<?php

namespace App\Http\Controllers\Api\V1;

use App\Http\Controllers\Controller;
use App\Models\Domain;
use App\Models\MailUser;
use App\Services\WebhookService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class MailboxController extends Controller
{
    public function index(Request $request): JsonResponse
    {
        $query = MailUser::with('domain')
            ->where('is_system', false);

        if ($request->filled('domain')) {
            $query->whereHas('domain', fn($q) => $q->where('domain', $request->domain));
        }
        if ($request->filled('active')) {
            $query->where('is_active', filter_var($request->active, FILTER_VALIDATE_BOOLEAN));
        }

        $mailboxes = $query->orderBy('email')->paginate(100);

        return response()->json([
            'data'  => $mailboxes->map(fn($m) => $this->format($m)),
            'meta'  => ['total' => $mailboxes->total(), 'per_page' => $mailboxes->perPage(), 'current_page' => $mailboxes->currentPage()],
        ]);
    }

    public function show(int $id): JsonResponse
    {
        $mailbox = MailUser::with('domain')->where('is_system', false)->findOrFail($id);
        return response()->json(['data' => $this->format($mailbox)]);
    }

    public function store(Request $request): JsonResponse
    {
        $request->tokenCan('mailboxes:write') || abort(403, 'Scope mailboxes:write required.');

        if ($request->isSandbox ?? false) {
            return response()->json(['data' => array_merge(['id' => 9999], $request->only('email')), 'sandbox' => true], 201);
        }

        $data = $request->validate([
            'email'       => 'required|email|unique:mail_users,email',
            'password'    => 'required|string|min:8',
            'display_name'=> 'nullable|string|max:120',
            'quota_mb'    => 'nullable|integer|min:0',
            'is_active'   => 'nullable|boolean',
        ]);

        [$local, $domainName] = explode('@', $data['email']);
        $domain = Domain::where('domain', $domainName)->firstOrFail();

        $mailbox = MailUser::create([
            'domain_id'    => $domain->id,
            'localpart'    => $local,
            'email'        => $data['email'],
            'display_name' => $data['display_name'] ?? null,
            'password_hash'=> '{ARGON2I}' . base64_encode(password_hash($data['password'], PASSWORD_ARGON2I)),
            'quota_mb'     => $data['quota_mb'] ?? $domain->default_quota_mb ?? 1024,
            'is_active'    => $data['is_active'] ?? true,
        ]);

        if (!($request->isSandbox ?? false)) {
            app(WebhookService::class)->dispatch('mailbox.created', $this->format($mailbox->load('domain')));
        }

        return response()->json(['data' => $this->format($mailbox->load('domain'))], 201);
    }

    public function update(Request $request, int $id): JsonResponse
    {
        $request->tokenCan('mailboxes:write') || abort(403, 'Scope mailboxes:write required.');

        $mailbox = MailUser::where('is_system', false)->findOrFail($id);

        if ($request->isSandbox ?? false) {
            return response()->json(['data' => $this->format($mailbox), 'sandbox' => true]);
        }

        $data = $request->validate([
            'display_name' => 'nullable|string|max:120',
            'quota_mb'     => 'nullable|integer|min:0',
            'is_active'    => 'nullable|boolean',
            'can_login'    => 'nullable|boolean',
        ]);

        $mailbox->update(array_filter($data, fn($v) => !is_null($v)));

        if (!($request->isSandbox ?? false)) {
            app(WebhookService::class)->dispatch('mailbox.updated', $this->format($mailbox->load('domain')));
        }

        return response()->json(['data' => $this->format($mailbox->load('domain'))]);
    }

    public function destroy(Request $request, int $id): JsonResponse
    {
        $request->tokenCan('mailboxes:write') || abort(403, 'Scope mailboxes:write required.');

        $mailbox = MailUser::where('is_system', false)->findOrFail($id);

        if ($request->isSandbox ?? false) {
            return response()->json(['sandbox' => true], 204);
        }

        $formatted = $this->format($mailbox->load('domain'));
        $mailbox->delete();
        app(WebhookService::class)->dispatch('mailbox.deleted', $formatted);
        return response()->json(null, 204);
    }

    private function format(MailUser $m): array
    {
        return [
            'id'           => $m->id,
            'email'        => $m->email,
            'display_name' => $m->display_name,
            'domain'       => $m->domain?->domain,
            'quota_mb'     => $m->quota_mb,
            'is_active'    => $m->is_active,
            'can_login'    => $m->can_login,
            'last_login_at'=> $m->last_login_at?->toIso8601String(),
            'created_at'   => $m->created_at->toIso8601String(),
        ];
    }
}