{% extends "base.html" %}

{% block title %}Dashboard - Fire Alarm Management{% endblock %}

{% block content %}
<div class="row mb-4">
    <div class="col">
        <h1><i class="bi bi-speedometer2"></i> Dashboard</h1>
    </div>
</div>

<!-- Summary Cards -->
<div class="row mb-4">
    <div class="col-md-3">
        <div class="card bg-primary text-white">
            <div class="card-body">
                <h5 class="card-title"><i class="bi bi-briefcase"></i> Total Jobs</h5>
                <h2 class="card-text" id="totalJobs">-</h2>
            </div>
        </div>
    </div>
    <div class="col-md-3">
        <div class="card bg-success text-white">
            <div class="card-body">
                <h5 class="card-title"><i class="bi bi-currency-dollar"></i> Total Budget</h5>
                <h2 class="card-text" id="totalBudget">-</h2>
            </div>
        </div>
    </div>
    <div class="col-md-3">
        <div class="card bg-info text-white">
            <div class="card-body">
                <h5 class="card-title"><i class="bi bi-percent"></i> Avg Completion</h5>
                <h2 class="card-text" id="avgCompletion">-</h2>
            </div>
        </div>
    </div>
    <div class="col-md-3">
        <div class="card bg-warning text-dark">
            <div class="card-body">
                <h5 class="card-title"><i class="bi bi-tools"></i> Labor + Material</h5>
                <h2 class="card-text" id="laborMaterial">-</h2>
            </div>
        </div>
    </div>
</div>

<!-- Charts Row 1 -->
<div class="row mb-4">
    <div class="col-md-6">
        <div class="card">
            <div class="card-header">
                <i class="bi bi-pie-chart"></i> Jobs by Status
            </div>
            <div class="card-body">
                <canvas id="statusChart"></canvas>
            </div>
        </div>
    </div>
    <div class="col-md-6">
        <div class="card">
            <div class="card-header">
                <i class="bi bi-bar-chart"></i> Budget by Vendor
            </div>
            <div class="card-body">
                <canvas id="vendorChart"></canvas>
            </div>
        </div>
    </div>
</div>

<!-- Charts Row 2 -->
<div class="row mb-4">
    <div class="col-md-12">
        <div class="card">
            <div class="card-header">
                <i class="bi bi-graph-up"></i> Job Completion Progress
            </div>
            <div class="card-body">
                <canvas id="completionChart"></canvas>
            </div>
        </div>
    </div>
</div>

<!-- Charts Row 3 -->
<div class="row mb-4">
    <div class="col-md-6">
        <div class="card">
            <div class="card-header">
                <i class="bi bi-person"></i> Jobs by Project Manager
            </div>
            <div class="card-body">
                <canvas id="pmChart"></canvas>
            </div>
        </div>
    </div>
    <div class="col-md-6">
        <div class="card">
            <div class="card-header">
                <i class="bi bi-cash-stack"></i> Budget vs Estimates
            </div>
            <div class="card-body">
                <canvas id="budgetChart"></canvas>
            </div>
        </div>
    </div>
</div>

<!-- Recent Jobs Table -->
<div class="row">
    <div class="col">
        <div class="card">
            <div class="card-header d-flex justify-content-between align-items-center">
                <span><i class="bi bi-clock-history"></i> Recent Jobs</span>
                <a href="{{ url_for('main.jobs_list') }}" class="btn btn-sm btn-primary">View All</a>
            </div>
            <div class="card-body">
                <div class="table-responsive">
                    <table class="table table-striped table-hover">
                        <thead>
                            <tr>
                                <th>Job #</th>
                                <th>Name</th>
                                <th>PM</th>
                                <th>Budget</th>
                                <th>Progress</th>
                                <th>Actions</th>
                            </tr>
                        </thead>
                        <tbody id="recentJobsTable">
                            <tr>
                                <td colspan="6" class="text-center">Loading...</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block scripts %}
<script>
let statusChart, vendorChart, completionChart, pmChart, budgetChart;

async function loadDashboard() {
    try {
        const response = await fetch('/api/stats');
        const data = await response.json();

        // Update summary cards
        document.getElementById('totalJobs').textContent = data.total_jobs;
        document.getElementById('totalBudget').textContent = formatCurrency(data.total_budget);
        document.getElementById('avgCompletion').textContent = data.avg_completion.toFixed(1) + '%';
        document.getElementById('laborMaterial').textContent = formatCurrency(data.total_labor + data.total_material);

        // Status Pie Chart
        const statusCtx = document.getElementById('statusChart').getContext('2d');
        if (statusChart) statusChart.destroy();
        statusChart = new Chart(statusCtx, {
            type: 'doughnut',
            data: {
                labels: ['Completed', 'In Progress', 'Not Started'],
                datasets: [{
                    data: [data.completed_jobs, data.in_progress_jobs, data.not_started_jobs],
                    backgroundColor: ['#198754', '#0d6efd', '#6c757d']
                }]
            },
            options: {
                responsive: true,
                plugins: {
                    legend: { position: 'bottom' }
                }
            }
        });

        // Vendor Budget Bar Chart
        const vendorCtx = document.getElementById('vendorChart').getContext('2d');
        if (vendorChart) vendorChart.destroy();
        vendorChart = new Chart(vendorCtx, {
            type: 'bar',
            data: {
                labels: Object.keys(data.vendor_budgets),
                datasets: [{
                    label: 'Budget ($)',
                    data: Object.values(data.vendor_budgets),
                    backgroundColor: '#0d6efd'
                }]
            },
            options: {
                responsive: true,
                plugins: {
                    legend: { display: false }
                },
                scales: {
                    y: {
                        beginAtZero: true,
                        ticks: {
                            callback: value => '$' + value.toLocaleString()
                        }
                    }
                }
            }
        });

        // Completion Progress Bar Chart
        const completionCtx = document.getElementById('completionChart').getContext('2d');
        if (completionChart) completionChart.destroy();
        completionChart = new Chart(completionCtx, {
            type: 'bar',
            data: {
                labels: data.jobs_completion.map(j => j.name),
                datasets: [{
                    label: 'Completion %',
                    data: data.jobs_completion.map(j => j.completion),
                    backgroundColor: data.jobs_completion.map(j => {
                        if (j.completion >= 100) return '#198754';
                        if (j.completion > 50) return '#0d6efd';
                        if (j.completion > 0) return '#ffc107';
                        return '#6c757d';
                    })
                }]
            },
            options: {
                indexAxis: 'y',
                responsive: true,
                plugins: {
                    legend: { display: false }
                },
                scales: {
                    x: {
                        beginAtZero: true,
                        max: 100,
                        ticks: {
                            callback: value => value + '%'
                        }
                    }
                }
            }
        });

        // PM Jobs Chart
        const pmCtx = document.getElementById('pmChart').getContext('2d');
        if (pmChart) pmChart.destroy();
        pmChart = new Chart(pmCtx, {
            type: 'bar',
            data: {
                labels: Object.keys(data.pm_jobs),
                datasets: [{
                    label: 'Number of Jobs',
                    data: Object.values(data.pm_jobs).map(p => p.count),
                    backgroundColor: '#198754'
                }]
            },
            options: {
                responsive: true,
                plugins: {
                    legend: { display: false }
                },
                scales: {
                    y: {
                        beginAtZero: true,
                        ticks: { stepSize: 1 }
                    }
                }
            }
        });

        // Budget vs Estimates Chart
        const budgetCtx = document.getElementById('budgetChart').getContext('2d');
        if (budgetChart) budgetChart.destroy();
        budgetChart = new Chart(budgetCtx, {
            type: 'doughnut',
            data: {
                labels: ['Fire Alarm Budget', 'Labor Estimate', 'Material Estimate'],
                datasets: [{
                    data: [data.total_budget, data.total_labor, data.total_material],
                    backgroundColor: ['#0d6efd', '#198754', '#ffc107']
                }]
            },
            options: {
                responsive: true,
                plugins: {
                    legend: { position: 'bottom' },
                    tooltip: {
                        callbacks: {
                            label: function(context) {
                                return context.label + ': $' + context.raw.toLocaleString();
                            }
                        }
                    }
                }
            }
        });

        // Load recent jobs table
        loadRecentJobs(data.jobs_completion);

    } catch (error) {
        console.error('Error loading dashboard:', error);
    }
}

function loadRecentJobs(jobs) {
    const tbody = document.getElementById('recentJobsTable');
    if (jobs.length === 0) {
        tbody.innerHTML = '<tr><td colspan="6" class="text-center">No jobs found. <a href="/jobs/new">Add your first job</a></td></tr>';
        return;
    }

    tbody.innerHTML = jobs.slice(0, 10).map(job => `
        <tr>
            <td>${job.job_number || '-'}</td>
            <td>${job.name}</td>
            <td>${job.pm_assigned || '-'}</td>
            <td>${formatCurrency(job.budget)}</td>
            <td>
                <div class="progress" style="height: 20px;">
                    <div class="progress-bar ${getProgressClass(job.completion)}" role="progressbar"
                         style="width: ${job.completion}%;" aria-valuenow="${job.completion}"
                         aria-valuemin="0" aria-valuemax="100">
                        ${job.completion.toFixed(0)}%
                    </div>
                </div>
            </td>
            <td>
                <a href="/jobs/${job.id}" class="btn btn-sm btn-outline-primary">
                    <i class="bi bi-eye"></i>
                </a>
            </td>
        </tr>
    `).join('');
}

function formatCurrency(value) {
    return '$' + (value || 0).toLocaleString('en-US', {minimumFractionDigits: 0, maximumFractionDigits: 0});
}

function getProgressClass(completion) {
    if (completion >= 100) return 'bg-success';
    if (completion > 50) return 'bg-info';
    if (completion > 0) return 'bg-warning';
    return 'bg-secondary';
}

document.addEventListener('DOMContentLoaded', loadDashboard);
</script>
{% endblock %}