chore/wine-details-query

backend/src/index.ts

@@ -18,6 +18,25 @@ const typeDefs = `#graphql
     ratingCount: Int!
   }
 
+  type WineDetails {
+    id: ID!
+    name: String!
+    type: String!
+    elaborate: String
+    abv: Float
+    body: String
+    acidity: String
+    winery: String!
+    wineryWebsite: String
+    region: String!
+    country: String!
+    vintages: [Int!]!
+    grapes: [String!]!
+    foodPairings: [String!]!
+    avgRating: Float
+    ratingCount: Int!
+  }
+
   type WinePage {
     items: [Wine!]!
     totalCount: Int!
@@ -36,6 +55,8 @@ const typeDefs = `#graphql
       offset: Int = 0
     ): WinePage!
 
+    wine(id: ID!): WineDetails
+
     foodCategories: [FoodCategory!]!
 
     winesByFoodCategory(
@@ -92,6 +113,66 @@ const resolvers = {
       };
     },
 
+    wine: async (
+  _: unknown,
+  args: { id: string }
+) => {
+  const wineId = Number(args.id);
+
+  if (!Number.isInteger(wineId)) {
+    return null;
+  }
+
+  const result = await pool.query(
+      `
+      SELECT
+        w.id,
+        w.name,
+        w.type,
+        w.elaborate,
+        w.abv::float AS abv,
+        w.body,
+        w.acidity,
+        wi.name AS winery,
+        wi.website AS "wineryWebsite",
+        r.name AS region,
+        c.name AS country,
+        w.vintages,
+        w.avg_rating::float AS "avgRating",
+        w.rating_count AS "ratingCount",
+
+        COALESCE(
+          (
+            SELECT array_agg(g.name ORDER BY g.name)
+            FROM wine_grapes wg
+            JOIN grapes g ON g.id = wg.grape_id
+            WHERE wg.wine_id = w.id
+          ),
+          ARRAY[]::text[]
+        ) AS grapes,
+
+        COALESCE(
+          (
+            SELECT array_agg(f.name ORDER BY f.name)
+            FROM wine_foods wf
+            JOIN foods f ON f.id = wf.food_id
+            WHERE wf.wine_id = w.id
+          ),
+          ARRAY[]::text[]
+        ) AS "foodPairings"
+
+      FROM wines w
+      JOIN wineries wi ON w.winery_id = wi.id
+      JOIN regions r ON w.region_id = r.id
+      JOIN countries c ON w.country_code = c.code
+      WHERE w.id = $1
+      `,
+      [wineId]
+    );
+
+    return result.rows[0] ?? null;
+  },
+
     foodCategories: async () => {
       const result = await pool.query(
         `