feat(notifications): Fetch corresponding invitations

app/src/main/java/com/p_vacho/neat_calendar/activities/NotificationsActivity.kt

@@ -14,6 +14,7 @@ import com.p_vacho.neat_calendar.MyApplication
 import com.p_vacho.neat_calendar.R
 import com.p_vacho.neat_calendar.adapters.NotificationAdapter
 import com.p_vacho.neat_calendar.api.RetrofitClient
+import com.p_vacho.neat_calendar.api.models.InvitationResponse
 import com.p_vacho.neat_calendar.api.models.NotificationResponse
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -24,6 +25,7 @@ class NotificationsActivity : AppCompatActivity() {
     private lateinit var btnBack: ImageButton
 
     private lateinit var notifications: MutableList<NotificationResponse>
+    private lateinit var invitations: MutableMap<String, InvitationResponse> // invitation id -> invitation
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -43,7 +45,10 @@ class NotificationsActivity : AppCompatActivity() {
 
         lifecycleScope.launch {
             notifications = fetchNotifications().toMutableList()
-            rvNotifications.adapter = NotificationAdapter(notifications, ::handleNotificationAction, ::handleNotificationClick)
+            invitations = fetchInvitations().toMutableMap()
+            rvNotifications.adapter = NotificationAdapter(notifications, ::handleNotificationAction, ::handleNotificationClick) {
+                notification -> invitations[notification.data]
+            }
         }
 
         btnBack.setOnClickListener { finish() }
@@ -64,6 +69,19 @@ class NotificationsActivity : AppCompatActivity() {
         return notifications
     }
 
+    private suspend fun fetchInvitations(): Map<String, InvitationResponse> {
+        val userId = (application as MyApplication).tokenManager.userId
+        if (userId == null) {
+            finish()
+            return emptyMap()
+        }
+
+        val fetchedInvitations = withContext(Dispatchers.IO) {
+            RetrofitClient.invitationService.getIncomingInvitations(userId)
+        }
+        return fetchedInvitations.associateBy { it.id }
+    }
+
     private fun handleNotificationAction(notification: NotificationResponse, action: NotificationAdapter.Action, position: Int) {
         when (action) {
             NotificationAdapter.Action.ACCEPT -> {

app/src/main/java/com/p_vacho/neat_calendar/adapters/NotificationAdapter.kt

@@ -3,11 +3,11 @@ package com.p_vacho.neat_calendar.adapters
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.Button
 import android.widget.ImageButton
 import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
 import com.p_vacho.neat_calendar.R
+import com.p_vacho.neat_calendar.api.models.InvitationResponse
 import com.p_vacho.neat_calendar.api.models.NotificationResponse
 import java.time.Duration
 import java.time.OffsetDateTime
@@ -17,6 +17,7 @@ class NotificationAdapter(
     private val notifications: MutableList<NotificationResponse>,
     private val onActionClick: (NotificationResponse, Action, Int) -> Unit,
     private val onNotificationClick: (NotificationResponse, Int) -> Unit,
+    private val getInvitationData: (NotificationResponse) -> InvitationResponse?,
 ) : RecyclerView.Adapter<NotificationAdapter.NotificationViewHolder>() {
 
     enum class Action {
@@ -42,8 +43,6 @@ class NotificationAdapter(
     override fun onBindViewHolder(holder: NotificationViewHolder, position: Int) {
         val notification = notifications[position]
 
-        holder.message.text = notification.message
-
         // Format and set the creation time
         val formattedTime = formatNotificationTime(notification.created_at)
         holder.notificationTime.text = formattedTime
@@ -53,7 +52,21 @@ class NotificationAdapter(
 
         // Handle invitation actions
         if (notification.event_type == "invitation") {
+            val invitation = getInvitationData(notification)
+
+            // TODO: Consider fetching the user names here to show
+            // TODO: Localize
+            if (invitation != null) {
+                if (notification.message == "new-invitation") {
+                    holder.message.setText("You have received an event invitation")
+                } else if (notification.message == "invitation-accepted") {
+                    holder.message.setText("Your event invitation has been accepted")
+                } else if (notification.message == "invitation-declined") {
+                    holder.message.setText("Your event invitation has been declined")
+                }
+
                 holder.invitationActions.visibility = View.VISIBLE
+
                 holder.acceptButton.setOnClickListener {
                     onActionClick(notification, Action.ACCEPT, position)
                 }
@@ -63,7 +76,22 @@ class NotificationAdapter(
                 holder.viewEventButton.setOnClickListener {
                     onActionClick(notification, Action.VIEW_EVENT, position)
                 }
+
             } else {
+                if (notification.message == "new-invitation") {
+                    holder.message.setText("You have received an event invitation [invitation deleted]")
+                } else if (notification.message == "invitation-accepted") {
+                    holder.message.setText("Your event invitation has been accepted [invitation deleted]")
+                } else if (notification.message == "invitation-declined") {
+                    holder.message.setText("Your event invitation has been declined [invitation deleted]")
+                }
+
+                holder.invitationActions.visibility = View.GONE
+            }
+
+        } else {
+            holder.message.text = notification.message
+
             holder.invitationActions.visibility = View.GONE
         }
 

app/src/main/java/com/p_vacho/neat_calendar/api/models/InvitationModels.kt

@@ -1,6 +1,18 @@
 package com.p_vacho.neat_calendar.api.models
 
+import java.time.OffsetDateTime
+
 data class InvitationRequest(
     val event_id: String,
     val invitee_id: String,
 )
+
+data class InvitationResponse(
+    val id: String,
+    val invitor_id: String,
+    val invitee_id: String,
+    val event_id: String,
+    val status: String, // "accepted" / "declined" / "pending"
+    val sent_at: OffsetDateTime,
+    val responded_at: OffsetDateTime?,
+)

app/src/main/java/com/p_vacho/neat_calendar/api/services/InvitationsService.kt

@@ -1,10 +1,29 @@
 package com.p_vacho.neat_calendar.api.services
 
 import com.p_vacho.neat_calendar.api.models.InvitationRequest
+import com.p_vacho.neat_calendar.api.models.InvitationResponse
 import retrofit2.http.Body
+import retrofit2.http.GET
 import retrofit2.http.POST
+import retrofit2.http.Path
 
 interface InvitationsService {
     @POST("invitations")
-    suspend fun createInvitation(@Body invitationData: InvitationRequest)
+    suspend fun createInvitation(@Body invitationData: InvitationRequest): InvitationResponse
+
+    @GET("invitations/{invitation_id}")
+    suspend fun getInvitation(@Path("invitation_id") invitiationId: String): InvitationResponse
+
+    @GET("users/{user_id}/invitations")
+    suspend fun getInvitations(@Path("user_id") userId: String): List<InvitationResponse>
+
+    @GET("users/{user_id}/invitations/incoming")
+    suspend fun getIncomingInvitations(@Path("user_id") userId: String): List<InvitationResponse>
+
+    @POST("invitations/{invitation_id}/accept")
+    suspend fun acceptInvitation(@Path("invitation_id") invitationId: String): Unit
+
+    @POST("invitations/{invitation_id}/decline")
+    suspend fun declineInvitation(@Path("invitation_id") invitationId: String): Unit
+
 }