"""Replicate / Gemini integration — deep site assessment."""
import asyncio
import json
import logging
import os
import re
from typing import Optional

import httpx
from bs4 import BeautifulSoup

logger = logging.getLogger(__name__)

REPLICATE_TOKEN = os.getenv("REPLICATE_API_TOKEN", "r8_7I7Feai78f9PzMOs20y5GVFKiLkgUWP463vZO")  # override via env
REPLICATE_MODEL = "https://api.replicate.com/v1/models/google/gemini-3-pro/predictions"
AI_CONCURRENCY  = int(os.getenv("AI_CONCURRENCY", "3"))

_ai_sem: Optional[asyncio.Semaphore] = None


def _sem() -> asyncio.Semaphore:
    global _ai_sem
    if _ai_sem is None:
        _ai_sem = asyncio.Semaphore(AI_CONCURRENCY)
    return _ai_sem


async def _ddg_search(query: str) -> str:
    """DuckDuckGo HTML search — returns top snippet text, empty string on failure."""
    try:
        async with httpx.AsyncClient(
            timeout=10, follow_redirects=True,
            headers={"User-Agent": "Mozilla/5.0 (compatible; DomGod/1.0)"},
        ) as client:
            r = await client.get(
                "https://html.duckduckgo.com/html/",
                params={"q": query, "kl": "es-es"},
            )
            if r.status_code != 200:
                return ""
            soup = BeautifulSoup(r.text, "html.parser")
            parts = []
            for res in soup.select(".result")[:4]:
                title = res.select_one(".result__a")
                snip  = res.select_one(".result__snippet")
                url   = res.select_one(".result__url")
                if snip:
                    t = title.get_text(strip=True) if title else ""
                    u = url.get_text(strip=True)   if url   else ""
                    parts.append(f"[{u}] {t} — {snip.get_text(strip=True)}")
            return "\n".join(parts)
    except Exception as e:
        logger.debug("DDG search failed: %s", e)
        return ""


def _build_prompt(a: dict, search_results: str = "", language: str = "ES") -> str:
    contacts_block = []
    if a.get("emails"):      contacts_block.append(f"  Emails:    {', '.join(a['emails'][:3])}")
    if a.get("phones"):      contacts_block.append(f"  Phones:    {', '.join(a['phones'][:3])}")
    if a.get("whatsapp"):    contacts_block.append(f"  WhatsApp:  {', '.join(a['whatsapp'][:2])}")
    if a.get("social_links"):contacts_block.append(f"  Social:    {', '.join(a['social_links'][:4])}")
    contacts_str = "\n".join(contacts_block) or "  None found"

    kd_str      = "\n".join(f"  - {s}" for s in (a.get("kit_digital_signals") or [])) or "  None"
    analytics   = ", ".join(a.get("analytics_present") or []) or "none"
    webmaster   = ", ".join(a.get("webmaster_verified") or []) or "none"
    lorem_str   = ", ".join(a.get("lorem_matches") or []) or "none"
    ph_str      = ", ".join(a.get("placeholder_matches") or []) or "none"
    snippet     = (a.get("visible_text_snippet") or "")[:800]
    social_str  = ", ".join(a.get("social_links") or []) or "none detected"
    gmb_str     = f"✅ Found — {a.get('gmb_url','')}" if a.get("has_gmb") else "❌ Not detected"
    copyright_yr = a.get("copyright_year") or "not found"
    last_mod    = a.get("last_modified") or "not found"

    eu_hosted   = a.get("eu_hosted")
    hosting_flag = "✅ EU" if eu_hosted else ("❌ Non-EU" if eu_hosted is False else "unknown")

    return f"""You are a senior web consultant and IT sales analyst evaluating a Spanish/European SME website for IT services upsell.

=== TECHNICAL ===
Domain:          {a.get("domain")}
Reachable:       {a.get("reachable")}  |  Status: {a.get("status_code")}  |  Load time: {a.get("load_time_ms")} ms
Page size:       {a.get("page_size_kb")} KB  |  Server: {a.get("server")}  |  CMS: {a.get("cms") or "unknown"}
SSL:             valid={a.get("ssl_valid")}  expires_in={a.get("ssl_expiry_days")} days
Mobile:          viewport={a.get("has_mobile_viewport")}
Words: {a.get("word_count")}  |  Images: {a.get("image_count")}  |  Scripts: {a.get("script_count")}

=== HOSTING & INFRASTRUCTURE ===
IP:              {a.get("ip") or "unknown"}
ASN:             {a.get("asn") or "unknown"}
Organisation:    {a.get("org") or "unknown"}
ISP:             {a.get("isp") or "unknown"}
Host country:    {a.get("ip_country") or "unknown"} / {a.get("ip_region") or ""}
EU hosted:       {hosting_flag}

=== SEO & INDEXING ===
Title:           {a.get("page_title") or "MISSING"}
H1:              {a.get("h1_text") or "MISSING"}
Meta desc:       {a.get("meta_description") or "MISSING"}
Canonical:       {a.get("canonical_url") or "not set"}
Sitemap:         {a.get("has_sitemap")}  |  Robots: {a.get("has_robots")}  |  Blocks Google: {a.get("robots_disallows_google")}
Analytics:       {analytics}
Webmaster:       {webmaster}

=== GDPR & LEGAL COMPLIANCE ===
Cookie tool:     {a.get("cookie_tool") or "none detected"}
Cookie notice:   {a.get("has_cookie_notice")}
Privacy policy:  {a.get("has_privacy_policy")}
GDPR text:       {a.get("has_gdpr_text")}

=== ACCESSIBILITY (quick scan) ===
HTML lang attr:        {a.get("html_lang") or "MISSING"}
Images missing alt:    {a.get("images_missing_alt")}
Skip navigation link:  {a.get("has_skip_nav")}
Empty links:           {a.get("empty_links")}
Inputs without labels: {a.get("inputs_without_labels")}

=== CONTENT QUALITY & FRESHNESS ===
Lorem ipsum:     {a.get("has_lorem_ipsum")}  →  {lorem_str}
Placeholder:     {a.get("has_placeholder")}  →  {ph_str}
Copyright year:  {copyright_yr}
Last-Modified:   {last_mod}

=== KIT DIGITAL (Spanish gov €12k SME grants — ONLY confirm if you see explicit Kit Digital / agente digitalizador branding) ===
Heuristic detected: {a.get("kit_digital")}
{kd_str}

=== GOOGLE MY BUSINESS ===
GMB/Business Profile: {gmb_str}

=== SOCIAL MEDIA ===
Profiles found on site: {social_str}

=== CONTACT CHANNELS ===
{contacts_str}

=== PAGE TEXT SAMPLE ===
{snippet}

=== WEB SEARCH RESULTS (use to find contacts, verify business identity) ===
{(search_results or "No results.")[:600]}

=== OUTPUT LANGUAGE ===
Write pitch_angle, outreach_email, email_subject, and all human-readable text fields in: {language}
(EN = English | ES = Spanish | RO = Romanian)

=== WHO WE ARE ===
We are a full-service digital agency. We handle EVERYTHING web-related for SMEs:
new website builds, redesigns, landing pages, e-commerce, CMS migrations, speed
optimisation, mobile responsiveness, SSL/security, SEO (on-page + technical +
local), Google Ads, Google My Business setup & optimisation, social media
management (Instagram, Facebook, LinkedIn, TikTok), GDPR compliance, cookie
banners, accessibility fixes, hosting migrations, email setup, maintenance
contracts, and AI-powered tools. No job is too small or too large.

=== ASSESSMENT RULES ===
Look at EVERY aspect of the site — quality, age, CMS, performance, SEO, GDPR,
social presence, GMB, contacts, hosting — and identify ALL the problems AND
opportunities. Then build the pitch around the most compelling angle for THIS
specific business.

Lead scoring guide:
• HOT  — blank/placeholder site, or ≥3 serious issues (expired SSL, no SEO,
         no mobile, lorem ipsum, non-EU hosting, no GDPR, no social, site >3 yrs old)
• WARM — functional but clearly outdated or missing 1-2 key services
• COLD — modern, well-maintained site with few obvious gaps

MANDATORY for EVERY assessment — no exceptions:
1. pitch_angle: A single, compelling cold-outreach sentence in Spanish, personalised
   to this specific business name/type and its biggest weakness. Reference the actual
   problem. Examples of good pitches:
   - "Hola Salom Manacor, su web lleva sin actualizarse desde 2019 — en 3 semanas
     le entregamos una nueva web con ficha en Google, redes sociales y posicionamiento
     incluidos."
   - "Detectamos que la web de [Negocio] no aparece en Google Maps ni tiene perfil
     en Instagram — podemos solucionarlo esta semana."
   - "Su certificado SSL vence en 12 días y su web no tiene aviso de cookies legal —
     evite multas y pérdida de visitas con nuestro plan de mantenimiento."
2. outreach_email: A 3-4 sentence ready-to-send email in Spanish. First sentence
   names the business and the most urgent problem. Second sentence explains the
   impact (losing clients, Google ranking, legal risk). Third sentence introduces us
   as the solution. Close with a call to action (llamada de 15 min, presupuesto
   gratuito). Sign off: "Un saludo, [Agencia Digital]".
3. email_subject: A short, specific Spanish email subject line referencing the
   business name and main issue (e.g. "Web de Salom Manacor — propuesta de mejora").
4. services_needed: At least 2 specific services from our catalogue.
5. Use WEB SEARCH RESULTS to find real phone/email for best_contact_value.
6. Use copyright_year + Last-Modified to estimate site_last_updated.
7. Keep all string values concise (≤ 20 words each). Arrays: max 4 items.

Respond ONLY with valid JSON, no markdown fences, no text outside the JSON:
{{
  "lead_quality": "HOT|WARM|COLD",
  "lead_reasoning": "1-2 sentences",
  "pitch_angle": "1 punchy sentence in Spanish referencing the specific business problem",
  "outreach_email": "ready-to-send 3-4 sentence email in Spanish",
  "email_subject": "specific Spanish subject line",
  "services_needed": ["service1","service2"],
  "best_contact_channel": "email|phone|whatsapp|social|web_form|unknown",
  "best_contact_value": "real email/phone from page or search results",
  "all_contacts": {{"emails":[],"phones":[],"whatsapp":[],"social":[]}},
  "summary": "2-3 sentence executive summary",
  "site_quality_score": <0-10>,
  "cms_detected": "wordpress|wix|custom|unknown",
  "site_last_updated": "year or estimate",
  "kit_digital_confirmed": true/false,
  "kit_digital_reasoning": "1 sentence",
  "has_gmb": true/false,
  "has_social_media": true/false,
  "is_local_sme": true/false,
  "urgency_signals": ["issue1","issue2"],
  "content_issues": ["issue1"],
  "accessibility_issues": ["issue1"],
  "performance_notes": "brief",
  "seo_status": "brief",
  "hosting_notes": "brief",
  "gdpr_compliance": "brief",
  "outreach_notes": "sales rep context"
}}"""


def _parse_output(raw: str) -> dict:
    text = re.sub(r"```(?:json)?", "", raw).strip().rstrip("`").strip()
    m = re.search(r"\{[\s\S]+\}", text)
    if m:
        candidate = m.group(0)
        try:
            return json.loads(candidate)
        except json.JSONDecodeError:
            # Truncated JSON: close any open arrays/objects and retry
            fixed = candidate
            # Count unclosed brackets
            depth_obj = fixed.count("{") - fixed.count("}")
            depth_arr = fixed.count("[") - fixed.count("]")
            # Strip trailing incomplete key-value (e.g. `,"foo": "bar` with no closing `"`)
            fixed = re.sub(r',\s*"[^"]*"?\s*:\s*[^,\}\]]*$', '', fixed)
            fixed += "]" * max(0, depth_arr) + "}" * max(0, depth_obj)
            try:
                return json.loads(fixed)
            except json.JSONDecodeError:
                pass
    logger.warning("Could not parse Gemini JSON output, raw: %s", raw[:300])
    return {
        "summary": raw[:400] if raw.strip() else "AI assessment failed — no output.",
        "lead_quality": "COLD",
        "best_contact_channel": "unknown",
        "best_contact_value": "",
        "parse_error": True,
    }


async def assess_domain(analysis: dict, language: str = "ES") -> dict:
    """Call Gemini with the full site analysis. Returns parsed assessment."""
    async with _sem():
        # Build search query from domain / page title for contact lookup
        domain = analysis.get("domain", "")
        title  = analysis.get("page_title") or ""
        biz_name = title.split("|")[0].split("-")[0].strip() or domain
        search_query = f'"{biz_name}" {domain} contacto telefono email'
        search_results = await _ddg_search(search_query)
        logger.info("DDG search for %s → %d chars", domain, len(search_results))

        payload = {
            "input": {
                "prompt": _build_prompt(analysis, search_results, language),
                "images":  [],
                "videos":  [],
                "top_p":   0.9,
                "temperature": 0.2,
                "thinking_level": "low",
                "max_output_tokens": 6000,
            }
        }
        try:
            async with httpx.AsyncClient(timeout=120) as client:
                resp = await client.post(
                    REPLICATE_MODEL,
                    headers={
                        "Authorization": f"Bearer {REPLICATE_TOKEN}",
                        "Content-Type":  "application/json",
                        "Prefer":        "wait",
                    },
                    json=payload,
                )
                resp.raise_for_status()
                data = resp.json()

            output = data.get("output", "")
            if isinstance(output, list):
                output = "".join(output)

            result = _parse_output(output)
            logger.info("AI %s → %s (quality %s)",
                        analysis.get("domain"), result.get("lead_quality"), result.get("site_quality_score"))
            return result

        except Exception as e:
            logger.error("Replicate error %s: %s", analysis.get("domain"), e)
            return {
                "error":               str(e)[:300],
                "lead_quality":        "COLD",
                "best_contact_channel": "unknown",
                "best_contact_value":  "",
            }