Fix PublicationService.get() (#513)

Author: mickael-menu

Sources/Shared/Publication/Publication.swift

@@ -6,6 +6,7 @@
 
 import CoreServices
 import Foundation
+import ReadiumInternal
 
 /// Shared model for a Readium Publication.
 public class Publication: Closeable, Loggable {
@@ -90,8 +91,10 @@ public class Publication: Closeable, Loggable {
 
     /// Returns the resource targeted by the given `href`.
     public func get<T: URLConvertible>(_ href: T) -> Resource? {
-        // Try first the original href and falls back to href without query and fragment.
-        container[href] ?? container[href.anyURL.removingQuery().removingFragment()]
+        services.first { $0.get(href) }
+            // Try first the original href and falls back to href without query and fragment.
+            ?? container[href]
+            ?? container[href.anyURL.removingQuery().removingFragment()]
     }
 
     /// Closes any opened resource associated with the `Publication`, including `services`.

Sources/Shared/Publication/Services/Cover/GeneratedCoverService.swift

@@ -43,8 +43,8 @@ public final class GeneratedCoverService: CoverService {
 
     public var links: [Link] { [coverLink] }
 
-    public func get(link: Link) -> Resource? {
-        guard link.href == coverLink.href else {
+    public func get<T>(_ href: T) -> (any Resource)? where T: URLConvertible {
+        guard href.anyURL.isEquivalentTo(coverLink.url()) else {
             return nil
         }
 

Sources/Shared/Publication/Services/Positions/PositionsService.swift

@@ -33,8 +33,8 @@ private let positionsLink = Link(
 public extension PositionsService {
     var links: [Link] { [positionsLink] }
 
-    func get(link: Link) -> Resource? {
-        guard link.href == positionsLink.href else {
+    func get<T>(_ href: T) -> (any Resource)? where T: URLConvertible {
+        guard href.anyURL.isEquivalentTo(positionsLink.url()) else {
             return nil
         }
         return PositionsResource(positions: positions)

Sources/Shared/Publication/Services/PublicationService.swift

@@ -31,14 +31,17 @@ public protocol PublicationService: Closeable {
     ///
     /// Called by `Publication.get()` for each request.
     ///
-    /// - Returns: The Resource containing the response, or null if the service doesn't recognize
-    ///   this request.
-    func get(link: Link) -> Resource?
+    /// - Returns: The Resource containing the response, or null if the service
+    ///   doesn't recognize this request.
+    func get<T: URLConvertible>(_ href: T) -> Resource?
 }
 
 public extension PublicationService {
     var links: [Link] { [] }
 
+    func get<T: URLConvertible>(_ href: T) -> Resource? { nil }
+
+    @available(*, unavailable, message: "Use get(URLConvertible) instead")
     func get(link: Link) -> Resource? { nil }
 }
 

Tests/SharedTests/Publication/Services/Content Protection/ContentProtectionServiceTests.swift

@@ -11,7 +11,7 @@ class ContentProtectionServiceTests: XCTestCase {
     func testGetUnknown() {
         let service = TestContentProtectionService()
 
-        let resource = service.get(link: Link(href: "/unknown"))
+        let resource = service.get(AnyURL(string: "/unknown")!)
 
         XCTAssertNil(resource)
     }
@@ -93,11 +93,11 @@ struct TestContentProtectionService: ContentProtectionService {
     var name: LocalizedString? = nil
 
     func getCopy(text: String, peek: Bool) throws -> Resource {
-        try XCTUnwrap(get(link: Link(href: "~readium/rights/copy?text=\(text)&peek=\(peek)")))
+        try XCTUnwrap(get(AnyURL(string: "~readium/rights/copy?text=\(text)&peek=\(peek)")!))
     }
 
     func getPrint(pageCount: Int, peek: Bool) throws -> Resource {
-        try XCTUnwrap(get(link: Link(href: "~readium/rights/print?pageCount=\(pageCount)&peek=\(peek)")))
+        try XCTUnwrap(get(AnyURL(string: "~readium/rights/print?pageCount=\(pageCount)&peek=\(peek)")!))
     }
 }
 

Tests/SharedTests/Publication/Services/Cover/GeneratedCoverServiceTests.swift

@@ -29,7 +29,7 @@ class GeneratedCoverServiceTests: XCTestCase {
             GeneratedCoverService(cover: cover),
             GeneratedCoverService(makeCover: { .success(self.cover) }),
         ] {
-            let resource = try XCTUnwrap(service.get(link: Link(href: "~readium/cover")))
+            let resource = try XCTUnwrap(service.get(AnyURL(string: "~readium/cover")!))
             let result = await resource.read().map(UIImage.init)
             AssertImageEqual(result, .success(cover))
         }

Tests/SharedTests/Publication/Services/Positions/PositionsServiceTests.swift

@@ -123,7 +123,7 @@ class PositionsServiceTests: XCTestCase {
     func testGetPositions() async throws {
         let service = TestPositionsService(positions)
 
-        let resource = service.get(link: Link(href: "~readium/positions"))
+        let resource = service.get(AnyURL(string: "~readium/positions")!)
 
         let result = try await resource?.readAsString().get()
         XCTAssertEqual(
@@ -137,7 +137,7 @@ class PositionsServiceTests: XCTestCase {
     func testGetUnknown() {
         let service = TestPositionsService(positions)
 
-        let resource = service.get(link: Link(href: "/unknown"))
+        let resource = service.get(AnyURL(string: "/unknown")!)
 
         XCTAssertNil(resource)
     }