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handlers/handlers.go

+package handlers
+
+import (
+    // ... other imports
+    "assignment1/models"
+    "assignment1/services"
+)
+
+func BookCountHandler(w http.ResponseWriter, r *http.Request) {
+    // Parse query parameters for language
+    query := r.URL.Query()
+    language := query.Get("language")
+
+    // Fetch book data from the Gutendex API
+    books, err := services.FetchBooksByLanguage(language)
+    if err != nil {
+        // Handle error
+        http.Error(w, err.Error(), http.StatusInternalServerError)
+        return
+    }
+
+    // Process the books to calculate the book count and author count
+    // ... (Implementation required)
+
+    // Create a response object
+    response := models.GutenbergBookCount{
+        Language: language,
+        // Books: Number of books (to be calculated),
+        // Authors: Number of unique authors (to be calculated),
+        // Fraction: Fraction of books in the language (to be calculated),
+    }
+
+    // Write the response back as JSON
+    w.Header().Set("Content-Type", "application/json")
+    if err := json.NewEncoder(w).Encode(response); err != nil {
+        http.Error(w, err.Error(), http.StatusInternalServerError)
+    }
+}
+
+// ... Other handlers