<?php
namespace App\Controllers\Admin;

use App\Core\AdminBaseController;
use Db\Database;

class ReportController extends AdminBaseController {
    private $db;
    public function __construct(Database $db) { $this->db = $db; }

    public function index() {
        $this->checkLogin(); $this->checkAdmin();
        $dateFrom = $_GET['from'] ?? date('Y-m-d', strtotime('-7 days'));
        $dateTo = $_GET['to'] ?? date('Y-m-d');

        $reportService = new \App\Services\ReportService($this->db);

        // 总体统计
        $overview = $reportService->getOverviewStats($dateFrom, $dateTo);
        extract($overview); // totalBet, totalWin, profit, profitRate, totalDeposit, totalWithdraw, totalCommission, totalRebate, totalUsers, newUsers, activeUsers

        // 日明细统计
        $dailyStats = $reportService->getDailyStats($dateFrom, $dateTo);

        // 用户排行（投注前20）
        $topUsers = $reportService->getTopUsers($dateFrom, $dateTo, 20);

        // 代理报表
        $agentStats = $reportService->getAgentStats($dateFrom, $dateTo);

        // 用户输赢明细
        $winLossData = $reportService->getUserWinLoss($dateFrom, $dateTo);
        $userSummary = $winLossData['summary'];

        $this->render('Admin/reports.php', compact(
            'dateFrom','dateTo','totalBet','totalWin','profit','profitRate',
            'totalDeposit','totalWithdraw','totalCommission','totalRebate',
            'totalUsers','newUsers','activeUsers','dailyStats','topUsers','agentStats',
            'userSummary'
        ));
    }

    /**
     * CSV 导出
     */
    public function export() {
        $this->checkLogin(); $this->checkAdmin();
        $dateFrom = $_GET['from'] ?? date('Y-m-d', strtotime('-7 days'));
        $dateTo = $_GET['to'] ?? date('Y-m-d');

        $reportService = new \App\Services\ReportService($this->db);

        // 通过 Service 获取数据
        $dailyStats = $reportService->getDailyStats($dateFrom, $dateTo);
        $topUsers = $reportService->getTopUsers($dateFrom, $dateTo, 0); // 不限条数
        $winLossData = $reportService->getUserWinLoss($dateFrom, $dateTo);
        $userSummary = $winLossData['summary'];
        $userWinLossRaw = $winLossData['raw'];

        // 输出 CSV
        header('Content-Type: text/csv; charset=utf-8');
        header('Content-Disposition: attachment; filename="report_' . $dateFrom . '_' . $dateTo . '.csv"');
        // BOM 头（Excel 兼容中文）
        echo "\xEF\xBB\xBF";
        $out = fopen('php://output', 'w');

        // 日明细
        fputcsv($out, ['=== 日明细报表 ===']);
        fputcsv($out, ['日期', '投注额', '派彩额', '利润', '投注笔数', '中奖笔数', '胜率']);
        foreach ($dailyStats as $day) {
            $totalBet = floatval($day['total_bet'] ?? 0);
            $totalWin = floatval($day['total_win'] ?? 0);
            $betCount = intval($day['bet_count'] ?? 0);
            $winCount = intval($day['win_count'] ?? 0);
            $winRate = $betCount > 0 ? round($winCount / $betCount * 100, 1) . '%' : '0%';
            fputcsv($out, [
                $day['date'],
                number_format($totalBet, 2, '.', ''),
                number_format($totalWin, 2, '.', ''),
                number_format($totalBet - $totalWin, 2, '.', ''),
                $betCount,
                $winCount,
                $winRate
            ]);
        }

        fputcsv($out, []);
        fputcsv($out, ['=== 用户投注排行 ===']);
        fputcsv($out, ['排名', '用户名', '投注额', '派彩额', '平台盈亏', '投注笔数']);
        $rank = 1;
        foreach ($topUsers as $user) {
            fputcsv($out, [
                $rank++,
                $user['username'],
                number_format(floatval($user['total_bet']), 2, '.', ''),
                number_format(floatval($user['total_win']), 2, '.', ''),
                number_format(floatval($user['profit']), 2, '.', ''),
                intval($user['bet_count'])
            ]);
        }

        // 用户输赢明细
        fputcsv($out, []);
        fputcsv($out, ['=== 用户输赢明细 ===']);
        fputcsv($out, ['用户名', '当前余额', '总投注', '总派彩', '平台盈亏(投注-派彩)', '投注笔数', '中奖笔数', '胜率']);
        foreach ($userSummary as $ud) {
            $tb = $ud['total_bet'];
            $tw = $ud['total_win'];
            $bc = $ud['bet_count'];
            $wc = $ud['win_count'];
            $wr = $bc > 0 ? round($wc / $bc * 100, 1) . '%' : '0%';
            fputcsv($out, [
                $ud['username'],
                number_format($ud['balance'], 2, '.', ''),
                number_format($tb, 2, '.', ''),
                number_format($tw, 2, '.', ''),
                number_format($tb - $tw, 2, '.', ''),
                $bc, $wc, $wr
            ]);
        }

        // 用户日输赢明细
        fputcsv($out, []);
        fputcsv($out, ['=== 用户日输赢明细 ===']);
        fputcsv($out, ['用户名', '日期', '投注额', '派彩额', '平台盈亏', '笔数']);
        foreach ($userWinLossRaw as $dd) {
            $tb = floatval($dd['total_bet']);
            $tw = floatval($dd['total_win']);
            fputcsv($out, [
                $dd['username'], $dd['date'],
                number_format($tb, 2, '.', ''),
                number_format($tw, 2, '.', ''),
                number_format($tb - $tw, 2, '.', ''),
                intval($dd['bet_count'])
            ]);
        }

        fclose($out);
        exit;
    }

    private function json($data) { header('Content-Type: application/json'); echo json_encode($data); }
}