"""
Wallet Memory Bank API Router - /api/v1/wallet/*
===================================================
Unified wallet intelligence endpoints for both:
  - WalletSafe frontend (wallet profiles, entity explorer)
  - SENTINEL integration (deployer intelligence)
"""

import contextlib
import logging
from datetime import UTC, datetime
from typing import Any

from fastapi import APIRouter, HTTPException, Query
from pydantic import BaseModel, Field

logger = logging.getLogger("wallet_memory.router")

router = APIRouter(prefix="/api/v1/wallet", tags=["wallet-memory"])


# ── Request/Response models ────────────────────────────────────


class WalletProfileRequest(BaseModel):
    address: str
    chain: str = "solana"
    depth: int = Field(default=1, ge=1, le=5, description="Cluster exploration depth")


class DeployerIntelRequest(BaseModel):
    address: str
    chain: str = "solana"


class FlagDeployerRequest(BaseModel):
    address: str
    chain: str = "solana"
    reason: str = "high_risk_token"
    token: str = ""
    score: float = Field(default=0, ge=0, le=100)


class SearchRequest(BaseModel):
    query: str
    chain: str = ""
    limit: int = Field(default=20, ge=1, le=100)


class FeedTransactionsRequest(BaseModel):
    transactions: list[dict[str, Any]]
    chain_id: str = "solana"


class BridgeLinkRequest(BaseModel):
    source_address: str
    source_chain: str
    dest_address: str
    dest_chain: str
    bridge_name: str
    tx_hash: str
    confidence: float = Field(default=1.0, ge=0, le=1.0)


# ── Engine helper ────────────────────────────────────────────────


def _get_engine():
    from .engine import get_wallet_engine

    return get_wallet_engine()


# ── Endpoints ───────────────────────────────────────────────────


@router.get("/{address}/profile")
async def get_wallet_profile(
    address: str,
    chain: str = Query(default="solana"),
    depth: int = Query(default=1, ge=1, le=5),
):
    """
    Get full wallet profile with entity info, risk, labels, and cluster.
    This is the primary WalletSafe product endpoint.
    """
    engine = _get_engine()
    profile = await engine.get_wallet_profile(address, chain, depth)
    return profile


@router.post("/deployer-intel")
async def get_deployer_intelligence(req: DeployerIntelRequest):
    """
    Get deployer intelligence for SENTINEL token scans.
    Returns entity, labels, risk, and deployer history in one shot.
    """
    engine = _get_engine()
    intel = await engine.get_deployer_intelligence(req.address, req.chain)
    return intel


@router.post("/flag-deployer")
async def flag_deployer(req: FlagDeployerRequest):
    """
    Feed scan results back into the Wallet Memory Bank.
    This is the data flywheel: scans produce intelligence for future scans.
    """
    engine = _get_engine()
    success = await engine.flag_deployer(req.address, req.chain, req.reason, req.token, req.score)
    return {"flagged": success, "address": req.address, "chain": req.chain}


@router.post("/search")
async def search_wallets(req: SearchRequest):
    """Search wallets by address prefix, label, or entity name."""
    engine = _get_engine()
    results = await engine.search_wallets(req.query, req.chain, req.limit)
    return {"query": req.query, "results": results, "count": len(results)}


@router.get("/{address}/entity")
async def get_entity(address: str, chain: str = Query(default="solana")):
    """
    Get cross-chain entity resolution for a wallet.
    Returns linked addresses across all chains.
    """
    from .entity_resolver import get_entity_resolver

    resolver = get_entity_resolver()
    entity = await resolver.resolve(address, chain)
    return entity


@router.post("/bridge-link")
async def create_bridge_link(req: BridgeLinkRequest):
    """
    Explicitly link two wallets across chains via a bridge transaction.
    """
    from .entity_resolver import get_entity_resolver

    resolver = get_entity_resolver()
    entity_id = await resolver.link_via_bridge(
        req.source_address,
        req.source_chain,
        req.dest_address,
        req.dest_chain,
        req.bridge_name,
        req.tx_hash,
        req.confidence,
    )
    return {"entity_id": entity_id, "linked": True}


@router.post("/feed-transactions")
async def feed_transactions(req: FeedTransactionsRequest):
    """
    Feed transactions into the clustering engine.
    Used by data ingestion pipelines to build entity clusters.
    """
    engine = _get_engine()
    engine.feed_transactions(req.transactions, req.chain_id)
    stats = engine.clustering.get_stats()
    return {"fed": len(req.transactions), "engine_stats": stats}


@router.post("/persist-clusters")
async def persist_clusters():
    """Run all clustering heuristics and persist results to storage."""
    engine = _get_engine()
    persisted = await engine.persist_clusters()
    return {"persisted": persisted}


@router.get("/{address}/risk")
async def get_wallet_risk(
    address: str,
    chain: str = Query(default="solana"),
):
    """
    Get just the risk score for a wallet (fast path).
    """
    engine = _get_engine()
    intel = await engine.get_deployer_intelligence(address, chain)
    return {
        "address": address.lower(),
        "chain": chain,
        "risk_score": intel.get("risk_score", 0),
        "risk_level": intel.get("risk_level", "unknown"),
        "scam_associations": intel.get("scam_associations", []),
        "warnings": [],
    }


@router.get("/stats")
async def wallet_memory_stats():
    """Get Wallet Memory Bank statistics."""
    engine = _get_engine()
    cluster_stats = engine.clustering.get_stats()
    return {
        "storage": "clickhouse+redis" if engine.storage._ch else "redis-only",
        "clustering": cluster_stats,
        "label_sources": 9,
    }


@router.get("/health")
async def wallet_memory_health():
    """Health check for Wallet Memory Bank."""
    engine = _get_engine()
    # Force lazy connection to actually test
    with contextlib.suppress(Exception):
        await engine.storage._ensure_connections()
    storage_ok = engine.storage._redis is not None or engine.storage._ch is not None
    return {
        "status": "ok" if storage_ok else "degraded",
        "storage": {
            "redis": engine.storage._redis is not None,
            "clickhouse": engine.storage._ch is not None,
        },
        "clustering": {
            "wallets": engine.clustering.uf.total_nodes,
            "heuristics": 6,
        },
    }


@router.post("/labels/reload")
async def reload_static_labels():
    """
    Trigger a full reload of all static wallet labels.
    Re-downloads Solana CSVs if missing, reloads all etherscan CSVs and OFAC data.
    Stores to both Redis and ClickHouse via WalletStorage.
    """
    from .label_importer import is_loading, load_all_static_labels

    if is_loading():
        return {"status": "already_loading", "message": "Label import is already in progress"}
    counts = await load_all_static_labels()
    return {
        "status": "complete",
        "counts": counts,
    }


@router.get("/labels/stats")
async def label_stats():
    """
    Get current label load counts and status.
    """
    from .label_importer import get_last_load_counts, is_loading

    return {
        "loading": is_loading(),
        "last_counts": get_last_load_counts(),
    }


# ── Fast Label Lookup ───────────────────────────────────────────


@router.get("/{address}/labels")
async def get_wallet_labels(
    address: str,
    chain: str = Query(default=""),
):
    """Fast label lookup - returns all labels for an address instantly."""
    engine = _get_engine()

    # Try known chains
    chains_to_check = [chain] if chain else ["ethereum", "solana", "bitcoin", "tron"]

    labels = []
    for ch in chains_to_check:
        try:
            profile = await engine.get_wallet_profile(address, ch, depth=0)
            if profile and profile.get("labels"):
                labels.extend(profile["labels"])
        except Exception:
            continue

    # Also check threat actor database
    from app.auto_labeler import get_auto_labeler

    labeler = get_auto_labeler()

    # Check if this wallet appears in auto-labeler observations
    for ch in chains_to_check:
        key = f"{ch}:{address.lower()}"
        if key in labeler.pending_observations:
            for obs in labeler.pending_observations.get(key, []):
                if isinstance(obs, dict) and obs.get("label_key"):
                    labels.append(obs)

    return {
        "address": address,
        "chain": chain or "auto",
        "labels": labels,
        "count": len(labels),
        "queried_at": datetime.now(UTC).isoformat(),
    }


@router.post("/labels/batch")
async def batch_label_lookup(request: dict):
    """Bulk lookup - query up to 100 addresses at once."""
    addresses = request.get("addresses", [])
    chain = request.get("chain", "")

    if len(addresses) > 100:
        raise HTTPException(status_code=400, detail="Max 100 addresses per batch")

    engine = _get_engine()
    results = {}

    for addr in addresses[:100]:
        try:
            profile = await engine.get_wallet_profile(addr, chain or "ethereum", depth=0)
            results[addr] = {
                "labels": profile.get("labels", []) if profile else [],
                "risk_score": profile.get("risk_score", 0) if profile else 0,
            }
        except Exception:
            results[addr] = {"labels": [], "risk_score": 0}

    return {
        "queried": len(addresses),
        "results": results,
        "chain": chain or "auto",
    }


@router.get("/labels/freshness")
async def label_freshness_stats():
    """Check how fresh our labels are - when were they last verified."""
    import os

    clean_dir = os.path.join(os.environ.get("RMI_DATA_DIR", "/app/data"), "wallet-labels-clean")
    manifest_path = os.path.join(clean_dir, "manifest.json")

    freshness = {
        "clean_data_generated": None,
        "age_hours": None,
        "status": "unknown",
        "files": {},
    }

    if os.path.exists(manifest_path):
        import json

        with open(manifest_path) as f:
            manifest = json.load(f)
        generated = manifest.get("generated_at")
        if generated:
            gen_time = datetime.fromisoformat(generated).replace(tzinfo=UTC)
            age = (datetime.now(UTC) - gen_time).total_seconds() / 3600
            freshness["clean_data_generated"] = generated
            freshness["age_hours"] = round(age, 1)
            freshness["status"] = "fresh" if age < 24 else "stale" if age < 72 else "critical"

    # Check individual files
    for fname in [
        "wallet_labels_ethereum.csv",
        "wallet_labels_solana.csv",
        "wallet_labels_threat_actors.csv",
    ]:
        fpath = os.path.join(clean_dir, fname)
        if os.path.exists(fpath):
            mtime = datetime.fromtimestamp(os.path.getmtime(fpath), tz=UTC)
            freshness["files"][fname] = {
                "size_kb": round(os.path.getsize(fpath) / 1024, 1),
                "last_modified": mtime.isoformat(),
                "age_hours": round((datetime.now(UTC) - mtime).total_seconds() / 3600, 1),
            }

    return freshness