Jul 16 - Update facilities QR codes - add filters & export PDF

2026-07-16 09:39:05 -04:00
parent 593c630e1b
commit faf4796b4a
4 changed files with 366 additions and 48 deletions
@@ -1589,4 +1589,94 @@ def generate_facility_summary_pdf(facility, days, start, now,
    ))
    doc.build(story)
    return buf.getvalue()
+    return buf.getvalue()
+
+
+def generate_qr_codes_pdf(items, filter_summary: str = '') -> bytes:
+    """Return a PDF byte-string laying out selected QR codes in a grid.
+
+    Parameters
+    ----------
+    items : list of dicts, each:
+        {
+          'title':    str,          # main label (facility or area name)
+          'subtitle': str | None,   # e.g. contract name, or parent facility
+          'caption':  str | None,   # small line under the QR
+          'png':      bytes,        # QR code PNG image bytes
+        }
+    filter_summary : human-readable string describing the selection (optional)
+    """
+    buf          = io.BytesIO()
+    generated_at = datetime.now().strftime('%B %d, %Y  %I:%M %p ET')
+    report_title = 'QR Codes'
+
+    doc = SimpleDocTemplate(
+        buf,
+        pagesize=letter,
+        leftMargin=0.65 * inch,
+        rightMargin=0.65 * inch,
+        topMargin=1.35 * inch,
+        bottomMargin=0.75 * inch,
+        title=report_title,
+        author='Janitorial QC System',
+    )
+
+    def _page_cb(canvas, doc):
+        _on_page(canvas, doc, report_title, generated_at)
+
+    story = []
+    if filter_summary:
+        story.append(Paragraph(f'Filters: {filter_summary}', STYLES['ReportSub']))
+    story.append(Paragraph(
+        f'Total codes: {len(items)}', STYLES['ReportSub']))
+    story.append(Spacer(1, 10))
+
+    if not items:
+        story.append(Paragraph('No QR codes selected.', STYLES['FieldValue']))
+        doc.build(story, onFirstPage=_page_cb, onLaterPages=_page_cb)
+        return buf.getvalue()
+
+    COLS    = 3
+    pw      = letter[0] - 1.3 * inch      # usable width
+    cell_w  = pw / COLS
+    qr_size = 1.7 * inch
+
+    title_style = ParagraphStyle('QRT', fontName='Helvetica-Bold', fontSize=9,
+                                 alignment=TA_CENTER, leading=11, textColor=C_DARK)
+    sub_style   = ParagraphStyle('QRS', fontName='Helvetica', fontSize=7.5,
+                                 alignment=TA_CENTER, leading=9, textColor=C_SLATE)
+    cap_style   = ParagraphStyle('QRC', fontName='Helvetica', fontSize=6.5,
+                                 alignment=TA_CENTER, leading=8, textColor=C_SLATE)
+
+    def _cell(item):
+        flow = [Paragraph(item.get('title') or '', title_style)]
+        if item.get('subtitle'):
+            flow.append(Paragraph(item['subtitle'], sub_style))
+        flow.append(Spacer(1, 4))
+        flow.append(RLImage(io.BytesIO(item['png']), width=qr_size, height=qr_size))
+        if item.get('caption'):
+            flow.append(Spacer(1, 3))
+            flow.append(Paragraph(item['caption'], cap_style))
+        return flow
+
+    rows = []
+    for i in range(0, len(items), COLS):
+        chunk = items[i:i + COLS]
+        row   = [_cell(it) for it in chunk]
+        while len(row) < COLS:
+            row.append('')   # filler cell to keep the grid rectangular
+        rows.append(row)
+
+    tbl = Table(rows, colWidths=[cell_w] * COLS)
+    tbl.setStyle(TableStyle([
+        ('VALIGN',        (0, 0), (-1, -1), 'TOP'),
+        ('ALIGN',         (0, 0), (-1, -1), 'CENTER'),
+        ('TOPPADDING',    (0, 0), (-1, -1), 10),
+        ('BOTTOMPADDING', (0, 0), (-1, -1), 16),
+        ('LEFTPADDING',   (0, 0), (-1, -1), 6),
+        ('RIGHTPADDING',  (0, 0), (-1, -1), 6),
+    ]))
+    story.append(tbl)
+
+    doc.build(story, onFirstPage=_page_cb, onLaterPages=_page_cb)
    return buf.getvalue()