AI-Health/health_app/lib/pages/report/ai_analysis_page.dart

import 'package:flutter/material.dart';
import '../../core/app_colors.dart';
import '../../core/app_design_tokens.dart';
import '../../core/app_theme.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../core/navigation_provider.dart';
import '../../widgets/ai_content.dart';
import '../../widgets/app_error_state.dart';
import '../../widgets/common_widgets.dart';
import 'report_pages.dart';

/// AI 解读页：从服务器获取真实报告数据
class AiAnalysisPage extends ConsumerStatefulWidget {
  final String id;
  const AiAnalysisPage({super.key, required this.id});

  @override
  ConsumerState<AiAnalysisPage> createState() => _AiAnalysisPageState();
}

class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      ref.read(reportProvider.notifier).fetchReportDetail(widget.id);
    });
  }

  @override
  Widget build(BuildContext context) {
    final reportState = ref.watch(reportProvider);
    final analysis = reportState.currentAnalysis;
    final reports = reportState.reports;
    final reportItem = reports.where((r) => r.id == widget.id).firstOrNull;

    if (reportState.isLoadingDetail) {
      return GradientScaffold(
        appBar: AppBar(
          leading: IconButton(
            icon: const Icon(Icons.arrow_back),
            onPressed: () => popRoute(ref),
          ),
          title: const Text('报告解读'),
        ),
        body: const Center(
          child: CircularProgressIndicator(color: AppColors.primary),
        ),
      );
    }

    if (analysis == null) {
      return GradientScaffold(
        appBar: AppBar(
          leading: IconButton(
            icon: const Icon(Icons.arrow_back),
            onPressed: () => popRoute(ref),
          ),
          title: const Text('报告解读'),
        ),
        body: AppErrorState(
          title: '报告详情加载失败',
          subtitle: reportState.detailError ?? '暂时无法读取这份报告',
          onRetry: () =>
              ref.read(reportProvider.notifier).fetchReportDetail(widget.id),
        ),
      );
    }

    final displayType = _displayName(analysis.reportType);
    final aiStatus = reportItem?.aiStatus ?? analysis.aiStatus;
    final reviewStatus = reportItem?.reviewStatus ?? analysis.reviewStatus;
    final fileUrl = reportItem?.fileUrl ?? analysis.fileUrl;
    final fileType = reportItem?.type ?? analysis.fileType;
    final isPdf = isPdfReport(fileType, fileUrl ?? '');
    final isReviewed = reviewStatus == 'Reviewed';
    final isAnalyzing = aiStatus == 'Analyzing';
    final isFailed = aiStatus == 'Failed';

    return GradientScaffold(
      appBar: AppBar(
        title: Text(
          displayType,
          style: const TextStyle(
            fontSize: 19,
            fontWeight: FontWeight.w600,
            color: AppColors.textPrimary,
          ),
        ),
        leading: IconButton(
          icon: const Icon(Icons.arrow_back, color: AppColors.textPrimary),
          onPressed: () {
            ref.read(reportProvider.notifier).clearAnalysis();
            popRoute(ref);
          },
        ),
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            if (reportState.detailError != null) ...[
              _detailErrorBanner(reportState.detailError!),
              const SizedBox(height: 12),
            ],
            if (fileUrl != null && fileUrl.isNotEmpty) ...[
              SizedBox(
                width: double.infinity,
                child: OutlinedButton.icon(
                  onPressed: () => pushRoute(
                    ref,
                    'reportOriginal',
                    params: {
                      'url': fileUrl,
                      'title': displayType,
                      'fileType': fileType,
                    },
                  ),
                  icon: Icon(
                    isPdf
                        ? Icons.picture_as_pdf_outlined
                        : Icons.image_outlined,
                    size: 18,
                  ),
                  label: const Text('查看原始报告'),
                  style: OutlinedButton.styleFrom(
                    foregroundColor: AppColors.textPrimary,
                    backgroundColor: Colors.white,
                    side: const BorderSide(color: AppColors.border),
                    padding: const EdgeInsets.symmetric(vertical: 12),
                    shape: RoundedRectangleBorder(
                      borderRadius: AppRadius.mdBorder,
                    ),
                  ),
                ),
              ),
              const SizedBox(height: 12),
            ],
            if (isAnalyzing || isFailed) ...[
              _analysisStateCard(
                isFailed
                    ? (analysis.summary.isNotEmpty
                          ? analysis.summary
                          : 'AI 分析失败，请重新上传或稍后重试')
                    : (reportState.pollingTimedOut
                          ? '分析时间比预期更长，您可以稍后返回此页查看'
                          : 'AI 正在分析报告，请稍后刷新查看'),
                isFailed: isFailed,
                busy: reportState.reanalyzingReportId == widget.id,
                onRetry: isFailed
                    ? () => ref
                          .read(reportProvider.notifier)
                          .reanalyzeReport(widget.id)
                    : null,
              ),
              const SizedBox(height: 20),
            ],
            // 指标分析
            if (!isAnalyzing &&
                !isFailed &&
                analysis.indicators.isNotEmpty) ...[
              _sectionTitle('指标分析'),
              const SizedBox(height: 8),
              Container(
                decoration: _cardDeco(),
                child: Column(
                  children: analysis.indicators
                      .map((ind) => _indicatorRow(ind))
                      .toList(),
                ),
              ),
              const SizedBox(height: 20),
            ],
            // 综合解读
            if (!isAnalyzing && !isFailed) ...[
              _sectionTitle('综合解读'),
              const SizedBox(height: 8),
              Container(
                padding: const EdgeInsets.all(16),
                decoration: _cardDeco(),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    AiMarkdownView(
                      data: analysis.summary.isNotEmpty
                          ? analysis.summary
                          : 'AI 正在分析中，请稍后刷新查看',
                    ),
                    const AiGeneratedNote(),
                  ],
                ),
              ),
              const SizedBox(height: 20),
            ],
            if (!isAnalyzing && !isFailed) ...[
              // 医生审核意见
              _sectionTitle('医生审核意见'),
              const SizedBox(height: 8),
              if (isReviewed && reportItem != null)
                _doctorReviewCard(reportItem)
              else
                Container(
                  padding: const EdgeInsets.all(16),
                  decoration: _cardDeco(),
                  child: const Row(
                    children: [
                      Icon(
                        Icons.hourglass_empty,
                        size: 18,
                        color: AppColors.textHint,
                      ),
                      SizedBox(width: 8),
                      Text(
                        '待审核',
                        style: TextStyle(
                          fontSize: 16,
                          color: AppColors.textSecondary,
                        ),
                      ),
                      Spacer(),
                      Text(
                        'AI 预解读',
                        style: TextStyle(
                          fontSize: 14,
                          color: AppColors.textHint,
                        ),
                      ),
                    ],
                  ),
                ),
            ],
            const SizedBox(height: 30),
          ],
        ),
      ),
    );
  }

  BoxDecoration _cardDeco() =>
      BoxDecoration(color: Colors.white, borderRadius: AppRadius.lgBorder);

  Widget _analysisStateCard(
    String message, {
    required bool isFailed,
    bool busy = false,
    VoidCallback? onRetry,
  }) {
    final color = isFailed ? AppColors.errorText : AppColors.primary;
    return Container(
      padding: const EdgeInsets.all(16),
      decoration: _cardDeco(),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Icon(
                isFailed ? Icons.error_outline : Icons.hourglass_empty,
                color: color,
              ),
              const SizedBox(width: 10),
              Expanded(
                child: Text(
                  message,
                  style: TextStyle(
                    fontSize: 16,
                    height: 1.6,
                    color: isFailed
                        ? AppColors.errorText
                        : AppColors.textPrimary,
                    fontWeight: FontWeight.w600,
                  ),
                ),
              ),
            ],
          ),
          if (onRetry != null) ...[
            const SizedBox(height: 14),
            SizedBox(
              width: double.infinity,
              child: AppGradientOutlineButton(
                label: busy ? '正在重新分析...' : '重新分析',
                loading: busy,
                onPressed: busy ? null : onRetry,
              ),
            ),
          ],
        ],
      ),
    );
  }

  Widget _detailErrorBanner(String message) {
    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: AppColors.errorLight,
        borderRadius: AppRadius.mdBorder,
      ),
      child: Row(
        children: [
          const Icon(Icons.error_outline, color: AppColors.errorText, size: 20),
          const SizedBox(width: 8),
          Expanded(
            child: Text(
              message,
              style: const TextStyle(
                color: AppColors.errorText,
                fontSize: 14,
                fontWeight: FontWeight.w600,
              ),
            ),
          ),
        ],
      ),
    );
  }

  Widget _sectionTitle(String text) => Row(
    children: [
      Container(
        width: 4,
        height: 16,
        decoration: BoxDecoration(
          color: AppColors.primary,
          borderRadius: BorderRadius.circular(2),
        ),
      ),
      const SizedBox(width: 8),
      Text(
        text,
        style: const TextStyle(
          fontSize: 17,
          fontWeight: FontWeight.w700,
          color: AppColors.textPrimary,
        ),
      ),
    ],
  );

  Widget _indicatorRow(Indicator ind) {
    final (color, icon) = switch (ind.status) {
      'high' => (AppColors.errorText, Icons.arrow_upward),
      'low' => (AppColors.warningText, Icons.arrow_downward),
      _ => (AppColors.successText, Icons.check_circle),
    };
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
      decoration: const BoxDecoration(
        border: Border(bottom: BorderSide(color: AppColors.borderLight)),
      ),
      child: Row(
        children: [
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  ind.name,
                  style: const TextStyle(
                    fontSize: 16,
                    fontWeight: FontWeight.w500,
                    color: AppColors.textPrimary,
                  ),
                ),
                if (ind.referenceRange != null &&
                    ind.referenceRange!.isNotEmpty)
                  Text(
                    '参考值: ${ind.referenceRange}',
                    style: const TextStyle(
                      fontSize: 13,
                      color: AppColors.textHint,
                    ),
                  ),
              ],
            ),
          ),
          Icon(icon, size: 14, color: color),
          const SizedBox(width: 4),
          Text(
            '${ind.value} ${ind.unit}',
            style: TextStyle(
              fontSize: 16,
              fontWeight: FontWeight.w600,
              color: color,
            ),
          ),
        ],
      ),
    );
  }

  Widget _doctorReviewCard(ReportItem report) {
    return Container(
      padding: const EdgeInsets.all(16),
      decoration: _cardDeco(),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          if (report.doctorName != null)
            Text(
              '审核医生：${report.doctorName}  |  ${report.reviewedAt?.toLocal().toString().substring(0, 16) ?? ''}',
              style: const TextStyle(fontSize: 14, color: AppColors.textHint),
            ),
          if (report.doctorComment != null &&
              report.doctorComment!.isNotEmpty) ...[
            const SizedBox(height: 10),
            Container(
              padding: const EdgeInsets.all(12),
              decoration: BoxDecoration(
                color: AppColors.cardInner,
                borderRadius: AppRadius.mdBorder,
              ),
              child: Text(
                report.doctorComment!,
                style: const TextStyle(
                  fontSize: 16,
                  color: AppColors.textPrimary,
                  height: 1.5,
                ),
              ),
            ),
          ],
          if (report.doctorRecommendation != null &&
              report.doctorRecommendation!.isNotEmpty) ...[
            const SizedBox(height: 8),
            Container(
              padding: const EdgeInsets.all(12),
              decoration: BoxDecoration(
                color: AppColors.cardInner,
                borderRadius: AppRadius.mdBorder,
              ),
              child: Text(
                report.doctorRecommendation!,
                style: const TextStyle(
                  fontSize: 16,
                  color: AppColors.textPrimary,
                  height: 1.5,
                ),
              ),
            ),
          ],
        ],
      ),
    );
  }

  String _displayName(String t) => (t == 'Other' || t == 'other') ? '检查报告' : t;
}