db/_archive/herodb_old/src/cmd/dbexample_prod/main.rs

use chrono::{DateTime, Duration, Utc};
use herodb::db::{DB, DBBuilder};
use herodb::models::biz::{
    Currency, CurrencyBuilder, Product, ProductBuilder, ProductComponent, ProductComponentBuilder,
    ProductStatus, ProductType, Sale, SaleBuilder, SaleItem, SaleItemBuilder, SaleStatus,
};
use rhai::{Engine, packages::Package};
use std::fs;
use std::path::PathBuf;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Note: This example has been modified to work with the current API
    println!("DB Example 2: Using Builder Pattern and Model-Specific Methods");
    println!("============================================================");

    // Create a temporary directory for the database
    let db_path = PathBuf::from("/tmp/dbexample_prod");
    if db_path.exists() {
        fs::remove_dir_all(&db_path)?;
    }
    fs::create_dir_all(&db_path)?;
    println!("Database path: {:?}", db_path);

    // Skip the Rhai engine part as it has compatibility issues
    println!("\nSkipping Rhai engine part due to compatibility issues");
    
    // Create a database instance with our models registered
    let mut db = DBBuilder::new(&db_path)
        .register_model::<Product>()
        .register_model::<Currency>()
        .register_model::<Sale>()
        .build()?;

    println!("\n1. Creating Products with Builder Pattern");
    println!("----------------------------------------");

    // Create a currency using the builder
    let usd = CurrencyBuilder::new()
        .id(1) // Add the required ID
        .amount(0.0) // Initial amount
        .currency_code("USD")
        .build()?;

    // Insert the currency
    db.insert_currency(usd.clone())?;
    println!("Currency created: ${:.2} {}", usd.amount, usd.currency_code);

    // Create product components using the builder
    let component1 = ProductComponentBuilder::new()
        .id(101)
        .name("Basic Support")
        .description("24/7 email support")
        .quantity(1)
        .build()?;

    let component2 = ProductComponentBuilder::new()
        .id(102)
        .name("Premium Support")
        .description("24/7 phone and email support")
        .quantity(1)
        .build()?;
    
    // Create products using the builder
    let product1 = ProductBuilder::new()
        .id(1)
        .name("Standard Plan")
        .description("Our standard service offering")
        .price(
            CurrencyBuilder::new()
                .id(2) // Add ID
                .amount(29.99)
                .currency_code("USD")
                .build()?,
        )
        .type_(ProductType::Service)
        .category("Subscription")
        .status(ProductStatus::Available)
        .max_amount(1000)
        .validity_days(30)
        .add_component(component1)
        .build()?;

    let product2 = ProductBuilder::new()
        .id(2)
        .name("Premium Plan")
        .description("Our premium service offering with priority support")
        .price(
            CurrencyBuilder::new()
                .id(3) // Add ID
                .amount(99.99)
                .currency_code("USD")
                .build()?,
        )
        .type_(ProductType::Service)
        .category("Subscription")
        .status(ProductStatus::Available)
        .max_amount(500)
        .validity_days(30)
        .add_component(component2)
        .build()?;

    // Insert products using model-specific methods
    db.insert_product(product1.clone())?;
    db.insert_product(product2.clone())?;

    println!(
        "Product created: {} (${:.2})",
        product1.name, product1.price.amount
    );
    println!(
        "Product created: {} (${:.2})",
        product2.name, product2.price.amount
    );

    println!("\n2. Retrieving Products");
    println!("--------------------");

    // Retrieve products using model-specific methods
    let retrieved_product1 = db.get_product(1)?;
    println!(
        "Retrieved: {} (${:.2})",
        retrieved_product1.name, retrieved_product1.price.amount
    );
    println!("Components:");
    for component in &retrieved_product1.components {
        println!("  - {} ({})", component.name, component.description);
    }

    println!("\n3. Listing All Products");
    println!("----------------------");

    // List all products using model-specific methods
    let all_products = db.list_products()?;
    println!("Found {} products:", all_products.len());
    for product in all_products {
        println!(
            "  - {} (${:.2}, {})",
            product.name,
            product.price.amount,
            if product.is_purchasable() {
                "Available"
            } else {
                "Unavailable"
            }
        );
    }

    println!("\n4. Creating a Sale");
    println!("-----------------");

    // Create a sale using the builder
    let now = Utc::now();

    let item1 = SaleItemBuilder::new()
        .id(201)
        .sale_id(1)
        .product_id(Some(1))
        .name("Standard Plan")
        .quantity(1)
        .unit_price(
            CurrencyBuilder::new()
                .id(4) // Add ID
                .amount(29.99)
                .currency_code("USD")
                .build()?,
        )
        .active_till(now + Duration::days(30))
        .build()?;

    let sale = SaleBuilder::new()
        .id(1)
        .company_id(101)
        .customer_id(123)
        .currency_code("USD")
        .status(SaleStatus::Pending)
        .add_item(item1)
        .build()?;

    // Insert the sale using model-specific methods
    db.insert_sale(sale.clone())?;
    println!(
        "Sale created: #{} for customer #{} (${:.2})",
        sale.id, sale.customer_id, sale.total_amount.amount
    );

    println!("\n5. Updating a Sale");
    println!("-----------------");

    // Retrieve the sale, update it, and save it back
    let mut retrieved_sale = db.get_sale(1)?;
    println!(
        "Retrieved sale: #{} with status {:?}",
        retrieved_sale.id, retrieved_sale.status
    );

    // Update the status
    retrieved_sale.update_status(SaleStatus::Completed);
    db.insert_sale(retrieved_sale.clone())?;

    println!("Updated sale status to {:?}", retrieved_sale.status);

    println!("\n6. Deleting Objects");
    println!("------------------");

    // Delete a product
    db.delete_product(2)?;
    println!("Deleted product #2");

    // List remaining products
    let remaining_products = db.list_products()?;
    println!("Remaining products: {}", remaining_products.len());
    for product in remaining_products {
        println!("  - {}", product.name);
    }

    println!("\nExample completed successfully!");
    Ok(())
}