<?php
declare(strict_types=1);
require_once __DIR__ . '/../db/config.php';

$tenant_id = 1;

$filter_project = (int)($_GET['project_id'] ?? 0);
$filter_employee = (int)($_GET['employee_id'] ?? 0);
$filter_type = (int)($_GET['labour_type_id'] ?? 0);
$filter_evidence = (int)($_GET['evidence_type_id'] ?? 0);
$filter_start = $_GET['start_date'] ?? '';
$filter_end = $_GET['end_date'] ?? '';

$where = ["le.tenant_id = ?"];
$params = [$tenant_id];

if ($filter_project) {
    $where[] = "le.project_id = ?";
    $params[] = $filter_project;
}
if ($filter_employee) {
    $where[] = "le.employee_id = ?";
    $params[] = $filter_employee;
}
if ($filter_type) {
    $where[] = "le.labour_type_id = ?";
    $params[] = $filter_type;
}
if ($filter_evidence) {
    $where[] = "le.evidence_type_id = ?";
    $params[] = $filter_evidence;
}
if ($filter_start) {
    $where[] = "le.entry_date >= ?";
    $params[] = $filter_start;
}
if ($filter_end) {
    $where[] = "le.entry_date <= ?";
    $params[] = $filter_end;
}

$where_clause = implode(" AND ", $where);

$stmt = db()->prepare("
    SELECT le.entry_date, e.name as employee_name, p.name as project_name, le.hours, lt.name as labour_type, et.name as evidence_type, le.notes
    FROM labour_entries le
    JOIN projects p ON le.project_id = p.id
    JOIN employees e ON le.employee_id = e.id
    LEFT JOIN labour_types lt ON le.labour_type_id = lt.id
    LEFT JOIN evidence_types et ON le.evidence_type_id = et.id
    WHERE $where_clause
    ORDER BY le.entry_date DESC
");
$stmt->execute($params);
$data = $stmt->fetchAll(PDO::FETCH_ASSOC);

$filename_suffix = date('Y-m-d_H-i-s');
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=labour_export_' . $filename_suffix . '.csv');

$output = fopen('php://output', 'w');
fputcsv($output, ['Date', 'Employee', 'Project', 'Hours', 'Labour Type', 'Evidence Type', 'Notes']);

foreach ($data as $row) {
    fputcsv($output, $row);
}
fclose($output);
exit;