<?php
/**
 * 碎片处理列表接口（待定逻辑，暂做基础列表） GET/POST /api/preliminary/list.php
 * 参数：page / limit / keyword / source_type / start_date / end_date
 */
require_once __DIR__ . '/../common/db.php';
require_once __DIR__ . '/../common/response.php';
require_once __DIR__ . '/../common/auth.php';

checkPermission('preliminary');

[$page, $limit] = pageParams();
$keyword   = trim($_REQUEST['keyword'] ?? '');
$sourceType = trim($_REQUEST['source_type'] ?? '');
$startDate = trim($_REQUEST['start_date'] ?? '');
$endDate   = trim($_REQUEST['end_date'] ?? '');

$where  = ['is_active = 1'];
$params = [];
if ($keyword !== '') {
    $where[] = '(company_name LIKE ? OR person_name LIKE ? OR contact_phone LIKE ? OR contact_email LIKE ? OR description LIKE ?)';
    $like = "%$keyword%";
    array_push($params, $like, $like, $like, $like, $like);
}
if ($sourceType !== '') { $where[] = 'source_type = ?'; $params[] = $sourceType; }
if ($startDate !== '') { $where[] = 'DATE(created_at) >= ?'; $params[] = $startDate; }
if ($endDate !== '') { $where[] = 'DATE(created_at) <= ?'; $params[] = $endDate; }
$whereSql = implode(' AND ', $where);

$pdo = DB::getInstance()->getPdo();

$stmt = $pdo->prepare("SELECT COUNT(*) FROM preliminary_data WHERE $whereSql");
$stmt->execute($params);
$total = (int)$stmt->fetchColumn();

$offset = ($page - 1) * $limit;
$stmt = $pdo->prepare(
    "SELECT id, source_type, company_name, person_name, contact_phone, contact_email,
            source_channel, recorded_by,
            follow_person, converted_type, converted_id, created_at, updated_at
     FROM preliminary_data
     WHERE $whereSql
     ORDER BY id DESC
     LIMIT $limit OFFSET $offset"
);
$stmt->execute($params);
$list = $stmt->fetchAll();

Response::success(['list' => $list, 'total' => $total, 'page' => $page, 'limit' => $limit]);