<?php

namespace App\Http\Controllers\Web;

use App\Http\Controllers\Controller;
use App\Models\Location;
use App\Services\Attendance\AttendancePolicyResolver;
use App\Support\FormTextRules;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Validation\Rule;

class LocationController extends Controller
{
    public function index()
    {
        $locations = Location::query()->withCount('users')->orderBy('name')->paginate(15);

        return view('locations.index', compact('locations'));
    }

    public function create()
    {
        $defaultRadius = app(AttendancePolicyResolver::class)
            ->tenantPolicy((int) Auth::user()?->company_id)['default_radius_meters'];

        return view('locations.create', compact('defaultRadius'));
    }

    public function store(Request $request)
    {
        $this->normalizeCoordinates($request);
        $companyId = Auth::user()?->company_id;
        $validated = $request->validate($this->rules($companyId), FormTextRules::messages());
        $validated['company_id'] = $companyId;
        $validated['is_active'] = $request->boolean('is_active', true);

        $location = Location::create($validated);

        if ($request->expectsJson()) {
            return response()->json(['id' => $location->id, 'name' => $location->name], 201);
        }

        return redirect()->route('locations.index')->with('success', 'Location created successfully.');
    }

    public function edit(Location $location)
    {
        $defaultRadius = app(AttendancePolicyResolver::class)
            ->tenantPolicy((int) Auth::user()?->company_id)['default_radius_meters'];

        return view('locations.edit', compact('location', 'defaultRadius'));
    }

    public function update(Request $request, Location $location)
    {
        $this->normalizeCoordinates($request);
        $companyId = Auth::user()?->company_id;
        $validated = $request->validate($this->rules($companyId, $location->id), FormTextRules::messages());
        $validated['is_active'] = $request->boolean('is_active');
        $location->update($validated);

        return redirect()->route('locations.index')->with('success', 'Location updated successfully.');
    }

    public function destroy(Location $location)
    {
        $assignedEmployees = $location->users()->count();
        if ($assignedEmployees > 0) {
            return redirect()
                ->route('locations.index')
                ->with('error', "Location cannot be deleted because it is assigned to {$assignedEmployees} employee(s).");
        }

        $location->delete();

        return redirect()->route('locations.index')->with('success', 'Location deleted successfully.');
    }

    /**
     * @return array<string, mixed>
     */
    private function rules(?int $companyId, ?int $ignoreLocationId = null): array
    {
        $uniqueCodeRule = Rule::unique('locations', 'code')->ignore($ignoreLocationId);
        if ($companyId === null) {
            $uniqueCodeRule = $uniqueCodeRule->where(fn ($query) => $query->whereNull('company_id'));
        } else {
            $uniqueCodeRule = $uniqueCodeRule->where(fn ($query) => $query->where('company_id', $companyId));
        }

        return [
            'name' => FormTextRules::notNumericOnly(true, 191),
            'code' => [
                'required',
                'string',
                'max:100',
                $uniqueCodeRule,
            ],
            'address' => FormTextRules::notNumericOnly(false, 2000),
            'latitude' => ['nullable', 'numeric', 'between:-90,90', 'required_with:longitude'],
            'longitude' => ['nullable', 'numeric', 'between:-180,180', 'required_with:latitude'],
            'radius_meters' => ['nullable', 'integer', 'min:10', 'max:10000'],
            'is_active' => ['nullable', 'boolean'],
        ];
    }

    private function normalizeCoordinates(Request $request): void
    {
        $request->merge([
            'latitude' => $request->filled('latitude') ? $request->input('latitude') : null,
            'longitude' => $request->filled('longitude') ? $request->input('longitude') : null,
            'radius_meters' => $request->filled('radius_meters') ? $request->input('radius_meters') : null,
        ]);
    }
}