Reorganize saving, generate feed

CHDataManagement/Page Elements/PostFeedPageNavigation.swift

@@ -0,0 +1,88 @@
+import Foundation
+
+struct PostFeedPageNavigation {
+
+    let language: ContentLanguage
+
+    let currentPage: Int
+
+    let numberOfPages: Int
+
+    init(currentPage: Int, numberOfPages: Int, language: ContentLanguage) {
+        self.currentPage = currentPage
+        self.numberOfPages = numberOfPages
+        self.language = language
+    }
+
+    private func pageLink(_ page: Int) -> String {
+        guard page > 1 else { return "href='/feed'" }
+        return "href='/feed-\(page)'"
+    }
+
+    private func previousText() -> String {
+        switch language {
+        case .english:
+            return "Previous"
+        case .german:
+            return "Zurück"
+        }
+    }
+
+    private func addPreviousButton(to result: inout String) {
+        if currentPage == 1 {
+            // Disable the previous button if we are on the first page
+            result += "<a class='tag prev disabled' href='' aria-label='Previous'>"
+        } else {
+            let link = pageLink(currentPage - 1)
+            result += "<a class='tag prev' \(link) aria-label='Previous'>"
+        }
+        result += "<svg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor'>"
+        result += "<path stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M15 19l-7-7 7-7' />"
+        result += "</svg></a>"
+    }
+
+    private func addNextButton(to result: inout String) {
+        if currentPage == numberOfPages {
+            // Disable the previous button if we are on the first page
+            result += "<a class='tag next disabled' href='' aria-label='Next'>"
+        } else {
+            let link = pageLink(currentPage + 1)
+            result += "<a class='tag next' \(link) aria-label='Next'>"
+        }
+        result += "<svg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor'>"
+        result += "<path stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M9 5l7 7-7 7' />"
+        result += "</svg></a>"
+    }
+
+    private func addLink(page: Int, to result: inout String) {
+        result += "<a class='tag' \(pageLink(page))>\(page)</a>"
+    }
+
+    var content: String {
+        var result = "<div class='pagination'>"
+        addPreviousButton(to: &result)
+        // Add a maximum of two buttons before the current page
+        if currentPage > 2 {
+            addLink(page: currentPage - 2, to: &result)
+        }
+        if currentPage > 1 {
+            addLink(page: currentPage - 1, to: &result)
+        }
+
+        // Add the current page
+        result += "<span class='tag current'>\(currentPage)</span>"
+
+        // Add a maximum of two buttons after the current page
+        if currentPage < numberOfPages {
+            addLink(page: currentPage + 1, to: &result)
+        }
+        if currentPage + 1 < numberOfPages {
+            addLink(page: currentPage + 2, to: &result)
+        }
+
+        addNextButton(to: &result)
+
+        result += "</div>" // Close pagination
+        return result
+    }
+}