<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Inertia\Inertia;
use App\Models\Structure;
use Illuminate\Support\Facades\DB;


class SuperAdminController extends Controller
{
    public function index(Request $request)
    {
        // On s'assure que seul un SuperAdmin peut accéder ici
        if (!auth()->user()->hasRole('SuperAdmin')) {
            abort(403, 'Accès refusé. Vous devez être SuperAdmin.');
        }

        return Inertia::render('SuperAdmin/Index', [
            'structures' => fn() => Structure::withCount(['users' => function ($query) {
                $query->withoutGlobalScope('structure');
            }])->get(),
            'current_structure_id' => session('target_structure_id'),
            'db_latency' => fn() => $this->calculateDbLatency(),
            'db_type' => DB::connection()->getDriverName()
        ]);
    }

    private function calculateDbLatency()
    {
        $start = microtime(true);
        DB::select('SELECT 1');
        return round((microtime(true) - $start) * 1000, 2);
    }

    public function create()
    {
        if (!auth()->user()->hasRole('SuperAdmin')) { abort(403); }

        return Inertia::render('SuperAdmin/Create');
    }

    public function store(Request $request)
    {
        if (!auth()->user()->hasRole('SuperAdmin')) { abort(403); }

        $validated = $request->validate([
            'name' => 'required|string|max:255',
            'slug' => 'required|string|max:255|unique:structures',
            'domain' => 'nullable|string|max:255|unique:structures',
            'is_active' => 'boolean'
        ]);

        Structure::create($validated);

        return redirect()->route('superadmin.index')->with('success', 'Structure créée avec succès.');
    }

    public function edit(Structure $structure)
    {
        if (!auth()->user()->hasRole('SuperAdmin')) { abort(403); }

        return Inertia::render('SuperAdmin/Edit', [
            'structure' => $structure
        ]);
    }

    public function update(Request $request, Structure $structure)
    {
        if (!auth()->user()->hasRole('SuperAdmin')) { abort(403); }

        $validated = $request->validate([
            'name' => 'required|string|max:255',
            'slug' => 'required|string|max:255|unique:structures,slug,' . $structure->id,
            'domain' => 'nullable|string|max:255|unique:structures,domain,' . $structure->id,
            'is_active' => 'boolean'
        ]);

        $structure->update($validated);

        return redirect()->route('superadmin.index')->with('success', 'Structure mise à jour.');
    }

    public function destroy(Structure $structure)
    {
        if (!auth()->user()->hasRole('SuperAdmin')) { abort(403); }

        if (Structure::count() <= 1) {
            return redirect()->back()->with('error', 'Impossible de supprimer la dernière structure.');
        }

        $structure->delete();

        return redirect()->route('superadmin.index')->with('success', 'Structure supprimée avec succès.');
    }

    public function switchStructure(Request $request, Structure $structure)
    {
        if (!auth()->user()->hasRole('SuperAdmin')) {
            abort(403);
        }

        // On enregistre dans la session qu'on veut "impersonner" cette structure
        $request->session()->put('target_structure_id', $structure->id);

        return redirect()->route('dashboard')->with('success', "Vous naviguez maintenant sur la structure : {$structure->name}.");
    }

    public function resetStructure(Request $request)
    {
        if (!auth()->user()->hasRole('SuperAdmin')) {
            abort(403);
        }

        // On retire l'impersonnation, on redevient un SuperAdmin "Global"
        $request->session()->forget('target_structure_id');

        return redirect()->route('superadmin.index')->with('success', "Périmètre global restauré.");
    }
}