use heromodels::db::Db;
use macros::{
    register_authorized_create_by_id_fn, register_authorized_delete_by_id_fn,
    register_authorized_get_by_id_fn,
};
use rhai::plugin::*;
use rhai::{Array, Engine, EvalAltResult, Module, Position, FLOAT, INT};
use std::mem;
use std::sync::Arc;

use heromodels::db::hero::OurDB;
use heromodels::db::Collection;
use heromodels::models::biz::product::{Product, ProductComponent, ProductStatus, ProductType};
use heromodels::models::biz::company::{BusinessType, Company, CompanyStatus};
use heromodels::models::biz::sale::{Sale, SaleItem, SaleStatus};
use heromodels::models::biz::shareholder::{Shareholder, ShareholderType};

type RhaiProduct = Product;
type RhaiProductComponent = ProductComponent;
type RhaiCompany = Company;
type RhaiSale = Sale;
type RhaiSaleItem = SaleItem;
type RhaiShareholder = Shareholder;

#[export_module]
mod rhai_product_component_module {
    use super::{RhaiProductComponent, INT};

    #[rhai_fn(name = "new_product_component", return_raw)]
    pub fn new_product_component() -> Result<RhaiProductComponent, Box<EvalAltResult>> {
        Ok(ProductComponent::new())
    }

    #[rhai_fn(name = "name", return_raw)]
    pub fn set_name(
        component: &mut RhaiProductComponent,
        name: String,
    ) -> Result<RhaiProductComponent, Box<EvalAltResult>> {
        let owned = std::mem::take(component);
        *component = owned.name(name);
        Ok(component.clone())
    }

    #[rhai_fn(name = "description", return_raw)]
    pub fn set_description(
        component: &mut RhaiProductComponent,
        description: String,
    ) -> Result<RhaiProductComponent, Box<EvalAltResult>> {
        let owned = std::mem::take(component);
        *component = owned.description(description);
        Ok(component.clone())
    }

    #[rhai_fn(name = "quantity", return_raw)]
    pub fn set_quantity(
        component: &mut RhaiProductComponent,
        quantity: INT,
    ) -> Result<RhaiProductComponent, Box<EvalAltResult>> {
        let owned = std::mem::take(component);
        *component = owned.quantity(quantity as u32);
        Ok(component.clone())
    }

    // --- Getters ---
    #[rhai_fn(name = "get_name")]
    pub fn get_name(c: &mut RhaiProductComponent) -> String {
        c.name.clone()
    }
    #[rhai_fn(name = "get_description")]
    pub fn get_description(c: &mut RhaiProductComponent) -> String {
        c.description.clone()
    }
    #[rhai_fn(name = "get_quantity")]
    pub fn get_quantity(c: &mut RhaiProductComponent) -> INT {
        c.quantity as INT
    }
}

#[export_module]
mod rhai_product_module {
    use super::{Array, ProductStatus, ProductType, RhaiProduct, RhaiProductComponent, FLOAT, INT};

    #[rhai_fn(name = "new_product", return_raw)]
    pub fn new_product() -> Result<RhaiProduct, Box<EvalAltResult>> {
        Ok(Product::new())
    }

    // --- Setters ---
    #[rhai_fn(name = "name", return_raw)]
    pub fn set_name(
        product: &mut RhaiProduct,
        name: String,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let owned = std::mem::take(product);
        *product = owned.name(name);
        Ok(product.clone())
    }

    #[rhai_fn(name = "description", return_raw)]
    pub fn set_description(
        product: &mut RhaiProduct,
        description: String,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let owned = std::mem::take(product);
        *product = owned.description(description);
        Ok(product.clone())
    }

    #[rhai_fn(name = "price", return_raw)]
    pub fn set_price(
        product: &mut RhaiProduct,
        price: FLOAT,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let owned = std::mem::take(product);
        *product = owned.price(price);
        Ok(product.clone())
    }

    #[rhai_fn(name = "category", return_raw)]
    pub fn set_category(
        product: &mut RhaiProduct,
        category: String,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let owned = std::mem::take(product);
        *product = owned.category(category);
        Ok(product.clone())
    }

    #[rhai_fn(name = "max_amount", return_raw)]
    pub fn set_max_amount(
        product: &mut RhaiProduct,
        max_amount: INT,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let owned = std::mem::take(product);
        *product = owned.max_amount(max_amount as u32);
        Ok(product.clone())
    }

    #[rhai_fn(name = "purchase_till", return_raw)]
    pub fn set_purchase_till(
        product: &mut RhaiProduct,
        purchase_till: INT,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let owned = std::mem::take(product);
        *product = owned.purchase_till(purchase_till);
        Ok(product.clone())
    }

    #[rhai_fn(name = "active_till", return_raw)]
    pub fn set_active_till(
        product: &mut RhaiProduct,
        active_till: INT,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let owned = std::mem::take(product);
        *product = owned.active_till(active_till);
        Ok(product.clone())
    }

    #[rhai_fn(name = "type", return_raw)]
    pub fn set_type(
        product: &mut RhaiProduct,
        type_str: String,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let product_type = match type_str.to_lowercase().as_str() {
            "physical" => ProductType::Physical,
            "digital" => ProductType::Digital,
            "service" => ProductType::Service,
            "subscription" => ProductType::Subscription,
            _ => {
                return Err(EvalAltResult::ErrorSystem(
                    "Invalid ProductType".to_string(),
                    "Must be one of: Physical, Digital, Service, Subscription".into(),
                )
                .into())
            }
        };
        let owned = std::mem::take(product);
        *product = owned.product_type(product_type);
        Ok(product.clone())
    }

    #[rhai_fn(name = "status", return_raw)]
    pub fn set_status(
        product: &mut RhaiProduct,
        status_str: String,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let status = match status_str.to_lowercase().as_str() {
            "active" => ProductStatus::Active,
            "inactive" => ProductStatus::Inactive,
            "discontinued" => ProductStatus::Discontinued,
            _ => {
                return Err(EvalAltResult::ErrorSystem(
                    "Invalid ProductStatus".to_string(),
                    "Must be one of: Active, Inactive, Discontinued".into(),
                )
                .into())
            }
        };
        let owned = std::mem::take(product);
        *product = owned.status(status);
        Ok(product.clone())
    }

    #[rhai_fn(name = "add_component", return_raw)]
    pub fn add_component(
        product: &mut RhaiProduct,
        component: RhaiProductComponent,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let owned = std::mem::take(product);
        *product = owned.add_component(component);
        Ok(product.clone())
    }

    #[rhai_fn(name = "set_components", return_raw)]
    pub fn set_components(
        product: &mut RhaiProduct,
        components: Array,
    ) -> Result<RhaiProduct, Box<EvalAltResult>> {
        let mut product_components = Vec::new();
        for component_dynamic in components {
            if let Ok(component) = component_dynamic.try_cast::<RhaiProductComponent>() {
                product_components.push(component);
            } else {
                return Err(EvalAltResult::ErrorSystem(
                    "Invalid component type".to_string(),
                    "All components must be ProductComponent objects".into(),
                )
                .into());
            }
        }
        let owned = std::mem::take(product);
        *product = owned.components(product_components);
        Ok(product.clone())
    }

    // --- Getters ---
    #[rhai_fn(name = "get_id")]
    pub fn get_id(p: &mut RhaiProduct) -> i64 {
        p.base.id as i64
    }
    #[rhai_fn(name = "get_name")]
    pub fn get_name(p: &mut RhaiProduct) -> String {
        p.name.clone()
    }
    #[rhai_fn(name = "get_description")]
    pub fn get_description(p: &mut RhaiProduct) -> String {
        p.description.clone()
    }
    #[rhai_fn(name = "get_price")]
    pub fn get_price(p: &mut RhaiProduct) -> FLOAT {
        p.price
    }
    #[rhai_fn(name = "get_category")]
    pub fn get_category(p: &mut RhaiProduct) -> String {
        p.category.clone()
    }
    #[rhai_fn(name = "get_max_amount")]
    pub fn get_max_amount(p: &mut RhaiProduct) -> INT {
        p.max_amount as INT
    }
    #[rhai_fn(name = "get_purchase_till")]
    pub fn get_purchase_till(p: &mut RhaiProduct) -> INT {
        p.purchase_till
    }
    #[rhai_fn(name = "get_active_till")]
    pub fn get_active_till(p: &mut RhaiProduct) -> INT {
        p.active_till
    }
    #[rhai_fn(name = "get_type")]
    pub fn get_type(p: &mut RhaiProduct) -> String {
        format!("{:?}", p.product_type)
    }
    #[rhai_fn(name = "get_status")]
    pub fn get_status(p: &mut RhaiProduct) -> String {
        format!("{:?}", p.status)
    }
    #[rhai_fn(name = "get_components")]
    pub fn get_components(p: &mut RhaiProduct) -> Array {
        p.components
            .iter()
            .map(|c| rhai::Dynamic::from(c.clone()))
            .collect()
    }
}

pub fn register_product_rhai_module(engine: &mut Engine) {
    let mut product_module = exported_module!(rhai_product_module);
    let mut component_module = exported_module!(rhai_product_component_module);

    register_authorized_create_by_id_fn!(
        product_module: &mut product_module,
        rhai_fn_name: "save_product",
        resource_type_str: "Product",
        rhai_return_rust_type: heromodels::models::biz::product::Product
    );
    register_authorized_get_by_id_fn!(
        product_module: &mut product_module,
        rhai_fn_name: "get_product",
        resource_type_str: "Product",
        rhai_return_rust_type: heromodels::models::biz::product::Product
    );
    register_authorized_delete_by_id_fn!(
        product_module: &mut product_module,
        rhai_fn_name: "delete_product",
        resource_type_str: "Product",
        rhai_return_rust_type: heromodels::models::biz::product::Product
    );

    engine.register_global_module(product_module.into());
    engine.register_global_module(component_module.into());
}

// Company Rhai wrapper functions
#[export_module]
mod rhai_company_module {
    use super::{BusinessType, CompanyStatus, RhaiCompany};

    #[rhai_fn(name = "new_company", return_raw)]
    pub fn new_company() -> Result<RhaiCompany, Box<EvalAltResult>> {
        Ok(Company::new())
    }

    #[rhai_fn(name = "name", return_raw)]
    pub fn set_name(
        company: &mut RhaiCompany,
        name: String,
    ) -> Result<RhaiCompany, Box<EvalAltResult>> {
        let owned = std::mem::take(company);
        *company = owned.name(name);
        Ok(company.clone())
    }

    #[rhai_fn(name = "get_company_id")]
    pub fn get_company_id(company: &mut RhaiCompany) -> i64 {
        company.id() as i64
    }

    #[rhai_fn(name = "get_company_name")]
    pub fn get_company_name(company: &mut RhaiCompany) -> String {
        company.name().clone()
    }
}

pub fn register_company_rhai_module(engine: &mut Engine) {
    let mut module = exported_module!(rhai_company_module);

    register_authorized_create_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "save_company",
        resource_type_str: "Company",
        rhai_return_rust_type: heromodels::models::biz::company::Company
    );

    register_authorized_get_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "get_company",
        resource_type_str: "Company",
        rhai_return_rust_type: heromodels::models::biz::company::Company
    );

    engine.register_global_module(module.into());
}

// Sale Rhai wrapper functions
#[export_module]
mod rhai_sale_module {
    use super::{RhaiSale, RhaiSaleItem, SaleStatus};

    #[rhai_fn(name = "new_sale", return_raw)]
    pub fn new_sale() -> Result<RhaiSale, Box<EvalAltResult>> {
        Ok(Sale::new())
    }

    #[rhai_fn(name = "new_sale_item", return_raw)]
    pub fn new_sale_item() -> Result<RhaiSaleItem, Box<EvalAltResult>> {
        Ok(SaleItem::new())
    }

    #[rhai_fn(name = "company_id", return_raw)]
    pub fn set_sale_company_id(sale: &mut RhaiSale, company_id: i64) -> Result<RhaiSale, Box<EvalAltResult>> {
        let owned = std::mem::take(sale);
        *sale = owned.company_id(company_id as u32);
        Ok(sale.clone())
    }

    #[rhai_fn(name = "total_amount", return_raw)]
    pub fn set_sale_total_amount(sale: &mut RhaiSale, total_amount: f64) -> Result<RhaiSale, Box<EvalAltResult>> {
        let owned = std::mem::take(sale);
        *sale = owned.total_amount(total_amount);
        Ok(sale.clone())
    }

    #[rhai_fn(name = "get_sale_id")]
    pub fn get_sale_id(sale: &mut RhaiSale) -> i64 {
        sale.id() as i64
    }

    #[rhai_fn(name = "get_sale_total_amount")]
    pub fn get_sale_total_amount(sale: &mut RhaiSale) -> f64 {
        sale.total_amount()
    }
}

pub fn register_sale_rhai_module(engine: &mut Engine) {
    let mut module = exported_module!(rhai_sale_module);

    register_authorized_create_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "save_sale",
        resource_type_str: "Sale",
        rhai_return_rust_type: heromodels::models::biz::sale::Sale
    );

    register_authorized_get_by_id_fn!(
        module: &mut module,
        rhai_fn_name: "get_sale",
        resource_type_str: "Sale",
        rhai_return_rust_type: heromodels::models::biz::sale::Sale
    );

    engine.register_global_module(module.into());
}