Add IndexFile and Bestiary index

Author: keybuk

Sources/FifthEdition/Bestiary.swift

@@ -9,6 +9,14 @@
 
 import MemberwiseInit
 
+@MemberwiseInit(.public)
+public struct Bestiary: Equatable, Codable, Sendable {
+    public static let entryBasePath: String = "data/bestiary"
+    public static let indexEntryPath: String = "\(entryBasePath)/index.json"
+
+    public var monster: [Creature] = []
+}
+
 @MemberwiseInit(.public)
 public struct Creature: Equatable, Sendable {
     public enum AbilityScore: Equatable, Sendable {

Sources/FifthEdition/Util.swift

@@ -27,6 +27,11 @@ extension Alignment: Hashable {
     static let any: Self = .all
 }
 
+@MemberwiseInit(.public)
+public struct IndexFile: Equatable, Sendable {
+    public var entries: [String: String] = [:]
+}
+
 public enum Page: Equatable, Hashable, Sendable {
     case number(Int)
     case numeral(String)
@@ -173,6 +178,18 @@ extension Alignment: Codable {
     }
 }
 
+extension IndexFile: Codable {
+    public init(from decoder: any Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        entries = try container.decode([String: String].self)
+    }
+
+    public func encode(to encoder: any Encoder) throws {
+        var container = encoder.singleValueContainer()
+        try container.encode(entries)
+    }
+}
+
 extension Page: Codable {
     public init(from decoder: any Decoder) throws {
         let container = try decoder.singleValueContainer()

Tests/FifthEditionTests/UtilTests.swift

@@ -71,6 +71,31 @@ struct AlignmentCodableTests {
 
 }
 
+struct IndexFileCodableTests {
+
+    @Test("Index file")
+    func index() throws {
+        try testCodable(
+            json: """
+            {
+              "XDMG" : "foo-xdmg.json",
+              "XMM" : "foo-xmm.json",
+              "XPHB" : "foo-xphb.json"
+            }
+            """,
+            value: IndexFile(
+                entries: [
+                    "XDMG": "foo-xdmg.json",
+                    "XMM": "foo-xmm.json",
+                    "XPHB": "foo-xphb.json",
+                ],
+            )
+        )
+
+    }
+
+}
+
 struct PageCodableTests {
 
     @Test("Numeric page")