Added the catalogue models and seed to support phase 6 of the POC prototype in the Persistence package.

Packages/Persistence/Sources/Public/Models/Event.swift

@@ -0,0 +1,39 @@
+import Foundation
+
+/// A `Sendable` snapshot of a con where shops trade in person, so a sale agreed on the site can be collected there.
+public struct Event: Sendable, Equatable {
+
+    // MARK: Properties
+
+    /// The event's URL slug.
+    public let slug: String
+    /// The event's name.
+    public let name: String
+    /// Where it is held, e.g. `Jaarbeurs, Utrecht`.
+    public let venue: String
+    /// The first day.
+    public let startsOn: Date
+    /// The last day.
+    public let endsOn: Date
+    /// The shops trading there.
+    public let shops: [Shop]
+
+    // MARK: Initializers
+
+    public init(
+        slug: String,
+        name: String,
+        venue: String,
+        startsOn: Date,
+        endsOn: Date,
+        shops: [Shop] = []
+    ) {
+        self.slug = slug
+        self.name = name
+        self.venue = venue
+        self.startsOn = startsOn
+        self.endsOn = endsOn
+        self.shops = shops
+    }
+
+}

Packages/Persistence/Sources/Public/Models/ListingFilter.swift

@@ -31,6 +31,8 @@ public struct ListingFilter: Sendable, Equatable {
     public var verifiedShops: Bool
     /// The slug of the one shop to match, or `nil` for all shops.
     public var shop: String?
+    /// The slugs of the shops to match — those trading at an event, say — or `nil` for all shops.
+    public var shops: [String]?
     /// The order of the results.
     public var sort: Sort
 
@@ -51,6 +53,7 @@ public struct ListingFilter: Sendable, Equatable {
         acceptsOffers: Bool = false,
         verifiedShops: Bool = false,
         shop: String? = nil,
+        shops: [String]? = nil,
         sort: Sort = .newest
     ) {
         self.query = query
@@ -67,6 +70,7 @@ public struct ListingFilter: Sendable, Equatable {
         self.acceptsOffers = acceptsOffers
         self.verifiedShops = verifiedShops
         self.shop = shop
+        self.shops = shops
         self.sort = sort
     }
 
@@ -117,6 +121,10 @@ extension ListingFilter {
             return false
         }
 
+        if let shops, !shops.contains(listing.shop.slug) {
+            return false
+        }
+
         if !formats.isEmpty, !formats.contains(listing.format) {
             return false
         }