schema-sync 1.0.0

//! Developer: s4gor
//! Github: https://github.com/s4gor
//!
//! Basic usage example for schema-sync
//!
//! This example demonstrates how to use the schema-sync crate
//! to synchronize schemas for multi-tenant databases.
//!
//! Note: This is a conceptual example. Actual implementations
//! of DatabaseAdapter, Planner, Executor, and DiffCalculator
//! would be provided by database-specific crates or the user.

use schema_sync::prelude::*;

/// Example: Sync a tenant's schema
///
/// This shows the basic flow:
/// 1. Create a database adapter
/// 2. Create an engine with all required components
/// 3. Sync a tenant's schema
#[tokio::main]
async fn main() -> Result<()> {
    // In a real implementation, you would create a concrete adapter:
    // let adapter = PostgresAdapter::new("postgresql://...").await?;
    
    // For this example, we'll show the API structure:
    println!("Schema Sync - Basic Usage Example");
    println!("==================================");
    println!();
    println!("1. Create a database adapter (PostgreSQL, MySQL, etc.)");
    println!("2. Create planner, executor, and diff calculator");
    println!("3. Create engine from adapter");
    println!("4. Sync tenant schema");
    println!();
    
    // Example tenant context
    let tenant = TenantContext::new("tenant_123");
    println!("Tenant: {}", tenant.id());
    
    // Example of what the API would look like:
    /*
    let adapter = PostgresAdapter::new("postgresql://localhost/db").await?;
    
    let planner = DefaultPlanner::new();
    let executor = DefaultExecutor::new();
    let diff_calculator = DefaultDiffCalculator::new();
    let snapshot_store = FileSnapshotStore::new("./snapshots")?;
    
    let engine = Engine::from_adapter(
        Box::new(adapter),
        Box::new(planner),
        Box::new(executor),
        Box::new(diff_calculator),
        Some(Box::new(snapshot_store)),
    );
    
    // Sync with a target snapshot
    let target_snapshot = engine.inspect_tenant(&tenant).await?;
    let result = engine.sync_tenant(&tenant, Some(&target_snapshot), true).await?;
    
    if result.already_in_sync {
        println!("Schema is already in sync!");
    } else {
        println!("Applied {} changes", result.changes_applied);
    }
    */
    
    Ok(())
}