//! Tests for QueryBuilder functionality
//!
//! These tests verify the critical query builder features:
//! - WHERE conditions (all operators)
//! - COUNT optimization
//! - Bulk DELETE
//! - ORDER BY, LIMIT, OFFSET
//!
//! Note: These tests require a test database connection.
//! Set TEST_DATABASE_URL environment variable to run.

#![allow(dead_code)]

use tideorm::query::{Order, ConditionValue};

// ============================================================================
// Unit tests for QueryBuilder construction (no DB needed)
// ============================================================================

#[cfg(test)]
mod query_builder_unit_tests {
    use super::*;
    
    // These tests verify the builder pattern without database connection
    
    #[test]
    fn test_order_enum() {
        assert_eq!(Order::Asc.as_str(), "ASC");
        assert_eq!(Order::Desc.as_str(), "DESC");
    }
    
    #[test]
    fn test_condition_value_single() {
        let val = ConditionValue::Single(serde_json::json!("test"));
        match val {
            ConditionValue::Single(v) => assert_eq!(v, serde_json::json!("test")),
            _ => panic!("Expected Single variant"),
        }
    }
    
    #[test]
    fn test_condition_value_list() {
        let val = ConditionValue::List(vec![
            serde_json::json!("a"),
            serde_json::json!("b"),
        ]);
        match val {
            ConditionValue::List(v) => {
                assert_eq!(v.len(), 2);
                assert_eq!(v[0], serde_json::json!("a"));
                assert_eq!(v[1], serde_json::json!("b"));
            },
            _ => panic!("Expected List variant"),
        }
    }
    
    #[test]
    fn test_condition_value_range() {
        let val = ConditionValue::Range(serde_json::json!(1), serde_json::json!(10));
        match val {
            ConditionValue::Range(low, high) => {
                assert_eq!(low, serde_json::json!(1));
                assert_eq!(high, serde_json::json!(10));
            },
            _ => panic!("Expected Range variant"),
        }
    }
    
    #[test]
    fn test_condition_value_none() {
        let val = ConditionValue::None;
        match val {
            ConditionValue::None => {},
            _ => panic!("Expected None variant"),
        }
    }
}

#[cfg(test)]
mod operator_tests {
    use tideorm::query::Operator;
    
    #[test]
    fn test_all_operators_exist() {
        // Verify all operators can be constructed
        let _ = Operator::Eq;
        let _ = Operator::NotEq;
        let _ = Operator::Gt;
        let _ = Operator::Gte;
        let _ = Operator::Lt;
        let _ = Operator::Lte;
        let _ = Operator::Like;
        let _ = Operator::NotLike;
        let _ = Operator::In;
        let _ = Operator::NotIn;
        let _ = Operator::IsNull;
        let _ = Operator::IsNotNull;
        let _ = Operator::Between;
    }
}

// ============================================================================
// Integration tests (require database - marked with #[ignore] by default)
// ============================================================================

/// Run these tests with: cargo test -- --ignored
/// And with TEST_DATABASE_URL set
#[cfg(test)]
mod integration_tests {
    // These would be full integration tests with actual database
    // Leaving as placeholder structure for future implementation
    
    /*
    Example test structure:
    
    #[derive(Model, Clone, Debug, Serialize, Deserialize)]
    #[tide(table = "test_users")]
    struct TestUser {
        #[tide(primary_key, auto_increment)]
        pub id: i64,
        pub name: String,
        pub email: String,
        pub age: i32,
        pub active: bool,
    }
    
    async fn setup_db() -> tideorm::Result<()> {
        let url = std::env::var("TEST_DATABASE_URL")
            .unwrap_or_else(|_| "sqlite::memory:".to_string());
        
        TideConfig::init()
            .database(&url)
            .sync(true)
            .connect()
            .await?;
        
        Ok(())
    }
    
    #[tokio::test]
    #[ignore]
    async fn test_where_eq() {
        setup_db().await.unwrap();
        
        // Create test data
        TestUser { id: 0, name: "John".into(), email: "john@test.com".into(), age: 25, active: true }
            .save().await.unwrap();
        TestUser { id: 0, name: "Jane".into(), email: "jane@test.com".into(), age: 30, active: false }
            .save().await.unwrap();
        
        // Test WHERE eq
        let results = TestUser::query()
            .where_eq("name", "John")
            .get()
            .await
            .unwrap();
        
        assert_eq!(results.len(), 1);
        assert_eq!(results[0].name, "John");
    }
    
    #[tokio::test]
    #[ignore]
    async fn test_where_in() {
        setup_db().await.unwrap();
        
        let results = TestUser::query()
            .where_in("name", vec!["John", "Jane"])
            .get()
            .await
            .unwrap();
        
        assert_eq!(results.len(), 2);
    }
    
    #[tokio::test]
    #[ignore]
    async fn test_count_with_conditions() {
        setup_db().await.unwrap();
        
        let count = TestUser::query()
            .where_eq("active", true)
            .count()
            .await
            .unwrap();
        
        assert_eq!(count, 1);
    }
    
    #[tokio::test]
    #[ignore]
    async fn test_bulk_delete() {
        setup_db().await.unwrap();
        
        let deleted = TestUser::query()
            .where_eq("active", false)
            .delete()
            .await
            .unwrap();
        
        assert_eq!(deleted, 1);
        
        // Verify deleted
        let count = TestUser::count().await.unwrap();
        assert_eq!(count, 1);
    }
    */
}

// ============================================================================
// Database Pool Configuration Tests
// ============================================================================

#[cfg(test)]
mod pool_config_tests {
    use tideorm::Database;
    use std::time::Duration;
    
    #[test]
    fn test_database_builder_creation() {
        let builder = Database::builder()
            .url("sqlite::memory:")
            .max_connections(20)
            .min_connections(5)
            .connect_timeout(Duration::from_secs(10))
            .idle_timeout(Duration::from_secs(300))
            .max_lifetime(Duration::from_secs(3600));
        
        // Builder should compile and be usable
        // Note: Can't verify internal state without exposing it
        // The actual test happens at build() time
        drop(builder);
    }
    
    #[tokio::test]
    #[ignore] // Requires actual database
    async fn test_pool_connection() {
        let db = Database::builder()
            .url("sqlite::memory:")
            .max_connections(5)
            .min_connections(1)
            .connect_timeout(Duration::from_secs(5))
            .build()
            .await;
        
        assert!(db.is_ok(), "Should connect with pool settings");
        
        // Verify connection is healthy
        let db = db.unwrap();
        let ping = db.ping().await;
        assert!(ping.is_ok());
    }
}

// ============================================================================
// WHERE Clause Builder Tests
// ============================================================================

#[cfg(test)]
mod where_clause_tests {
    use tideorm::query::WhereCondition;
    
    #[test]
    fn test_where_condition_struct() {
        // Basic structure test
        let condition = WhereCondition {
            column: "email".to_string(),
            operator: tideorm::query::Operator::Eq,
            value: tideorm::query::ConditionValue::Single(serde_json::json!("test@example.com")),
        };
        
        assert_eq!(condition.column, "email");
    }
}
