Canteen adapter now tells the user when no offers are available for a given day

app/src/main/java/com/denizk0461/studip/adapter/CanteenOfferItemAdapter.kt

@@ -4,6 +4,7 @@ import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.appcompat.content.res.AppCompatResources
 import androidx.recyclerview.widget.RecyclerView
+import com.denizk0461.studip.R
 import com.denizk0461.studip.databinding.ItemCanteenBinding
 import com.denizk0461.studip.databinding.ItemCanteenLineBinding
 import com.denizk0461.studip.databinding.ItemIconBinding
@@ -44,11 +45,44 @@ class CanteenOfferItemAdapter(
     // Returns the amount of offers for a given canteen and day
     override fun getItemCount(): Int = offers.size
 
-    // TODO inflate a view saying "no events" if none are available for a given day
     override fun onBindViewHolder(holder: OfferViewHolder, position: Int) {
         // Retrieve item for current position
         val currentItem = offers[position]
 
+        // If an item has been added to mark that there are no offers available, tell the user
+        if (currentItem.category == "NO\$ITEMS") {
+
+            // Set the text to "No offers" (localised)
+            holder.binding.textCategory.text =
+                holder.binding.root.context.getString(R.string.canteen_no_offer_header)
+
+            // Inflate a single line without binding it to the line container
+            val line = ItemCanteenLineBinding.inflate(
+                LayoutInflater.from(holder.binding.root.context),
+            )
+
+            // Set content to tell the user that no offers are available (localised)
+            line.textContent.text =
+                holder.binding.root.context.getString(R.string.canteen_no_offer_desc)
+
+            // Inflate a new icon holder
+            val img = ItemIconBinding.inflate(LayoutInflater.from(holder.binding.root.context))
+
+            // Set a cross icon
+            img.imageView.setImageDrawable(
+                AppCompatResources.getDrawable(
+                    holder.binding.root.context,
+                    DietaryPreferences.indexToDrawable[11]!!,
+                )
+            )
+
+            // Bind the new icon to the line view
+            line.imageViewContainer.addView(img.root)
+
+            // Bind the new line to the line container
+            holder.binding.lineContainer.addView(line.root)
+
+        } else { // Proceed normally if items are available
             // Set category text / header of the item
             holder.binding.textCategory.text = currentItem.category
 
@@ -108,6 +142,7 @@ class CanteenOfferItemAdapter(
                 holder.binding.lineContainer.addView(line.root)
             }
         }
+    }
 
     /**
      * Adds a star to mark allergens present in an offer. Allergens will be displayed as a star '*'

app/src/main/java/com/denizk0461/studip/data/StwParser.kt

@@ -1,5 +1,6 @@
 package com.denizk0461.studip.data
 
+import android.util.Log
 import com.denizk0461.studip.db.AppRepository
 import com.denizk0461.studip.model.*
 import org.jsoup.Jsoup
@@ -24,6 +25,9 @@ class StwParser {
     // Unique primary key value for the item elements
     private var itemId = 0
 
+    // Determine whether there are offers for a given date
+    private var dateHasItems = false
+
     /**
      * Parses through a list of canteen plans and saves them to persistent storage.
      *
@@ -137,11 +141,18 @@ class StwParser {
              */
             repo.insert(OfferDate(dateId, date))
 
+            dateHasItems = false
+
             // Iterate through all categories offered on a given day
             dayPlan.getElementsByClass("food-category").forEach { category ->
+
+                dateHasItems = true
+
                 // Retrieve the category text
                 val categoryTitle = category.getElementsByClass("category-name")[0].text()
 
+                Log.d("AAA?", "$date on $categoryTitle")
+
                 // Save the category to persistent storage
                 repo.insert(OfferCategory(categoryId, dateId, canteenId, categoryTitle))
 
@@ -184,16 +195,38 @@ class StwParser {
                             )
                         )
 
-                        // Increment the item ID to avoid overriding
+                        // Increment the item ID to avoid conflict
                         itemId += 1
                     }
-                // Increment the category ID to avoid overriding
+                // Increment the category ID to avoid conflict
                 categoryId += 1
             }
-            // Increment the date ID to avoid overriding
+
+            /*
+             * If no items were found for the day, insert items that will tell the user that nothing
+             * is available. Text will then be handled in the adapter class.
+             */
+            if (!dateHasItems) {
+                repo.insert(OfferCategory(categoryId, dateId, canteenId, "NO\$ITEMS"))
+                repo.insert(
+                    OfferItem(
+                        itemId,
+                        categoryId,
+                        title = "NO\$ITEMS",
+                        price = "",
+                        dietaryPreferences = "..........",
+                        allergens = "",
+                    )
+                )
+                // Increment the IDs to avoid conflict
+                categoryId += 1
+                itemId += 1
+            }
+
+            // Increment the date ID to avoid conflict
             dateId += 1
         }
-        // Increment the canteen ID to avoid overriding
+        // Increment the canteen ID to avoid conflict
         canteenId += 1
     }
 

app/src/main/java/com/denizk0461/studip/model/DietaryPreferences.kt

@@ -41,6 +41,7 @@ enum class DietaryPreferences(val value: String) {
             8 to R.drawable.carrot,
             9 to R.drawable.deer,
             10 to R.drawable.circle,
+            11 to R.drawable.cross,
         )
 
         /**

app/src/main/res/values-de/strings.xml

@@ -20,6 +20,9 @@
     <string name="sheet_schedule_update_lecturers_hint">Dozierende(r)</string>
     <string name="sheet_schedule_update_room_hint">Raum</string>
 
+    <string name="canteen_no_offer_header">Kein Angebot</string>
+    <string name="canteen_no_offer_desc">Für diesen Tag sind keine Angebote vorhanden</string>
+
     <string name="sheet_licences_header">Lizenzen</string>
 
     <string name="title_schedule">Dein Stundenplan</string>

app/src/main/res/values/strings.xml

@@ -21,6 +21,9 @@
     <string name="sheet_schedule_update_room_hint">Room</string>
     <string name="sheet_schedule_update_timeslot_middle" translatable="false">–</string>
 
+    <string name="canteen_no_offer_header">No offers</string>
+    <string name="canteen_no_offer_desc">There are no offers available for this day</string>
+
     <string name="sheet_licences_header">Licences</string>
     <string name="sheet_licences_content" translatable="false">Android developer resources provided by Google.\nhttps://developer.android.com/\n\nCrash reporting provided by Google.\nhttps://firebase.google.com/products/crashlytics/\n\nDesign guidelines, icons, and colour palette provided by Google.\nhttps://m3.material.io/\n\nAdditional icons provided by Flaticon.\nhttps://www.flaticon.com/\n\nWeb scraping functionality provided by Jonathan Hedley.\nhttps://jhy.io/ | https://jsoup.org/</string>