<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\ChiamataPostIt;
use App\Models\RubricaUniversale;
use App\Support\PhoneNumber;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Schema;

class PanasonicCstaController extends Controller
{
    public function incoming(Request $request): JsonResponse
    {
        if (! $this->isAuthorized($request)) {
            return response()->json(['ok' => false, 'message' => 'Unauthorized'], 401);
        }

        $payload = $request->validate([
            'phone'            => ['required', 'string', 'max:64'],
            'name'             => ['nullable', 'string', 'max:255'],
            'direction'        => ['nullable', 'in:in_arrivo,in_uscita,persa'],
            'outcome'          => ['nullable', 'string', 'max:255'],
            'event_id'         => ['nullable', 'string', 'max:100'],
            'called_extension' => ['nullable', 'string', 'max:30'],
            'note'             => ['nullable', 'string'],
            'called_at'        => ['nullable', 'date'],
        ]);

        $normalized = PhoneNumber::normalizeForMatch((string) $payload['phone']);
        $rubrica = $this->findRubricaByPhone($normalized);

        $postIt = null;
        if (Schema::hasTable('chiamate_post_it')) {
            $postIt = ChiamataPostIt::query()->create([
                'stabile_id'        => null,
                'rubrica_id'        => $rubrica?->id,
                'ticket_id'         => null,
                'creato_da_user_id' => null,
                'telefono'          => $normalized !== '' ? $normalized : (string) $payload['phone'],
                'nome_chiamante'    => $rubrica?->nome_completo ?: ($payload['name'] ?? null),
                'direzione'         => $payload['direction'] ?? 'in_arrivo',
                'esito'             => $payload['outcome'] ?? null,
                'origine'           => 'panasonic_ns1000',
                'origine_id'        => $payload['event_id'] ?? null,
                'oggetto'           => 'Chiamata ' . (($payload['direction'] ?? 'in_arrivo') === 'in_arrivo' ? 'in arrivo' : 'telefonica'),
                'nota'              => $this->buildNote($payload),
                'priorita'          => 'Media',
                'stato'             => 'post_it',
                'chiamata_il'       => $payload['called_at'] ?? now(),
            ]);
        }

        return response()->json([
            'ok'                => true,
            'source'            => 'panasonic_ns1000',
            'phone_normalized'  => $normalized,
            'matched'           => (bool) $rubrica,
            'rubrica'           => $rubrica ? [
                'id'            => $rubrica->id,
                'nome_completo' => $rubrica->nome_completo,
                'categoria'     => $rubrica->categoria,
            ] : null,
            'post_it_id'        => $postIt?->id,
            'called_extension'  => $payload['called_extension'] ?? null,
        ]);
    }

    public function lookup(Request $request): JsonResponse
    {
        if (! $this->isAuthorized($request)) {
            return response()->json(['ok' => false, 'message' => 'Unauthorized'], 401);
        }

        $data = $request->validate([
            'phone' => ['required', 'string', 'max:64'],
        ]);

        $normalized = PhoneNumber::normalizeForMatch((string) $data['phone']);
        $rubrica = $this->findRubricaByPhone($normalized);

        return response()->json([
            'ok'               => true,
            'phone_normalized' => $normalized,
            'matched'          => (bool) $rubrica,
            'rubrica'          => $rubrica ? [
                'id'             => $rubrica->id,
                'nome_completo'  => $rubrica->nome_completo,
                'telefono_ufficio' => $rubrica->telefono_ufficio,
                'telefono_cellulare' => $rubrica->telefono_cellulare,
                'telefono_casa'  => $rubrica->telefono_casa,
                'categoria'      => $rubrica->categoria,
            ] : null,
        ]);
    }

    private function isAuthorized(Request $request): bool
    {
        $configured = (string) env('NETGESCON_CTI_SHARED_TOKEN', '');
        if ($configured === '') {
            return false;
        }

        $token = (string) ($request->header('X-CTI-Token') ?: $request->input('token', ''));

        return hash_equals($configured, $token);
    }

    private function findRubricaByPhone(string $phone): ?RubricaUniversale
    {
        $digits = PhoneNumber::normalizeDigits($phone);
        if ($digits === '') {
            return null;
        }

        $tail = substr($digits, -7);
        if ($tail === false || $tail === '') {
            return null;
        }

        return RubricaUniversale::query()
            ->where(function ($q) use ($tail) {
                $q->orWhere('telefono_cellulare', 'like', '%' . $tail . '%')
                    ->orWhere('telefono_ufficio', 'like', '%' . $tail . '%')
                    ->orWhere('telefono_casa', 'like', '%' . $tail . '%')
                    ->orWhere('telefono_cellulare_nazionale', 'like', '%' . $tail . '%');
            })
            ->orderByDesc('updated_at')
            ->first();
    }

    private function buildNote(array $payload): string
    {
        $lines = [
            'Origine: Panasonic NS1000 (CSTA)',
        ];

        if (! empty($payload['called_extension'])) {
            $lines[] = 'Interno chiamato: ' . $payload['called_extension'];
        }

        if (! empty($payload['event_id'])) {
            $lines[] = 'Event ID: ' . $payload['event_id'];
        }

        if (! empty($payload['note'])) {
            $lines[] = 'Note PBX: ' . $payload['note'];
        }

        return implode("\n", $lines);
    }
}