360 lines
17 KiB
Python
360 lines
17 KiB
Python
from typing import Tuple
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import json
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import logging
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import re
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from datetime import datetime
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from typing import Optional, Dict, Any, List
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from sqlalchemy.orm import Session
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from backend.database import Company, Industry, RoboticsCategory, EnrichmentData
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from backend.lib.core_utils import call_gemini_flash, safe_eval_math, run_serp_search
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from backend.services.scraping import scrape_website_content
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from backend.lib.metric_parser import MetricParser
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logger = logging.getLogger(__name__)
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class ClassificationService:
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def __init__(self):
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pass
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def _load_industry_definitions(self, db: Session) -> List[Industry]:
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industries = db.query(Industry).all()
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if not industries:
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logger.warning("No industry definitions found in DB. Classification might be limited.")
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return industries
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def _get_wikipedia_content(self, db: Session, company_id: int) -> Optional[Dict[str, Any]]:
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enrichment = db.query(EnrichmentData).filter(
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EnrichmentData.company_id == company_id,
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EnrichmentData.source_type == "wikipedia"
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).order_by(EnrichmentData.created_at.desc()).first()
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return enrichment.content if enrichment and enrichment.content else None
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def _run_llm_classification_prompt(self, website_text: str, company_name: str, industry_definitions: List[Dict[str, str]]) -> Optional[str]:
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prompt = f"""
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Act as a strict B2B Industry Classifier.
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Company: {company_name}
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Context: {website_text[:3000]}
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Available Industries:
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{json.dumps(industry_definitions, indent=2)}
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Task: Select the ONE industry that best matches the company.
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If the company is a Hospital/Klinik, select 'Healthcare - Hospital'.
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If none match well, select 'Others'.
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Return ONLY the exact name of the industry.
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"""
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try:
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response = call_gemini_flash(prompt)
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if not response: return "Others"
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cleaned = response.strip().replace('"', '').replace("'", "")
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# Simple fuzzy match check
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valid_names = [i['name'] for i in industry_definitions] + ["Others"]
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if cleaned in valid_names:
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return cleaned
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# Fallback: Try to find name in response
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for name in valid_names:
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if name in cleaned:
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return name
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return "Others"
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except Exception as e:
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logger.error(f"Classification Prompt Error: {e}")
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return "Others"
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def _run_llm_metric_extraction_prompt(self, text_content: str, search_term: str, industry_name: str) -> Optional[Dict[str, Any]]:
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prompt = f"""
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Extract the following metric for the company in industry '{industry_name}':
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Target Metric: "{search_term}"
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Source Text:
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{text_content[:6000]}
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Return a JSON object with:
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- "raw_value": The number found (e.g. 352 or 352.0). If not found, null.
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- "raw_unit": The unit found (e.g. "Betten", "m²").
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- "proof_text": A short quote from the text proving this value.
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**IMPORTANT:** Ignore obvious year numbers (like 1900-2026) if other, more plausible metric values are present in the text. Focus on the target metric.
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JSON ONLY.
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"""
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try:
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response = call_gemini_flash(prompt, json_mode=True)
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if not response: return None
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if isinstance(response, str):
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response = response.replace("```json", "").replace("```", "").strip()
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data = json.loads(response)
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else:
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data = response
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# Basic cleanup
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if data.get("raw_value") == "null": data["raw_value"] = None
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return data
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except Exception as e:
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logger.error(f"LLM Extraction Parse Error: {e}")
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return None
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def _is_metric_plausible(self, metric_name: str, value: Optional[float]) -> bool:
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if value is None: return False
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try:
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val_float = float(value)
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return val_float > 0
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except:
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return False
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def _parse_standardization_logic(self, formula: str, raw_value: float) -> Optional[float]:
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if not formula or raw_value is None:
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return None
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formula_cleaned = formula.replace("wert", str(raw_value)).replace("Value", str(raw_value)).replace("Wert", str(raw_value))
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formula_cleaned = re.sub(r'(?i)m[²2]', '', formula_cleaned)
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formula_cleaned = re.sub(r'(?i)qm', '', formula_cleaned)
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formula_cleaned = re.sub(r'\s*\(.*\)\s*$', '', formula_cleaned).strip()
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try:
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return safe_eval_math(formula_cleaned)
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except Exception as e:
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logger.error(f"Failed to parse standardization logic '{formula}' with value {raw_value}: {e}")
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return None
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def _get_best_metric_result(self, results_list: List[Dict[str, Any]]) -> Optional[Dict[str, Any]]:
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if not results_list:
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return None
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source_priority = {"wikipedia": 0, "website": 1, "serpapi": 2}
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valid_results = [r for r in results_list if r.get("calculated_metric_value") is not None]
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if not valid_results:
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return None
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valid_results.sort(key=lambda r: (source_priority.get(r.get("metric_source"), 99), -r.get("metric_confidence", 0.0)))
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logger.info(f"Best result chosen: {valid_results[0]}")
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return valid_results[0]
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def _get_website_content_and_url(self, company: Company) -> Tuple[Optional[str], Optional[str]]:
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return scrape_website_content(company.website), company.website
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def _get_wikipedia_content_and_url(self, db: Session, company_id: int) -> Tuple[Optional[str], Optional[str]]:
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wiki_data = self._get_wikipedia_content(db, company_id)
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return (wiki_data.get('full_text'), wiki_data.get('url')) if wiki_data else (None, None)
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def _get_serpapi_content_and_url(self, company: Company, search_term: str) -> Tuple[Optional[str], Optional[str]]:
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serp_results = run_serp_search(f"{company.name} {company.city or ''} {search_term}")
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if not serp_results:
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return None, None
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content = " ".join([res.get("snippet", "") for res in serp_results.get("organic_results", [])])
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url = serp_results.get("organic_results", [{}])[0].get("link") if serp_results.get("organic_results") else None
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return content, url
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def _extract_and_calculate_metric_cascade(self, db: Session, company: Company, industry_name: str, search_term: str, standardization_logic: Optional[str], standardized_unit: Optional[str]) -> Dict[str, Any]:
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final_result = {"calculated_metric_name": search_term, "calculated_metric_value": None, "calculated_metric_unit": None, "standardized_metric_value": None, "standardized_metric_unit": standardized_unit, "metric_source": None, "metric_proof_text": None, "metric_source_url": None, "metric_confidence": 0.0, "metric_confidence_reason": "No value found in any source."}
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sources = [
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("website", self._get_website_content_and_url),
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("wikipedia", self._get_wikipedia_content_and_url),
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("serpapi", self._get_serpapi_content_and_url)
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]
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all_source_results = []
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for source_name, content_loader in sources:
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logger.info(f"Checking {source_name} for '{search_term}' for {company.name}")
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try:
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args = (company,) if source_name == 'website' else (db, company.id) if source_name == 'wikipedia' else (company, search_term)
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content_text, current_source_url = content_loader(*args)
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if not content_text or len(content_text) < 100:
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logger.info(f"No or insufficient content for {source_name} (Length: {len(content_text) if content_text else 0}).")
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continue
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llm_result = self._run_llm_metric_extraction_prompt(content_text, search_term, industry_name)
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if llm_result:
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llm_result['source_url'] = current_source_url
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all_source_results.append((source_name, llm_result))
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except Exception as e:
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logger.error(f"Error in {source_name} stage: {e}")
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processed_results = []
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for source_name, llm_result in all_source_results:
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metric_value = llm_result.get("raw_value")
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metric_unit = llm_result.get("raw_unit")
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if metric_value is not None and self._is_metric_plausible(search_term, metric_value):
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standardized_value = None
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if standardization_logic and metric_value is not None:
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standardized_value = self._parse_standardization_logic(standardization_logic, metric_value)
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processed_results.append({
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"calculated_metric_name": search_term,
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"calculated_metric_value": metric_value,
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"calculated_metric_unit": metric_unit,
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"standardized_metric_value": standardized_value,
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"standardized_metric_unit": standardized_unit,
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"metric_source": source_name,
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"metric_proof_text": llm_result.get("proof_text"),
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"metric_source_url": llm_result.get("source_url"),
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"metric_confidence": 0.95,
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"metric_confidence_reason": "Value found and extracted by LLM."
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})
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else:
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logger.info(f"LLM found no plausible metric for {search_term} in {source_name}.")
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best_result = self._get_best_metric_result(processed_results)
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return best_result if best_result else final_result
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def extract_metrics_for_industry(self, company: Company, db: Session, industry: Industry) -> Company:
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if not industry or not industry.scraper_search_term:
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logger.warning(f"No metric configuration for industry '{industry.name if industry else 'None'}'")
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return company
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# Improved unit derivation
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if "m²" in (industry.standardization_logic or "") or "m²" in (industry.scraper_search_term or ""):
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std_unit = "m²"
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else:
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std_unit = "Einheiten"
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metrics = self._extract_and_calculate_metric_cascade(
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db, company, industry.name, industry.scraper_search_term, industry.standardization_logic, std_unit
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)
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company.calculated_metric_name = metrics["calculated_metric_name"]
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company.calculated_metric_value = metrics["calculated_metric_value"]
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company.calculated_metric_unit = metrics["calculated_metric_unit"]
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company.standardized_metric_value = metrics["standardized_metric_value"]
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company.standardized_metric_unit = metrics["standardized_metric_unit"]
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company.metric_source = metrics["metric_source"]
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company.metric_proof_text = metrics["metric_proof_text"]
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company.metric_source_url = metrics.get("metric_source_url")
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company.metric_confidence = metrics["metric_confidence"]
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company.metric_confidence_reason = metrics["metric_confidence_reason"]
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company.last_classification_at = datetime.utcnow()
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# REMOVED: db.commit() - This should be handled by the calling function.
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return company
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def reevaluate_wikipedia_metric(self, company: Company, db: Session, industry: Industry) -> Company:
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logger.info(f"Re-evaluating metric for {company.name}...")
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return self.extract_metrics_for_industry(company, db, industry)
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def _generate_marketing_opener(self, company_name: str, website_text: str, industry_name: str, industry_pains: str, focus_mode: str = "primary") -> Optional[str]:
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"""
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Generates the 'First Sentence' (Opener).
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focus_mode: 'primary' (Standard/Cleaning) or 'secondary' (Service/Logistics).
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"""
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if not industry_pains:
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industry_pains = "Effizienz und Personalmangel" # Fallback
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# Dynamic Focus Instruction
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if focus_mode == "secondary":
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focus_instruction = """
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- **FOKUS: SEKUNDÄR-PROZESSE (Logistik/Service/Versorgung).**
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- Ignoriere das Thema Reinigung. Konzentriere dich auf **Abläufe, Materialfluss, Entlastung von Fachkräften** oder **Gäste-Service**.
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- Der Satz muss einen operativen Entscheider (z.B. Pflegedienstleitung, Produktionsleiter) abholen."""
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else:
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focus_instruction = """
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- **FOKUS: PRIMÄR-PROZESSE (Infrastruktur/Sauberkeit/Sicherheit).**
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- Konzentriere dich auf Anforderungen an das Facility Management, Hygiene, Außenwirkung oder Arbeitssicherheit.
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- Der Satz muss einen Infrastruktur-Entscheider (z.B. FM-Leiter, Geschäftsführer) abholen."""
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prompt = f"""
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Du bist ein exzellenter B2B-Stratege und Texter.
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Deine Aufgabe ist es, einen hochpersonalisierten Einleitungssatz für eine E-Mail an ein potenzielles Kundenunternehmen zu formulieren.
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--- KONTEXT ---
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Zielunternehmen: {company_name}
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Branche: {industry_name}
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Operative Herausforderung (Pain): "{industry_pains}"
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Webseiten-Kontext:
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{website_text[:2500]}
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--- Denkprozess & Stilvorgaben ---
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1. **Analysiere den Kontext:** Verstehe das Kerngeschäft.
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2. **Identifiziere den Hebel:** Was ist der Erfolgsfaktor in Bezug auf den FOKUS?
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3. **Formuliere den Satz (ca. 20-35 Wörter):**
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- Wähle einen eleganten, aktiven Einstieg.
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- Verbinde die **Tätigkeit** mit dem **Hebel** und den **Konsequenzen**.
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- **WICHTIG:** Formuliere als positive Beobachtung über eine Kernkompetenz.
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- **VERMEIDE:** Konkrete Zahlen.
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- Verwende den Firmennamen: {company_name}.
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{focus_instruction}
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--- Deine Ausgabe ---
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Gib NUR den finalen Satz aus. Keine Anführungszeichen.
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"""
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try:
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response = call_gemini_flash(prompt)
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if response:
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return response.strip().strip('"')
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return None
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except Exception as e:
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logger.error(f"Opener Generation Error: {e}")
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return None
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def classify_company_potential(self, company: Company, db: Session) -> Company:
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logger.info(f"Starting classification for {company.name}...")
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# 1. Load Definitions
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industries = self._load_industry_definitions(db)
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industry_defs = [{"name": i.name, "description": i.description} for i in industries]
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logger.debug(f"Loaded {len(industries)} industry definitions.")
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# 2. Get Content (Website)
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website_content, _ = self._get_website_content_and_url(company)
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if not website_content or len(website_content) < 100:
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logger.warning(f"No or insufficient website content for {company.name} (Length: {len(website_content) if website_content else 0}). Skipping classification.")
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return company
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logger.debug(f"Website content length for classification: {len(website_content)}")
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# 3. Classify Industry
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logger.info(f"Running LLM classification prompt for {company.name}...")
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suggested_industry_name = self._run_llm_classification_prompt(website_content, company.name, industry_defs)
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logger.info(f"AI suggests industry: {suggested_industry_name}")
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# 4. Update Company & Generate Openers
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matched_industry = next((i for i in industries if i.name == suggested_industry_name), None)
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if matched_industry:
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company.industry_ai = matched_industry.name
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logger.info(f"Matched company to industry: {matched_industry.name}")
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# --- Generate PRIMARY Opener (Infrastructure/Cleaning) ---
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logger.info(f"Generating PRIMARY opener for {company.name}...")
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op_prim = self._generate_marketing_opener(
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company.name, website_content, matched_industry.name, matched_industry.pains, "primary"
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)
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if op_prim:
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company.ai_opener = op_prim
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logger.info(f"Opener (Primary) generated and set.")
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else:
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logger.warning(f"Failed to generate PRIMARY opener for {company.name}.")
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# --- Generate SECONDARY Opener (Service/Logistics) ---
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logger.info(f"Generating SECONDARY opener for {company.name}...")
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op_sec = self._generate_marketing_opener(
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company.name, website_content, matched_industry.name, matched_industry.pains, "secondary"
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)
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if op_sec:
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company.ai_opener_secondary = op_sec
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logger.info(f"Opener (Secondary) generated and set.")
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else:
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logger.warning(f"Failed to generate SECONDARY opener for {company.name}.")
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else:
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company.industry_ai = "Others"
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logger.warning(f"No specific industry matched for {company.name}. Set to 'Others'.")
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# 5. Extract Metrics (Cascade)
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if matched_industry:
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logger.info(f"Extracting metrics for {company.name} and industry {matched_industry.name}...")
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try:
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self.extract_metrics_for_industry(company, db, matched_industry)
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logger.info(f"Metric extraction completed for {company.name}.")
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except Exception as e:
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logger.error(f"Error during metric extraction for {company.name}: {e}", exc_info=True)
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else:
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logger.warning(f"Skipping metric extraction for {company.name} as no specific industry was matched.")
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company.last_classification_at = datetime.utcnow()
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db.commit()
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logger.info(f"Classification and enrichment for {company.name} completed and committed.")
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return company |