<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\SortingHistory;
use Illuminate\Http\Request;

class IoTController extends Controller
{
    public function store(Request $request)
    {
        $validated = $request->validate([
            'raw_banana_weight' => 'required|numeric',
            'ripe_banana_weight' => 'required|numeric',
            'raw_orange_weight' => 'required|numeric',
            'ripe_orange_weight' => 'required|numeric',
        ]);

        $activeSession = \App\Models\SortingSession::active()->first();
        $sessionId = $activeSession ? (string) $activeSession->_id : null;

        // 1. Abaikan data jika semua berat adalah 0 (timbangan kosong)
        $hasWeight = (float) $validated['raw_banana_weight'] > 0 ||
                      (float) $validated['ripe_banana_weight'] > 0 ||
                      (float) $validated['raw_orange_weight'] > 0 ||
                      (float) $validated['ripe_orange_weight'] > 0;

        if (!$hasWeight) {
            return response()->json([
                'message' => 'Data skipped (all weights 0)',
                'data' => null
            ], 200);
        }

        // 2. Cegah duplikasi jika ada sesi aktif
        if ($sessionId) {
            $lastRecord = SortingHistory::where('session_id', $sessionId)
                ->latest('classification_date')
                ->first();

            if ($lastRecord) {
                $timeDiff = now()->diffInSeconds($lastRecord->classification_date);
                if ($timeDiff < 3) {
                    $isDuplicate = abs((float)$lastRecord->raw_banana_weight - (float)$validated['raw_banana_weight']) < 0.1 &&
                                   abs((float)$lastRecord->ripe_banana_weight - (float)$validated['ripe_banana_weight']) < 0.1 &&
                                   abs((float)$lastRecord->raw_orange_weight - (float)$validated['raw_orange_weight']) < 0.1 &&
                                   abs((float)$lastRecord->ripe_orange_weight - (float)$validated['ripe_orange_weight']) < 0.1;

                    if ($isDuplicate) {
                        return response()->json([
                            'message' => 'Data skipped (duplicate)',
                            'data' => null
                        ], 200);
                    }
                }
            }
            $validated['session_id'] = $sessionId;
        }

        $validated['classification_date'] = now();

        $history = SortingHistory::create($validated);

        return response()->json([
            'message' => 'Data saved successfully',
            'data' => $history
        ], 201);
    }
}