<?php

namespace App\Http\Controllers\Employer;

use App\Http\Controllers\Controller;
use App\Models\SupportTicket;
use App\Models\SupportTicketReply;
use App\Models\User;
use Illuminate\Http\Request;
use Inertia\Inertia;

class SupportTicketController extends Controller
{
    private function resolveEmployer(Request $request)
    {
        $sess = session('user');
        $sessId = is_array($sess) ? ($sess['id'] ?? null) : ($sess->id ?? null);
        
        if (!$sessId) {
            $user = User::where('role', 'employer')->first();
            if ($user) {
                session(['user' => (object)[
                    'id' => $user->id,
                    'name' => $user->name,
                    'email' => $user->email,
                    'role' => 'employer',
                    'subscription_status' => $user->subscription_status ?? 'active',
                ]]);
            }
            return $user;
        }
        
        return User::find($sessId);
    }

    public function index(Request $request)
    {
        $user = $this->resolveEmployer($request);
        if (!$user) {
            return redirect()->route('employer.login');
        }

        $tickets = SupportTicket::where('user_id', $user->id)
            ->orderBy('created_at', 'desc')
            ->get()
            ->map(function ($ticket) {
                return [
                    'id' => $ticket->id,
                    'ticket_number' => $ticket->ticket_number,
                    'subject' => $ticket->subject,
                    'status' => $ticket->status,
                    'priority' => $ticket->priority,
                    'created_at' => $ticket->created_at->format('Y-m-d H:i'),
                    'updated_at' => $ticket->updated_at->diffForHumans(),
                ];
            });

        return Inertia::render('Employer/Support/Index', [
            'tickets' => $tickets,
        ]);
    }

    public function create(Request $request)
    {
        $user = $this->resolveEmployer($request);
        if (!$user) {
            return redirect()->route('employer.login');
        }

        return Inertia::render('Employer/Support/Create');
    }

    public function store(Request $request)
    {
        $user = $this->resolveEmployer($request);
        if (!$user) {
            return redirect()->route('employer.login');
        }

        $request->validate([
            'subject' => 'required|string|max:255',
            'description' => 'required|string',
            'priority' => 'required|string|in:low,medium,high',
        ]);

        $ticket = SupportTicket::create([
            'ticket_number' => 'TKT-' . rand(100000, 999999),
            'user_id' => $user->id,
            'subject' => $request->subject,
            'description' => $request->description,
            'priority' => $request->priority,
            'status' => 'open',
        ]);

        return redirect()->route('employer.support.show', $ticket->id)
            ->with('success', 'Ticket created successfully.');
    }

    public function show(Request $request, $id)
    {
        $user = $this->resolveEmployer($request);
        if (!$user) {
            return redirect()->route('employer.login');
        }

        $ticket = SupportTicket::where('user_id', $user->id)->findOrFail($id);

        $replies = SupportTicketReply::where('support_ticket_id', $ticket->id)
            ->with(['user', 'worker'])
            ->orderBy('created_at', 'asc')
            ->get()
            ->map(function ($reply) {
                return [
                    'id' => $reply->id,
                    'message' => $reply->message,
                    'sender_name' => $reply->sender_name,
                    'is_admin' => $reply->user && $reply->user->role === 'admin',
                    'is_developer_response' => (bool)$reply->is_developer_response,
                    'created_at' => $reply->created_at->format('Y-m-d H:i'),
                ];
            });

        return Inertia::render('Employer/Support/Show', [
            'ticket' => [
                'id' => $ticket->id,
                'ticket_number' => $ticket->ticket_number,
                'subject' => $ticket->subject,
                'description' => $ticket->description,
                'status' => $ticket->status,
                'priority' => $ticket->priority,
                'created_at' => $ticket->created_at->format('Y-m-d H:i'),
            ],
            'replies' => $replies,
        ]);
    }

    public function reply(Request $request, $id)
    {
        $user = $this->resolveEmployer($request);
        if (!$user) {
            return redirect()->route('employer.login');
        }

        $ticket = SupportTicket::where('user_id', $user->id)->findOrFail($id);

        if ($ticket->status === 'closed') {
            return redirect()->back()->with('error', 'Cannot reply to a closed ticket.');
        }

        $request->validate([
            'message' => 'required|string',
        ]);

        SupportTicketReply::create([
            'support_ticket_id' => $ticket->id,
            'user_id' => $user->id,
            'message' => $request->message,
        ]);

        // Reopen ticket if resolved/closed was updated
        if ($ticket->status === 'resolved') {
            $ticket->update(['status' => 'open']);
        }

        return redirect()->route('employer.support.show', $ticket->id)
            ->with('success', 'Reply posted successfully.');
    }
}