<?php

namespace App\Http\Controllers\Frontdesk;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Frontdesk\Concerns\ScopesToAccount;
use App\Models\AuditLog;
use App\Models\Visitor;
use App\Models\WatchlistEntry;
use App\Services\Frontdesk\WatchlistService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class WatchlistController extends Controller
{
    use ScopesToAccount;

    public function index(Request $request): View
    {
        $this->authorizeAbility($request, 'watchlist.view');
        $organization = $this->organization($request);

        $entries = WatchlistEntry::owned($this->ownerRef($request))
            ->where('organization_id', $organization->id)
            ->with('visitor')
            ->when($request->status, fn ($q, $status) => $q->where('status', $status))
            ->when($request->q, function ($q, $search) {
                $q->where(function ($inner) use ($search) {
                    $inner->where('full_name', 'like', "%{$search}%")
                        ->orWhere('company', 'like', "%{$search}%");
                });
            })
            ->latest()
            ->paginate(25)
            ->withQueryString();

        $statsQuery = WatchlistEntry::owned($this->ownerRef($request))
            ->where('organization_id', $organization->id);

        $heroStats = [
            'total' => (clone $statsQuery)->count(),
            'requires_approval' => (clone $statsQuery)->where('status', Visitor::WATCHLIST_REQUIRES_APPROVAL)->count(),
            'blacklisted' => (clone $statsQuery)->where('status', Visitor::WATCHLIST_BLACKLISTED)->count(),
        ];

        return view('frontdesk.watchlist.index', [
            'entries' => $entries,
            'organization' => $organization,
            'statuses' => config('frontdesk.watchlist_statuses'),
            'heroStats' => $heroStats,
            'canManage' => app(\App\Services\Frontdesk\FrontdeskPermissions::class)
                ->can($this->member($request), 'watchlist.manage'),
        ]);
    }

    public function create(Request $request): View
    {
        $this->authorizeAbility($request, 'watchlist.manage');
        $organization = $this->organization($request);

        $visitors = Visitor::owned($this->ownerRef($request))
            ->where('organization_id', $organization->id)
            ->orderBy('full_name')
            ->limit(100)
            ->get();

        return view('frontdesk.watchlist.create', [
            'organization' => $organization,
            'visitors' => $visitors,
            'statuses' => config('frontdesk.watchlist_statuses'),
        ]);
    }

    public function store(Request $request, WatchlistService $watchlist): RedirectResponse
    {
        $this->authorizeAbility($request, 'watchlist.manage');
        $organization = $this->organization($request);

        $validated = $request->validate([
            'visitor_id' => ['nullable', 'integer'],
            'full_name' => ['required_without:visitor_id', 'string', 'max:255'],
            'company' => ['nullable', 'string', 'max:255'],
            'status' => ['required', 'string', 'in:'.implode(',', array_keys(config('frontdesk.watchlist_statuses')))],
            'reason' => ['nullable', 'string', 'max:2000'],
        ]);

        if ($validated['status'] === Visitor::WATCHLIST_ALLOWED) {
            return back()->withErrors(['status' => 'Choose requires approval or blacklisted for watchlist entries.']);
        }

        $visitor = null;
        if (! empty($validated['visitor_id'])) {
            $visitor = Visitor::owned($this->ownerRef($request))->findOrFail($validated['visitor_id']);
            $validated['full_name'] = $visitor->full_name;
            $validated['company'] = $visitor->company;
        }

        $entry = WatchlistEntry::create([
            'owner_ref' => $this->ownerRef($request),
            'organization_id' => $organization->id,
            'visitor_id' => $visitor?->id,
            'full_name' => $validated['full_name'],
            'company' => $validated['company'] ?? null,
            'status' => $validated['status'],
            'reason' => $validated['reason'] ?? null,
            'created_by' => $this->ownerRef($request),
        ]);

        if ($visitor) {
            $visitor->update(['watchlist_status' => $validated['status'], 'notes' => $validated['reason'] ?? $visitor->notes]);
        }

        AuditLog::record(
            $this->ownerRef($request),
            'watchlist.entry_created',
            $organization->id,
            $this->ownerRef($request),
            WatchlistEntry::class,
            $entry->id,
            ['full_name' => $entry->full_name, 'status' => $entry->status],
        );

        return redirect()
            ->route('frontdesk.watchlist.index')
            ->with('success', 'Watchlist entry added.');
    }

    public function destroy(Request $request, WatchlistEntry $entry, WatchlistService $watchlist): RedirectResponse
    {
        $this->authorizeAbility($request, 'watchlist.manage');
        $this->authorizeOwner($request, $entry);
        $organization = $this->organization($request);

        if ($entry->visitor_id) {
            $visitor = Visitor::owned($this->ownerRef($request))->find($entry->visitor_id);
            $visitor?->update(['watchlist_status' => Visitor::WATCHLIST_ALLOWED]);
        }

        AuditLog::record(
            $this->ownerRef($request),
            'watchlist.entry_removed',
            $organization->id,
            $this->ownerRef($request),
            WatchlistEntry::class,
            $entry->id,
            ['full_name' => $entry->full_name],
        );

        $entry->delete();

        return back()->with('success', 'Watchlist entry removed.');
    }
}