feat(lenses): enhance content type detection and lens selection logic (#5081)

Co-authored-by: jamesgeorge007 <25279263+jamesgeorge007@users.noreply.github.com>

packages/hoppscotch-common/src/helpers/lenses/lenses.ts

@@ -43,18 +43,54 @@ export function getSuitableLenses(response: HoppRESTResponse): Lens[] {
     (h) => h.key.toLowerCase() === "content-type"
   )
 
+  // If no content type is found, return raw lens as fallback
   if (!contentType) return [rawLens]
 
-  // Check if the response content type includes `text/plain` and the body contains valid JSON
-  if (
-    contentType.value.includes("text/plain") &&
-    response.type === "success" &&
-    isValidJSONResponse(response.body)
-  ) {
-    // Append JSON lens to the list of lenses
-    return [rawLens, jsonLens]
+  // For successful responses, use a smarter approach
+  if (response.type === "success") {
+    // First, get lenses that match the content type
+    const matchingLenses = lenses.filter((lens) =>
+      lens.isSupportedContentType(contentType.value)
+    )
+
+    // For text-based content types, check if content can be parsed as other formats
+    const isTextBased =
+      contentType.value.includes("text/") ||
+      contentType.value.includes("application/javascript") ||
+      contentType.value.includes("application/xml") ||
+      contentType.value.includes("application/xhtml+xml") ||
+      htmlLens.isSupportedContentType(contentType.value)
+
+    if (isTextBased && response.body) {
+      // Check if content is valid JSON
+      if (
+        isValidJSONResponse(response.body) &&
+        !matchingLenses.includes(jsonLens)
+      ) {
+        // Add JSON lens as an additional option, but keep it after the original content type lens
+        // This ensures the original content type lens is selected by default
+        matchingLenses.push(jsonLens)
+      }
+
+      // Add other content type detection here if needed
+      // e.g., check if content is valid XML, HTML, etc.
+    }
+
+    // If no matching lenses found, include all lenses to give user full control
+    if (matchingLenses.length === 0) {
+      return lenses
+    }
+
+    // Always include raw lens for viewing the raw response
+    if (!matchingLenses.includes(rawLens)) {
+      matchingLenses.push(rawLens)
+    }
+
+    // Return matching lenses plus raw lens
+    return matchingLenses
   }
 
+  // For other response types, use the standard content type detection
   const result = []
   for (const lens of lenses) {
     if (lens.isSupportedContentType(contentType.value)) result.push(lens)