<?php

namespace Modules\Crm\Http\Controllers;

use App\User;
use App\Utils\ModuleUtil;
use Carbon\Carbon;
use Illuminate\Routing\Controller;
use Illuminate\Support\Facades\DB;
use Modules\Crm\Entities\CrmCallAssessment;
use Modules\Crm\Entities\CrmCallQueue;
use Modules\Crm\Entities\CrmCallSession;
use Modules\Crm\Entities\CrmCompany;
use Modules\Crm\Entities\CrmPhoneFollowUp;
use Modules\Crm\Utils\TelemarketingUtil;

class TelemarketingDashboardController extends Controller
{
    protected $moduleUtil;

    public function __construct(ModuleUtil $moduleUtil)
    {
        $this->moduleUtil = $moduleUtil;
    }

    protected function authorizeAccess(): void
    {
        $business_id = request()->session()->get('user.business_id');
        TelemarketingUtil::authorizeTelemarketing($this->moduleUtil, $business_id, 'crm.telemarketing.supervisor_dashboard');
    }

    public function index()
    {
        $this->authorizeAccess();

        return view('crm::telemarketing.dashboard.index');
    }

    public function stats()
    {
        $this->authorizeAccess();
        $business_id = request()->session()->get('user.business_id');
        $today = Carbon::today();

        $activeCalls = CrmCallSession::where('business_id', $business_id)
            ->whereNull('ended_at')
            ->count();

        $queueRemaining = CrmCallQueue::where('business_id', $business_id)
            ->whereIn('status', ['available', 'locked'])
            ->whereHas('phoneFollowUp', function ($q) {
                $q->where('status', 'pending');
            })
            ->count();

        $todaySessions = CrmCallSession::where('business_id', $business_id)
            ->whereDate('started_at', $today)
            ->get();

        $answered = $todaySessions->where('outcome', 'answered')->count();
        $total = $todaySessions->count();

        $topAgents = CrmCallSession::where('crm_call_sessions.business_id', $business_id)
            ->whereDate('crm_call_sessions.started_at', $today)
            ->join('crm_phone_follow_ups', 'crm_call_sessions.phone_follow_up_id', '=', 'crm_phone_follow_ups.id')
            ->join('users', 'crm_call_sessions.user_id', '=', 'users.id')
            ->select(
                'users.id',
                DB::raw("CONCAT(COALESCE(users.first_name, ''), ' ', COALESCE(users.last_name, '')) as name"),
                DB::raw('COUNT(crm_call_sessions.id) as call_count'),
                DB::raw('AVG(crm_phone_follow_ups.lead_score) as avg_lead_score')
            )
            ->groupBy('users.id', 'users.first_name', 'users.last_name')
            ->orderByDesc('call_count')
            ->limit(10)
            ->get();

        $agents = User::where('business_id', $business_id)->user()->count();

        return response()->json([
            'active_calls' => $activeCalls,
            'queue_remaining' => $queueRemaining,
            'agents_total' => $agents,
            'today_total' => $total,
            'today_answered' => $answered,
            'answer_rate' => $total > 0 ? round(($answered / $total) * 100, 1) : 0,
            'top_agents' => $topAgents,
            'companies_count' => CrmCompany::where('business_id', $business_id)->count(),
            'interested_today' => CrmPhoneFollowUp::where('business_id', $business_id)
                ->where('status', 'interested')
                ->whereDate('last_follow_up_at', $today)
                ->count(),
            'avg_lead_score' => round((float) CrmPhoneFollowUp::where('business_id', $business_id)
                ->whereDate('last_follow_up_at', $today)
                ->whereNotNull('lead_score')
                ->avg('lead_score'), 1),
            'outcomes' => CrmCallSession::where('business_id', $business_id)
                ->whereDate('started_at', $today)
                ->select('outcome', DB::raw('COUNT(*) as cnt'))
                ->groupBy('outcome')
                ->pluck('cnt', 'outcome'),
            'live_sessions' => CrmCallSession::where('crm_call_sessions.business_id', $business_id)
                ->whereNull('crm_call_sessions.ended_at')
                ->join('crm_phone_follow_ups', 'crm_call_sessions.phone_follow_up_id', '=', 'crm_phone_follow_ups.id')
                ->join('users', 'crm_call_sessions.user_id', '=', 'users.id')
                ->select(
                    'crm_call_sessions.id',
                    'crm_phone_follow_ups.mobile_number',
                    'crm_phone_follow_ups.company_name',
                    DB::raw("CONCAT(COALESCE(users.first_name, ''), ' ', COALESCE(users.last_name, '')) as agent_name"),
                    'crm_call_sessions.started_at'
                )
                ->orderBy('crm_call_sessions.started_at')
                ->get(),
            'avg_assessment' => round((float) CrmCallAssessment::whereHas('callSession', function ($q) use ($business_id, $today) {
                $q->where('business_id', $business_id)->whereDate('started_at', $today);
            })->avg('reception_score'), 1),
        ]);
    }
}