fix: analysis

backend/app/services/assessment_service.py

@@ -3,7 +3,7 @@ import logging
 from uuid import UUID
 
 import httpx
-from sqlalchemy import select
+from sqlalchemy import delete, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.core.config import settings
@@ -15,7 +15,14 @@ logger = logging.getLogger(__name__)
 
 
 async def assess_case(case_id: UUID, db: AsyncSession) -> list[FraudAssessment]:
-    """Run rule-based assessment on all non-duplicate transactions and generate reasons."""
+    """Run rule-based assessment on all non-duplicate transactions and replace old results."""
+    # Replace mode: rerun analysis for the same case should overwrite prior assessments
+    # instead of appending duplicated rows.
+    await db.execute(
+        delete(FraudAssessment).where(FraudAssessment.case_id == case_id)
+    )
+    await db.flush()
+
     result = await db.execute(
         select(TransactionRecord)
         .where(TransactionRecord.case_id == case_id)

backend/app/services/report_service.py

@@ -25,15 +25,14 @@ async def generate_report(case_id: UUID, body: ReportCreate, db: AsyncSession) -
     report_dir.mkdir(parents=True, exist_ok=True)
 
     if body.report_type == ReportType.excel:
-        file_path = await _gen_excel(case_id, report_dir, db)
+        file_path = await _gen_excel(case_id, report_dir, body, db)
     elif body.report_type == ReportType.word:
-        file_path = await _gen_word(case_id, report_dir, db)
+        file_path = await _gen_word(case_id, report_dir, body, db)
     else:
-        file_path = await _gen_pdf_placeholder(case_id, report_dir)
+        file_path = await _gen_pdf(case_id, report_dir, body, db)
 
     relative = str(file_path.relative_to(settings.upload_path))
 
-    # snapshot confirmed assessments
     snap_result = await db.execute(
         select(FraudAssessment).where(
             FraudAssessment.case_id == case_id,
@@ -58,99 +57,334 @@ async def generate_report(case_id: UUID, body: ReportCreate, db: AsyncSession) -
     return report
 
 
-async def _gen_excel(case_id: UUID, report_dir: Path, db: AsyncSession) -> Path:
-    from openpyxl import Workbook
+# ── helpers ──
 
-    wb = Workbook()
-
-    # Sheet 1: Summary
-    ws = wb.active
-    ws.title = "被骗金额汇总"
-    ws.append(["交易时间", "金额(元)", "方向", "对方", "来源APP", "备注", "置信度", "认定理由"])
-
-    assessments_result = await db.execute(
+async def _get_confirmed(case_id: UUID, db: AsyncSession) -> list[FraudAssessment]:
+    r = await db.execute(
         select(FraudAssessment).where(
             FraudAssessment.case_id == case_id,
             FraudAssessment.review_status == ReviewStatus.confirmed,
         )
     )
-    for a in assessments_result.scalars().all():
-        tx = await db.get(TransactionRecord, a.transaction_id)
-        if tx:
-            ws.append([
-                tx.trade_time.strftime("%Y-%m-%d %H:%M:%S"),
-                float(a.assessed_amount),
-                "支出" if tx.direction.value == "out" else "收入",
-                tx.counterparty_name,
-                tx.source_app.value,
-                tx.remark,
-                tx.confidence,
-                a.reason[:100],
-            ])
+    return list(r.scalars().all())
 
-    # Sheet 2: All transactions
-    ws2 = wb.create_sheet("交易明细")
-    ws2.append(["交易时间", "金额", "方向", "对方", "来源", "订单号", "是否重复", "是否中转"])
-    tx_result = await db.execute(
+
+async def _get_all_assessments(case_id: UUID, db: AsyncSession) -> dict:
+    r = await db.execute(select(FraudAssessment).where(FraudAssessment.case_id == case_id))
+    return {a.transaction_id: a for a in r.scalars().all()}
+
+
+async def _get_all_transactions(case_id: UUID, db: AsyncSession) -> list[TransactionRecord]:
+    r = await db.execute(
         select(TransactionRecord).where(TransactionRecord.case_id == case_id)
     )
-    for tx in tx_result.scalars().all():
+    return list(r.scalars().all())
+
+
+async def _get_inquiry_suggestions(case_id: UUID, db: AsyncSession) -> list[str]:
+    from app.services.assessment_service import generate_inquiry_suggestions
+    return await generate_inquiry_suggestions(case_id, db)
+
+
+# ── Excel ──
+
+async def _gen_excel(case_id: UUID, report_dir: Path, body: ReportCreate, db: AsyncSession) -> Path:
+    from openpyxl import Workbook
+
+    wb = Workbook()
+    sheet_created = False
+
+    if body.include_summary:
+        ws = wb.active if not sheet_created else wb.create_sheet()
+        ws.title = "被骗金额汇总"
+        ws.append(["交易时间", "金额(元)", "方向", "对方", "来源APP", "备注", "置信度", "认定理由"])
+        for a in await _get_confirmed(case_id, db):
+            tx = await db.get(TransactionRecord, a.transaction_id)
+            if tx:
+                ws.append([
+                    tx.trade_time.strftime("%Y-%m-%d %H:%M:%S"),
+                    float(a.assessed_amount),
+                    "支出" if tx.direction.value == "out" else "收入",
+                    tx.counterparty_name,
+                    tx.source_app.value,
+                    tx.remark,
+                    tx.confidence,
+                    a.reason[:100],
+                ])
+        sheet_created = True
+
+    if body.include_transactions:
+        ws2 = wb.active if not sheet_created else wb.create_sheet()
+        if not sheet_created:
+            ws2.title = "交易明细"
+        else:
+            ws2.title = "交易明细"
         ws2.append([
-            tx.trade_time.strftime("%Y-%m-%d %H:%M:%S"),
-            float(tx.amount),
-            tx.direction.value,
-            tx.counterparty_name,
-            tx.source_app.value,
-            tx.order_no,
-            "是" if tx.is_duplicate else "否",
-            "是" if tx.is_transit else "否",
+            "交易ID", "证据图片ID", "交易时间", "金额(元)", "方向", "来源APP",
+            "对方名称", "对方账号", "本方账户尾号", "订单号", "备注", "识别置信度",
+            "是否重复", "是否中转", "聚类ID", "记录创建时间",
+            "认定置信等级", "认定金额(元)", "认定理由", "排除条件",
+            "复核状态", "复核备注", "复核人", "复核时间",
         ])
+        assessment_by_tx = await _get_all_assessments(case_id, db)
+        for tx in await _get_all_transactions(case_id, db):
+            fa = assessment_by_tx.get(tx.id)
+            ws2.append([
+                str(tx.id),
+                str(tx.evidence_image_id) if tx.evidence_image_id else "",
+                tx.trade_time.strftime("%Y-%m-%d %H:%M:%S"),
+                float(tx.amount),
+                tx.direction.value,
+                tx.source_app.value,
+                tx.counterparty_name,
+                tx.counterparty_account,
+                tx.self_account_tail_no,
+                tx.order_no,
+                tx.remark,
+                float(tx.confidence),
+                "是" if tx.is_duplicate else "否",
+                "是" if tx.is_transit else "否",
+                str(tx.cluster_id) if tx.cluster_id else "",
+                tx.created_at.strftime("%Y-%m-%d %H:%M:%S") if tx.created_at else "",
+                fa.confidence_level.value if fa else "",
+                float(fa.assessed_amount) if fa else "",
+                fa.reason if fa else "",
+                fa.exclude_reason if fa else "",
+                fa.review_status.value if fa else "",
+                fa.review_note if fa else "",
+                fa.reviewed_by if fa else "",
+                fa.reviewed_at.strftime("%Y-%m-%d %H:%M:%S") if (fa and fa.reviewed_at) else "",
+            ])
+        sheet_created = True
+
+    if body.include_reasons:
+        ws3 = wb.active if not sheet_created else wb.create_sheet()
+        ws3.title = "认定理由与排除说明"
+        ws3.append(["交易时间", "金额(元)", "置信等级", "认定理由", "排除条件", "复核状态"])
+        assessment_by_tx = await _get_all_assessments(case_id, db)
+        for tx in await _get_all_transactions(case_id, db):
+            fa = assessment_by_tx.get(tx.id)
+            if not fa:
+                continue
+            ws3.append([
+                tx.trade_time.strftime("%Y-%m-%d %H:%M:%S"),
+                float(tx.amount),
+                fa.confidence_level.value,
+                fa.reason,
+                fa.exclude_reason,
+                fa.review_status.value,
+            ])
+        sheet_created = True
+
+    if body.include_inquiry:
+        ws4 = wb.active if not sheet_created else wb.create_sheet()
+        ws4.title = "笔录辅助问询建议"
+        ws4.append(["序号", "问询建议"])
+        suggestions = await _get_inquiry_suggestions(case_id, db)
+        for i, s in enumerate(suggestions, 1):
+            ws4.append([i, s])
+        sheet_created = True
+
+    if not sheet_created:
+        ws = wb.active
+        ws.title = "报告"
+        ws.append(["未选择任何报告内容"])
 
     file_path = report_dir / f"report_{uuid.uuid4().hex[:8]}.xlsx"
     wb.save(file_path)
     return file_path
 
 
-async def _gen_word(case_id: UUID, report_dir: Path, db: AsyncSession) -> Path:
+# ── Word ──
+
+async def _gen_word(case_id: UUID, report_dir: Path, body: ReportCreate, db: AsyncSession) -> Path:
     from docx import Document
 
     doc = Document()
     doc.add_heading("受害人被骗金额汇总报告", level=1)
 
-    assessments_result = await db.execute(
-        select(FraudAssessment).where(
-            FraudAssessment.case_id == case_id,
-            FraudAssessment.review_status == ReviewStatus.confirmed,
-        )
-    )
-    confirmed = list(assessments_result.scalars().all())
-    total = sum(float(a.assessed_amount) for a in confirmed)
+    if body.include_summary:
+        confirmed = await _get_confirmed(case_id, db)
+        total = sum(float(a.assessed_amount) for a in confirmed)
+        doc.add_paragraph(f"已确认被骗金额: ¥{total:,.2f}")
+        doc.add_paragraph(f"已确认交易笔数: {len(confirmed)}")
+        table = doc.add_table(rows=1, cols=4)
+        table.style = "Table Grid"
+        hdr = table.rows[0].cells
+        hdr[0].text, hdr[1].text, hdr[2].text, hdr[3].text = "交易时间", "金额(元)", "对方", "认定理由"
+        for a in confirmed:
+            tx = await db.get(TransactionRecord, a.transaction_id)
+            row = table.add_row().cells
+            row[0].text = tx.trade_time.strftime("%Y-%m-%d %H:%M") if tx else ""
+            row[1].text = f"{float(a.assessed_amount):,.2f}"
+            row[2].text = tx.counterparty_name if tx else ""
+            row[3].text = a.reason[:80]
 
-    doc.add_paragraph(f"已确认被骗金额: ¥{total:,.2f}")
-    doc.add_paragraph(f"已确认交易笔数: {len(confirmed)}")
+    if body.include_transactions:
+        doc.add_heading("交易明细", level=2)
+        table2 = doc.add_table(rows=1, cols=6)
+        table2.style = "Table Grid"
+        for i, h in enumerate(["交易时间", "金额", "方向", "对方", "订单号", "备注"]):
+            table2.rows[0].cells[i].text = h
+        for tx in await _get_all_transactions(case_id, db):
+            row = table2.add_row().cells
+            row[0].text = tx.trade_time.strftime("%Y-%m-%d %H:%M")
+            row[1].text = f"{float(tx.amount):,.2f}"
+            row[2].text = tx.direction.value
+            row[3].text = tx.counterparty_name[:20]
+            row[4].text = tx.order_no[:20]
+            row[5].text = tx.remark[:30]
 
-    table = doc.add_table(rows=1, cols=4)
-    table.style = "Table Grid"
-    hdr = table.rows[0].cells
-    hdr[0].text = "交易时间"
-    hdr[1].text = "金额(元)"
-    hdr[2].text = "对方"
-    hdr[3].text = "认定理由"
+    if body.include_reasons:
+        doc.add_heading("认定理由与排除说明", level=2)
+        assessment_by_tx = await _get_all_assessments(case_id, db)
+        for tx in await _get_all_transactions(case_id, db):
+            fa = assessment_by_tx.get(tx.id)
+            if not fa:
+                continue
+            doc.add_paragraph(
+                f"[{tx.trade_time.strftime('%Y-%m-%d %H:%M')}] ¥{float(tx.amount):,.2f} "
+                f"— {fa.confidence_level.value} — {fa.reason[:100]}"
+            )
+            if fa.exclude_reason:
+                doc.add_paragraph(f"  排除条件: {fa.exclude_reason[:100]}")
 
-    for a in confirmed:
-        tx = await db.get(TransactionRecord, a.transaction_id)
-        row = table.add_row().cells
-        row[0].text = tx.trade_time.strftime("%Y-%m-%d %H:%M") if tx else ""
-        row[1].text = f"{float(a.assessed_amount):,.2f}"
-        row[2].text = tx.counterparty_name if tx else ""
-        row[3].text = a.reason[:80]
+    if body.include_inquiry:
+        doc.add_heading("笔录辅助问询建议", level=2)
+        suggestions = await _get_inquiry_suggestions(case_id, db)
+        for i, s in enumerate(suggestions, 1):
+            doc.add_paragraph(f"{i}. {s}")
 
     file_path = report_dir / f"report_{uuid.uuid4().hex[:8]}.docx"
     doc.save(file_path)
     return file_path
 
 
-async def _gen_pdf_placeholder(case_id: UUID, report_dir: Path) -> Path:
+# ── PDF ──
+
+async def _gen_pdf(case_id: UUID, report_dir: Path, body: ReportCreate, db: AsyncSession) -> Path:
+    from reportlab.lib.pagesizes import A4
+    from reportlab.lib import colors
+    from reportlab.lib.units import mm
+    from reportlab.platypus import SimpleDocTemplate, Table as RLTable, TableStyle, Paragraph, Spacer
+    from reportlab.lib.styles import getSampleStyleSheet
+    from reportlab.pdfbase import pdfmetrics
+    from reportlab.pdfbase.ttfonts import TTFont
+    import os
+
+    font_registered = False
+    for font_path in [
+        "/System/Library/Fonts/PingFang.ttc",
+        "/System/Library/Fonts/STHeiti Medium.ttc",
+        "/usr/share/fonts/truetype/noto/NotoSansCJK-Regular.ttc",
+        "/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc",
+    ]:
+        if os.path.exists(font_path):
+            try:
+                pdfmetrics.registerFont(TTFont("ChineseFont", font_path, subfontIndex=0))
+                font_registered = True
+                break
+            except Exception:
+                continue
+
+    font_name = "ChineseFont" if font_registered else "Helvetica"
+    styles = getSampleStyleSheet()
+    title_style = styles["Title"]
+    title_style.fontName = font_name
+    normal_style = styles["Normal"]
+    normal_style.fontName = font_name
+    h2_style = styles["Heading2"]
+    h2_style.fontName = font_name
+
     file_path = report_dir / f"report_{uuid.uuid4().hex[:8]}.pdf"
-    file_path.write_text("PDF report placeholder – integrate weasyprint/reportlab for production.")
+    doc = SimpleDocTemplate(str(file_path), pagesize=A4,
+                            leftMargin=15 * mm, rightMargin=15 * mm,
+                            topMargin=20 * mm, bottomMargin=20 * mm)
+    elements = []
+    elements.append(Paragraph("受害人被骗金额汇总报告", title_style))
+    elements.append(Spacer(1, 10 * mm))
+
+    def _make_table(header, rows, col_widths):
+        data = [header] + rows
+        tbl = RLTable(data, colWidths=col_widths, repeatRows=1)
+        tbl.setStyle(TableStyle([
+            ("FONTNAME", (0, 0), (-1, -1), font_name),
+            ("FONTSIZE", (0, 0), (-1, -1), 8),
+            ("BACKGROUND", (0, 0), (-1, 0), colors.HexColor("#1677ff")),
+            ("TEXTCOLOR", (0, 0), (-1, 0), colors.white),
+            ("GRID", (0, 0), (-1, -1), 0.5, colors.grey),
+            ("VALIGN", (0, 0), (-1, -1), "TOP"),
+            ("TOPPADDING", (0, 0), (-1, -1), 3),
+            ("BOTTOMPADDING", (0, 0), (-1, -1), 3),
+        ]))
+        return tbl
+
+    if body.include_summary:
+        confirmed = await _get_confirmed(case_id, db)
+        total = sum(float(a.assessed_amount) for a in confirmed)
+        elements.append(Paragraph(f"已确认被骗金额: ¥{total:,.2f}", normal_style))
+        elements.append(Paragraph(f"已确认交易笔数: {len(confirmed)}", normal_style))
+        elements.append(Spacer(1, 6 * mm))
+        header = ["交易时间", "金额(元)", "对方", "认定理由"]
+        rows = []
+        for a in confirmed:
+            tx = await db.get(TransactionRecord, a.transaction_id)
+            rows.append([
+                tx.trade_time.strftime("%Y-%m-%d %H:%M") if tx else "",
+                f"{float(a.assessed_amount):,.2f}",
+                (tx.counterparty_name if tx else "")[:20],
+                Paragraph(a.reason[:120], normal_style),
+            ])
+        if rows:
+            elements.append(_make_table(header, rows, [38*mm, 25*mm, 35*mm, 72*mm]))
+        else:
+            elements.append(Paragraph("暂无已确认交易记录。", normal_style))
+        elements.append(Spacer(1, 8 * mm))
+
+    if body.include_transactions:
+        elements.append(Paragraph("交易明细", h2_style))
+        elements.append(Spacer(1, 4 * mm))
+        header = ["交易时间", "金额", "方向", "对方", "订单号"]
+        rows = []
+        for tx in await _get_all_transactions(case_id, db):
+            rows.append([
+                tx.trade_time.strftime("%Y-%m-%d %H:%M"),
+                f"{float(tx.amount):,.2f}",
+                "出" if tx.direction.value == "out" else "入",
+                tx.counterparty_name[:16],
+                tx.order_no[:16],
+            ])
+        if rows:
+            elements.append(_make_table(header, rows, [38*mm, 22*mm, 12*mm, 48*mm, 48*mm]))
+        elements.append(Spacer(1, 8 * mm))
+
+    if body.include_reasons:
+        elements.append(Paragraph("认定理由与排除说明", h2_style))
+        elements.append(Spacer(1, 4 * mm))
+        assessment_by_tx = await _get_all_assessments(case_id, db)
+        for tx in await _get_all_transactions(case_id, db):
+            fa = assessment_by_tx.get(tx.id)
+            if not fa:
+                continue
+            line = (
+                f"[{tx.trade_time.strftime('%m-%d %H:%M')}] ¥{float(tx.amount):,.2f} "
+                f"| {fa.confidence_level.value} | {fa.reason[:80]}"
+            )
+            elements.append(Paragraph(line, normal_style))
+            if fa.exclude_reason:
+                elements.append(Paragraph(f"  排除: {fa.exclude_reason[:80]}", normal_style))
+        elements.append(Spacer(1, 8 * mm))
+
+    if body.include_inquiry:
+        elements.append(Paragraph("笔录辅助问询建议", h2_style))
+        elements.append(Spacer(1, 4 * mm))
+        suggestions = await _get_inquiry_suggestions(case_id, db)
+        for i, s in enumerate(suggestions, 1):
+            elements.append(Paragraph(f"{i}. {s}", normal_style))
+        elements.append(Spacer(1, 8 * mm))
+
+    if not elements or len(elements) <= 2:
+        elements.append(Paragraph("未选择任何报告内容。", normal_style))
+
+    doc.build(elements)
     return file_path