loco straucture

src/controllers/shop.rs

@@ -0,0 +1,174 @@
+//! Public storefront: product listings, product detail, category pages and the
+//! lazily-loaded category sidebar.
+
+use axum_extra::extract::cookie::CookieJar;
+use loco_rs::prelude::*;
+use sea_orm::{ColumnTrait, EntityTrait, QueryFilter, QueryOrder, QuerySelect, Set};
+use serde_json::json;
+
+use crate::{
+    controllers::i18n::current_lang,
+    shared::guard,
+    models::{categories, product_images, products},
+    views::shop as view,
+};
+
+/// Shape a list of products into card rows, loading each one's primary image.
+async fn product_rows(ctx: &AppContext, list: Vec<products::Model>) -> Result<Vec<serde_json::Value>> {
+    let mut rows = Vec::with_capacity(list.len());
+    for product in list {
+        let image = product_images::first_for(ctx, product.id).await?;
+        rows.push(view::product_card(&product, image, None));
+    }
+    Ok(rows)
+}
+
+/// Latest published products (with primary image), shaped for templates. Reused
+/// by the home-page landing grid.
+pub(crate) async fn featured_products(
+    ctx: &AppContext,
+    limit: u64,
+) -> Result<Vec<serde_json::Value>> {
+    let list = products::Entity::find()
+        .filter(products::Column::Published.eq(true))
+        .order_by_desc(products::Column::PublishedAt)
+        .limit(limit)
+        .all(&ctx.db)
+        .await?;
+    product_rows(ctx, list).await
+}
+
+/// The site-wide category sidebar, loaded lazily via htmx by the base layout so
+/// every page gets it without each handler having to supply category data.
+#[debug_handler]
+async fn category_sidebar(
+    jar: CookieJar,
+    ViewEngine(v): ViewEngine<TeraView>,
+    State(ctx): State<AppContext>,
+) -> Result<Response> {
+    let published = categories::published(&ctx).await?;
+    format::view(
+        &v,
+        "shop/_sidebar.html",
+        json!({
+            "category_tree": view::sidebar_rows(&categories::tree(&published)),
+            "lang": current_lang(&jar),
+        }),
+    )
+}
+
+#[debug_handler]
+async fn index(
+    jar: CookieJar,
+    ViewEngine(v): ViewEngine<TeraView>,
+    State(ctx): State<AppContext>,
+) -> Result<Response> {
+    let list = products::Entity::find()
+        .filter(products::Column::Published.eq(true))
+        .order_by_desc(products::Column::PublishedAt)
+        .all(&ctx.db)
+        .await?;
+
+    format::view(
+        &v,
+        "shop/index.html",
+        json!({
+            "products": product_rows(&ctx, list).await?,
+            "logged_in_admin": guard::logged_in(&ctx, &jar).await,
+            "lang": current_lang(&jar),
+        }),
+    )
+}
+
+#[debug_handler]
+async fn show(
+    jar: CookieJar,
+    ViewEngine(v): ViewEngine<TeraView>,
+    Path(slug): Path<String>,
+    State(ctx): State<AppContext>,
+) -> Result<Response> {
+    let product = products::Entity::find()
+        .filter(products::Column::Slug.eq(slug))
+        .filter(products::Column::Published.eq(true))
+        .one(&ctx.db)
+        .await?
+        .ok_or_else(|| Error::NotFound)?;
+
+    let mut active = product.clone().into_active_model();
+    active.view_count = Set(product.view_count + 1);
+    let product = active.update(&ctx.db).await?;
+
+    let images = product_images::Entity::find()
+        .filter(product_images::Column::ProductId.eq(product.id))
+        .order_by_asc(product_images::Column::Position)
+        .all(&ctx.db)
+        .await?;
+    let category = match product.category_id {
+        Some(id) => categories::Entity::find_by_id(id).one(&ctx.db).await?,
+        None => None,
+    };
+
+    format::view(
+        &v,
+        "shop/show.html",
+        json!({
+            "product": view::product_card(&product, None, category.as_ref().map(|c| c.name.clone())),
+            "images": images.iter().map(|i| i.image_id.clone()).collect::<Vec<_>>(),
+            "category": category,
+            "logged_in_admin": guard::logged_in(&ctx, &jar).await,
+            "lang": current_lang(&jar),
+        }),
+    )
+}
+
+#[debug_handler]
+async fn category(
+    jar: CookieJar,
+    ViewEngine(v): ViewEngine<TeraView>,
+    Path(slug): Path<String>,
+    State(ctx): State<AppContext>,
+) -> Result<Response> {
+    let published = categories::published(&ctx).await?;
+    let category = published
+        .iter()
+        .find(|c| c.slug == slug)
+        .cloned()
+        .ok_or_else(|| Error::NotFound)?;
+
+    let breadcrumbs = categories::ancestors(&published, category.parent_id);
+    let children = categories::children_of(&published, category.id);
+
+    // Products listed here span this category and all of its descendants, so a
+    // parent category is never empty just because its products live in leaves.
+    let mut category_ids: Vec<i32> = categories::descendant_ids(&published, category.id)
+        .into_iter()
+        .collect();
+    category_ids.push(category.id);
+    let list = products::Entity::find()
+        .filter(products::Column::CategoryId.is_in(category_ids))
+        .filter(products::Column::Published.eq(true))
+        .order_by_desc(products::Column::PublishedAt)
+        .all(&ctx.db)
+        .await?;
+
+    format::view(
+        &v,
+        "shop/category.html",
+        json!({
+            "category": category,
+            "breadcrumbs": breadcrumbs,
+            "children": children,
+            "products": product_rows(&ctx, list).await?,
+            "logged_in_admin": guard::logged_in(&ctx, &jar).await,
+            "lang": current_lang(&jar),
+        }),
+    )
+}
+
+pub fn routes() -> Routes {
+    Routes::new()
+        .add("/shop", get(index))
+        .add("/shop/{slug}", get(show))
+        .add("/category/{slug}", get(category))
+        .add("/partials/categories", get(category_sidebar))
+}