From 66c51b0e714fa8a1c80784108191270babc8525e Mon Sep 17 00:00:00 2001
From: unwox <me@unwox.com>
Date: Sun, 31 Aug 2025 17:51:57 +0600
Subject: implement shop

---
 pages/shop/index.fnl | 155 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 pages/shop/index.fnl

(limited to 'pages/shop/index.fnl')

diff --git a/pages/shop/index.fnl b/pages/shop/index.fnl
new file mode 100644
index 0000000..5a96ab2
--- /dev/null
+++ b/pages/shop/index.fnl
@@ -0,0 +1,155 @@
+(import-macros {:compile-html <>} :macros)
+(local lib (require :lib))
+(local dicts (require :dicts))
+(local templates (require :templates))
+
+(fn all-products [db authenticated?]
+  (local where
+    (if (not authenticated?)
+      "WHERE products.published = true"
+      ""))
+  (_G.must
+    (luna.db.query-assoc db
+      (..
+        "SELECT products.name,
+                products.title,
+                products.published,
+                products.short_description as \"short-description\",
+                products.price_per AS \"price-per\",
+                products.type,
+                products.image1,
+                products.image2,
+                products.image3,
+                products.image4,
+                products.image5
+        FROM products "
+        where
+        " ORDER BY products.position") [])))
+
+(fn quantity-steps [stock step]
+  (assert (< 0 step) "step must be greater than 0")
+
+  (var result [])
+  (var first (math.min stock step))
+  (while (<= first stock)
+    (table.insert result first)
+    (set first (+ first step)))
+  result)
+
+(fn item-template [product]
+  (local item-url (.. "/shop/" product.name))
+  ;; (var quantity-options [])
+  ;; (if (< 0 product.stock)
+  ;;   (each [_ q (ipairs (quantity-steps product.stock 50))]
+  ;;     (table.insert quantity-options
+  ;;                   (<>
+  ;;                    [:option {:value (tostring q)}
+  ;;                     (.. q " грамм за " (* product.price-per q) "₽")])))
+  ;;   (table.insert quantity-options (<> [:option {:value "0"} "Товар закончился"])))
+
+  (local images [])
+  (for [i 2 5]
+    (table.insert images (. product (.. "image" i))))
+
+  (<>
+   [:section {:class (.. "shop-item"
+                         (if (not product.published)
+                             " shop-item-not-published" ""))}
+    [:a {:href item-url}
+     [:div {:class "shop-item-imgs"}
+      [:img {:class "shop-item-img"
+             :src (.. "/static/files/" (. product.image1) "-thumbnail.jpg")}]
+      (table.concat
+       (icollect [idx image (ipairs images)]
+         (<>
+           [:img {:class "shop-item-img" :src (.. "/static/files/" image "-thumbnail.jpg")
+                  :loading "lazy"
+                  :style (.. "z-index: " (+ idx 2) ";"
+                             "width: calc(100% / " (# images) ");"
+                             "left: calc(100% / " (# images) " * " (- idx 1) ")")}])))]]
+    [:a {:href item-url} [:h3 {:class "shop-item-title"} product.title]]
+    [:div {:style "font-style: italic; margin-bottom: 0.25rem;"}
+      (or (dicts.label dicts.tea-type product.type) product.type) ", "
+      [:strong {} (* 50 product.price-per) "₽ за 50 гр. "]]
+    ;; [:div {:class "shop-item-price"}
+    ;;  [:form {:method "POST"}
+    ;;   [:input {:type "hidden" :name "name" :value product.name}]
+    ;;   [:select {:name "quantity"} (table.concat quantity-options)]
+    ;;   [:button {:type "submit"} "Добавить"]]]
+    [:div {} product.short-description]]))
+
+(fn content [db basket basket-total authenticated?]
+  [(<>
+    [:div {:class "side"}
+     (templates.header "/shop" authenticated?)
+     (if (< 0 (# basket))
+      (<>
+       [:article {:class "article"}
+        [:h2 {} "Корзина"]
+        [:div {}
+         (table.concat
+          (icollect [_ item (ipairs basket)]
+            (templates.basket-item item "/shop")))]
+        [:div {} "~~~"]
+        [:div {:class "basket-total"} (.. "Итого: " basket-total "₽")]
+        [:a {:href "/shop/order"} "Оформить заказ"]])
+      "")])
+   (<>
+    [:div {:class "content"}
+     [:div {:class "mb-1"} [:a {:href "/"} "⟵ Обратно на главную"]]
+     [:h2 {:class "mb-1 product-page-title"}
+       "Магазин"
+       (if authenticated?
+        (<> [:a {:style "font-size: 1rem; margin-left: 0.75rem;"
+                 :href (.. "/shop/add")} "+ Добавить"])
+        "")]
+     [:div {:class "shop-items"}
+      (let [products (all-products db authenticated?)]
+        (if (< 0 (# products))
+          (table.concat
+            (icollect [_ v (ipairs products)]
+              (item-template v)))
+          (<> [:em {} "Пока что здесь ничего нет!"])))]])])
+
+(fn create-order [db]
+  (let [id (_G.must (luna.crypto.random-string 64))]
+    (_G.must
+     (luna.db.exec
+       db "INSERT INTO orders (id, creation_time) VALUES (?, ?)"
+       [id (lib.now)]))
+    id))
+
+(fn create-order-line [db order-id name quantity]
+  (_G.must
+    (luna.db.exec
+      db
+      "INSERT INTO order_lines (order_id, product_name, quantity) VALUES (?, ?, ?)"
+      [order-id name quantity])))
+
+(fn render [request db authenticated?]
+  (let [order-id (lib.order-id request)
+        basket (if order-id (lib.basket db order-id) [])
+        basket-total (accumulate [sum 0 _ v (ipairs basket)]
+                       (+ sum (* v.quantity v.price-per)))]
+   (if (= request.method "POST")
+    (do
+      (var order-id (lib.order-id request))
+      (var headers
+       (if (not order-id)
+         (do
+          (set order-id (create-order db))
+          {:Set-Cookie (.. "order= " order-id "; HttpOnly; SameSite=strict"
+                           (if luna.debug? "" "; Secure"))})
+         {}))
+
+      (if (and order-id request.body)
+        (let [body-values (lib.parse-values request.body)]
+          (create-order-line db order-id body-values.name body-values.quantity)
+          (tset headers :Location "/shop")
+          (values 302 headers ""))
+        (values 400 {} "bad body")))
+    (values
+      200 {}
+      (templates.base (content db basket basket-total authenticated?))))))
+
+{: render}
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