<?php

namespace App\Http\Controllers;

use App\Models\HR\Employee;
use App\Models\Rd\AiQuotation;
use App\Models\Tenants\Department;
use App\Models\Tenants\Tenant;
use App\Services\Rd\AiQuotationService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class RdController extends Controller
{
    public function __construct(
        private readonly AiQuotationService $quotationService
    ) {}

    /**
     * R&D 대시보드
     */
    public function index(Request $request): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.index'));
        }

        $dashboard = $this->quotationService->getDashboardStats();
        $statuses = AiQuotation::getStatuses();

        return view('rd.index', compact('dashboard', 'statuses'));
    }

    /**
     * 조직도 관리
     */
    public function orgChart(Request $request): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.org-chart'));
        }

        $tenantId = session('selected_tenant_id');

        // 부서 트리 (parent_id=null이 최상위)
        $departments = Department::where('tenant_id', $tenantId)
            ->where('is_active', true)
            ->orderBy('sort_order')
            ->orderBy('name')
            ->get();

        // 전체 직원 (활성 상태)
        $rawEmployees = Employee::withoutGlobalScopes()
            ->where('tenant_id', $tenantId)
            ->where('employee_status', 'active')
            ->with(['user', 'department'])
            ->orderBy('display_name')
            ->get();

        // Blade @json 호환을 위해 미리 배열로 변환
        $employees = $rawEmployees->map(function ($e) {
            return [
                'id' => $e->id,
                'user_id' => $e->user_id,
                'department_id' => $e->department_id,
                'display_name' => $e->display_name ?? $e->user?->name ?? '(이름없음)',
                'position_label' => $e->position_label,
            ];
        })->values();

        // 회사 정보 (조직도 최상단)
        $tenant = Tenant::find($tenantId);
        $companyName = $tenant->company_name ?? 'SAM';
        $ceoName = $tenant->ceo_name ?? '';

        return view('rd.org-chart', compact('departments', 'employees', 'companyName', 'ceoName'));
    }

    /**
     * 조직도 - 직원 부서 배치
     */
    public function orgChartAssign(Request $request): JsonResponse
    {
        $request->validate([
            'employee_id' => 'required|integer',
            'department_id' => 'required|integer',
        ]);

        $tenantId = session('selected_tenant_id');
        $employee = Employee::withoutGlobalScopes()
            ->where('tenant_id', $tenantId)
            ->where('id', $request->employee_id)
            ->first();

        if (! $employee) {
            return response()->json(['success' => false, 'message' => '직원을 찾을 수 없습니다.'], 404);
        }

        $employee->department_id = $request->department_id;
        $employee->save();

        return response()->json(['success' => true]);
    }

    /**
     * 조직도 - 직원 부서 해제 (미배치로 이동)
     */
    public function orgChartUnassign(Request $request): JsonResponse
    {
        $request->validate([
            'employee_id' => 'required|integer',
        ]);

        $tenantId = session('selected_tenant_id');
        $employee = Employee::withoutGlobalScopes()
            ->where('tenant_id', $tenantId)
            ->where('id', $request->employee_id)
            ->first();

        if (! $employee) {
            return response()->json(['success' => false, 'message' => '직원을 찾을 수 없습니다.'], 404);
        }

        $employee->department_id = null;
        $employee->save();

        return response()->json(['success' => true]);
    }

    /**
     * 조직도 - 부서 내 직원 순서/이동 일괄 처리
     */
    public function orgChartReorder(Request $request): JsonResponse
    {
        $request->validate([
            'moves' => 'required|array',
            'moves.*.employee_id' => 'required|integer',
            'moves.*.department_id' => 'nullable|integer',
        ]);

        $tenantId = session('selected_tenant_id');

        foreach ($request->moves as $move) {
            Employee::withoutGlobalScopes()
                ->where('tenant_id', $tenantId)
                ->where('id', $move['employee_id'])
                ->update(['department_id' => $move['department_id']]);
        }

        return response()->json(['success' => true]);
    }

    /**
     * 조직도 - 부서 순서 변경 (드래그 앤 드롭)
     */
    public function orgChartReorderDepts(Request $request): JsonResponse
    {
        $request->validate([
            'orders' => 'required|array',
            'orders.*.id' => 'required|integer',
            'orders.*.parent_id' => 'nullable|integer',
            'orders.*.sort_order' => 'required|integer',
        ]);

        $tenantId = session('selected_tenant_id');

        foreach ($request->orders as $order) {
            Department::where('tenant_id', $tenantId)
                ->where('id', $order['id'])
                ->update([
                    'parent_id' => $order['parent_id'],
                    'sort_order' => $order['sort_order'],
                ]);
        }

        return response()->json(['success' => true]);
    }

    /**
     * 조직도 - 부서 숨기기/표시 토글
     */
    public function orgChartToggleHide(Request $request): JsonResponse
    {
        $request->validate([
            'department_id' => 'required|integer',
            'hidden' => 'required|boolean',
        ]);

        $tenantId = session('selected_tenant_id');
        $dept = Department::where('tenant_id', $tenantId)
            ->where('id', $request->department_id)
            ->first();

        if (! $dept) {
            return response()->json(['success' => false, 'message' => '부서를 찾을 수 없습니다.'], 404);
        }

        $options = $dept->options ?? [];
        $options['orgchart_hidden'] = $request->hidden;
        $dept->options = $options;
        $dept->save();

        return response()->json(['success' => true]);
    }

    /**
     * 중대재해처벌법 실무 점검
     */
    public function safetyAudit(Request $request): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.safety-audit'));
        }

        return view('rd.safety-audit');
    }

    /**
     * AI 견적 목록
     */
    public function quotations(Request $request): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.ai-quotation.index'));
        }

        $statuses = AiQuotation::getStatuses();

        return view('rd.ai-quotation.index', compact('statuses'));
    }

    /**
     * AI 견적 생성 폼
     */
    public function createQuotation(Request $request): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.ai-quotation.create'));
        }

        return view('rd.ai-quotation.create');
    }

    /**
     * AI 견적 문서 (인쇄용 견적서)
     */
    public function documentQuotation(Request $request, int $id): View
    {
        $quotation = $this->quotationService->getById($id);

        if (! $quotation || ! $quotation->isCompleted()) {
            abort(404, '완료된 견적만 문서로 조회할 수 있습니다.');
        }

        $template = $request->query('template', 'classic');
        $allowed = ['classic', 'modern', 'blue', 'dark', 'colorful'];
        if (! in_array($template, $allowed)) {
            $template = 'classic';
        }

        return view('rd.ai-quotation.document', compact('quotation', 'template'));
    }

    /**
     * AI 견적 상세
     */
    public function showQuotation(Request $request, int $id): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.ai-quotation.show', $id));
        }

        $quotation = $this->quotationService->getById($id);

        if (! $quotation) {
            abort(404, 'AI 견적을 찾을 수 없습니다.');
        }

        return view('rd.ai-quotation.show', compact('quotation'));
    }

    /**
     * AI 견적 편집 (제조 모드)
     */
    public function editQuotation(Request $request, int $id): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.ai-quotation.edit', $id));
        }

        $quotation = $this->quotationService->getById($id);

        if (! $quotation) {
            abort(404, 'AI 견적을 찾을 수 없습니다.');
        }

        if (! $quotation->isCompleted()) {
            abort(403, '완료된 견적만 편집할 수 있습니다.');
        }

        return view('rd.ai-quotation.edit', compact('quotation'));
    }

    /**
     * 기획디자인 - 플래닝 캔버스
     */
    public function planningDesign(Request $request): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.planning-design'));
        }

        return view('rd.planning-design.index');
    }

    /**
     * 디자인 인사이트 - UI/UX 연구 도구
     */
    public function designInsight(Request $request): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.design-insight'));
        }

        return view('rd.design-insight.index');
    }

    /**
     * 사운드 로고 생성기
     */
    public function soundLogo(Request $request): View|\Illuminate\Http\Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('rd.sound-logo'));
        }

        return view('rd.sound-logo.index');
    }
}