<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\User;
use App\Models\UserActivityLog;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class UserAnalyticsController extends Controller
{
    public function index(Request $request)
    {
        $tab     = $request->input('tab', 'overview');   // overview | bots | activity | country
        $country = $request->input('country');
        $period  = (int) $request->input('period', 30);  // days
        $from    = now()->subDays($period);

        // ── Overview stats ────────────────────────────────────────────────────
        $totalReal  = User::where('role', '!=', 'admin')->count();
        $newReal    = User::where('role', '!=', 'admin')->where('created_at', '>=', $from)->count();
        $active30   = DB::table('analytics_pageviews')
            ->where('is_bot', 0)->where('created_at', '>=', $from)
            ->distinct('user_id')->whereNotNull('user_id')->count('user_id');
        $botViews   = DB::table('analytics_pageviews')
            ->where('is_bot', 1)->where('created_at', '>=', $from)->count();
        $realViews  = DB::table('analytics_pageviews')
            ->where('is_bot', 0)->where('created_at', '>=', $from)->count();

        // ── Daily new users (chart) ───────────────────────────────────────────
        $dailyNew = DB::table('users')
            ->selectRaw('DATE(created_at) as day, COUNT(*) as cnt')
            ->where('role', '!=', 'admin')
            ->where('created_at', '>=', $from)
            ->groupBy('day')->orderBy('day')
            ->pluck('cnt', 'day');

        // ── Country breakdown ─────────────────────────────────────────────────
        $countriesQuery = DB::table('analytics_pageviews')
            ->selectRaw('country, COUNT(*) as views, COUNT(DISTINCT user_id) as users')
            ->where('is_bot', 0)
            ->where('created_at', '>=', $from)
            ->whereNotNull('country')
            ->groupBy('country')
            ->orderByDesc('views');
        if ($country) $countriesQuery->where('country', $country);
        $countries = $countriesQuery->limit(50)->get();

        // ── Bot analysis ──────────────────────────────────────────────────────
        $botStats = DB::table('analytics_bot_logs')
            ->selectRaw('bot_name, action, COUNT(*) as cnt')
            ->where('created_at', '>=', $from)
            ->groupBy('bot_name', 'action')
            ->orderByDesc('cnt')
            ->limit(30)->get();

        $topBotIps = DB::table('analytics_bot_logs')
            ->selectRaw('ip, COUNT(*) as cnt')
            ->where('created_at', '>=', $from)
            ->groupBy('ip')
            ->orderByDesc('cnt')
            ->limit(20)->get();

        $blockedIps = DB::table('blocked_ips')
            ->orderByDesc('blocked_at')
            ->limit(30)->get();

        // ── User activity log ─────────────────────────────────────────────────
        $actQuery = UserActivityLog::with('user:id,name,username,avatar')
            ->where('created_at', '>=', $from);
        if ($country)    $actQuery->where('country', $country);
        if ($request->input('user_id')) $actQuery->where('user_id', $request->input('user_id'));
        if ($request->input('action'))  $actQuery->where('action', $request->input('action'));
        $actQuery->orderByDesc('created_at');
        $actLogs = $actQuery->paginate(50)->withQueryString();

        // ── Top active users ──────────────────────────────────────────────────
        $topUsers = DB::table('user_activity_logs')
            ->selectRaw('user_id, COUNT(*) as actions')
            ->where('is_bot', 0)->whereNotNull('user_id')
            ->where('created_at', '>=', $from)
            ->groupBy('user_id')->orderByDesc('actions')
            ->limit(10)->get();
        $topUserIds = $topUsers->pluck('user_id');
        $topUserMap = User::whereIn('id', $topUserIds)->get()->keyBy('id');

        // ── Action breakdown ──────────────────────────────────────────────────
        $actionBreakdown = DB::table('user_activity_logs')
            ->selectRaw('action, COUNT(*) as cnt')
            ->where('is_bot', 0)
            ->where('created_at', '>=', $from)
            ->groupBy('action')->orderByDesc('cnt')
            ->get();

        // ── Device breakdown ──────────────────────────────────────────────────
        $deviceBreakdown = DB::table('analytics_pageviews')
            ->selectRaw('device, COUNT(*) as cnt')
            ->where('is_bot', 0)->where('created_at', '>=', $from)
            ->groupBy('device')->orderByDesc('cnt')->get();

        return view('admin.analytics.users', compact(
            'tab', 'period', 'country',
            'totalReal', 'newReal', 'active30', 'botViews', 'realViews',
            'dailyNew', 'countries', 'botStats', 'topBotIps', 'blockedIps',
            'actLogs', 'topUsers', 'topUserMap', 'actionBreakdown', 'deviceBreakdown'
        ));
    }

    public function userDetail(Request $request, User $user)
    {
        $period = (int) $request->input('period', 30);
        $from   = now()->subDays($period);

        $logs = UserActivityLog::where('user_id', $user->id)
            ->where('created_at', '>=', $from)
            ->orderByDesc('created_at')
            ->paginate(50)->withQueryString();

        $actBreakdown = DB::table('user_activity_logs')
            ->selectRaw('action, COUNT(*) as cnt')
            ->where('user_id', $user->id)->where('created_at', '>=', $from)
            ->groupBy('action')->orderByDesc('cnt')->get();

        $pageviews = DB::table('analytics_pageviews')
            ->where('user_id', $user->id)->where('created_at', '>=', $from)
            ->orderByDesc('created_at')->limit(100)->get();

        $watchEvents = DB::table('analytics_watch_events as we')
            ->join('episodes as e', 'e.id', '=', 'we.episode_id')
            ->join('animes as a', 'a.id', '=', 'we.anime_id')
            ->selectRaw('we.created_at, a.title as anime_title, e.episode_number, we.percent_complete, we.seconds_watched')
            ->where('we.user_id', $user->id)->where('we.created_at', '>=', $from)
            ->orderByDesc('we.created_at')->limit(50)->get();

        return view('admin.analytics.user-detail', compact(
            'user', 'logs', 'actBreakdown', 'pageviews', 'watchEvents', 'period'
        ));
    }
}