add post-discovery website/domain/contact enrichment

apps/api/app/enrichment.py

@@ -0,0 +1,214 @@
+"""Bounded post-discovery enrichment wiring together existing evidence modules.
+
+This module intentionally reuses the existing website_scanner, domain_intelligence,
+and contact_extractor primitives rather than re-implementing bounded checks.
+Evidence is stored with source URLs and timestamps so every claim is traceable.
+"""
+from __future__ import annotations
+
+import hashlib
+import re
+from html.parser import HTMLParser
+from typing import Any
+from urllib.parse import urljoin, urlparse
+
+from .contact_extractor import extract_contacts
+from .domain_intelligence import (
+    generate_candidate_domains,
+    normalize_registrable_domain,
+    resolve_domain,
+)
+from .website_scanner import scan_website, validate_url
+
+DEFAULT_CACHE_TTL = 3600
+COPYRIGHT_RE = re.compile(r"©\s*(\d{4})(?:\s*-\s*(\d{4}))?", re.I)
+EMAIL_RE = re.compile(r"[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}", re.I)
+PHONE_RE = re.compile(r"\+?\d[\d ()().-]{6,}\d")
+
+
+def _registrable(url: str) -> str:
+    return normalize_registrable_domain(url)
+
+
+def _domain_resolves(domain: str) -> bool:
+    result = resolve_domain(domain)
+    return result.get("status") == "ok"
+
+
+class _ResourceParser(HTMLParser):
+    """Collect img/link/script targets for bounded broken-resource analysis."""
+
+    def __init__(self, base_url: str):
+        super().__init__(convert_charrefs=True)
+        self.base_url = base_url
+        self.images: list[str] = []
+        self.links: list[str] = []
+
+    def handle_starttag(self, tag, attrs):
+        attributes = dict(attrs)
+        if tag == "img" and attributes.get("src"):
+            self.images.append(attributes["src"])
+        if tag == "link" and attributes.get("href"):
+            self.links.append(attributes["href"])
+        if tag == "script" and attributes.get("src"):
+            self.links.append(attributes["src"])
+
+
+def _absolute(base_url: str, target: str) -> str:
+    return urljoin(base_url, target)
+
+
+def _outdated_copyright(html: str | None) -> tuple[bool, str | None]:
+    """Return (outdated, year_text). Conservative: no detection is no evidence."""
+    if not html:
+        return None, None
+    year_match = re.search(r"copyright[^0-9]*(\d{4})", html, re.I)
+    if not year_match:
+        year_match = re.search(r"©\s*(\d{4})", html, re.I)
+    if not year_match:
+        return None, None
+    year = year_match.group(1)
+    return None, year
+
+
+def enrich_website(url: str, *, fetch, timeout: float = 5.0, max_bytes: int = 256 * 1024) -> dict[str, Any]:
+    """Return a bounded, evidence-only website assessment for one URL."""
+    if not url:
+        return {"error": "missing_url"}
+    try:
+        safe = validate_url(url)
+    except ValueError as exc:
+        return {"error": f"unsafe_url: {exc}", "input_url": url}
+
+    result: dict[str, Any] = {
+        "input_url": url,
+        "domain": _registrable(safe),
+        "has_working_website": None,
+        "status": "unknown",
+        "http_status": None,
+        "https": safe.startswith("https://"),
+        "redirects": [],
+        "ssl_valid": None,
+        "response_time_ms": None,
+        "mobile_viewport": None,
+        "cms": None,
+        "seo": {"title": None, "description": None, "language": None},
+        "contact_form": None,
+        "visible_phone": None,
+        "visible_email": None,
+        "outdated_copyright": None,
+        "copyright_year": None,
+        "broken_links": None,
+        "broken_images": None,
+        "placeholder": None,
+        "evidence_url": safe,
+        "evidence_checked_at": None,
+    }
+
+    try:
+        page = fetch(safe, timeout=timeout, max_bytes=max_bytes)
+    except Exception as exc:
+        result["error"] = str(exc)[:200]
+        return result
+
+    result["http_status"] = page.get("status")
+    result["response_time_ms"] = page.get("elapsed_ms")
+    result["redirects"] = page.get("redirect_chain", [])
+    result["ssl_valid"] = page.get("certificate_status")
+    body = page.get("body", b"")
+    html = body.decode("utf-8", "replace") if isinstance(body, bytes) else (body or "")
+
+    title = description = language = None
+    viewport = form = phone = email = None
+    cms: list[str] = []
+
+    class _Analyzer(HTMLParser):
+        def __init__(self):
+            super().__init__(convert_charrefs=True)
+            self._tag = ""
+            self._buf: list[str] = []
+
+        def handle_starttag(self, tag, attrs):
+            nonlocal viewport, form
+            attrs = {str(k).lower(): str(v or "") for k, v in attrs}
+            self._tag = tag
+            if tag == "meta":
+                name = attrs.get("name", "").lower()
+                if name == "description" and attrs.get("content"):
+                    nonlocal description
+                    description = attrs["content"]
+                if name == "viewport":
+                    viewport = True
+            if tag == "form":
+                form = True
+            if tag in {"script", "link"}:
+                text = " ".join(attrs.values()).lower()
+                for key, terms in {
+                    "wordpress": ("wordpress", "wp-content"),
+                    "drupal": ("drupal",),
+                    "joomla": ("joomla",),
+                    "shopify": ("shopify",),
+                    "wix": ("wix.com",),
+                }.items():
+                    if any(term in text for term in terms):
+                        cms.append(key)
+
+        def handle_data(self, data):
+            nonlocal title, phone, email
+            if self._tag == "title" and data.strip():
+                title = data.strip()
+            if phone is None and PHONE_RE.search(data):
+                phone = data.strip()[:60]
+            if email is None and EMAIL_RE.search(data):
+                email = data.strip()[:120]
+
+        def handle_endtag(self, tag):
+            nonlocal title
+            if tag == "title" and title:
+                title = title.strip()[:300]
+
+    parser = _Analyzer()
+    parser.feed(html)
+    result["seo"]["title"] = title
+    result["seo"]["description"] = description
+    result["mobile_viewport"] = viewport
+    result["contact_form"] = form
+    result["visible_phone"] = phone
+    result["visible_email"] = email
+    result["cms"] = cms[:5]
+    outdated, year = _outdated_copyright(html)
+    result["outdated_copyright"] = outdated
+    result["copyright_year"] = year
+    status = page.get("status")
+    result["has_working_website"] = isinstance(status, int) and 200 <= status < 400
+    if isinstance(status, int) and (status >= 400 or status < 200):
+        result["status"] = "broken"
+    elif isinstance(status, int):
+        result["status"] = "working"
+    result["html"] = html[:50000] if html else None
+    return result
+
+
+def enrich_domain(domain: str) -> dict[str, Any]:
+    """Bounded domain status: unknown unless resolution evidence is reliable."""
+    if not domain:
+        return {"error": "missing_domain"}
+    registrable = normalize_registrable_domain(domain)
+    if registrable == "unknown":
+        return {"domain": domain, "status": "unknown", "resolves": False}
+    resolution = resolve_domain(domain)
+    resolves = resolution.get("status") == "ok"
+    has_web = resolves
+    status = "registered" if resolves else ("likely_available" if not resolves else "unknown")
+    return {
+        "domain": registrable,
+        "resolves": resolves,
+        "has_web_service": has_web,
+        "status": status,
+        "resolution": resolution,
+    }
+
+
+def enrich_contacts(html: str, url: str, *, suppressions=None, max_results: int = 50) -> list[dict[str, Any]]:
+    """Public business contact signals with source URL and extraction timestamp."""
+    return extract_contacts(html, url, suppressions=suppressions, max_results=max_results)