Fix reportLink nil handling to prevent crashes

Co-authored-by: graycreate <5203798+graycreate@users.noreply.github.com>

Author: Copilot

V2er/State/DataFlow/Actions/FeedDetailActions.swift

@@ -143,9 +143,15 @@ struct FeedDetailActions {
         func execute(in store: Store) async {
             Toast.show("举报中")
             let state = store.appState.feedDetailStates[id]!
+            
+            guard let reportLink = state.model.reportLink, !reportLink.isEmpty else {
+                Toast.show("无法举报此主题")
+                dispatch(ReportTopicDone(id: id, reported: false))
+                return
+            }
 
             let result: APIResult<DailyInfo> = await APIService.shared
-                .htmlGet(endpoint: .general(url: state.model.reportLink!),
+                .htmlGet(endpoint: .general(url: reportLink),
                          requestHeaders: Headers.TINY_REFERER)
             var reported = false
             if case let .success(result) = result {

V2er/State/DataFlow/Model/FeedDetailInfo.swift

@@ -258,6 +258,8 @@ struct FeedDetailInfo: BaseModel {
             let sIndex = rawReportUrl.index(of: "/report/topic/")!
             let eIndex = rawReportUrl.lastIndex(of: "'")!
             self.reportLink = String(rawReportUrl[sIndex..<eIndex])
+        } else {
+            self.reportLink = .empty
         }
 
         self.hasReported = root.pick("div.content div.box div.inner span.fade")

V2er/View/FeedDetail/FeedDetailPage.swift

@@ -232,13 +232,14 @@ struct FeedDetailPage: StateView, KeyboardReadable, InstanceIdentifiable {
                         Label("忽略", systemImage: "exclamationmark.octagon")
                     }
                     let reported = state.model.hasReported ?? false
+                    let canReport = !(state.model.reportLink?.isEmpty ?? true)
                     Button {
                         replyIsFocused = false
                         dispatch(FeedDetailActions.ReportTopic(id: id))
                     } label: {
                         Label(reported ? "已举报" : "举报", systemImage: "person.crop.circle.badge.exclamationmark")
                     }
-                    .disabled(reported)
+                    .disabled(reported || !canReport)
 
                     Divider()
 

V2erTests/V2erTests.swift

@@ -13,7 +13,7 @@ class V2erTests: XCTestCase {
 
     override func setUpWithError() throws {
         // Put setup code here. This method is called before the invocation of each test method in the class.
-        13.5}
+    }
 
     override func tearDownWithError() throws {
         // Put teardown code here. This method is called after the invocation of each test method in the class.
@@ -23,6 +23,16 @@ class V2erTests: XCTestCase {
         // This is an example of a functional test case.
         // Use XCTAssert and related functions to verify your tests produce the correct results.
     }
+    
+    func testReportLinkHandling() throws {
+        // Test that FeedDetailInfo correctly handles empty reportLink
+        var feedDetailInfo = FeedDetailInfo()
+        
+        // When reportLink is set to empty, it should not be nil
+        feedDetailInfo.reportLink = .empty
+        XCTAssertNotNil(feedDetailInfo.reportLink)
+        XCTAssertTrue(feedDetailInfo.reportLink!.isEmpty)
+    }
 
     func testPerformanceExample() throws {
         // This is an example of a performance test case.