Lettore EPUB nativo: ReaderPage (WebView+capitoli+progresso), segno locale in QSettings, sync POST /ajax/bookmark con fallback CSRF, pulsante Leggi nel dettaglio

qml/pages/BookDetailPage.qml

@@ -8,6 +8,8 @@ Page {
     property string coverSource: ""
     property bool downloading: false
     property string downloadError: ""
+    property bool readingNow: false
+    property string readingUrl: ""
 
     SilicaFlickable {
         anchors.fill: parent
@@ -29,6 +31,14 @@ Page {
                 visible: source.length > 0
             }
 
+            Button {
+                anchors.horizontalCenter: parent.horizontalCenter
+                text: "Leggi (EPUB)"
+                visible: page.hasEpubFormat()
+                enabled: !page.downloading
+                onClicked: startReading()
+            }
+
             Label {
                 x: Theme.horizontalPageMargin
                 width: parent.width - 2 * Theme.horizontalPageMargin
@@ -157,6 +167,50 @@ Page {
         return out.trim()
     }
 
+    function hasEpubFormat() {
+        var fmts = bookData.formats
+        if (!fmts)
+            return false
+        for (var i = 0; i < fmts.length; i++)
+            if (String(fmts[i].format).toLowerCase() === "epub")
+                return true
+        return false
+    }
+
+    function firstEpubFormat() {
+        var fmts = bookData.formats
+        if (!fmts)
+            return null
+        for (var i = 0; i < fmts.length; i++)
+            if (String(fmts[i].format).toLowerCase() === "epub")
+                return fmts[i]
+        return null
+    }
+
+    // estrae l'id numerico calibre da un url di download: /opds/download/<id>/<formato>/
+    function extractBookId(u) {
+        var parts = u.split("/")
+        for (var i = 0; i < parts.length - 1; i++)
+            if (parts[i] === "download" && parts[i + 1].length > 0
+                    && !isNaN(parseInt(parts[i + 1])))
+                return parseInt(parts[i + 1])
+        return 0
+    }
+
+    function startReading() {
+        var f = page.firstEpubFormat()
+        if (!f)
+            return
+        var id = page.extractBookId(f.url)
+        if (id <= 0)
+            return
+        page.readingNow = true
+        page.readingUrl = f.url
+        page.downloading = true
+        page.downloadError = ""
+        downloader.download(resolveUrl(f.url), appSettings.bookFilePath(id, "epub"))
+    }
+
     function startDownload(format) {
         if (page.downloading)
             return
@@ -196,11 +250,19 @@ Page {
         onFinished: {
             page.downloading = false
             if (ok) {
+                if (page.readingNow) {
+                    page.readingNow = false
+                    var id = page.extractBookId(page.readingUrl)
+                    pageStack.push(Qt.resolvedUrl("ReaderPage.qml"),
+                                   { epubPath: path, bookId: id, bookFormat: "epub" })
+                    return
+                }
                 page.downloadError = ""
                 page.downloadNotice = "Salvato in " + path
                 hideNoticeTimer.restart()
             } else {
                 page.downloadNotice = ""
+                page.readingNow = false
                 page.downloadError = "Errore: " + error
             }
         }