"""
Tests for AnalyticsStore - tenant-level analytics logging
"""

import sys
from pathlib import Path

# Add backend directory to Python path
backend_dir = Path(__file__).parent.parent
sys.path.insert(0, str(backend_dir))

import pytest
import time
import tempfile
import os

from api.storage.analytics_store import AnalyticsStore


@pytest.fixture
def temp_analytics_db():
    """Create a temporary database for testing."""
    with tempfile.NamedTemporaryFile(delete=False, suffix='.db') as f:
        db_path = f.name
    yield db_path
    # Cleanup - close any connections first
    try:
        if os.path.exists(db_path):
            # On Windows, we need to ensure the file is closed
            import time
            time.sleep(0.1)  # Brief delay to ensure file is released
            os.unlink(db_path)
    except (PermissionError, OSError):
        # File might still be in use, that's okay for temp files
        pass


@pytest.fixture
def analytics_store(temp_analytics_db):
    """Create an AnalyticsStore instance with temporary database."""
    return AnalyticsStore(db_path=temp_analytics_db)


def test_analytics_store_init(analytics_store):
    """Test that AnalyticsStore initializes correctly."""
    assert analytics_store is not None
    assert analytics_store.db_path.exists()


def test_log_tool_usage(analytics_store):
    """Test logging tool usage events."""
    analytics_store.log_tool_usage(
        tenant_id="test_tenant",
        tool_name="rag",
        latency_ms=150,
        tokens_used=500,
        success=True,
        user_id="user123"
    )
    
    stats = analytics_store.get_tool_usage_stats("test_tenant")
    assert "rag" in stats
    assert stats["rag"]["count"] == 1
    assert stats["rag"]["avg_latency_ms"] == 150.0
    assert stats["rag"]["total_tokens"] == 500


def test_log_redflag_violation(analytics_store):
    """Test logging red-flag violations."""
    analytics_store.log_redflag_violation(
        tenant_id="test_tenant",
        rule_id="rule123",
        rule_pattern=".*password.*",
        severity="high",
        matched_text="password123",
        confidence=0.95,
        message_preview="User entered password123",
        user_id="user123"
    )
    
    violations = analytics_store.get_redflag_violations("test_tenant", limit=10)
    assert len(violations) == 1
    assert violations[0]["severity"] == "high"
    assert violations[0]["confidence"] == 0.95
    assert violations[0]["matched_text"] == "password123"


def test_log_rag_search(analytics_store):
    """Test logging RAG search events with quality metrics."""
    analytics_store.log_rag_search(
        tenant_id="test_tenant",
        query="What is the policy?",
        hits_count=5,
        avg_score=0.85,
        top_score=0.92,
        latency_ms=120
    )
    
    metrics = analytics_store.get_rag_quality_metrics("test_tenant")
    assert metrics["total_searches"] == 1
    assert metrics["avg_hits_per_search"] == 5.0
    assert metrics["avg_score"] == 0.85
    assert metrics["avg_top_score"] == 0.92


def test_log_agent_query(analytics_store):
    """Test logging agent query events."""
    analytics_store.log_agent_query(
        tenant_id="test_tenant",
        message_preview="What is the company policy?",
        intent="rag",
        tools_used=["rag", "llm"],
        total_tokens=1000,
        total_latency_ms=250,
        success=True,
        user_id="user123"
    )
    
    activity = analytics_store.get_activity_summary("test_tenant")
    assert activity["total_queries"] == 1
    assert activity["active_users"] == 1


def test_tool_usage_stats_filtered_by_time(analytics_store):
    """Test that tool usage stats can be filtered by timestamp."""
    # Log an old event (1 day ago)
    old_timestamp = int(time.time()) - 86400
    # Note: We can't directly set timestamp in current implementation,
    # but we can test the filtering works
    
    analytics_store.log_tool_usage(
        tenant_id="test_tenant",
        tool_name="web",
        latency_ms=100
    )
    
    # Get stats without time filter
    all_stats = analytics_store.get_tool_usage_stats("test_tenant")
    assert "web" in all_stats
    
    # Get stats with recent time filter
    recent_timestamp = int(time.time()) - 3600  # Last hour
    recent_stats = analytics_store.get_tool_usage_stats("test_tenant", recent_timestamp)
    assert "web" in recent_stats


def test_get_activity_summary(analytics_store):
    """Test getting activity summary for a tenant."""
    # Log multiple queries
    for i in range(3):
        analytics_store.log_agent_query(
            tenant_id="test_tenant",
            message_preview=f"Query {i}",
            intent="general",
            tools_used=["llm"],
            user_id=f"user{i}"
        )
    
    activity = analytics_store.get_activity_summary("test_tenant")
    assert activity["total_queries"] == 3
    assert activity["active_users"] == 3


def test_get_rag_quality_metrics(analytics_store):
    """Test getting RAG quality metrics."""
    # Log multiple RAG searches
    for i in range(3):
        analytics_store.log_rag_search(
            tenant_id="test_tenant",
            query=f"Query {i}",
            hits_count=5 + i,
            avg_score=0.8 + i * 0.05,
            top_score=0.9 + i * 0.05,
            latency_ms=100 + i * 10
        )
    
    metrics = analytics_store.get_rag_quality_metrics("test_tenant")
    assert metrics["total_searches"] == 3
    assert metrics["avg_hits_per_search"] > 0
    assert metrics["avg_score"] > 0


def test_multiple_tenants_isolation(analytics_store):
    """Test that analytics are properly isolated by tenant."""
    # Log events for tenant1
    analytics_store.log_tool_usage(
        tenant_id="tenant1",
        tool_name="rag",
        latency_ms=100
    )
    
    # Log events for tenant2
    analytics_store.log_tool_usage(
        tenant_id="tenant2",
        tool_name="web",
        latency_ms=200
    )
    
    # Check tenant1 stats
    tenant1_stats = analytics_store.get_tool_usage_stats("tenant1")
    assert "rag" in tenant1_stats
    assert "web" not in tenant1_stats
    
    # Check tenant2 stats
    tenant2_stats = analytics_store.get_tool_usage_stats("tenant2")
    assert "web" in tenant2_stats
    assert "rag" not in tenant2_stats