<?php

namespace Modules\Crm\Http\Controllers;

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\CrmCallSession;
use Modules\Crm\Entities\CrmCompany;
use Modules\Crm\Entities\CrmCompanyOffer;
use Modules\Crm\Entities\CrmPhoneFollowUp;
use Modules\Crm\Utils\TelemarketingUtil;
use Yajra\DataTables\Facades\DataTables;

class TelemarketingReportController 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.view_assessments');
    }

    public function callQuality()
    {
        $this->authorizeAccess();
        $business_id = request()->session()->get('user.business_id');

        if (request()->ajax()) {
            $query = CrmCallAssessment::join('users', 'crm_call_assessments.assessed_by', '=', 'users.id')
                ->join('crm_phone_follow_ups', 'crm_call_assessments.phone_follow_up_id', '=', 'crm_phone_follow_ups.id')
                ->where('crm_phone_follow_ups.business_id', $business_id)
                ->select(
                    'users.id as user_id',
                    DB::raw("CONCAT(COALESCE(users.first_name, ''), ' ', COALESCE(users.last_name, '')) as agent_name"),
                    DB::raw('AVG(crm_call_assessments.reception_score) as avg_reception'),
                    DB::raw('AVG(crm_call_assessments.cooperation_score) as avg_cooperation'),
                    DB::raw('COUNT(crm_call_assessments.id) as total_assessments'),
                    DB::raw("SUM(CASE WHEN crm_call_assessments.gatekeeper_blocked = 1 THEN 1 ELSE 0 END) as gatekeeper_count")
                )
                ->groupBy('users.id', 'users.first_name', 'users.last_name');

            return Datatables::of($query)->make(true);
        }

        return view('crm::telemarketing.reports.call_quality');
    }

    public function funnel()
    {
        $this->authorizeAccess();
        $business_id = request()->session()->get('user.business_id');

        $stats = [
            'total_phones' => CrmPhoneFollowUp::where('business_id', $business_id)->count(),
            'contacted' => CrmPhoneFollowUp::where('business_id', $business_id)->whereIn('status', ['contacted', 'interested', 'converted'])->count(),
            'interested' => CrmPhoneFollowUp::where('business_id', $business_id)->where('status', 'interested')->count(),
            'converted' => CrmPhoneFollowUp::where('business_id', $business_id)->where('status', 'converted')->count(),
            'companies' => CrmCompany::where('business_id', $business_id)->count(),
        ];

        if (request()->ajax()) {
            return response()->json($stats);
        }

        return view('crm::telemarketing.reports.funnel')->with(compact('stats'));
    }

    public function agentPerformance()
    {
        $this->authorizeAccess();
        $business_id = request()->session()->get('user.business_id');

        if (request()->ajax()) {
            return $this->agentPerformanceQuery($business_id);
        }

        return view('crm::telemarketing.reports.agent_performance');
    }

    public function agentPerformanceApi()
    {
        $business_id = auth()->user()->business_id;

        return response()->json([
            'success' => true,
            'data' => $this->agentPerformanceQuery($business_id, false),
        ]);
    }

    protected function agentPerformanceQuery(int $business_id, bool $datatable = true)
    {
        $query = CrmCallSession::where('crm_call_sessions.business_id', $business_id)
            ->join('users', 'crm_call_sessions.user_id', '=', 'users.id')
            ->leftJoin('crm_phone_follow_ups', 'crm_call_sessions.phone_follow_up_id', '=', 'crm_phone_follow_ups.id')
            ->select(
                'users.id as user_id',
                DB::raw("CONCAT(COALESCE(users.first_name, ''), ' ', COALESCE(users.last_name, '')) as agent_name"),
                DB::raw('COUNT(crm_call_sessions.id) as total_calls'),
                DB::raw("SUM(CASE WHEN crm_call_sessions.outcome = 'answered' THEN 1 ELSE 0 END) as answered"),
                DB::raw('AVG(TIMESTAMPDIFF(SECOND, crm_call_sessions.started_at, crm_call_sessions.ended_at)) as avg_duration'),
                DB::raw('AVG(crm_phone_follow_ups.lead_score) as avg_lead_score')
            )
            ->whereNotNull('crm_call_sessions.ended_at')
            ->groupBy('users.id', 'users.first_name', 'users.last_name');

        if ($datatable) {
            return Datatables::of($query)->make(true);
        }

        return $query->get();
    }

    public function offerConversion()
    {
        $this->authorizeAccess();
        $business_id = request()->session()->get('user.business_id');

        if (request()->ajax()) {
            $query = CrmCompanyOffer::join('crm_companies', 'crm_company_offers.company_id', '=', 'crm_companies.id')
                ->join('crm_offer_catalog', 'crm_company_offers.offer_catalog_id', '=', 'crm_offer_catalog.id')
                ->where('crm_companies.business_id', $business_id)
                ->select(
                    'crm_offer_catalog.name',
                    DB::raw('COUNT(crm_company_offers.id) as total'),
                    DB::raw("SUM(CASE WHEN crm_company_offers.status = 'accepted' THEN 1 ELSE 0 END) as accepted"),
                    DB::raw('SUM(crm_offer_catalog.estimated_value) as total_value')
                )
                ->groupBy('crm_offer_catalog.id', 'crm_offer_catalog.name');

            return Datatables::of($query)->make(true);
        }

        return view('crm::telemarketing.reports.offer_conversion');
    }
}