#!/usr/bin/env python3
"""
AI-powered matching of Norda companies to ZOPK projects.

Uses Gemini AI to analyze each company's profile and determine
which ZOPK projects are relevant, with relevance scores and
collaboration descriptions.

Usage:
    python3 scripts/match_companies_zopk.py [--dry-run] [--limit N] [--company-id ID]
"""
import sys
import os
import json
import time
import logging
import argparse

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from dotenv import load_dotenv
load_dotenv()

from database import (
    SessionLocal, Company, ZOPKProject, ZOPKCompanyLink
)
from sqlalchemy import func

logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)


MATCHING_PROMPT = """Jesteś ekspertem ds. łańcuchów dostaw i współpracy biznesowej w regionie Pomorza.

Przeanalizuj profil firmy i oceń, czy może być powiązana z projektami Zielonego Okręgu Przemysłowego Kaszubia.

FIRMA:
Nazwa: {company_name}
Kategoria: {category}
Kody PKD: {pkd_codes}
Opis: {description}
Usługi: {services}
Branża: {industry}
Tagi: {tags}

PROJEKTY ZOPK:
{projects_text}

Dla KAŻDEGO projektu oceń:
1. Czy firma może być dostawcą, partnerem lub beneficjentem tego projektu?
2. Jeśli tak — jaki typ powiązania (potential_supplier, partner, beneficiary)?
3. Ocena trafności 0-100 (0 = brak powiązania, 100 = idealny dostawca/partner)
4. Krótki opis (1-2 zdania po polsku) DLACZEGO ta firma jest istotna dla tego projektu — co konkretnie może wnieść?

Zwróć JSON:
{{
  "matches": [
    {{
      "project_id": 1,
      "relevant": true,
      "link_type": "potential_supplier",
      "relevance_score": 75,
      "description": "Firma specjalizuje się w spawaniu aluminium, co jest kluczowe przy konstrukcji platform offshore."
    }}
  ]
}}

WAŻNE:
- Zwróć wpisy TYLKO dla projektów z relevance_score >= 25
- Bądź realistyczny — nie przypisuj firm do projektów bez uzasadnienia
- Oceń na podstawie KONKRETNYCH kompetencji firmy, nie ogólnych kategorii
- Opis musi być konkretny — co firma MOŻE WNIEŚĆ do projektu
- Odpowiadaj TYLKO JSON-em, bez dodatkowego tekstu"""


def gather_company_signals(company, db):
    """Gather all available signals for a company."""
    # Basic info
    category = ''
    if company.category:
        category = company.category.name

    # PKD codes
    pkd_codes = []
    if company.pkd_code:
        desc = company.pkd_description or ''
        pkd_codes.append(f"{company.pkd_code} ({desc})")
    if company.ceidg_pkd_list:
        try:
            pkd_list = company.ceidg_pkd_list if isinstance(company.ceidg_pkd_list, list) else json.loads(company.ceidg_pkd_list)
            for p in pkd_list[:5]:
                if isinstance(p, dict):
                    pkd_codes.append(f"{p.get('code', '')} ({p.get('name', '')})")
                elif isinstance(p, str) and p not in [c.split(' ')[0] for c in pkd_codes]:
                    pkd_codes.append(p)
        except (json.JSONDecodeError, TypeError):
            pass

    # Description
    desc_parts = []
    if company.description_short:
        desc_parts.append(company.description_short)
    if company.description_full and len(company.description_full) > len(company.description_short or ''):
        desc_parts.append(company.description_full[:500])
    description = ' '.join(desc_parts)[:800] or 'Brak opisu'

    # Services
    services_list = []
    if company.services_offered:
        services_list.append(company.services_offered[:300])
    # Linked services
    if hasattr(company, 'services') and company.services:
        for cs in company.services[:10]:
            if hasattr(cs, 'service') and cs.service:
                services_list.append(cs.service.name)
            elif hasattr(cs, 'name'):
                services_list.append(cs.name)
    services = ', '.join(services_list)[:500] or 'Brak informacji'

    # AI insights
    industry = company.industry_sector or ''
    tags = ''
    if company.ai_insights:
        try:
            insights = company.ai_insights if isinstance(company.ai_insights, dict) else json.loads(company.ai_insights)
            if insights.get('industry_tags'):
                tags = ', '.join(insights['industry_tags'][:8])
            if insights.get('services_list') and not services_list:
                services = ', '.join(insights['services_list'][:8])
        except (json.JSONDecodeError, TypeError):
            pass

    return {
        'company_name': company.name,
        'category': category,
        'pkd_codes': '; '.join(pkd_codes) or 'Brak',
        'description': description,
        'services': services,
        'industry': industry or 'Brak',
        'tags': tags or 'Brak',
    }


def format_projects(projects):
    """Format ZOPK projects for the prompt."""
    lines = []
    for p in projects:
        lines.append(f"ID: {p.id} | Nazwa: {p.name} | Typ: {p.project_type or 'brak'} | Status: {p.status}")
        if p.description:
            lines.append(f"  Opis: {p.description[:300]}")
        lines.append('')
    return '\n'.join(lines)


def match_company(company, projects, gemini_service, db, dry_run=False):
    """Match a single company to ZOPK projects using Gemini AI."""
    signals = gather_company_signals(company, db)
    projects_text = format_projects(projects)

    prompt = MATCHING_PROMPT.format(
        projects_text=projects_text,
        **signals
    )

    try:
        response_text = gemini_service.generate_text(
            prompt=prompt,
            temperature=0.3,
            feature='zopk_company_matching',
            company_id=company.id,
            model='3-flash',  # Gemini 3 Flash thinking mode — najlepszy dostępny
        )

        if not response_text:
            logger.warning(f"  Empty response for {company.name}")
            return []

        # Parse JSON from response
        text = response_text.strip()
        # Remove markdown code blocks if present
        if text.startswith('```'):
            text = text.split('\n', 1)[1] if '\n' in text else text[3:]
            if text.endswith('```'):
                text = text[:-3]
            if text.startswith('json'):
                text = text[4:]
            text = text.strip()

        data = json.loads(text)
        matches = data.get('matches', [])

        saved = 0
        for match in matches:
            if not match.get('relevant', False):
                continue
            score = match.get('relevance_score', 0)
            if score < 25:
                continue

            project_id = match.get('project_id')
            link_type = match.get('link_type', 'potential_supplier')
            description = match.get('description', '')

            # Validate
            valid_types = ['potential_supplier', 'partner', 'investor', 'beneficiary']
            if link_type not in valid_types:
                link_type = 'potential_supplier'

            logger.info(f"  → Projekt {project_id}: {link_type} (score: {score}) — {description[:80]}")

            if not dry_run:
                # Check if already exists
                existing = db.query(ZOPKCompanyLink).filter(
                    ZOPKCompanyLink.company_id == company.id,
                    ZOPKCompanyLink.project_id == project_id,
                    ZOPKCompanyLink.link_type == link_type
                ).first()

                if existing:
                    existing.relevance_score = score
                    existing.collaboration_description = description
                    existing.status = 'suggested'
                else:
                    link = ZOPKCompanyLink(
                        company_id=company.id,
                        project_id=project_id,
                        link_type=link_type,
                        relevance_score=score,
                        collaboration_description=description,
                        status='suggested'
                    )
                    db.add(link)
                saved += 1

        if not dry_run and saved > 0:
            db.commit()
        return matches

    except json.JSONDecodeError as e:
        logger.error(f"  JSON parse error for {company.name}: {e}")
        logger.debug(f"  Response: {text[:200] if text else 'None'}")
        return []
    except Exception as e:
        logger.error(f"  Error matching {company.name}: {e}")
        return []


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('--dry-run', action='store_true')
    parser.add_argument('--limit', type=int, default=150)
    parser.add_argument('--company-id', type=int, help='Match single company by ID')
    args = parser.parse_args()

    # Initialize Gemini
    from gemini_service import init_gemini_service, get_gemini_service
    init_gemini_service(model='3-flash')
    gemini = get_gemini_service()
    if not gemini:
        logger.error("Failed to initialize Gemini service")
        sys.exit(1)

    db = SessionLocal()
    try:
        # Get ZOPK projects
        projects = db.query(ZOPKProject).filter(
            ZOPKProject.is_active.isnot(False)
        ).order_by(ZOPKProject.id).all()
        logger.info(f"Loaded {len(projects)} ZOPK projects")

        # Get companies
        query = db.query(Company).filter(
            Company.status == 'active'
        )
        if args.company_id:
            query = query.filter(Company.id == args.company_id)

        companies = query.order_by(Company.name).limit(args.limit).all()
        logger.info(f"Matching {len(companies)} companies to ZOPK projects")

        total_matches = 0
        for i, company in enumerate(companies, 1):
            logger.info(f"[{i}/{len(companies)}] {company.name}")
            matches = match_company(company, projects, gemini, db, dry_run=args.dry_run)
            relevant = [m for m in matches if m.get('relevant') and m.get('relevance_score', 0) >= 25]
            total_matches += len(relevant)

            # Rate limiting — Gemini free tier
            time.sleep(2)

        logger.info(f"\nDone! Total matches: {total_matches}")
        if args.dry_run:
            logger.info("DRY RUN — no changes saved")

    finally:
        db.close()


if __name__ == '__main__':
    main()