<?php
/**
 * 碎片处理中心 - 顶部概览接口  GET /api/fragment/stats_overview.php
 * 指标：
 *  - hard_total   硬碎片待处理数（preliminary_data 未转换）
 *  - soft_total   软碎片待处理数（四主表 is_incomplete=1）
 *  - month_new    本月新增（硬碎片本月新增 + 软碎片本月新增）
 *  - month_processed 本月处理（本月已转换硬碎片 + 本月已补全软碎片）
 *  - cumulative   累计处理（历史已转换硬碎片 + 历史已补全软碎片）
 *  - pending      待处理碎片（硬待处理 + 软待处理）
 * 说明：v1.0.50 起 preliminary_data 无 status 字段，已转换以 converted_id 非空标识
 */
require_once __DIR__ . '/../common/db.php';
require_once __DIR__ . '/../common/response.php';
require_once __DIR__ . '/../common/auth.php';

checkPermission('preliminary');

$pdo = DB::getInstance()->getPdo();
$monthStart = "DATE_FORMAT(CURDATE(), '%Y-%m-01')";

// 硬碎片待处理数（未转换）
$hardTotal = (int)$pdo->query(
    "SELECT COUNT(*) FROM preliminary_data WHERE is_active = 1 AND converted_id IS NULL"
)->fetchColumn();

// 软碎片待处理数（四主表 is_incomplete=1 之和）
$softTotal = 0;
foreach (['companies', 'persons', 'social_accounts', 'media_commercial_attributes'] as $t) {
    $softTotal += (int)$pdo->query("SELECT COUNT(*) FROM `$t` WHERE is_incomplete = 1")->fetchColumn();
}

// 本月新增硬碎片（created_at 在本月）
$hardMonthNew = (int)$pdo->query(
    "SELECT COUNT(*) FROM preliminary_data WHERE is_active = 1 AND created_at >= $monthStart"
)->fetchColumn();

// 本月新增软碎片（is_incomplete=1 且本月创建；media 的创建时间取关联 social_accounts）
$softMonthNew = 0;
foreach (['companies', 'persons', 'social_accounts'] as $t) {
    $softMonthNew += (int)$pdo->query(
        "SELECT COUNT(*) FROM `$t` WHERE is_incomplete = 1 AND created_at >= $monthStart"
    )->fetchColumn();
}
$softMonthNew += (int)$pdo->query(
    "SELECT COUNT(*) FROM media_commercial_attributes m
     WHERE m.is_incomplete = 1
       AND EXISTS (SELECT 1 FROM social_accounts sa WHERE sa.id = m.social_account_id AND sa.created_at >= $monthStart)"
)->fetchColumn();

// 本月已转换硬碎片
$hardConvertedMonth = (int)$pdo->query(
    "SELECT COUNT(*) FROM preliminary_data
     WHERE is_active = 1 AND converted_id IS NOT NULL AND processed_at >= $monthStart"
)->fetchColumn();

// 本月已补全软碎片（fragment 模块 complete 日志）
$softCompletedMonth = (int)$pdo->query(
    "SELECT COUNT(*) FROM system_logs WHERE action = 'complete' AND module = 'fragment' AND created_at >= $monthStart"
)->fetchColumn();

// 历史累计已转换硬碎片
$hardConvertedTotal = (int)$pdo->query(
    "SELECT COUNT(*) FROM preliminary_data WHERE is_active = 1 AND converted_id IS NOT NULL"
)->fetchColumn();

// 历史累计已补全软碎片
$softCompletedTotal = (int)$pdo->query(
    "SELECT COUNT(*) FROM system_logs WHERE action = 'complete' AND module = 'fragment'"
)->fetchColumn();

Response::success([
    'hard_total'       => $hardTotal,
    'soft_total'       => $softTotal,
    'month_new'        => $hardMonthNew + $softMonthNew,
    'month_processed'  => $hardConvertedMonth + $softCompletedMonth,
    'cumulative'       => $hardConvertedTotal + $softCompletedTotal,
    'pending'          => $hardTotal + $softTotal,
]);