<?php

namespace App\Services;

use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

/**
 * 学习分析系统API服务
 * 负责与LearningAnalytics系统交互
 */
class LearningAnalyticsService
{
    /**
     * API基础URL
     */
    private string $baseUrl;

    /**
     * 超时时间（秒）
     */
    private int $timeout;

    public function __construct()
    {
        $this->baseUrl = config('services.learning_analytics.url', 'http://localhost:5016');
        $this->timeout = config('services.learning_analytics.timeout', 30);
    }

    /**
     * 获取学生掌握度概览
     */
    public function getStudentMasteryOverview(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/api/v1/mastery/student/{$studentId}/overview");

            if ($response->successful()) {
                return $response->json();
            }

            Log::warning("获取学生掌握度概览失败", [
                'student_id' => $studentId,
                'status' => $response->status(),
                'response' => $response->body()
            ]);

            return null;
        } catch (\Exception $e) {
            Log::error("获取学生掌握度概览异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学生掌握度列表
     */
    public function getStudentMasteryList(string $studentId, array $filters = []): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/api/v1/mastery/student/{$studentId}", $filters);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学生掌握度列表异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学生技能熟练度
     */
    public function getStudentSkillProficiency(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/api/v1/skill/proficiency/student/{$studentId}");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学生技能熟练度异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学生技能摘要
     */
    public function getStudentSkillSummary(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/api/v1/skill/proficiency/student/{$studentId}/summary");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学生技能摘要异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 创建提分预测
     */
    public function createScorePrediction(array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/api/v1/prediction/score", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("创建提分预测异常", [
                'data' => $data,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学生历史预测
     */
    public function getStudentPredictions(string $studentId, int $limit = 10): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/api/v1/prediction/student/{$studentId}", [
                    'limit' => $limit
                ]);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学生预测记录异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 生成学习路径
     */
    public function generateLearningPath(array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/api/v1/learning-path/generate", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("生成学习路径异常", [
                'data' => $data,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学生学习路径
     */
    public function getStudentLearningPaths(string $studentId, int $limit = 10): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/api/v1/learning-path/student/{$studentId}", [
                    'limit' => $limit
                ]);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学生学习路径异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取预测分析统计
     */
    public function getPredictionAnalytics(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/api/v1/prediction/student/{$studentId}/analytics");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取预测分析统计异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学习路径分析统计
     */
    public function getLearningPathAnalytics(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/api/v1/learning-path/student/{$studentId}/analytics");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学习路径分析统计异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 重新计算掌握度
     */
    public function recalculateMastery(string $studentId, string $kpCode): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/api/v1/mastery/student/{$studentId}/update?kp_code={$kpCode}");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("重新计算掌握度异常", [
                'student_id' => $studentId,
                'kp_code' => $kpCode,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 批量更新技能熟练度
     */
    public function batchUpdateSkillProficiency(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/api/v1/skill/proficiency/student/{$studentId}/batch-update");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("批量更新技能熟练度异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 快速提分预测
     */
    public function quickScorePrediction(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/api/v1/prediction/student/{$studentId}/quick-prediction");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("快速提分预测异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 推荐学习路径
     */
    public function recommendLearningPaths(string $studentId, int $limit = 3): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/api/v1/learning-path/student/{$studentId}/recommend", [
                    'limit' => $limit
                ]);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("推荐学习路径异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * ==================== 新增：从MathRecSys迁移的功能 ====================
     */

    /**
     * 获取学生能力画像
     */
    public function getStudentProfile(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/student/{$studentId}/profile");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学生能力画像异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 智能分析题目/学习
     */
    public function smartAnalyze(string $studentId, array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/student/{$studentId}/analysis", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("智能分析异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学习轨迹
     */
    public function getLearningTrajectory(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/student/{$studentId}/trajectory");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学习轨迹异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取薄弱知识点
     */
    public function getWeakPoints(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/student/{$studentId}/weak-points");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取薄弱知识点异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学习进度
     */
    public function getLearningProgress(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/student/{$studentId}/progress");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学习进度异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取个性化推荐
     */
    public function getRecommendations(string $studentId, array $data = []): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/student/{$studentId}/recommendations", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取个性化推荐异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取班级整体分析
     */
    public function getClassAnalysis(string $classId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/class/{$classId}/analysis");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取班级分析异常", [
                'class_id' => $classId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 批量分析学生
     */
    public function batchAnalyzeStudents(string $classId, array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/class/{$classId}/batch-analysis", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("批量分析学生异常", [
                'class_id' => $classId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取班级排名
     */
    public function getClassRanking(string $classId, string $metric = 'mastery'): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/class/{$classId}/ranking", [
                    'metric' => $metric
                ]);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取班级排名异常", [
                'class_id' => $classId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 与其他班级对比
     */
    public function compareWithOtherClasses(string $classId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/class/{$classId}/comparison");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取班级对比异常", [
                'class_id' => $classId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 提分潜力估算
     */
    public function estimateScoreGain(array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/ability/gain-estimation", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("提分潜力估算异常", [
                'data' => $data,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 评估学生能力
     */
    public function evaluateStudentAbility(array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/ability/evaluate-student-ability", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("评估学生能力异常", [
                'data' => $data,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取学生能力档案
     */
    public function getAbilityProfile(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/ability/student/{$studentId}/ability-profile");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取学生能力档案异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 比较学生能力
     */
    public function compareAbilities(array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/ability/compare-abilities", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("比较学生能力异常", [
                'data' => $data,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 学习问题诊断
     */
    public function diagnosticAnalyze(array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/diagnostic/analyze", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("学习问题诊断异常", [
                'data' => $data,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 学习障碍检测
     */
    public function detectLearningBarriers(array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/diagnostic/learning-barrier-detection", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("学习障碍检测异常", [
                'data' => $data,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 错误概念检测
     */
    public function detectMisconceptions(array $data): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->post("{$this->baseUrl}/diagnostic/misconception-detection", $data);

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("错误概念检测异常", [
                'data' => $data,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取诊断历史
     */
    public function getDiagnosisHistory(string $studentId): ?array
    {
        try {
            $response = Http::timeout($this->timeout)
                ->get("{$this->baseUrl}/diagnostic/student/{$studentId}/learning-diagnosis-history");

            if ($response->successful()) {
                return $response->json();
            }

            return null;
        } catch (\Exception $e) {
            Log::error("获取诊断历史异常", [
                'student_id' => $studentId,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 检查服务健康状态
     */
    public function checkHealth(): bool
    {
        try {
            $response = Http::timeout(5)
                ->get("{$this->baseUrl}/health");

            return $response->successful();
        } catch (\Exception $e) {
            Log::warning("学习分析系统健康检查失败", [
                'error' => $e->getMessage()
            ]);

            return false;
        }
    }
}