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| 1 | +"""Generate a sustainability compliance dashboard for CTRL Environmental. |
| 2 | +
|
| 3 | +The script reads inspection data from CSV or Excel files, categorizes findings |
| 4 | +into environmental topics, flags non-compliances with traffic-light colours, |
| 5 | +and exports the results to a styled HTML report. Optional PDF export is |
| 6 | +attempted, preferring WeasyPrint with a fallback to pdfkit when available. |
| 7 | +The layout uses a black, red, and white palette reminiscent of Berlin poster |
| 8 | +art and includes placeholders for the CTRL logo and report metadata. |
| 9 | +""" |
| 10 | + |
| 11 | +from __future__ import annotations |
| 12 | + |
| 13 | +import argparse |
| 14 | +import logging |
| 15 | +import re |
| 16 | +from dataclasses import dataclass, field |
| 17 | +from datetime import UTC, datetime |
| 18 | +from pathlib import Path |
| 19 | + |
| 20 | +import pandas as pd |
| 21 | +from jinja2 import Environment, FileSystemLoader, select_autoescape |
| 22 | + |
| 23 | +# Optional PDF backends |
| 24 | +try: |
| 25 | + import pdfkit |
| 26 | +except ImportError: # pragma: no cover - optional dependency |
| 27 | + pdfkit = None # type: ignore[assignment] |
| 28 | +try: |
| 29 | + from weasyprint import HTML |
| 30 | +except ImportError: # pragma: no cover - optional dependency |
| 31 | + HTML = None # type: ignore[assignment] |
| 32 | + |
| 33 | +logging.basicConfig(level=logging.INFO) |
| 34 | + |
| 35 | +# Regex for safer status parsing |
| 36 | +_NEG = re.compile( |
| 37 | + r"\b(?:major\s*nc|fail|non[-\s]?compliance|(?:^|[^a-z])nc(?:$|[^a-z]))\b", re.I |
| 38 | +) |
| 39 | +_AMB = re.compile(r"\b(?:minor|observation|warning)\b", re.I) |
| 40 | + |
| 41 | +CATEGORY_KEYWORDS = { |
| 42 | + "Waste": ["waste", "trash", "garbage", "recycle"], |
| 43 | + "Water": ["water", "effluent", "sewage", "storm"], |
| 44 | + "Air": ["air", "emission", "dust", "smoke"], |
| 45 | + "Chemicals": ["chemical", "hazard", "solvent", "acid", "alkali"], |
| 46 | + "ESG": ["esg", "governance", "social", "sustainability", "diversity"], |
| 47 | +} |
| 48 | + |
| 49 | + |
| 50 | +@dataclass |
| 51 | +class Metadata: |
| 52 | + """Metadata describing the inspection report.""" |
| 53 | + |
| 54 | + site: str |
| 55 | + client: str |
| 56 | + inspector: str |
| 57 | + logo: str |
| 58 | + date: str = field( |
| 59 | + default_factory=lambda: datetime.now(UTC).strftime("%Y-%m-%d %H:%M UTC") |
| 60 | + ) |
| 61 | + |
| 62 | + |
| 63 | +def read_inspection_data(path: str) -> pd.DataFrame: |
| 64 | + """Read inspection data from a CSV or Excel file.""" |
| 65 | + |
| 66 | + ext = Path(path).suffix.lower() |
| 67 | + if ext in {".xls", ".xlsx"}: |
| 68 | + return pd.read_excel(path) |
| 69 | + return pd.read_csv(path) |
| 70 | + |
| 71 | + |
| 72 | +def categorize_finding(text: str) -> str: |
| 73 | + """Return the category that best matches *text*.""" |
| 74 | + |
| 75 | + lowered = text.lower() |
| 76 | + for category, keywords in CATEGORY_KEYWORDS.items(): |
| 77 | + if any(word in lowered for word in keywords): |
| 78 | + return category |
| 79 | + return "Other" |
| 80 | + |
| 81 | + |
| 82 | +def traffic_light(status: str) -> str: |
| 83 | + """Return a CSS colour for a traffic-light style status.""" |
| 84 | + |
| 85 | + s = (status or "").strip() |
| 86 | + if _NEG.search(s): |
| 87 | + return "#d50000" # red |
| 88 | + if _AMB.search(s): |
| 89 | + return "#ffab00" # amber |
| 90 | + return "#00c853" # green |
| 91 | + |
| 92 | + |
| 93 | +def style_dataframe(df: pd.DataFrame) -> pd.io.formats.style.Styler: |
| 94 | + """Apply traffic-light styling to status columns in *df* and hide the index.""" |
| 95 | + |
| 96 | + subset_cols = [c for c in df.columns if c.strip().lower() == "status"] |
| 97 | + styler = df.style |
| 98 | + if subset_cols: |
| 99 | + styler = styler.map( |
| 100 | + lambda v: f"background-color:{traffic_light(v)}", subset=subset_cols |
| 101 | + ) |
| 102 | + return styler.hide(axis="index") |
| 103 | + |
| 104 | + |
| 105 | +# Jinja environment |
| 106 | +env = Environment( |
| 107 | + loader=FileSystemLoader("templates"), |
| 108 | + autoescape=select_autoescape(["html", "xml"]), |
| 109 | +) |
| 110 | + |
| 111 | + |
| 112 | +def render_report( |
| 113 | + df: pd.DataFrame, metadata: Metadata, html_out: str, pdf_out: str | None = None |
| 114 | +) -> None: |
| 115 | + """Render *df* to HTML and optionally PDF.""" |
| 116 | + |
| 117 | + styled_html = style_dataframe(df).to_html() |
| 118 | + template = env.get_template("report.html.j2") |
| 119 | + report_html = template.render(metadata=metadata, table_html=styled_html) |
| 120 | + |
| 121 | + Path(html_out).write_text(report_html, encoding="utf-8") |
| 122 | + logging.info("Report written to %s", html_out) |
| 123 | + |
| 124 | + if pdf_out: |
| 125 | + if HTML: |
| 126 | + try: |
| 127 | + HTML(filename=html_out).write_pdf(pdf_out) # type: ignore[no-untyped-call] |
| 128 | + logging.info("PDF written via WeasyPrint to %s", pdf_out) |
| 129 | + return |
| 130 | + except Exception as exc: # noqa: BLE001 # pragma: no cover - optional dependency |
| 131 | + logging.warning("WeasyPrint failed (%s); falling back to pdfkit", exc) |
| 132 | + if pdfkit: |
| 133 | + try: |
| 134 | + pdfkit.from_file(html_out, pdf_out) # type: ignore[no-untyped-call] |
| 135 | + logging.info("PDF written via pdfkit to %s", pdf_out) |
| 136 | + except OSError as exc: # wkhtmltopdf missing |
| 137 | + logging.warning("pdfkit failed (%s); skipped PDF export", exc) |
| 138 | + else: |
| 139 | + logging.warning("No PDF backend available; skipped PDF export") |
| 140 | + |
| 141 | + |
| 142 | +def main() -> None: |
| 143 | + """Command line interface for the compliance dashboard.""" |
| 144 | + |
| 145 | + parser = argparse.ArgumentParser(description=__doc__) |
| 146 | + parser.add_argument("input", help="CSV or Excel file containing inspection data") |
| 147 | + parser.add_argument("--html", default="report.html", help="Output HTML report path") |
| 148 | + parser.add_argument("--pdf", help="Optional output PDF path") |
| 149 | + parser.add_argument( |
| 150 | + "--logo", default="logo_placeholder.png", help="Path to CTRL logo" |
| 151 | + ) |
| 152 | + parser.add_argument("--site", default="Unknown Site") |
| 153 | + parser.add_argument("--client", default="Unknown Client") |
| 154 | + parser.add_argument("--inspector", default="Unknown Inspector") |
| 155 | + parser.add_argument("--date", help="Report date (defaults to now UTC)") |
| 156 | + args = parser.parse_args() |
| 157 | + |
| 158 | + data = read_inspection_data(args.input) |
| 159 | + if "Category" not in data.columns and "Finding" in data.columns: |
| 160 | + data["Category"] = data["Finding"].map(categorize_finding) |
| 161 | + |
| 162 | + meta_kwargs = { |
| 163 | + "site": args.site, |
| 164 | + "client": args.client, |
| 165 | + "inspector": args.inspector, |
| 166 | + "logo": args.logo, |
| 167 | + } |
| 168 | + if args.date: |
| 169 | + meta_kwargs["date"] = args.date |
| 170 | + metadata = Metadata(**meta_kwargs) |
| 171 | + render_report(data, metadata, args.html, args.pdf) |
| 172 | + print(f"Report written to {args.html}") |
| 173 | + |
| 174 | + |
| 175 | +if __name__ == "__main__": |
| 176 | + main() |
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