Initial version of the E-Invoice solution of JR IT Services

jr_einvoice/mustang.py

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+from __future__ import annotations
+from pathlib import Path
+import subprocess
+
+class MustangError(RuntimeError):
+    pass
+
+def _run(jar: Path, args: list[str], logger) -> subprocess.CompletedProcess[str]:
+    if not jar.exists():
+        raise MustangError(f"Mustang jar not found: {jar}")
+    cmd = ["java", "-Xmx1G", "-Dfile.encoding=UTF-8", "-jar", str(jar)] + args
+    logger.debug("Running Mustang: %s", " ".join(cmd))
+    proc = subprocess.run(cmd, capture_output=True, text=True)
+    logger.debug("Mustang stdout:\n%s", proc.stdout.strip())
+    logger.debug("Mustang stderr:\n%s", proc.stderr.strip())
+    return proc
+
+def combine_facturx(jar: Path, source_pdf: Path, source_xml: Path, out_pdf: Path, logger, profile: str = "E") -> Path:
+    out_pdf.parent.mkdir(parents=True, exist_ok=True)
+    proc = _run(jar, [
+        "--action", "combine",
+        "--source", str(source_pdf),
+        "--source-xml", str(source_xml),
+        "--out", str(out_pdf),
+        "--profile", profile
+    ], logger)
+    if proc.returncode != 0:
+        raise MustangError(f"Mustang combine failed (rc={proc.returncode}). See logs for details.")
+    return out_pdf
+
+def validate(jar: Path, source: Path, out_report: Path, logger, no_notices: bool = True) -> Path:
+    out_report.parent.mkdir(parents=True, exist_ok=True)
+    args = []
+    if no_notices:
+        args += ["--no-notices"]
+    args += ["--action", "validate", "--source", str(source)]
+    proc = _run(jar, args, logger)
+    if proc.returncode != 0:
+        raise MustangError(f"Mustang validate failed (rc={proc.returncode}). See logs for details.")
+    content = proc.stdout.strip() or "<report>empty stdout from Mustang; check logs</report>"
+    out_report.write_text(content, encoding="utf-8")
+    return out_report