<?php

namespace App\Http\Controllers\Sales;

use App\Http\Controllers\Controller;
use App\Models\Tenants\Tenant;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\View\View;

/**
 * 영업 시나리오 관리 컨트롤러
 *
 * 영업 진행 및 매니저 상담 프로세스의 시나리오 모달과 체크리스트를 관리합니다.
 */
class SalesScenarioController extends Controller
{
    /**
     * 영업 시나리오 모달 뷰
     */
    public function salesScenario(int $tenantId, Request $request): View|Response
    {
        $tenant = Tenant::findOrFail($tenantId);
        $steps = config('sales_scenario.sales_steps');
        $currentStep = (int) $request->input('step', 1);
        $icons = config('sales_scenario.icons');

        // 체크리스트 진행 상태 조회
        $progress = $this->getChecklistProgress($tenantId, 'sales');

        // HTMX 요청이면 단계 콘텐츠만 반환
        if ($request->header('HX-Request') && $request->has('step')) {
            return view('sales.modals.scenario-step', [
                'tenant' => $tenant,
                'steps' => $steps,
                'currentStep' => $currentStep,
                'step' => collect($steps)->firstWhere('id', $currentStep),
                'progress' => $progress,
                'scenarioType' => 'sales',
                'icons' => $icons,
            ]);
        }

        return view('sales.modals.scenario-modal', [
            'tenant' => $tenant,
            'steps' => $steps,
            'currentStep' => $currentStep,
            'progress' => $progress,
            'scenarioType' => 'sales',
            'icons' => $icons,
        ]);
    }

    /**
     * 매니저 시나리오 모달 뷰
     */
    public function managerScenario(int $tenantId, Request $request): View|Response
    {
        $tenant = Tenant::findOrFail($tenantId);
        $steps = config('sales_scenario.manager_steps');
        $currentStep = (int) $request->input('step', 1);
        $icons = config('sales_scenario.icons');

        // 체크리스트 진행 상태 조회
        $progress = $this->getChecklistProgress($tenantId, 'manager');

        // HTMX 요청이면 단계 콘텐츠만 반환
        if ($request->header('HX-Request') && $request->has('step')) {
            return view('sales.modals.scenario-step', [
                'tenant' => $tenant,
                'steps' => $steps,
                'currentStep' => $currentStep,
                'step' => collect($steps)->firstWhere('id', $currentStep),
                'progress' => $progress,
                'scenarioType' => 'manager',
                'icons' => $icons,
            ]);
        }

        return view('sales.modals.scenario-modal', [
            'tenant' => $tenant,
            'steps' => $steps,
            'currentStep' => $currentStep,
            'progress' => $progress,
            'scenarioType' => 'manager',
            'icons' => $icons,
        ]);
    }

    /**
     * 체크리스트 항목 토글 (HTMX)
     */
    public function toggleChecklist(Request $request): Response
    {
        $request->validate([
            'tenant_id' => 'required|integer|exists:tenants,id',
            'scenario_type' => 'required|in:sales,manager',
            'step_id' => 'required|integer',
            'checkpoint_id' => 'required|string',
            'checked' => 'required|boolean',
        ]);

        $tenantId = $request->input('tenant_id');
        $scenarioType = $request->input('scenario_type');
        $stepId = $request->input('step_id');
        $checkpointId = $request->input('checkpoint_id');
        $checked = $request->boolean('checked');

        // 캐시 키 생성
        $cacheKey = "scenario_checklist:{$tenantId}:{$scenarioType}";

        // 현재 체크리스트 상태 조회
        $checklist = cache()->get($cacheKey, []);

        // 체크리스트 상태 업데이트
        $key = "{$stepId}_{$checkpointId}";
        if ($checked) {
            $checklist[$key] = [
                'checked_at' => now()->toDateTimeString(),
                'checked_by' => auth()->id(),
            ];
        } else {
            unset($checklist[$key]);
        }

        // 캐시에 저장 (30일 유지)
        cache()->put($cacheKey, $checklist, now()->addDays(30));

        // 진행률 계산
        $progress = $this->calculateProgress($tenantId, $scenarioType);

        return response()->json([
            'success' => true,
            'progress' => $progress,
            'checked' => $checked,
        ]);
    }

    /**
     * 진행률 조회
     */
    public function getProgress(int $tenantId, string $type): Response
    {
        $progress = $this->calculateProgress($tenantId, $type);

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

    /**
     * 체크리스트 진행 상태 조회
     */
    private function getChecklistProgress(int $tenantId, string $scenarioType): array
    {
        $cacheKey = "scenario_checklist:{$tenantId}:{$scenarioType}";

        return cache()->get($cacheKey, []);
    }

    /**
     * 진행률 계산
     */
    private function calculateProgress(int $tenantId, string $scenarioType): array
    {
        $steps = config("sales_scenario.{$scenarioType}_steps");
        $checklist = $this->getChecklistProgress($tenantId, $scenarioType);

        $totalCheckpoints = 0;
        $completedCheckpoints = 0;
        $stepProgress = [];

        foreach ($steps as $step) {
            $stepCompleted = 0;
            $stepTotal = count($step['checkpoints']);
            $totalCheckpoints += $stepTotal;

            foreach ($step['checkpoints'] as $checkpoint) {
                $key = "{$step['id']}_{$checkpoint['id']}";
                if (isset($checklist[$key])) {
                    $completedCheckpoints++;
                    $stepCompleted++;
                }
            }

            $stepProgress[$step['id']] = [
                'total' => $stepTotal,
                'completed' => $stepCompleted,
                'percentage' => $stepTotal > 0 ? round(($stepCompleted / $stepTotal) * 100) : 0,
            ];
        }

        return [
            'total' => $totalCheckpoints,
            'completed' => $completedCheckpoints,
            'percentage' => $totalCheckpoints > 0 ? round(($completedCheckpoints / $totalCheckpoints) * 100) : 0,
            'steps' => $stepProgress,
        ];
    }

    /**
     * 특정 단계의 체크포인트 체크 여부 확인
     */
    public function isCheckpointChecked(int $tenantId, string $scenarioType, int $stepId, string $checkpointId): bool
    {
        $checklist = $this->getChecklistProgress($tenantId, $scenarioType);
        $key = "{$stepId}_{$checkpointId}";

        return isset($checklist[$key]);
    }
}