"""
In-Memory MCP Services for Hugging Face Spaces
These services run in-memory without requiring separate server processes
"""
import json
import asyncio
from typing import Dict, List, Optional, Any
from pathlib import Path
from datetime import datetime
from services.web_search import get_search_service
import logging

logger = logging.getLogger(__name__)


class InMemoryStoreService:
    """In-memory store service (replaces store_server.py for HF Spaces)"""

    def __init__(self, data_dir: Optional[Path] = None):
        self.data_dir = data_dir or Path(__file__).parent.parent / "data"
        self.data_dir.mkdir(exist_ok=True)

        # In-memory storage
        self.prospects = []
        self.companies = []
        self.facts = []
        self.contacts = []
        self.handoffs = []
        self.suppressions = []

        # Lock for thread safety
        self.lock = asyncio.Lock()

        # Load initial data
        self._load_data()

    def _load_data(self):
        """Load data from JSON files"""
        try:
            # Load prospects
            prospects_file = self.data_dir / "prospects.json"
            if prospects_file.exists():
                with open(prospects_file) as f:
                    content = json.load(f)
                    self.prospects = content if content else []

            # Load companies
            companies_file = self.data_dir / "companies_store.json"
            if companies_file.exists():
                with open(companies_file) as f:
                    content = json.load(f)
                    self.companies = content if content else []

            # Load facts
            facts_file = self.data_dir / "facts.json"
            if facts_file.exists():
                with open(facts_file) as f:
                    content = json.load(f)
                    self.facts = content if content else []

            # Load contacts
            contacts_file = self.data_dir / "contacts.json"
            if contacts_file.exists():
                with open(contacts_file) as f:
                    content = json.load(f)
                    self.contacts = content if content else []

            # Load handoffs
            handoffs_file = self.data_dir / "handoffs.json"
            if handoffs_file.exists():
                with open(handoffs_file) as f:
                    content = json.load(f)
                    self.handoffs = content if content else []

            # Load suppressions
            supp_file = self.data_dir / "suppression.json"
            if supp_file.exists():
                with open(supp_file) as f:
                    content = json.load(f)
                    self.suppressions = content if content else []

            logger.info("In-memory store loaded successfully")

        except Exception as e:
            logger.error(f"Error loading store data: {e}")

    async def save_prospect(self, prospect: Dict) -> str:
        """Save or update a prospect (prevents duplicates by domain)"""
        async with self.lock:
            # Check for duplicate by ID first
            found = False
            for i, p in enumerate(self.prospects):
                if p["id"] == prospect["id"]:
                    self.prospects[i] = prospect
                    found = True
                    break

            # If not found by ID, check for duplicate by domain
            if not found:
                company = prospect.get("company", {})
                domain = company.get("domain", "")

                if domain:
                    for existing in self.prospects:
                        existing_domain = existing.get("company", {}).get("domain", "")
                        if existing_domain and existing_domain.lower() == domain.lower():
                            logger.warning(f"Duplicate prospect detected for domain: {domain}. Updating existing prospect.")
                            # Update the existing prospect instead of creating duplicate
                            for i, p in enumerate(self.prospects):
                                if p.get("company", {}).get("domain", "").lower() == domain.lower():
                                    self.prospects[i] = prospect
                                    found = True
                                    break
                            break

                if not found:
                    self.prospects.append(prospect)

            return "saved"

    async def get_prospect(self, prospect_id: str) -> Optional[Dict]:
        """Get a prospect by ID"""
        for p in self.prospects:
            if p["id"] == prospect_id:
                return p
        return None

    async def list_prospects(self) -> List[Dict]:
        """List all prospects"""
        return self.prospects

    async def save_company(self, company: Dict) -> str:
        """Save or update a company"""
        async with self.lock:
            found = False
            for i, c in enumerate(self.companies):
                if c["id"] == company["id"]:
                    self.companies[i] = company
                    found = True
                    break
            if not found:
                self.companies.append(company)

            return "saved"

    async def get_company(self, company_id: str) -> Optional[Dict]:
        """Get a company by ID"""
        # Check in-memory
        for c in self.companies:
            if c["id"] == company_id:
                return c

        # Check seed file
        seed_file = self.data_dir / "companies.json"
        if seed_file.exists():
            with open(seed_file) as f:
                seeds = json.load(f)
            for c in seeds:
                if c["id"] == company_id:
                    return c

        return None

    async def save_fact(self, fact: Dict) -> str:
        """Save a fact"""
        async with self.lock:
            existing_ids = {f.get("id") for f in self.facts if f.get("id")}
            if fact.get("id") not in existing_ids:
                self.facts.append(fact)

            return "saved"

    async def save_contact(self, contact: Dict) -> str:
        """Save a contact (prevents duplicates by email)"""
        async with self.lock:
            # Check for duplicate by ID first
            found = False
            for i, c in enumerate(self.contacts):
                if c.get("id") == contact.get("id"):
                    self.contacts[i] = contact
                    found = True
                    break

            # If not found by ID, check for duplicate by email
            if not found:
                email = contact.get("email", "").lower()

                if email:
                    for existing in self.contacts:
                        existing_email = existing.get("email", "").lower()
                        if existing_email and existing_email == email:
                            logger.warning(f"Duplicate contact detected for email: {email}. Skipping.")
                            # Don't add duplicate, return existing
                            return "duplicate_skipped"

                # Not a duplicate, add it
                self.contacts.append(contact)

            return "saved"

    async def list_contacts_by_domain(self, domain: str) -> List[Dict]:
        """List contacts by domain"""
        results = []
        for c in self.contacts:
            if isinstance(c, dict) and "email" in c:
                email = c["email"]
                if email.endswith(f"@{domain}"):
                    results.append(c)

        return results

    async def check_suppression(self, supp_type: str, value: str) -> bool:
        """Check if an email/domain is suppressed"""
        for supp in self.suppressions:
            if isinstance(supp, dict):
                if supp.get("type") == supp_type and supp.get("value") == value:
                    # Check expiry
                    if supp.get("expires_at"):
                        try:
                            expires = datetime.fromisoformat(supp["expires_at"].replace("Z", "+00:00"))
                            if expires < datetime.utcnow():
                                continue
                        except:
                            pass
                    return True

        return False

    async def save_handoff(self, packet: Dict) -> str:
        """Save a handoff packet"""
        async with self.lock:
            self.handoffs.append(packet)
            return "saved"

    async def clear_all(self) -> str:
        """Clear all data"""
        async with self.lock:
            self.prospects = []
            self.companies = []
            self.facts = []
            self.contacts = []
            self.handoffs = []

            return "cleared"


class InMemorySearchService:
    """In-memory search service using web search"""

    def __init__(self):
        self.search = get_search_service()
        logger.info("In-memory search service initialized")

    async def query(self, q: str, max_results: int = 5) -> List[Dict]:
        """Perform search query"""
        if not q:
            return []

        logger.info(f"In-memory search query: '{q}'")

        # Perform real web search
        search_results = await self.search.search(q, max_results=max_results)

        # Format results for MCP protocol (with backward compatibility)
        results = []
        for result in search_results:
            body_text = result.get('body', '')
            results.append({
                "text": body_text,  # MCP protocol format
                "body": body_text,  # Backward compatibility with WebSearchService
                "title": result.get('title', ''),
                "source": result.get('source', ''),
                "url": result.get('url', ''),
                "ts": datetime.utcnow().isoformat(),
                "confidence": 0.8
            })

        logger.info(f"Returning {len(results)} search results")
        return results


class InMemoryEmailService:
    """In-memory email service (mock for Gradio demo)"""

    def __init__(self):
        self.threads = {}
        self.messages = []
        logger.info("In-memory email service initialized")

    async def send(self, to: str, subject: str, body: str, prospect_id: str) -> str:
        """Send an email (simulated)"""
        thread_id = f"thread_{prospect_id}_{datetime.utcnow().timestamp()}"

        # Create thread
        self.threads[prospect_id] = {
            "id": thread_id,
            "prospect_id": prospect_id,
            "messages": []
        }

        # Create message
        message = {
            "id": f"msg_{len(self.messages)}",
            "thread_id": thread_id,
            "prospect_id": prospect_id,
            "direction": "outbound",
            "subject": subject,
            "body": body,
            "sent_at": datetime.utcnow().isoformat()
        }

        self.threads[prospect_id]["messages"].append(message)
        self.messages.append(message)

        logger.info(f"Simulated email sent to {to}")
        return thread_id

    async def get_thread(self, prospect_id: str) -> Optional[Dict]:
        """Get email thread for a prospect"""
        return self.threads.get(prospect_id)


class InMemoryCalendarService:
    """In-memory calendar service (mock for Gradio demo)"""

    def __init__(self):
        logger.info("In-memory calendar service initialized")

    async def suggest_slots(self) -> List[Dict[str, str]]:
        """Suggest calendar slots"""
        # Return mock slots with correct key names
        from datetime import datetime, timedelta

        base_date = datetime.now() + timedelta(days=1)

        return [
            {
                "start_iso": (base_date.replace(hour=10, minute=0, second=0)).isoformat(),
                "end_iso": (base_date.replace(hour=11, minute=0, second=0)).isoformat(),
                "title": "Initial consultation"
            },
            {
                "start_iso": (base_date + timedelta(days=1)).replace(hour=14, minute=0, second=0).isoformat(),
                "end_iso": (base_date + timedelta(days=1)).replace(hour=15, minute=0, second=0).isoformat(),
                "title": "Product demo"
            },
            {
                "start_iso": (base_date + timedelta(days=2)).replace(hour=9, minute=0, second=0).isoformat(),
                "end_iso": (base_date + timedelta(days=2)).replace(hour=10, minute=0, second=0).isoformat(),
                "title": "Follow-up discussion"
            }
        ]

    async def generate_ics(self, slot: Dict) -> str:
        """Generate ICS calendar file"""
        # Mock ICS generation
        return f"BEGIN:VCALENDAR\nVERSION:2.0\nEND:VCALENDAR"


# Singleton instances
_store_service: Optional[InMemoryStoreService] = None
_search_service: Optional[InMemorySearchService] = None
_email_service: Optional[InMemoryEmailService] = None
_calendar_service: Optional[InMemoryCalendarService] = None


def get_in_memory_store() -> InMemoryStoreService:
    """Get or create in-memory store service"""
    global _store_service
    if _store_service is None:
        _store_service = InMemoryStoreService()
    return _store_service


def get_in_memory_search() -> InMemorySearchService:
    """Get or create in-memory search service"""
    global _search_service
    if _search_service is None:
        _search_service = InMemorySearchService()
    return _search_service


def get_in_memory_email() -> InMemoryEmailService:
    """Get or create in-memory email service"""
    global _email_service
    if _email_service is None:
        _email_service = InMemoryEmailService()
    return _email_service


def get_in_memory_calendar() -> InMemoryCalendarService:
    """Get or create in-memory calendar service"""
    global _calendar_service
    if _calendar_service is None:
        _calendar_service = InMemoryCalendarService()
    return _calendar_service