<?php

namespace App\Filament\Pages;

use App\Models\OCRRecord;
use App\Models\OCRQuestionResult;
use App\Services\LearningAnalyticsService;
use App\Services\OCRService;
use BackedEnum;
use Filament\Notifications\Notification;
use Filament\Pages\Page;
use Livewire\Attributes\Url;
use UnitEnum;

class ExamAnalysis extends Page
{
    protected static ?string $title = '试卷分析详情';
    protected static string|BackedEnum|null $navigationIcon = 'heroicon-o-chart-bar';
    protected static ?string $navigationLabel = '试卷分析';
    protected static string|UnitEnum|null $navigationGroup = '管理';
    protected static ?int $navigationSort = 15;

    #[Url]
    public ?string $recordId = null;  // OCR记录ID

    #[Url]
    public ?string $paperId = null;   // 系统生成卷子ID

    public array $recordData = [];
    public array $analysisData = []; // 整体掌握度分析数据
    public array $paperAnalysisData = []; // 本次试卷的分析结果
    public array $studentInfo = [];
    public bool $loading = true;
    public string $recordType = ''; // 'ocr' 或 'generated'

    public function mount()
    {
        // 允许使用 recordId（OCR记录）或 paperId（系统生成卷子）
        if (!$this->recordId && !$this->paperId) {
            Notification::make()
                ->title('错误')
                ->body('缺少记录ID或试卷ID')
                ->danger()
                ->send();

            $this->redirectRoute('filament.admin.pages.upload-exam-paper');
            return;
        }

        // 根据记录类型选择不同的视图
        if ($this->recordId) {
            // OCR记录使用紧凑布局
            $this->view = 'filament.pages.exam-analysis-compact';
        } elseif ($this->paperId) {
            // 系统生成卷子使用标准布局
            $this->view = 'filament.pages.exam-analysis-standard';
        }

        $this->loadAnalysisData();
    }

    protected function loadAnalysisData()
    {
        try {
            // 处理OCR记录
            if ($this->recordId) {
                $this->recordType = 'ocr';
                $record = OCRRecord::with('student')->find($this->recordId);

                if (!$record) {
                    Notification::make()
                        ->title('错误')
                        ->body('未找到指定的上传记录')
                        ->danger()
                        ->send();

                    $this->redirectRoute('filament.admin.pages.upload-exam-paper');
                    return;
                }

                $this->recordData = $record->toArray();
                $this->studentInfo = $record->student ? $record->student->toArray() : [];

                // OCR记录：添加题目统计信息
                $ocrQuestionsCount = OCRQuestionResult::where('ocr_record_id', $this->recordId)->count();
                $this->recordData['total_questions'] = $ocrQuestionsCount;
                $this->recordData['questions'] = $this->getQuestions(); // 提前加载题目数据

                // OCR记录如果已完成处理，加载分析数据
                if ($record->status === 'completed' && $record->student_id) {
                    $this->loadLearningAnalysis($record->student_id, $this->recordId);
                } else {
                    $this->analysisData = [];
                }
            }
            // 处理系统生成卷子
            elseif ($this->paperId) {
                $this->recordType = 'generated';
                $paper = \App\Models\Paper::with('student')->find($this->paperId);

                if (!$paper) {
                    Notification::make()
                        ->title('错误')
                        ->body('未找到指定的试卷')
                        ->danger()
                        ->send();

                    $this->redirectRoute('filament.admin.pages.upload-exam-paper');
                    return;
                }

                // 构造基础数据，视图会安全处理缺失字段
                $this->recordData = [
                    'id' => $paper->paper_id,
                    'paper_id' => $paper->paper_id,
                    'student_id' => $paper->student_id,
                    'paper_type' => 'system_generated',
                    'paper_name' => $paper->paper_name,
                    'status' => $paper->status,
                    'total_questions' => $paper->question_count,
                    'created_at' => $paper->created_at,
                    'analysis_id' => $paper->analysis_id, // AI分析记录ID
                ];
                $this->studentInfo = $paper->student ? $paper->student->toArray() : [];

                // 获取试卷题目列表（包含题库API的详细数据）
                $this->recordData['questions'] = $this->getQuestions();

                // 系统生成卷子也尝试加载学习分析数据
                if ($paper->student_id) {
                    $this->loadLearningAnalysis($paper->student_id, $this->paperId);
                } else {
                    $this->analysisData = [];
                }
            }

            $this->loading = false;

        } catch (\Exception $e) {
            \Log::error('加载试卷分析数据失败', [
                'record_id' => $this->recordId,
                'paper_id' => $this->paperId,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString()
            ]);

            Notification::make()
                ->title('错误')
                ->body('加载分析数据失败：' . $e->getMessage())
                ->danger()
                ->send();

            $this->loading = false;
        }
    }

    /**
     * 加载学习分析数据
     */
    protected function loadLearningAnalysis($studentId, $identifier)
    {
        try {
            // 1. 尝试从数据库加载本次试卷的分析结果
            $paperId = null;
            if ($this->recordType === 'ocr') {
                $paperId = $this->recordData['exam_id'] ?? null;
            } elseif ($this->recordType === 'generated') {
                $paperId = $this->recordData['paper_id'] ?? null;
            }

            if ($paperId) {
                // 直接从API调用获取分析结果，不查询本地数据库
                \Log::info('跳过本地数据库查询，直接从API加载分析结果', [
                    'paper_id' => $paperId,
                    'student_id' => $studentId
                ]);
                $this->loadLearningAnalysisFromAPI($studentId, $paperId);
                return;
            }

            // 2. 直接从API获取整体掌握度数据，不查询本地数据库
            \Log::info('跳过知识点记录表查询，直接从API获取掌握度数据', [
                'student_id' => $studentId
            ]);
            $this->loadLearningAnalysisFromAPI($studentId, $paperId ?? null);
        } catch (\Exception $e) {
            \Log::warning('加载分析数据失败，回退到API调用', [
                'identifier' => $identifier,
                'student_id' => $studentId,
                'type' => $this->recordType,
                'error' => $e->getMessage()
            ]);

            // 数据库查询失败时回退到API调用
            $this->loadLearningAnalysisFromAPI($studentId, $paperId ?? null);
        }
    }

    /**
     * 从API加载学习分析数据（回退方案）
     */
    protected function loadLearningAnalysisFromAPI($studentId, $paperId = null)
    {
        try {
            $learningService = app(\App\Services\LearningAnalyticsService::class);

            // 1. 加载本次试卷的分析结果
            $analysisId = null;
            if ($this->recordType === 'ocr' && isset($this->recordData['analysis_id'])) {
                $analysisId = $this->recordData['analysis_id'];
            } elseif ($this->recordType === 'generated' && isset($this->recordData['analysis_id'])) {
                $analysisId = $this->recordData['analysis_id'];
            }

            if ($analysisId) {
                $paperAnalysisResponse = $learningService->getAnalysisResult($analysisId);
                if (!empty($paperAnalysisResponse) && isset($paperAnalysisResponse['data'])) {
                    $this->paperAnalysisData = $paperAnalysisResponse['data'];

                    // 将API的分析结果同步到题目数据
                    if (isset($this->paperAnalysisData['question_results'])) {
                        $this->syncApiAnalysisToQuestions($this->paperAnalysisData['question_results']);
                    }

                    \Log::info('本次试卷分析结果已从API加载', [
                        'analysis_id' => $analysisId,
                        'student_id' => $studentId,
                        'data_keys' => array_keys($this->paperAnalysisData),
                        'question_results_count' => count($this->paperAnalysisData['question_results'] ?? [])
                    ]);
                }
            }

            // 2. 调用学习分析API获取整体掌握度数据
            $masteryResponse = $learningService->getStudentMastery($studentId);

            // 转换为页面期望的格式
            if (!empty($masteryResponse) && isset($masteryResponse['data'])) {
                $masteryList = $masteryResponse['data'];

                // 计算整体掌握度
                $totalMastery = 0;
                $count = count($masteryList);
                $weakAreas = [];
                $knowledgePoints = [];

                foreach ($masteryList as $mastery) {
                    $masteryLevel = $mastery['mastery_level'] ?? 0;
                    $totalMastery += $masteryLevel;

                    // 识别薄弱知识点(掌握度 < 0.6)
                    if ($masteryLevel < 0.6) {
                        $weakAreas[] = [
                            'kp_code' => $mastery['kp_code'],
                            'mastery' => $masteryLevel
                        ];
                    }

                    // 构造知识点数据
                    $totalAttempts = $mastery['total_attempts'] ?? 0;
                    $correctAttempts = $mastery['correct_attempts'] ?? 0;
                    $accuracyRate = $totalAttempts > 0 ? $correctAttempts / $totalAttempts : 0;

                    $knowledgePoints[] = [
                        'kp_code' => $mastery['kp_code'],
                        'name' => $mastery['kp_code'], // TODO: 从知识图谱服务获取名称
                        'mastery' => $masteryLevel,
                        'mastery_level' => $masteryLevel, // 添加模板需要的字段
                        'total_attempts' => $totalAttempts,
                        'correct_attempts' => $correctAttempts,
                        'accuracy_rate' => $accuracyRate
                    ];
                }

                $overallMastery = $count > 0 ? $totalMastery / $count : 0;

                // 生成学习建议
                $recommendations = $this->generateRecommendations($overallMastery, $weakAreas, $knowledgePoints);

                // 只显示与当前试卷相关的知识点
                $currentPaperKps = $this->getCurrentPaperKnowledgePoints();
                $currentPaperKpCodes = array_column($currentPaperKps, 'kp_code');
                $filteredKnowledgePoints = array_filter($knowledgePoints, function($kp) use ($currentPaperKpCodes) {
                    return in_array($kp['kp_code'], $currentPaperKpCodes);
                });

                $this->analysisData = [
                    'overall_mastery' => $overallMastery,
                    'weak_areas' => array_filter($weakAreas, function($weak) use ($currentPaperKpCodes) {
                        return in_array($weak['kp_code'], $currentPaperKpCodes);
                    }),
                    'knowledge_points' => $filteredKnowledgePoints, // 只显示当前试卷相关知识点
                    'recommendations' => $recommendations,
                    'total_knowledge_points' => count($filteredKnowledgePoints),
                    'mastery_distribution' => $this->calculateMasteryDistribution($masteryList)
                ];

                \Log::info('学习分析数据已从API加载', [
                    'student_id' => $studentId,
                    'overall_mastery' => $overallMastery,
                    'knowledge_points_count' => count($knowledgePoints),
                    'filtered_knowledge_points_count' => count($filteredKnowledgePoints),
                    'current_paper_kp_codes' => $currentPaperKpCodes,
                    'weak_areas_count' => count($weakAreas)
                ]);
            } else {
                \Log::info('API返回数据为空', [
                    'student_id' => $studentId,
                    'paper_id' => $paperId,
                    'type' => $this->recordType
                ]);
                $this->analysisData = [];
            }
        } catch (\Exception $apiError) {
            \Log::warning('API调用失败', [
                'student_id' => $studentId,
                'paper_id' => $paperId,
                'type' => $this->recordType,
                'error' => $apiError->getMessage()
            ]);

            // API调用失败时设置空数组，避免页面报错
            $this->analysisData = [];
            $this->paperAnalysisData = [];
        }
    }

    /**
     * 处理知识点记录数据
     */
    protected function processKnowledgePointRecords($knowledgePointRecords)
    {
        // 根据实际的knowledge_point_records表结构处理数据
        $masteryList = [];
        $weakAreas = [];
        $knowledgePoints = [];
        $totalMastery = 0;
        $count = 0;

        foreach ($knowledgePointRecords as $record) {
            // knowledge_point_records表有不同的字段结构
            $kpCode = $record->knowledge_point ?? '';
            $masteryLevel = $record->mastery_after ?? $record->mastery_before ?? 0;

            if (!empty($kpCode)) {
                $masteryList[] = [
                    'kp_code' => $kpCode,
                    'mastery_level' => $masteryLevel
                ];

                $totalMastery += $masteryLevel;
                $count++;

                // 识别薄弱知识点(掌握度 < 0.6)
                if ($masteryLevel < 0.6) {
                    $weakAreas[] = [
                        'kp_code' => $kpCode,
                        'mastery' => $masteryLevel
                    ];
                }

                // 构造知识点数据
                $knowledgePoints[] = [
                    'kp_code' => $kpCode,
                    'name' => $kpCode,
                    'mastery' => $masteryLevel,
                    'mastery_level' => $masteryLevel, // 添加模板需要的字段
                    'total_attempts' => 1, // 默认值
                    'correct_attempts' => $masteryLevel > 0.5 ? 1 : 0, // 估算值
                    'accuracy_rate' => $masteryLevel
                ];
            }
        }

        $overallMastery = $count > 0 ? $totalMastery / $count : 0;

        // 生成学习建议
        $recommendations = $this->generateRecommendations($overallMastery, $weakAreas, $knowledgePoints);

        // 只显示与当前试卷相关的知识点
        $currentPaperKps = $this->getCurrentPaperKnowledgePoints();
        $currentPaperKpCodes = array_column($currentPaperKps, 'kp_code');
        $filteredKnowledgePoints = array_filter($knowledgePoints, function($kp) use ($currentPaperKpCodes) {
            return in_array($kp['kp_code'], $currentPaperKpCodes);
        });

        $this->analysisData = [
            'overall_mastery' => $overallMastery,
            'weak_areas' => array_filter($weakAreas, function($weak) use ($currentPaperKpCodes) {
                return in_array($weak['kp_code'], $currentPaperKpCodes);
            }),
            'knowledge_points' => $filteredKnowledgePoints, // 只显示当前试卷相关知识点
            'recommendations' => $recommendations,
            'total_knowledge_points' => count($filteredKnowledgePoints),
            'mastery_distribution' => $this->calculateMasteryDistribution($masteryList)
        ];

        \Log::info('学习分析数据已从knowledge_point_records加载', [
            'student_id' => $knowledgePointRecords->first()->student_id ?? 'unknown',
            'overall_mastery' => $overallMastery,
            'knowledge_points_count' => count($knowledgePoints),
            'filtered_knowledge_points_count' => count($filteredKnowledgePoints),
            'current_paper_kp_codes' => $currentPaperKpCodes,
            'weak_areas_count' => count($weakAreas)
        ]);
    }

    /**
     * 生成学习建议
     */
    protected function generateRecommendations($overallMastery, $weakAreas, $knowledgePoints)
    {
        $recommendations = [];

        if ($overallMastery >= 0.8) {
            $recommendations[] = '整体掌握情况良好,继续保持!可以尝试更有挑战性的题目。';
        } elseif ($overallMastery >= 0.6) {
            $recommendations[] = '基础掌握较好,建议加强薄弱知识点的练习。';
        } else {
            $recommendations[] = '需要系统复习基础知识,建议从简单题目开始逐步提升。';
        }

        // 针对薄弱知识点的建议
        if (count($weakAreas) > 0) {
            $weakKpCodes = array_slice(array_column($weakAreas, 'kp_code'), 0, 3);
            $recommendations[] = '重点加强以下知识点: ' . implode('、', $weakKpCodes);
        }

        // 根据答题次数给建议
        $lowAttempts = array_filter($knowledgePoints, function($kp) {
            return ($kp['total_attempts'] ?? 0) < 5;
        });

        if (count($lowAttempts) > 0) {
            $recommendations[] = '部分知识点练习次数较少,建议增加练习量以巩固掌握。';
        }

        return $recommendations;
    }

    /**
     * 计算掌握度分布
     */
    protected function calculateMasteryDistribution($masteryList)
    {
        $distribution = [
            'high' => 0,    // >= 0.7
            'medium' => 0,  // 0.4 - 0.7
            'low' => 0      // < 0.4
        ];

        foreach ($masteryList as $mastery) {
            $level = $mastery['mastery_level'] ?? 0;
            if ($level >= 0.7) {
                $distribution['high']++;
            } elseif ($level >= 0.4) {
                $distribution['medium']++;
            } else {
                $distribution['low']++;
            }
        }

        return $distribution;
    }

    public function getPaperTypeLabel(): string
    {
        if ($this->recordType === 'ocr' && isset($this->recordData['paper_type'])) {
            return match($this->recordData['paper_type']) {
                'unit_test' => '单元测试',
                'midterm' => '期中考试',
                'final' => '期末考试',
                'homework' => '家庭作业',
                'quiz' => '随堂测验',
                'other' => '其他',
                default => '未分类',
            };
        }
        return $this->recordData['paper_type'] ?? '未知';
    }

    public function getStatusBadge(): string
    {
        $status = $this->recordData['status'] ?? 'unknown';
        return match($status) {
            'pending' => '<span class="badge badge-ghost">待处理</span>',
            'processing' => '<span class="badge badge-info gap-2"><span class="loading loading-spinner loading-xs"></span>处理中</span>',
            'completed' => '<span class="badge badge-success">已完成</span>',
            'failed' => '<span class="badge badge-error">失败</span>',
            default => '<span class="badge badge-ghost">未知</span>',
        };
    }

    /**
     * 判断是否为 OCR 场景
     */
    public function isOcrRecord(): bool
    {
        return $this->recordType === 'ocr';
    }

    /**
     * 获取OCR记录的题目数据
     * 从OCRQuestionResult表加载并格式化为组件期望的格式
     */
    protected function getOcrQuestions(): array
    {
        $recordId = $this->recordId ?? null;
        if (!$recordId) {
            \Log::warning('OCR记录缺少recordId', ['recordId' => $recordId]);
            return [];
        }

        try {
            // 从OCRQuestionResult表加载题目数据
            $ocrQuestions = OCRQuestionResult::where('ocr_record_id', $recordId)
                ->orderBy('question_number')
                ->get();

            \Log::info('加载OCR题目数据', [
                'record_id' => $recordId,
                'questions_count' => $ocrQuestions->count()
            ]);

            if ($ocrQuestions->isEmpty()) {
                \Log::warning('OCR记录没有题目数据', ['record_id' => $recordId]);
                return [];
            }

            // 创建API分析结果的映射（如果有）
            $analysisMap = [];
            if (!empty($this->paperAnalysisData['question_results'])) {
                foreach ($this->paperAnalysisData['question_results'] as $result) {
                    if (isset($result['question_id'])) {
                        $analysisMap[$result['question_id']] = $result;
                    }
                }
            }

            $questions = [];

            foreach ($ocrQuestions as $oq) {
                // 获取API分析结果（如果有）
                $aiAnalysis = null;
                if (isset($analysisMap[$oq->question_number])) {
                    $analysis = $analysisMap[$oq->question_number];
                    $aiAnalysis = [
                        'analysis' => $analysis['reason'] ?? '',
                        'mistake_type' => $analysis['mistake_type'] ?? '',
                        'mistake_category' => $analysis['mistake_category'] ?? '',
                        'suggestions' => [$analysis['suggestions'] ?? ''],
                        'correct_solution' => $analysis['correct_solution'] ?? '',
                    ];
                } elseif (!empty($oq->ai_feedback)) {
                    // 如果没有API分析，使用OCR记录的AI反馈
                    $aiAnalysis = [
                        'analysis' => $oq->ai_feedback,
                        'mistake_type' => '',
                        'mistake_category' => '',
                        'suggestions' => [$oq->ai_feedback],
                        'correct_solution' => '',
                    ];
                }

                // 学生答案：优先使用老师校准的答案（manual_answer），如果没有则使用OCR识别的答案
                $ocrAnswer = trim($oq->student_answer ?? '');
                $manualAnswer = trim($oq->manual_answer ?? '');
                $studentAnswer = !empty($manualAnswer) ? $manualAnswer : $ocrAnswer;

                // 判断是否有答案（OCR识别或老师校准）
                $hasAnswer = !empty($studentAnswer);
                $displayAnswer = $hasAnswer ? ($studentAnswer ?: '空') : '未作答';

                // 从AI分析结果中获取正确答案和判断
                $correctAnswer = null;
                $isCorrect = false;
                $solution = null;
                if (isset($analysisMap[$oq->question_number])) {
                    $analysis = $analysisMap[$oq->question_number];
                    $correctAnswer = $analysis['correct_answer'] ?? $analysis['correct_solution'] ?? null;
                    $isCorrect = $analysis['is_correct'] ?? false;
                    $solution = $analysis['correct_solution'] ?? null;
                }

                // 显示答案对比（如果有AI分析的正确答案）
                $answerComparison = null;
                if (!empty($correctAnswer) && $studentAnswer !== $correctAnswer && $hasAnswer) {
                    $answerComparison = [
                        'student' => $studentAnswer,
                        'correct' => $correctAnswer
                    ];
                }

                $questions[] = [
                    'id' => $oq->id,
                    'question_number' => $oq->question_number,
                    'question_bank_id' => 'ocr_' . $oq->question_number, // OCR题目没有题库ID，用前缀标识
                    'question_type' => 'unknown',
                    'question_text' => $oq->question_text ?? '题目内容缺失',
                    'content' => $oq->question_text ?? '题目内容缺失',
                    'stem' => $oq->question_text ?? '题目内容缺失',
                    'answer' => $correctAnswer ?? '', // 正确答案（从AI分析获取）
                    'reference_answer' => $correctAnswer ?? '',
                    'solution' => $solution, // 解题步骤
                    'score_total' => $oq->score_total ?? null, // OCR题目的分数可能为空
                    'score_obtained' => $oq->score_obtained ?? null, // OCR题目的分数可能为空
                    'student_answer' => $displayAnswer, // 学生答案：未作答/空/实际答案（校准后）
                    'is_correct' => $isCorrect,
                    'kp_code' => $oq->kp_code ?? null, // OCR题目的知识点可能为空
                    'ai_analysis' => $aiAnalysis,
                    'answer_comparison' => $answerComparison, // 答案对比信息
                ];
            }

            \Log::info('OCR题目数据格式化完成', [
                'record_id' => $recordId,
                'formatted_questions_count' => count($questions),
                'has_ai_analysis_count' => count(array_filter($questions, fn($q) => !empty($q['ai_analysis'])))
            ]);

            return $questions;

        } catch (\Exception $e) {
            \Log::error('获取OCR题目数据失败', [
                'record_id' => $recordId,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString()
            ]);

            return [];
        }
    }

    /**
     * 获取题目列表(根据场景返回不同数据，包含AI分析解析)
     */
    public function getQuestions(): array
    {
        // OCR记录：从OCRQuestionResult表加载题目数据
        if ($this->recordType === 'ocr') {
            $questions = $this->getOcrQuestions();
            // 丰富知识点信息
            return $this->enrichQuestionsWithKnowledgePoints($questions);
        }

        // 系统生成卷子：从PaperQuestion表加载题目数据
        $paperId = $this->recordData['paper_id'] ?? null;
        if (!$paperId) {
            return [];
        }

        try {
            // 直接查询题目数据
            $paperQuestions = \App\Models\PaperQuestion::where('paper_id', $paperId)
                ->orderBy('question_number')
                ->get();

            if ($paperQuestions->isEmpty()) {
                return [];
            }

            // 获取题库题目详情
            $questionBankService = app(\App\Services\QuestionBankService::class);
            $questionBankIds = $paperQuestions->pluck('question_bank_id')->unique()->filter()->toArray();
            $questionDetails = collect([]);

            \Log::info('准备调用题库服务', [
                'question_bank_ids' => $questionBankIds,
                'ids_count' => count($questionBankIds)
            ]);

            if (!empty($questionBankIds)) {
                try {
                    \Log::info('开始调用题库服务getQuestionsByIds');
                    $details = $questionBankService->getQuestionsByIds($questionBankIds);
                    \Log::info('题库服务调用结果', [
                        'response' => $details,
                        'has_data' => isset($details['data']),
                        'data_type' => gettype($details['data'] ?? null)
                    ]);

                    if (isset($details['data']) && is_array($details['data'])) {
                        $questionDetails = collect($details['data'])->keyBy('id');
                        \Log::info('题库数据处理成功', [
                            'details_count' => $questionDetails->count(),
                            'first_key' => $questionDetails->keys()->first()
                        ]);
                    } else {
                        \Log::warning('题库服务返回数据格式不正确', ['details' => $details]);
                    }
                } catch (\Exception $e) {
                    \Log::error('获取题库数据失败', [
                        'error' => $e->getMessage(),
                        'trace' => $e->getTraceAsString()
                    ]);
                }
            } else {
                \Log::info('没有有效的题库ID');
            }

            // 构建题目数据 - 合并paper_questions表和题库API数据
            $questions = [];

            // 创建API分析结果的映射（如果有）
            $analysisMap = [];
            if (!empty($this->paperAnalysisData['question_results'])) {
                foreach ($this->paperAnalysisData['question_results'] as $result) {
                    if (isset($result['question_id'])) {
                        $analysisMap[$result['question_id']] = $result;
                    }
                }
            }

            foreach ($paperQuestions as $pq) {
                // 从题库API获取详细数据
                $detail = $questionDetails->get($pq->question_bank_id);

                \Log::info('构建题目数据', [
                    'question_bank_id' => $pq->question_bank_id,
                    'has_detail' => $detail ? 'Yes' : 'No',
                    'detail_id' => $detail['id'] ?? 'null',
                    'stem_preview' => $detail ? substr($detail['stem'] ?? '', 50) : 'null',
                    'kp_code_from_db' => $pq->knowledge_point,
                    'kp_code_from_api' => $detail['kp_code'] ?? 'null',
                    'has_analysis' => isset($analysisMap[$pq->question_bank_id]) ? 'Yes' : 'No'
                ]);

                // 优先使用题库API返回的stem，如果没有则使用paper_questions中的question_text
                $questionText = $detail['stem'] ?? $detail['content'] ?? $pq->question_text ?? '题目内容缺失';
                // 优先使用题库API返回的kp_code，如果没有则使用paper_questions中的knowledge_point
                $kpCode = $detail['kp_code'] ?? $pq->knowledge_point ?? 'N/A';

                // 获取API分析结果（如果有）
                $aiAnalysis = null;
                if (isset($analysisMap[$pq->question_bank_id])) {
                    $analysis = $analysisMap[$pq->question_bank_id];
                    $aiAnalysis = [
                        'analysis' => $analysis['reason'] ?? '',
                        'mistake_type' => $analysis['mistake_type'] ?? '',
                        'mistake_category' => $analysis['mistake_category'] ?? '',
                        'suggestions' => [$analysis['suggestions'] ?? ''],
                        'correct_solution' => $analysis['correct_solution'] ?? '',
                    ];
                }

                // 获取解题步骤solution（从Question Bank或AI分析）
                $solution = $detail['solution'] ?? $detail['correct_solution'] ?? null;
                if (!$solution && isset($analysisMap[$pq->question_bank_id])) {
                    $analysis = $analysisMap[$pq->question_bank_id];
                    $solution = $analysis['correct_solution'] ?? null;
                }

                $questions[] = [
                    'id' => $pq->id,
                    'question_number' => $pq->question_number,
                    'question_bank_id' => $pq->question_bank_id,
                    'question_type' => $pq->question_type,
                    'question_text' => $questionText,
                    'content' => $questionText,
                    'stem' => $questionText,
                    'answer' => $detail['answer'] ?? '',
                    'reference_answer' => $detail['answer'] ?? '',
                    'solution' => $solution, // 解题步骤
                    'score_total' => $pq->score ?? 5,
                    'score_obtained' => $pq->score_obtained ?? 0,
                    'student_answer' => '老师已评分', // 隐藏学生答案，显示老师评分状态
                    'is_correct' => $pq->is_correct ?? false,
                    'kp_code' => $kpCode,
                    'ai_analysis' => $aiAnalysis,
                ];
            }

            // 丰富知识点信息
            return $this->enrichQuestionsWithKnowledgePoints($questions);

        } catch (\Exception $e) {
            \Log::error('获取题目列表失败', [
                'paper_id' => $paperId,
                'error' => $e->getMessage()
            ]);
            return [];
        }
    }

    /**
     * 丰富题目数据，添加知识点详细信息
     */
    protected function enrichQuestionsWithKnowledgePoints(array $questions): array
    {
        // 收集所有知识点代码
        $kpCodes = [];
        foreach ($questions as $question) {
            if (!empty($question['kp_code']) && $question['kp_code'] !== 'N/A') {
                $kpCodes[] = $question['kp_code'];
            }
        }

        if (empty($kpCodes)) {
            return $questions;
        }

        // 获取知识点详细信息
        $knowledgeService = app(\App\Services\KnowledgeGraphService::class);
        $knowledgePointsList = $knowledgeService->listKnowledgePoints(1, 1000);
        $knowledgePoints = [];

        if (isset($knowledgePointsList['data']) && !empty($knowledgePointsList['data'])) {
            foreach ($knowledgePointsList['data'] as $kp) {
                $knowledgePoints[$kp['kp_code']] = $kp;
            }
        }

        // 获取技能点信息
        $skillsList = [];
        foreach ($kpCodes as $kpCode) {
            $skills = $knowledgeService->getSkillsByKnowledgePoint($kpCode);
            if (!empty($skills)) {
                $skillsList[$kpCode] = $skills;
            }
        }

        // 丰富题目数据
        foreach ($questions as &$question) {
            $kpCode = $question['kp_code'] ?? null;
            if ($kpCode && isset($knowledgePoints[$kpCode])) {
                $kp = $knowledgePoints[$kpCode];
                $question['knowledge_point'] = [
                    'code' => $kpCode,
                    'name' => $kp['cn_name'] ?? $kpCode,
                    'category' => $kp['category'] ?? '',
                    'phase' => $kp['phase'] ?? '',
                    'grade' => $kp['grade'] ?? '',
                    'description' => $kp['description'] ?? '',
                ];

                // 添加技能点
                if (isset($skillsList[$kpCode])) {
                    $question['knowledge_point']['skills'] = $skillsList[$kpCode];
                }
            }
        }

        return $questions;
    }

    /**
     * 重新处理OCR
     */
    public function reprocessOCR()
    {
        if (!$this->recordId) {
            return;
        }

        try {
            $record = OCRRecord::find($this->recordId);
            if (!$record) {
                throw new \Exception('记录不存在');
            }

            $ocrService = app(OCRService::class);
            $ocrService->reprocess($record);

            Notification::make()
                ->title('已提交重新处理')
                ->body('OCR识别任务已重新加入队列')
                ->success()
                ->send();

            $this->loadAnalysisData(); // 刷新数据

        } catch (\Exception $e) {
            Notification::make()
                ->title('操作失败')
                ->body($e->getMessage())
                ->danger()
                ->send();
        }
    }

    /**
     * 重新提交分析
     */
    public function reanalyze()
    {
        if (!$this->recordId) {
            return;
        }

        try {
            $record = OCRRecord::find($this->recordId);
            if (!$record) {
                throw new \Exception('记录不存在');
            }

            // 获取当前的题目数据（包含可能的人工校准）
            $questions = OCRQuestionResult::where('ocr_record_id', $this->recordId)
                ->orderBy('question_number')
                ->get()
                ->map(function ($q) {
                    return [
                        'question_number' => $q->question_number,
                        'content' => $q->question_text,
                        'student_answer' => $q->student_answer,
                        'manual_answer' => $q->manual_answer,
                        'answer_verified' => $q->answer_verified,
                        'confidence' => $q->score_confidence,
                        'kp_code' => $q->kp_code,
                        'score_value' => $q->score_value,
                    ];
                })->toArray();

            if (empty($questions)) {
                throw new \Exception('没有可分析的题目数据');
            }

            // 构造分析请求数据
            $analysisData = [
                'exam_id' => $record->exam_id,
                'student_id' => $record->student_id,
                'ocr_record_id' => $record->id,
                'teacher_name' => auth()->user()->name ?? 'Teacher',
                'analysis_type' => 'mastery',
                'questions' => array_map(function($q) {
                    // 优先使用人工校准的答案
                    $studentAnswer = $q['student_answer'] ?? '';
                    if (isset($q['manual_answer']) && !empty($q['manual_answer'])) {
                        $studentAnswer = $q['manual_answer'];
                    }

                    return [
                        'question_id' => $q['question_number'],
                        'question_number' => (string)$q['question_number'],
                        'kp_code' => $q['kp_code'] ?? null,
                        'score_value' => $q['score_value'] ?? 0,
                        'student_answer' => $studentAnswer,
                        'ocr_confidence' => $q['confidence'] ?? 0,
                        'question_text' => $q['content'] ?? '',
                        'teacher_validated' => $q['answer_verified'] ?? false,
                    ];
                }, $questions)
            ];

            // 调用分析服务
            $learningService = app(LearningAnalyticsService::class);
            $result = $learningService->submitOCRAnalysis($analysisData);

            if (isset($result['success']) && $result['success']) {
                $record->update([
                    'ai_analyzed_at' => now(),
                    'ai_analysis_count' => ($record->ai_analysis_count ?? 0) + 1
                ]);

                Notification::make()
                    ->title('分析请求已提交')
                    ->body('系统正在重新分析试卷，请稍后刷新查看结果')
                    ->success()
                    ->send();

                $this->loadAnalysisData(); // 刷新数据
            } else {
                throw new \Exception($result['message'] ?? '提交分析失败');
            }

        } catch (\Exception $e) {
            Notification::make()
                ->title('操作失败')
                ->body($e->getMessage())
                ->danger()
                ->send();
        }
    }

    /**
     * 从当前试卷数据中提取知识点信息
     */
    protected function extractKnowledgePointsFromCurrentPaper(): array
    {
        $knowledgePoints = [];

        $questions = $this->getQuestions();

        foreach ($questions as $question) {
            $kpCode = $question['kp_code'] ?? null;
            if ($kpCode && $kpCode !== 'N/A') {
                $isCorrect = $question['is_correct'] ?? false;

                if (!isset($knowledgePoints[$kpCode])) {
                    $knowledgePoints[$kpCode] = [
                        'kp_code' => $kpCode,
                        'name' => $kpCode,
                        'total_attempts' => 0,
                        'correct_attempts' => 0,
                        'mastery_level' => 0,
                        'accuracy_rate' => 0
                    ];
                }

                $knowledgePoints[$kpCode]['total_attempts']++;
                if ($isCorrect) {
                    $knowledgePoints[$kpCode]['correct_attempts']++;
                }
            }
        }

        // 计算准确率和掌握度
        foreach ($knowledgePoints as &$kp) {
            if ($kp['total_attempts'] > 0) {
                $kp['accuracy_rate'] = $kp['correct_attempts'] / $kp['total_attempts'];
                $kp['mastery_level'] = $kp['accuracy_rate'];
            }
        }

        return array_values($knowledgePoints);
    }

    /**
     * 获取当前试卷的知识点掌握情况
     */
    protected function getCurrentPaperKnowledgePoints(): array
    {
        // 首先尝试从当前试卷数据中提取
        $currentPaperKps = $this->extractKnowledgePointsFromCurrentPaper();

        // 如果有历史分析数据，合并以提供更准确的掌握度
        if (!empty($this->analysisData['knowledge_points'])) {
            $historicalKps = $this->analysisData['knowledge_points'];

            foreach ($currentPaperKps as &$currentKp) {
                $kpCode = $currentKp['kp_code'];

                // 查找历史数据
                $historicalData = collect($historicalKps)->firstWhere('kp_code', $kpCode);

                if ($historicalData && isset($historicalData['mastery_level'])) {
                    // 使用历史数据的掌握度，但保留试卷的实际表现
                    $currentKp['historical_mastery_level'] = $historicalData['mastery_level'];
                    $currentKp['total_attempts'] = $historicalData['total_attempts'] ?? $currentKp['total_attempts'];
                    $currentKp['correct_attempts'] = $historicalData['correct_attempts'] ?? $currentKp['correct_attempts'];
                    $currentKp['accuracy_rate'] = $historicalData['accuracy_rate'] ?? $currentKp['accuracy_rate'];

                    // 优先使用历史的掌握度，但考虑试卷表现做微调
                    $paperPerformance = $currentKp['accuracy_rate'];
                    $historicalPerformance = $historicalData['mastery_level'] ?? 0;

                    // 综合计算：70%历史 + 30%本试卷
                    $currentKp['mastery_level'] = ($historicalPerformance * 0.7 + $paperPerformance * 0.3);
                }
            }
        }

        return $currentPaperKps;
    }

    /**
     * 将API的分析结果同步到题目数据和数据库
     */
    protected function syncApiAnalysisToQuestions(array $questionResults)
    {
        try {
            \Log::info('开始同步API分析结果到题目数据', [
                'paper_id' => $this->paperId,
                'question_results_count' => count($questionResults)
            ]);

            // 创建question_id到分析结果的映射
            $analysisMap = [];
            foreach ($questionResults as $result) {
                $questionId = $result['question_id'] ?? null;
                if ($questionId) {
                    $analysisMap[$questionId] = $result;
                }
            }

            // 获取当前试卷的题目
            $paper = \App\Models\Paper::find($this->paperId);
            if ($paper) {
                $paperQuestions = $paper->questions()->get();
                $updatedCount = 0;

                foreach ($paperQuestions as $pq) {
                    // 查找对应的API分析结果
                    if (isset($analysisMap[$pq->question_bank_id])) {
                        $analysis = $analysisMap[$pq->question_bank_id];

                        // 更新数据库字段
                        $pq->is_correct = $analysis['correct'] ?? false;
                        $pq->score_obtained = $analysis['score'] ?? 0;
                        $pq->save();

                        $updatedCount++;

                        \Log::info('更新题目分析结果', [
                            'question_bank_id' => $pq->question_bank_id,
                            'is_correct' => $pq->is_correct,
                            'score_obtained' => $pq->score_obtained
                        ]);
                    }
                }

                \Log::info('API分析结果同步完成', [
                    'updated_count' => $updatedCount,
                    'total_questions' => $paperQuestions->count()
                ]);

                // 刷新recordData中的questions数据
                $this->recordData['questions'] = $this->getQuestions();
            }
        } catch (\Exception $e) {
            \Log::error('同步API分析结果失败', [
                'paper_id' => $this->paperId,
                'error' => $e->getMessage()
            ]);
        }
    }

    /**
     * 提交OCR记录到AI分析API（与系统卷子使用统一接口）
     */
    protected function submitOcrForAnalysis($record)
    {
        try {
            // 获取OCR题目结果（使用校准后的答案）
            $ocrQuestions = OCRQuestionResult::where('ocr_record_id', $record->id)
                ->orderBy('question_number')
                ->get();

            if ($ocrQuestions->isEmpty()) {
                \Log::warning('OCR记录没有题目，无法提交分析', ['record_id' => $record->id]);
                return;
            }

            // 构建答题数据（与系统卷子格式一致）
            $answers = [];
            foreach ($ocrQuestions as $oq) {
                // 使用校准后的答案（manual_answer），如果没有则使用OCR识别的答案
                $studentAnswer = !empty(trim($oq->manual_answer ?? ''))
                    ? trim($oq->manual_answer)
                    : trim($oq->student_answer ?? '');

                $answers[] = [
                    'question_bank_id' => 'ocr_q' . $oq->question_number,  // OCR题目没有题库ID，生成临时ID
                    'question_text' => $oq->question_text ?? '',  // 添加题目内容
                    'student_answer' => $studentAnswer,
                    'is_correct' => null,  // 让AI分析判断
                    'score' => null,  // OCR题目可能没有分数
                    'max_score' => $oq->score_total ?? null,
                    'kp_code' => $oq->kp_code ?? null,
                ];
            }

            // 使用与系统卷子相同的接口提交
            $submissionData = [
                'paper_id' => 'ocr_' . $record->id,  // OCR记录ID作为paper_id
                'answers' => $answers,
            ];

            \Log::info('提交OCR数据到AI分析（统一接口）', [
                'record_id' => $record->id,
                'student_id' => $record->student_id,
                'question_count' => count($answers),
                'api_endpoint' => '/api/v1/attempts/batch/student/' . $record->student_id
            ]);

            // 调用学习分析服务（与系统卷子使用相同的方法）
            $learningService = app(\App\Services\LearningAnalyticsService::class);
            $response = $learningService->submitBatchAttempts($record->student_id, $submissionData);

            if (!empty($response) && !isset($response['error'])) {
                // 从响应中获取analysis_id（如果API返回）
                $analysisId = $response['analysis_id'] ?? $response['data']['analysis_id'] ?? ('batch_' . $record->id . '_' . time());

                // 更新OCR记录的analysis_id
                $record->analysis_id = $analysisId;
                $record->save();

                \Log::info('OCR分析提交成功（统一接口）', [
                    'record_id' => $record->id,
                    'analysis_id' => $analysisId,
                    'response_keys' => array_keys($response)
                ]);

                // 更新recordData
                $this->recordData['analysis_id'] = $analysisId;
            } else {
                \Log::error('OCR分析提交失败', [
                    'record_id' => $record->id,
                    'response' => $response
                ]);
            }
        } catch (\Exception $e) {
            \Log::error('提交OCR分析异常', [
                'record_id' => $record->id,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString()
            ]);
        }
    }
}