@extends('admin.layout')

@section('title', 'Database Query History')

@section('content')
<div class="container-fluid">
    <h1 class="h3 mb-4 text-gray-800">Database Query History</h1>

    <div class="row">
        <!-- Date Range Selector -->
        <div class="col-md-12 mb-4">
            <div class="card shadow">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">Date Range</h6>
                </div>
                <div class="card-body">
                    <div class="row">
                        <div class="col-md-4">
                            <div class="form-group">
                                <label for="start-date">Start Date</label>
                                <input type="date" id="start-date" class="form-control" value="{{ $startDate }}">
                            </div>
                        </div>
                        <div class="col-md-4">
                            <div class="form-group">
                                <label for="end-date">End Date</label>
                                <input type="date" id="end-date" class="form-control" value="{{ $endDate }}">
                            </div>
                        </div>
                        <div class="col-md-4">
                            <div class="form-group">
                                <label>&nbsp;</label>
                                <button id="update-range" class="btn btn-primary btn-block">Update</button>
                            </div>
                        </div>
                    </div>
                    <div class="row mt-2">
                        <div class="col-md-12">
                            <div class="btn-group" role="group">
                                <button type="button" class="btn btn-secondary" data-range="today">Today</button>
                                <button type="button" class="btn btn-secondary" data-range="yesterday">Yesterday</button>
                                <button type="button" class="btn btn-secondary" data-range="last7days">Last 7 Days</button>
                                <button type="button" class="btn btn-secondary" data-range="last30days">Last 30 Days</button>
                                <button type="button" class="btn btn-secondary" data-range="thismonth">This Month</button>
                                <button type="button" class="btn btn-secondary" data-range="lastmonth">Last Month</button>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="row">
        <!-- Daily Query Statistics -->
        <div class="col-md-12 mb-4">
            <div class="card shadow">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">Daily Query Statistics</h6>
                </div>
                <div class="card-body">
                    <div class="chart-container" style="position: relative; height:300px;">
                        <canvas id="daily-chart"></canvas>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="row">
        <!-- Hourly Query Statistics -->
        <div class="col-md-12 mb-4">
            <div class="card shadow">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">Hourly Query Statistics</h6>
                </div>
                <div class="card-body">
                    <div class="chart-container" style="position: relative; height:300px;">
                        <canvas id="hourly-chart"></canvas>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="row">
        <!-- Top Slow Queries -->
        <div class="col-md-12 mb-4">
            <div class="card shadow">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">Top Slow Queries</h6>
                </div>
                <div class="card-body">
                    <div class="table-responsive">
                        <table class="table table-bordered" id="slow-queries-table">
                            <thead>
                                <tr>
                                    <th>SQL</th>
                                    <th>Executions</th>
                                    <th>Avg Time (ms)</th>
                                    <th>Max Time (ms)</th>
                                    <th>Min Time (ms)</th>
                                    <th>Actions</th>
                                </tr>
                            </thead>
                            <tbody>
                                <tr>
                                    <td colspan="6" class="text-center">Loading...</td>
                                </tr>
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Query Details Modal -->
    <div class="modal fade" id="query-details-modal" tabindex="-1" role="dialog" aria-labelledby="query-details-modal-label" aria-hidden="true">
        <div class="modal-dialog modal-xl" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="query-details-modal-label">Query Details</h5>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <div class="modal-body">
                    <h6>SQL</h6>
                    <pre id="query-details-sql" class="bg-light p-3 mb-4"></pre>

                    <h6>Execution Trend</h6>
                    <div class="chart-container mb-4" style="position: relative; height:200px;">
                        <canvas id="query-trend-chart"></canvas>
                    </div>

                    <h6>Recent Executions</h6>
                    <div class="table-responsive">
                        <table class="table table-bordered" id="query-details-table">
                            <thead>
                                <tr>
                                    <th>Parameters</th>
                                    <th>Execution Time (ms)</th>
                                    <th>Connection</th>
                                    <th>Timestamp</th>
                                </tr>
                            </thead>
                            <tbody>
                                <tr>
                                    <td colspan="4" class="text-center">Loading...</td>
                                </tr>
                            </tbody>
                        </table>
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

@section('scripts')
<script src="https://cdn.jsdelivr.net/npm/chart.js@3.7.1/dist/chart.min.js"></script>
<script>
    // Global chart objects
    let dailyChart = null;
    let hourlyChart = null;
    let queryTrendChart = null;

    // Current date range
    let startDate = '{{ $startDate }}';
    let endDate = '{{ $endDate }}';

    // Current query hash for details
    let currentQueryHash = '';

    $(document).ready(function() {
        // Load initial data
        loadDailyStats();
        loadHourlyStats();
        loadSlowQueries();

        // Set up date range selector
        $('#update-range').click(function() {
            startDate = $('#start-date').val();
            endDate = $('#end-date').val();

            loadDailyStats();
            loadHourlyStats();
            loadSlowQueries();
        });

        // Set up quick date range buttons
        $('.btn-group button').click(function() {
            const range = $(this).data('range');
            const dates = getDateRange(range);

            $('#start-date').val(dates.start);
            $('#end-date').val(dates.end);

            startDate = dates.start;
            endDate = dates.end;

            loadDailyStats();
            loadHourlyStats();
            loadSlowQueries();
        });
    });

    function loadDailyStats() {
        $.ajax({
            url: `/admin/database/history/daily?startDate=${startDate}&endDate=${endDate}`,
            method: 'GET',
            success: function(data) {
                renderDailyChart(data);
            },
            error: function() {
                console.error('Failed to load daily statistics');
            }
        });
    }

    function loadHourlyStats() {
        $.ajax({
            url: `/admin/database/history/hourly?startDate=${startDate}&endDate=${endDate}`,
            method: 'GET',
            success: function(data) {
                renderHourlyChart(data);
            },
            error: function() {
                console.error('Failed to load hourly statistics');
            }
        });
    }

    function loadSlowQueries() {
        $.ajax({
            url: `/admin/database/history/slow-queries?startDate=${startDate}&endDate=${endDate}&limit=10`,
            method: 'GET',
            success: function(data) {
                renderSlowQueriesTable(data.queries);
            },
            error: function() {
                console.error('Failed to load slow queries');
            }
        });
    }

    function loadQueryDetails(queryHash) {
        currentQueryHash = queryHash;

        // Load query trend
        $.ajax({
            url: `/admin/database/history/query-trend/${queryHash}?startDate=${startDate}&endDate=${endDate}`,
            method: 'GET',
            success: function(data) {
                renderQueryTrendChart(data);
            },
            error: function() {
                console.error('Failed to load query trend');
            }
        });

        // Load query details
        $.ajax({
            url: `/admin/database/history/query-details/${queryHash}?limit=20`,
            method: 'GET',
            success: function(data) {
                renderQueryDetailsTable(data.details);
            },
            error: function() {
                console.error('Failed to load query details');
            }
        });
    }

    function renderDailyChart(data) {
        const ctx = document.getElementById('daily-chart').getContext('2d');

        if (dailyChart) {
            dailyChart.destroy();
        }

        dailyChart = new Chart(ctx, {
            type: 'bar',
            data: data,
            options: {
                responsive: true,
                maintainAspectRatio: false,
                scales: {
                    'y-queries': {
                        type: 'linear',
                        position: 'left',
                        title: {
                            display: true,
                            text: 'Query Count'
                        }
                    },
                    'y-time': {
                        type: 'linear',
                        position: 'right',
                        title: {
                            display: true,
                            text: 'Time (ms)'
                        }
                    }
                }
            }
        });
    }

    function renderHourlyChart(data) {
        const ctx = document.getElementById('hourly-chart').getContext('2d');

        if (hourlyChart) {
            hourlyChart.destroy();
        }

        hourlyChart = new Chart(ctx, {
            type: 'line',
            data: data,
            options: {
                responsive: true,
                maintainAspectRatio: false,
                scales: {
                    'y-queries': {
                        type: 'linear',
                        position: 'left',
                        title: {
                            display: true,
                            text: 'Query Count'
                        }
                    },
                    'y-time': {
                        type: 'linear',
                        position: 'right',
                        title: {
                            display: true,
                            text: 'Time (ms)'
                        }
                    }
                }
            }
        });
    }

    function renderQueryTrendChart(data) {
        const ctx = document.getElementById('query-trend-chart').getContext('2d');

        if (queryTrendChart) {
            queryTrendChart.destroy();
        }

        queryTrendChart = new Chart(ctx, {
            type: 'line',
            data: data,
            options: {
                responsive: true,
                maintainAspectRatio: false,
                scales: {
                    'y-count': {
                        type: 'linear',
                        position: 'left',
                        title: {
                            display: true,
                            text: 'Execution Count'
                        }
                    },
                    'y-time': {
                        type: 'linear',
                        position: 'right',
                        title: {
                            display: true,
                            text: 'Time (ms)'
                        }
                    }
                }
            }
        });
    }

    function renderSlowQueriesTable(queries) {
        if (!queries || queries.length === 0) {
            $('#slow-queries-table tbody').html('<tr><td colspan="6" class="text-center">No slow queries found</td></tr>');
            return;
        }

        const html = queries.map(query => `
            <tr>
                <td><code>${escapeHtml(query.sql)}</code></td>
                <td>${query.execution_count}</td>
                <td>${parseFloat(query.avg_time).toFixed(2)}</td>
                <td>${parseFloat(query.max_time).toFixed(2)}</td>
                <td>${parseFloat(query.min_time).toFixed(2)}</td>
                <td>
                    <button class="btn btn-sm btn-primary view-details" data-query-hash="${query.query_hash}" data-sql="${escapeHtml(query.sql)}">
                        View Details
                    </button>
                </td>
            </tr>
        `).join('');

        $('#slow-queries-table tbody').html(html);

        // Set up view details buttons
        $('.view-details').click(function() {
            const queryHash = $(this).data('query-hash');
            const sql = $(this).data('sql');

            $('#query-details-sql').text(sql);
            $('#query-details-modal-label').text('Query Details');
            $('#query-details-modal').modal('show');

            loadQueryDetails(queryHash);
        });
    }

    function renderQueryDetailsTable(details) {
        if (!details || details.length === 0) {
            $('#query-details-table tbody').html('<tr><td colspan="4" class="text-center">No details found</td></tr>');
            return;
        }

        const html = details.map(detail => `
            <tr>
                <td><code>${escapeHtml(detail.parameters)}</code></td>
                <td>${parseFloat(detail.execution_time).toFixed(2)}</td>
                <td>${detail.connection_name}</td>
                <td>${new Date(detail.timestamp * 1000).toLocaleString()}</td>
            </tr>
        `).join('');

        $('#query-details-table tbody').html(html);
    }

    function getDateRange(range) {
        const today = new Date();
        let start = new Date();
        let end = new Date();

        switch (range) {
            case 'today':
                // Start and end are already today
                break;

            case 'yesterday':
                start.setDate(today.getDate() - 1);
                end.setDate(today.getDate() - 1);
                break;

            case 'last7days':
                start.setDate(today.getDate() - 6);
                break;

            case 'last30days':
                start.setDate(today.getDate() - 29);
                break;

            case 'thismonth':
                start = new Date(today.getFullYear(), today.getMonth(), 1);
                end = new Date(today.getFullYear(), today.getMonth() + 1, 0);
                break;

            case 'lastmonth':
                start = new Date(today.getFullYear(), today.getMonth() - 1, 1);
                end = new Date(today.getFullYear(), today.getMonth(), 0);
                break;
        }

        return {
            start: formatDate(start),
            end: formatDate(end)
        };
    }

    function formatDate(date) {
        const year = date.getFullYear();
        const month = String(date.getMonth() + 1).padStart(2, '0');
        const day = String(date.getDate()).padStart(2, '0');

        return `${year}-${month}-${day}`;
    }

    function escapeHtml(unsafe) {
        return unsafe
            .replace(/&/g, "&amp;")
            .replace(/</g, "&lt;")
            .replace(/>/g, "&gt;")
            .replace(/"/g, "&quot;")
            .replace(/'/g, "&#039;");
    }
</script>
@endsection