69 lines
1.7 KiB
Rust
69 lines
1.7 KiB
Rust
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use model::{ProductId, Quantity, QuantityUnit};
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use seed::prelude::*;
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use serde::{Deserialize, Serialize};
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use crate::{Model, Msg};
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#[derive(Debug)]
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pub enum CartMsg {
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AddItem {
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quantity: Quantity,
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quantity_unit: QuantityUnit,
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product_id: ProductId,
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},
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ModifyItem {
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quantity: Quantity,
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quantity_unit: QuantityUnit,
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product_id: ProductId,
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},
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}
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pub type Items = indexmap::IndexMap<model::ProductId, Item>;
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#[derive(Debug, Serialize, Deserialize)]
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pub struct Item {
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product_id: ProductId,
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quantity: Quantity,
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quantity_unit: QuantityUnit,
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}
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#[derive(Debug, Default, Serialize, Deserialize)]
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pub struct ShoppingCart {
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pub cart_id: Option<model::ShoppingCartId>,
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pub items: Items,
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}
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pub fn init(model: &mut Model, _orders: &mut impl Orders<Msg>) {
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model.cart = load_local();
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}
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pub fn update(msg: CartMsg, model: &mut Model, _orders: &mut impl Orders<Msg>) {
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match msg {
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CartMsg::AddItem {
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quantity,
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quantity_unit,
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product_id,
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} => {
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{
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let items: &mut Items = &mut model.cart.items;
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let entry = items.entry(product_id).or_insert_with(|| Item {
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quantity,
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quantity_unit,
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product_id,
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});
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entry.quantity = quantity;
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entry.quantity_unit = quantity_unit;
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}
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store_local(&model.cart);
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}
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CartMsg::ModifyItem { .. } => {}
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}
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}
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fn load_local() -> ShoppingCart {
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LocalStorage::get("ct").unwrap_or_default()
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}
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fn store_local(cart: &ShoppingCart) {
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LocalStorage::insert("ct", cart).ok();
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}
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