<?php

namespace App\Services;

use App\Models\Production\WorkOrder;
use App\Models\Production\WorkResult;
use Illuminate\Support\Facades\DB;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class WorkResultService extends Service
{
    /**
     * 목록 조회 (검색/필터링/페이징)
     */
    public function index(array $params)
    {
        $tenantId = $this->tenantId();

        $page = (int) ($params['page'] ?? 1);
        $size = (int) ($params['size'] ?? 20);
        $q = trim((string) ($params['q'] ?? ''));
        $processType = $params['process_type'] ?? null;
        $workOrderId = $params['work_order_id'] ?? null;
        $workerId = $params['worker_id'] ?? null;
        $workDateFrom = $params['work_date_from'] ?? null;
        $workDateTo = $params['work_date_to'] ?? null;
        $isInspected = isset($params['is_inspected']) ? filter_var($params['is_inspected'], FILTER_VALIDATE_BOOLEAN) : null;
        $isPackaged = isset($params['is_packaged']) ? filter_var($params['is_packaged'], FILTER_VALIDATE_BOOLEAN) : null;

        $query = WorkResult::query()
            ->where('tenant_id', $tenantId)
            ->with([
                'workOrder:id,work_order_no',
                'worker:id,name',
            ]);

        // 검색어
        if ($q !== '') {
            $query->where(function ($qq) use ($q) {
                $qq->where('lot_no', 'like', "%{$q}%")
                    ->orWhere('product_name', 'like', "%{$q}%")
                    ->orWhereHas('workOrder', fn ($wo) => $wo->where('work_order_no', 'like', "%{$q}%"));
            });
        }

        // 공정유형 필터
        if ($processType !== null) {
            $query->where('process_type', $processType);
        }

        // 작업지시 필터
        if ($workOrderId !== null) {
            $query->where('work_order_id', $workOrderId);
        }

        // 작업자 필터
        if ($workerId !== null) {
            $query->where('worker_id', $workerId);
        }

        // 작업일 범위
        if ($workDateFrom !== null) {
            $query->where('work_date', '>=', $workDateFrom);
        }
        if ($workDateTo !== null) {
            $query->where('work_date', '<=', $workDateTo);
        }

        // 검사 완료 필터
        if ($isInspected !== null) {
            $query->where('is_inspected', $isInspected);
        }

        // 포장 완료 필터
        if ($isPackaged !== null) {
            $query->where('is_packaged', $isPackaged);
        }

        $query->orderByDesc('work_date')->orderByDesc('created_at');

        return $query->paginate($size, ['*'], 'page', $page);
    }

    /**
     * 통계 조회
     */
    public function stats(array $params = []): array
    {
        $tenantId = $this->tenantId();

        $workDateFrom = $params['work_date_from'] ?? null;
        $workDateTo = $params['work_date_to'] ?? null;
        $processType = $params['process_type'] ?? null;

        $query = WorkResult::where('tenant_id', $tenantId);

        // 작업일 범위
        if ($workDateFrom !== null) {
            $query->where('work_date', '>=', $workDateFrom);
        }
        if ($workDateTo !== null) {
            $query->where('work_date', '<=', $workDateTo);
        }

        // 공정유형 필터
        if ($processType !== null) {
            $query->where('process_type', $processType);
        }

        $totals = $query->select([
            DB::raw('SUM(production_qty) as total_production'),
            DB::raw('SUM(good_qty) as total_good'),
            DB::raw('SUM(defect_qty) as total_defect'),
        ])->first();

        $totalProduction = (int) ($totals->total_production ?? 0);
        $totalGood = (int) ($totals->total_good ?? 0);
        $totalDefect = (int) ($totals->total_defect ?? 0);

        $defectRate = $totalProduction > 0
            ? round(($totalDefect / $totalProduction) * 100, 1)
            : 0;

        return [
            'total_production' => $totalProduction,
            'total_good' => $totalGood,
            'total_defect' => $totalDefect,
            'defect_rate' => $defectRate,
        ];
    }

    /**
     * 단건 조회
     */
    public function show(int $id)
    {
        $tenantId = $this->tenantId();

        $workResult = WorkResult::where('tenant_id', $tenantId)
            ->with([
                'workOrder:id,work_order_no,project_name,status',
                'workOrderItem:id,item_name,specification,quantity',
                'worker:id,name',
            ])
            ->find($id);

        if (! $workResult) {
            throw new NotFoundHttpException(__('error.not_found'));
        }

        return $workResult;
    }

    /**
     * 생성
     */
    public function store(array $data)
    {
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        return DB::transaction(function () use ($data, $tenantId, $userId) {
            $data['tenant_id'] = $tenantId;
            $data['created_by'] = $userId;
            $data['updated_by'] = $userId;

            // 양품수량 자동 계산 (입력 안 된 경우)
            if (! isset($data['good_qty'])) {
                $data['good_qty'] = max(0, ($data['production_qty'] ?? 0) - ($data['defect_qty'] ?? 0));
            }

            // 작업지시 정보로 자동 채움
            if (! empty($data['work_order_id'])) {
                $workOrder = WorkOrder::find($data['work_order_id']);
                if ($workOrder) {
                    $data['process_type'] = $data['process_type'] ?? $workOrder->process_type;
                }
            }

            return WorkResult::create($data);
        });
    }

    /**
     * 수정
     */
    public function update(int $id, array $data)
    {
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        $workResult = WorkResult::where('tenant_id', $tenantId)->find($id);

        if (! $workResult) {
            throw new NotFoundHttpException(__('error.not_found'));
        }

        return DB::transaction(function () use ($workResult, $data, $userId) {
            $data['updated_by'] = $userId;

            // 양품수량 재계산 (생산수량 또는 불량수량 변경 시)
            if (isset($data['production_qty']) || isset($data['defect_qty'])) {
                $productionQty = $data['production_qty'] ?? $workResult->production_qty;
                $defectQty = $data['defect_qty'] ?? $workResult->defect_qty;

                if (! isset($data['good_qty'])) {
                    $data['good_qty'] = max(0, $productionQty - $defectQty);
                }
            }

            $workResult->update($data);

            return $workResult->fresh([
                'workOrder:id,work_order_no',
                'worker:id,name',
            ]);
        });
    }

    /**
     * 삭제
     */
    public function destroy(int $id): void
    {
        $tenantId = $this->tenantId();

        $workResult = WorkResult::where('tenant_id', $tenantId)->find($id);

        if (! $workResult) {
            throw new NotFoundHttpException(__('error.not_found'));
        }

        $workResult->delete();
    }

    /**
     * 검사 상태 토글
     */
    public function toggleInspection(int $id)
    {
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        $workResult = WorkResult::where('tenant_id', $tenantId)->find($id);

        if (! $workResult) {
            throw new NotFoundHttpException(__('error.not_found'));
        }

        $workResult->update([
            'is_inspected' => ! $workResult->is_inspected,
            'updated_by' => $userId,
        ]);

        return $workResult->fresh();
    }

    /**
     * 포장 상태 토글
     */
    public function togglePackaging(int $id)
    {
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        $workResult = WorkResult::where('tenant_id', $tenantId)->find($id);

        if (! $workResult) {
            throw new NotFoundHttpException(__('error.not_found'));
        }

        $workResult->update([
            'is_packaged' => ! $workResult->is_packaged,
            'updated_by' => $userId,
        ]);

        return $workResult->fresh();
    }
}