Push the rest

2026-05-11 10:58:46 +02:00
parent adb5c1a439
commit 0031caf16c
94 changed files with 11777 additions and 3474 deletions
--- a/backend/app/core/export.py
+++ b/backend/app/core/export.py
@@ -0,0 +1,82 @@
+from __future__ import annotations
+
+import io
+
+from reportlab.lib import colors
+from reportlab.lib.pagesizes import A4, landscape
+from reportlab.lib.styles import getSampleStyleSheet
+from reportlab.lib.units import cm
+from reportlab.platypus import (
+    Paragraph,
+    SimpleDocTemplate,
+    Spacer,
+    Table,
+    TableStyle,
+)
+
+_PAGE_W, _ = landscape(A4)
+_MARGIN = 1.5 * cm
+_HEADER_BG = colors.HexColor("#1a56db")
+_ROW_BG = colors.HexColor("#eef2ff")
+
+
+def _pdf_table(rows: list[dict]) -> Table:
+    if not rows:
+        table_data: list[list] = [["No data available"]]
+        n_cols = 1
+    else:
+        headers = list(rows[0].keys())
+        n_cols = len(headers)
+        table_data = [headers] + [
+            [str(row.get(h, "")) for h in headers] for row in rows
+        ]
+
+    col_w = (_PAGE_W - 2 * _MARGIN) / n_cols
+    t = Table(table_data, colWidths=[col_w] * n_cols, repeatRows=1)
+
+    style: list = [
+        ("BACKGROUND",    (0, 0), (-1, 0),  _HEADER_BG),
+        ("TEXTCOLOR",     (0, 0), (-1, 0),  colors.white),
+        ("FONTNAME",      (0, 0), (-1, 0),  "Helvetica-Bold"),
+        ("FONTSIZE",      (0, 0), (-1, 0),  8),
+        ("FONTNAME",      (0, 1), (-1, -1), "Helvetica"),
+        ("FONTSIZE",      (0, 1), (-1, -1), 7),
+        ("ALIGN",         (0, 0), (-1, -1), "LEFT"),
+        ("VALIGN",        (0, 0), (-1, -1), "MIDDLE"),
+        ("GRID",          (0, 0), (-1, -1), 0.25, colors.HexColor("#d1d5db")),
+        ("TOPPADDING",    (0, 0), (-1, -1), 3),
+        ("BOTTOMPADDING", (0, 0), (-1, -1), 3),
+        ("LEFTPADDING",   (0, 0), (-1, -1), 5),
+        ("RIGHTPADDING",  (0, 0), (-1, -1), 5),
+    ]
+    for i in range(1, len(table_data)):
+        bg = _ROW_BG if i % 2 == 1 else colors.white
+        style.append(("BACKGROUND", (0, i), (-1, i), bg))
+
+    t.setStyle(TableStyle(style))
+    return t
+
+
+def to_pdf_bytes(rows: list[dict], title: str, subtitle: str = "") -> bytes:
+    """Serialise *rows* to a single-sheet PDF and return the raw bytes."""
+    buf = io.BytesIO()
+    styles = getSampleStyleSheet()
+    story = []
+
+    story.append(Paragraph(title, styles["Title"]))
+    if subtitle:
+        story.append(Spacer(1, 0.2 * cm))
+        story.append(Paragraph(subtitle, styles["Normal"]))
+    story.append(Spacer(1, 0.5 * cm))
+    story.append(_pdf_table(rows))
+
+    doc = SimpleDocTemplate(
+        buf,
+        pagesize=landscape(A4),
+        leftMargin=_MARGIN,
+        rightMargin=_MARGIN,
+        topMargin=_MARGIN,
+        bottomMargin=_MARGIN,
+    )
+    doc.build(story)
+    return buf.getvalue()