div>
                <div class="card-body">
                    <!-- Quick Templates -->
                    <div class="mb-3">
                        <label class="form-label">Quick Templates:</label>
                        <div class="btn-group-vertical btn-group-sm w-100" role="group">
                            <button type="button" class="btn btn-outline-secondary text-start" onclick="setCron('0 0 * * *')">
                                <strong>Daily at Midnight</strong> <code class="float-end">0 0 * * *</code>
                            </button>
                            <button type="button" class="btn btn-outline-secondary text-start" onclick="setCron('0 2 * * *')">
                                <strong>Daily at 2 AM</strong> <code class="float-end">0 2 * * *</code>
                            </button>
                            <button type="button" class="btn btn-outline-secondary text-start" onclick="setCron('0 */6 * * *')">
                                <strong>Every 6 Hours</strong> <code class="float-end">0 */6 * * *</code>
                            </button>
                            <button type="button" class="btn btn-outline-secondary text-start" onclick="setCron('0 0 * * 0')">
                                <strong>Weekly (Sunday at Midnight)</strong> <code class="float-end">0 0 * * 0</code>
                            </button>
                            <button type="button" class="btn btn-outline-secondary text-start" onclick="setCron('0 0 1 * *')">
                                <strong>Monthly (1st at Midnight)</strong> <code class="float-end">0 0 1 * *</code>
                            </button>
                        </div>
                    </div>

                    <!-- Manual Cron Entry -->
                    <div class="mb-3">
                        <label for="cron-expression" class="form-label">
                            Cron Expression <span class="text-danger">*</span>
                        </label>
                        <input type="text" class="form-control font-monospace" id="cron-expression"
                               name="cron_expression" placeholder="0 2 * * *"
                               oninput="validateCron()" required>
                        <small class="form-text text-muted">
                            Format: <code>minute hour day month weekday</code> (UTC timezone)
                        </small>
                    </div>

                    <!-- Cron Validation Feedback -->
                    <div id="cron-feedback" class="alert" style="display: none;"></div>

                    <!-- Run Times Info -->
                    <div class="row">
                        <div class="col-md-6">
                            <div class="alert alert-info">
                                <strong>Last Run:</strong><br>
                                <span id="last-run">Never</span>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="alert alert-info">
                                <strong>Next Run:</strong><br>
                                <span id="next-run">Not scheduled</span>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Execution History Card -->
            <div class="card mb-4">
                <div class="card-header">
                    <h5 class="mb-0" style="color: #60a5fa;">Execution History</h5>
                </div>
                <div class="card-body">
                    <div id="history-loading" class="text-center py-3">
                        <div class="spinner-border spinner-border-sm text-primary"></div>
                        <span class="ms-2 text-muted">Loading history...</span>
                    </div>
                    <div id="history-content" style="display: none;">
                        <p class="text-muted">Last 10 scans triggered by this schedule:</p>
                        <div class="table-responsive">
                            <table class="table table-sm">
                                <thead>
                                    <tr>
                                        <th>Scan ID</th>
                                        <th>Started</th>
                                        <th>Status</th>
                                        <th>Duration</th>
                                    </tr>
                                </thead>
                                <tbody id="history-tbody">
                                    <!-- Populated by JavaScript -->
                                </tbody>
                            </table>
                        </div>
                        <div id="history-empty" style="display: none;" class="text-center py-3 text-muted">
                            No executions yet
                        </div>
                    </div>
                </div>
            </div>

            <!-- Action Buttons -->
            <div class="card">
                <div class="card-body">
                    <div class="d-flex justify-content-between">
                        <div>
                            <button type="button" class="btn btn-danger" onclick="deleteSchedule()">
                                <i class="bi bi-trash"></i> Delete Schedule
                            </button>
                            <button type="button" class="btn btn-secondary" onclick="testRun()">
                                <i class="bi bi-play-fill"></i> Test Run Now
                            </button>
                        </div>
                        <div>
                            <a href="{{ url_for('main.schedules') }}" class="btn btn-secondary me-2">Cancel</a>
                            <button type="submit" class="btn btn-primary" id="submit-btn">
                                <i class="bi bi-check-circle"></i> Save Changes
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        </form>
    </div>

    <!-- Help Sidebar -->
    <div class="col-lg-4">
        <div class="card sticky-top" style="top: 20px;">
            <div class="card-header">
                <h5 class="mb-0" style="color: #60a5fa;">Cron Expression Help</h5>
            </div>
            <div class="card-body">
                <h6>Field Format:</h6>
                <table class="table table-sm">
                    <thead>
                        <tr>
                            <th>Field</th>
                            <th>Values</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr>
                            <td>Minute</td>
                            <td>0-59</td>
                        </tr>
                        <tr>
                            <td>Hour</td>
                            <td>0-23</td>
                        </tr>
                        <tr>
                            <td>Day</td>
                            <td>1-31</td>
                        </tr>
                        <tr>
                            <td>Month</td>
                            <td>1-12</td>
                        </tr>
                        <tr>
                            <td>Weekday</td>
                            <td>0-6 (0=Sunday)</td>
                        </tr>
                    </tbody>
                </table>

                <h6 class="mt-3">Special Characters:</h6>
                <ul class="list-unstyled">
                    <li><code>*</code> - Any value</li>
                    <li><code>*/n</code> - Every n units</li>
                    <li><code>1,2,3</code> - Specific values</li>
                    <li><code>1-5</code> - Range of values</li>
                </ul>

                <div class="alert alert-warning mt-3">
                    <strong>Note:</strong> All times are in UTC timezone.
                </div>
            </div>
        </div>
    </div>
</div>

<script>
let scheduleData = null;

// Get schedule ID from URL
const scheduleId = parseInt(window.location.pathname.split('/')[2]);

// Load schedule data
async function loadSchedule() {
    try {
        const response = await fetch(`/api/schedules/${scheduleId}`);

        if (!response.ok) {
            throw new Error(`HTTP ${response.status}: ${response.statusText}`);
        }

        scheduleData = await response.json();

        // Populate form
        populateForm(scheduleData);

        // Load execution history
        loadHistory();

        // Hide loading, show form
        document.getElementById('loading').style.display = 'none';
        document.getElementById('edit-schedule-form').style.display = 'block';

    } catch (error) {
        console.error('Error loading schedule:', error);
        document.getElementById('loading').style.display = 'none';
        document.getElementById('error-state').style.display = 'block';
        document.getElementById('error-message').textContent = error.message;
    }
}

// Populate form with schedule data
function populateForm(schedule) {
    document.getElementById('schedule-id').value = schedule.id;
    document.getElementById('schedule-name').value = schedule.name;
    document.getElementById('config-file').value = schedule.config_file;
    document.getElementById('cron-expression').value = schedule.cron_expression;
    document.getElementById('schedule-enabled').checked = schedule.enabled;

    // Metadata
    document.getElementById('created-at').textContent = new Date(schedule.created_at).toLocaleString();
    document.getElementById('updated-at').textContent = new Date(schedule.updated_at).toLocaleString();

    // Run times
    document.getElementById('last-run').textContent = schedule.last_run
        ? formatRelativeTime(schedule.last_run) + ' (' + new Date(schedule.last_run).toLocaleString() + ')'
        : 'Never';

    document.getElementById('next-run').textContent = schedule.next_run && schedule.enabled
        ? formatRelativeTime(schedule.next_run) + ' (' + new Date(schedule.next_run).toLocaleString() + ')'
        : (schedule.enabled ? 'Calculating...' : 'Disabled');

    // Validate cron
    validateCron();
}

// Load execution history
async function loadHistory() {
    try {
        // Note: This would ideally be a separate API endpoint
        // For now, we'll fetch scans filtered by schedule_id
        const response = await fetch(`/api/scans?schedule_id=${scheduleId}&limit=10`);

        if (!response.ok) {
            throw new Error(`HTTP ${response.status}`);
        }

        const data = await response.json();
        const scans = data.scans || [];

        renderHistory(scans);

        document.getElementById('history-loading').style.display = 'none';
        document.getElementById('history-content').style.display = 'block';

    } catch (error) {
        console.error('Error loading history:', error);
        document.getElementById('history-loading').innerHTML = '<p class="text-danger">Failed to load history</p>';
    }
}

// Render history table
function renderHistory(scans) {
    const tbody = document.getElementById('history-tbody');
    tbody.innerHTML = '';

    if (scans.length === 0) {
        document.querySelector('#history-content .table-responsive').style.display = 'none';
        document.getElementById('history-empty').style.display = 'block';
        return;
    }

    document.querySelector('#history-content .table-responsive').style.display = 'block';
    document.getElementById('history-empty').style.display = 'none';

    scans.forEach(scan => {
        const row = document.createElement('tr');
        row.classList.add('schedule-row');
        row.style.cursor = 'pointer';
        row.onclick = () => window.location.href = `/scans/${scan.id}`;

        const duration = scan.end_time
            ? Math.round((new Date(scan.end_time) - new Date(scan.timestamp)) / 1000) + 's'
            : '-';

        row.innerHTML = `
            <td class="mono"><a href="/scans/${scan.id}">#${scan.id}</a></td>
            <td>${new Date(scan.timestamp).toLocaleString()}</td>
            <td>${getStatusBadge(scan.status)}</td>
            <td>${duration}</td>
        `;

        tbody.appendChild(row);
    });
}

// Get status badge
function getStatusBadge(status) {
    const badges = {
        'running': '<span class="badge bg-primary">Running</span>',
        'completed': '<span class="badge bg-success">Completed</span>',
        'failed': '<span class="badge bg-danger">Failed</span>',
        'pending': '<span class="badge bg-warning">Pending</span>'
    };
    return badges[status] || '<span class="badge bg-secondary">' + status + '</span>';
}

// Format relative time
function formatRelativeTime(timestamp) {
    if (!timestamp) return 'Never';

    const now = new Date();
    const date = new Date(timestamp);
    const diffMs = date - now;
    const diffMinutes = Math.abs(Math.floor(diffMs / 60000));
    const diffHours = Math.abs(Math.floor(diffMs / 3600000));

    if (diffMs < 0) {
        if (diffMinutes < 1) return 'Just now';
        if (diffMinutes < 60) return `${diffMinutes} minutes ago`;
        if (diffHours < 24) return `${diffHours} hours ago`;
        return date.toLocaleString();
    } else {
        if (diffMinutes < 1) return 'In less than a minute';
        if (diffMinutes < 60) return `In ${diffMinutes} minutes`;
        if (diffHours < 24) return `In ${diffHours} hours`;
        return date.toLocaleString();
    }
}

// Set cron from template
function setCron(expression) {
    document.getElementById('cron-expression').value = expression;
    validateCron();
}

// Validate cron (basic client-side)
function validateCron() {
    const expression = document.getElementById('cron-expression').value.trim();
    const feedback = document.getElementById('cron-feedback');

    if (!expression) {
        feedback.style.display = 'none';
        return;
    }

    const parts = expression.split(/\s+/);
    if (parts.length !== 5) {
        feedback.className = 'alert alert-danger';
        feedback.textContent = 'Invalid: Must have exactly 5 fields';
        feedback.style.display = 'block';
        return;
    }

    feedback.className = 'alert alert-success';
    feedback.textContent = 'Valid cron expression';
    feedback.style.display = 'block';
}

// Handle form submission
document.getElementById('edit-schedule-form').addEventListener('submit', async (e) => {
    e.preventDefault();

    const submitBtn = document.getElementById('submit-btn');
    const originalText = submitBtn.innerHTML;

    const formData = {
        name: document.getElementById('schedule-name').value.trim(),
        cron_expression: document.getElementById('cron-expression').value.trim(),
        enabled: document.getElementById('schedule-enabled').checked
    };

    submitBtn.disabled = true;
    submitBtn.innerHTML = '<span class="spinner-border spinner-border-sm me-2"></span>Saving...';

    try {
        const response = await fetch(`/api/schedules/${scheduleId}`, {
            method: 'PUT',
            headers: {
                'Content-Type': 'application/json',
            },
            body: JSON.stringify(formData)
        });

        if (!response.ok) {
            const error = await response.json();
            throw new Error(error.error || `HTTP ${response.status}`);
        }

        showNotification('Schedule updated successfully! Redirecting...', 'success');

        setTimeout(() => {
            window.location.href = '/schedules';
        }, 1500);

    } catch (error) {
        console.error('Error updating schedule:', error);
        showNotification(`Error: ${error.message}`, 'danger');

        submitBtn.disabled = false;
        submitBtn.innerHTML = originalText;
    }
});

// Test run
async function testRun() {
    if (!confirm('Trigger a test run of this schedule now?')) {
        return;
    }

    try {
        const response = await fetch(`/api/schedules/${scheduleId}/trigger`, {
            method: 'POST'
        });

        if (!response.ok) {
            throw new Error(`HTTP ${response.status}`);
        }

        const data = await response.json();

        showNotification(`Scan triggered! Redirecting to scan #${data.scan_id}...`, 'success');

        setTimeout(() => {
            window.location.href = `/scans/${data.scan_id}`;
        }, 1500);

    } catch (error) {
        console.error('Error triggering schedule:', error);
        showNotification(`Error: ${error.message}`, 'danger');
    }
}

// Delete schedule
async function deleteSchedule() {
    const scheduleName = document.getElementById('schedule-name').value;

    if (!confirm(`Delete schedule "${scheduleName}"?\n\nThis action cannot be undone. Associated scan history will be preserved.`)) {
        return;
    }

    try {
        const response = await fetch(`/api/schedules/${scheduleId}`, {
            method: 'DELETE'
        });

        if (!response.ok) {
            throw new Error(`HTTP ${response.status}`);
        }

        showNotification('Schedule deleted successfully! Redirecting...', 'success');

        setTimeout(() => {
            window.location.href = '/schedules';
        }, 1500);

    } catch (error) {
        console.error('Error deleting schedule:', error);
        showNotification(`Error: ${error.message}`, 'danger');
    }
}

// Show notification
function showNotification(message, type = 'info') {
    const notification = document.createElement('div');
    notification.className = `alert alert-${type} alert-dismissible fade show position-fixed`;
    notification.style.top = '20px';
    notification.style.right = '20px';
    notification.style.zIndex = '9999';
    notification.style.minWidth = '300px';

    notification.innerHTML = `
        ${message}
        <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
    `;

    document.body.appendChild(notification);

    setTimeout(() => {
        notification.remove();
    }, 5000);
}

// Load on page load
document.addEventListener('DOMContentLoaded', loadSchedule);
</script>
{% endblock %}