Initial commit: Happy Up monorepo through Sprint 5.

Document-driven MVP with FastAPI backend, Vue H5, WeChat mini shell, product demo, and Docker dev stack. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-07-23 11:42:40 +08:00
commit 1aaef71f52
116 changed files with 10550 additions and 0 deletions
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+"""Server-side PDF export for posture reports."""
+
+from __future__ import annotations
+
+from io import BytesIO
+
+from reportlab.lib import colors
+from reportlab.lib.pagesizes import A4
+from reportlab.lib.styles import ParagraphStyle, getSampleStyleSheet
+from reportlab.lib.units import mm
+from reportlab.platypus import Paragraph, SimpleDocTemplate, Spacer, Table, TableStyle
+
+from app.db.models import Child, Report
+from app.services.reports import METRIC_LEVEL_LABELS, RISK_LABELS, report_to_dict
+
+LEVEL_COLORS = {
+    "normal": colors.HexColor("#2bb673"),
+    "low": colors.HexColor("#84cc16"),
+    "medium": colors.HexColor("#f59e0b"),
+    "high": colors.HexColor("#ef4444"),
+}
+
+
+def build_report_pdf(report: Report, child: Child | None = None) -> bytes:
+    payload = report_to_dict(report)
+    buffer = BytesIO()
+    doc = SimpleDocTemplate(
+        buffer,
+        pagesize=A4,
+        leftMargin=18 * mm,
+        rightMargin=18 * mm,
+        topMargin=16 * mm,
+        bottomMargin=16 * mm,
+        title=f"Happy Up Report #{report.id}",
+    )
+
+    styles = getSampleStyleSheet()
+    title_style = ParagraphStyle(
+        "ReportTitle",
+        parent=styles["Heading1"],
+        fontName="Helvetica-Bold",
+        fontSize=18,
+        textColor=colors.HexColor("#1a6fb5"),
+        spaceAfter=8,
+    )
+    body = styles["BodyText"]
+    muted = ParagraphStyle("Muted", parent=body, textColor=colors.HexColor("#6b7280"), fontSize=9)
+
+    child_name = child.name if child else f"儿童 #{report.child_id}"
+    story = [
+        Paragraph("儿童 AI 体态管理 · 筛查报告", title_style),
+        Paragraph(f"儿童：{child_name} · 报告编号 #{report.id}", muted),
+        Spacer(1, 8),
+    ]
+
+    if report.report_type == "movement_scoring":
+        story.extend(_movement_sections(payload, body, muted))
+    else:
+        story.extend(_screening_sections(payload, body, muted))
+
+    story.append(Spacer(1, 10))
+    story.append(Paragraph(payload.get("disclaimer", ""), muted))
+
+    doc.build(story)
+    return buffer.getvalue()
+
+
+def _screening_sections(payload: dict, body, muted) -> list:
+    risk = payload.get("riskLevel", "medium")
+    risk_label = RISK_LABELS.get(risk, risk)
+    sections = [
+        Paragraph(f"<b>风险等级：</b>{risk_label}", body),
+        Paragraph(f"<b>摘要：</b>{payload.get('summary', '')}", body),
+        Spacer(1, 8),
+        Paragraph("<b>指标明细</b>", body),
+    ]
+
+    rows = [["指标", "数值", "等级", "置信度"]]
+    for metric in payload.get("metrics", []):
+        rows.append(
+            [
+                metric.get("name", ""),
+                f"{metric.get('value', 0)}%",
+                METRIC_LEVEL_LABELS.get(metric.get("level", ""), metric.get("level", "")),
+                f"{metric.get('confidence', 0):.0%}",
+            ]
+        )
+
+    table = Table(rows, colWidths=[80, 60, 60, 60])
+    table.setStyle(
+        TableStyle(
+            [
+                ("BACKGROUND", (0, 0), (-1, 0), colors.HexColor("#eef2f7")),
+                ("TEXTCOLOR", (0, 0), (-1, 0), colors.HexColor("#1f2937")),
+                ("GRID", (0, 0), (-1, -1), 0.5, colors.HexColor("#e5e7eb")),
+                ("FONTNAME", (0, 0), (-1, 0), "Helvetica-Bold"),
+                ("ROWBACKGROUNDS", (0, 1), (-1, -1), [colors.white, colors.HexColor("#fafafa")]),
+            ]
+        )
+    )
+    sections.append(table)
+    sections.append(Spacer(1, 8))
+    sections.append(Paragraph("<b>建议</b>", body))
+    for idx, item in enumerate(payload.get("recommendations", []), start=1):
+        sections.append(Paragraph(f"{idx}. {item}", body))
+    return sections
+
+
+def _movement_sections(payload: dict, body, muted) -> list:
+    score = payload.get("score", 0)
+    sections = [
+        Paragraph(f"<b>跟练得分：</b>{score}", body),
+        Paragraph(
+            f"完成 {payload.get('repsCompleted', 0)} 组 · "
+            f"时长 {payload.get('durationSeconds', 0)} 秒",
+            muted,
+        ),
+        Spacer(1, 8),
+        Paragraph("<b>维度评分</b>", body),
+    ]
+    dims = payload.get("dimensions", {})
+    rows = [["维度", "得分"]]
+    for key, label in (
+        ("trajectory", "轨迹"),
+        ("angle", "角度"),
+        ("rhythm", "节奏"),
+        ("stability", "稳定性"),
+        ("completion", "完成度"),
+    ):
+        rows.append([label, str(dims.get(key, "-"))])
+
+    table = Table(rows, colWidths=[120, 80])
+    table.setStyle(
+        TableStyle(
+            [
+                ("BACKGROUND", (0, 0), (-1, 0), colors.HexColor("#eef2f7")),
+                ("GRID", (0, 0), (-1, -1), 0.5, colors.HexColor("#e5e7eb")),
+                ("FONTNAME", (0, 0), (-1, 0), "Helvetica-Bold"),
+            ]
+        )
+    )
+    sections.append(table)
+    return sections