upload

renderer/app/formatting.py

@@ -0,0 +1,66 @@
+from __future__ import annotations
+
+from datetime import datetime
+from typing import Any
+
+
+def _group_thousands(value: str) -> str:
+    parts = []
+    while value:
+        parts.append(value[-3:])
+        value = value[:-3]
+    return ".".join(reversed(parts))
+
+
+def number_de(value: Any, decimals: int = 1) -> str:
+    if value is None:
+        return "-"
+    try:
+        numeric = float(value)
+    except (TypeError, ValueError):
+        return "-"
+
+    sign = "-" if numeric < 0 else ""
+    numeric = abs(numeric)
+    raw = f"{numeric:.{decimals}f}"
+    integer, _, fraction = raw.partition(".")
+    grouped = _group_thousands(integer)
+    return f"{sign}{grouped},{fraction}" if decimals else f"{sign}{grouped}"
+
+
+def currency_de(value: Any, currency: str = "EUR") -> str:
+    symbol = {"EUR": "€", "USD": "$", "GBP": "£"}.get(currency, currency)
+    return f"{number_de(value, 2)} {symbol}"
+
+
+def percent_de(value: Any, decimals: int = 1) -> str:
+    return f"{number_de(value, decimals)} %"
+
+
+def delta_de(value: Any, decimals: int = 1, suffix: str = "%") -> str:
+    if value is None:
+        return "-"
+    numeric = float(value)
+    prefix = "+" if numeric > 0 else ""
+    return f"{prefix}{number_de(numeric, decimals)} {suffix}".strip()
+
+
+def date_de(value: Any) -> str:
+    if not value:
+        return "-"
+    if isinstance(value, datetime):
+        dt = value
+    else:
+        try:
+            dt = datetime.fromisoformat(str(value).replace("Z", "+00:00"))
+        except ValueError:
+            return str(value)
+    return dt.strftime("%d.%m.%Y")
+
+
+def clamp(value: Any, lower: float = 0, upper: float = 100) -> float:
+    try:
+        number = float(value)
+    except (TypeError, ValueError):
+        return lower
+    return max(lower, min(upper, number))