add beginning person page implementation

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/PeopleApi.kt

@@ -0,0 +1,30 @@
+package com.owenlejeune.tvtime.api.tmdb
+
+import com.owenlejeune.tvtime.api.tmdb.model.DetailPerson
+import com.owenlejeune.tvtime.api.tmdb.model.PersonCreditsResponse
+import com.owenlejeune.tvtime.api.tmdb.model.PersonImageCollection
+import retrofit2.Response
+import retrofit2.http.GET
+import retrofit2.http.Path
+
+interface PeopleApi {
+
+    @GET("person/{id}")
+    suspend fun getPerson(@Path("id") id: Int): Response<DetailPerson>
+
+//    @GET("person/{id}/movie_credits")
+//    suspend fun getMovieCredits(@Path("id") id: Int)
+//
+//    @GET("person/{id}/tv_credits")
+//    suspend fun getTvCredits(@Path("id") id: Int)
+
+    @GET("person/{id}/combined_credits")
+    suspend fun getCredits(@Path("id") id: Int): Response<PersonCreditsResponse>
+
+    @GET("person/{id}/images")
+    suspend fun getImages(@Path("id") id: Int): Response<PersonImageCollection>
+
+//    @GET("persons/{id}/tagged_images")
+//    suspend fun getTaggedImages(@Path("id") id: Int, @Query("page") page: Int = 1): Response<PersonImageCollection>
+
+}

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/PeopleService.kt

@@ -0,0 +1,25 @@
+package com.owenlejeune.tvtime.api.tmdb
+
+import com.owenlejeune.tvtime.api.tmdb.model.DetailPerson
+import com.owenlejeune.tvtime.api.tmdb.model.PersonCreditsResponse
+import com.owenlejeune.tvtime.api.tmdb.model.PersonImageCollection
+import org.koin.core.component.KoinComponent
+import retrofit2.Response
+
+class PeopleService: KoinComponent {
+
+    private val service by lazy { TmdbClient().createPeopleService() }
+
+    suspend fun getPerson(id: Int): Response<DetailPerson> {
+        return service.getPerson(id)
+    }
+
+    suspend fun getCredits(id: Int): Response<PersonCreditsResponse> {
+        return service.getCredits(id)
+    }
+
+    suspend fun getImages(id: Int): Response<PersonImageCollection> {
+        return service.getImages(id)
+    }
+
+}

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/TmdbClient.kt

@@ -33,6 +33,10 @@ class TmdbClient: KoinComponent {
         return client.create(TvApi::class.java)
     }
 
+    fun createPeopleService(): PeopleApi {
+        return client.create(PeopleApi::class.java)
+    }
+
     private inner class TmdbInterceptor: Interceptor {
         override fun intercept(chain: Interceptor.Chain): Response {
             val apiParam = QueryParam("api_key", BuildConfig.TMDB_ApiKey)

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/CastMember.kt

@@ -5,9 +5,9 @@ import com.google.gson.annotations.SerializedName
 class CastMember(
     @SerializedName("character") val character: String,
     @SerializedName("order") val order: Int,
+    @SerializedName("credit_id") val creditId: String,
     id: Int,
-    creditId: String,
     name: String,
     gender: Int,
     profilePath: String?
-): Person(id, creditId, name, gender, profilePath)
+): Person(id, name, gender, profilePath)

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/CrewMember.kt

@@ -5,9 +5,9 @@ import com.google.gson.annotations.SerializedName
 class CrewMember(
     @SerializedName("department") val department: String,
     @SerializedName("job") val job: String,
+    @SerializedName("credit_id") val creditId: String,
     id: Int,
-    creditId: String,
     name: String,
     gender: Int,
     profilePath: String?
-): Person(id, creditId, name, gender, profilePath)
+): Person(id, name, gender, profilePath)

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/DetailCast.kt

@@ -0,0 +1,17 @@
+package com.owenlejeune.tvtime.api.tmdb.model
+
+import com.google.gson.annotations.SerializedName
+
+class DetailCast(
+    @SerializedName("id") val id: Int,
+    @SerializedName("episode_count") val episodeCount: Int,
+    @SerializedName("overview") val overview: String,
+    @SerializedName("name") val name: String,
+    @SerializedName("media_type") val mediaType: String,
+    @SerializedName("poster_path") val posterPath: String?,
+    @SerializedName("first_air_date") val firstAirDate: String,
+    @SerializedName("character") val character: String,
+    @SerializedName("title") val title: String,
+    @SerializedName("adult") val isAdult: Boolean,
+    @SerializedName("release_date") val releaseDate: String
+)

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/DetailCrew.kt

@@ -0,0 +1,18 @@
+package com.owenlejeune.tvtime.api.tmdb.model
+
+import com.google.gson.annotations.SerializedName
+
+class DetailCrew(
+    @SerializedName("id") val id: Int,
+    @SerializedName("department") val department: String,
+    @SerializedName("episode_count") val episodeCount: Int,
+    @SerializedName("job") val job: String,
+    @SerializedName("overview") val overview: String,
+    @SerializedName("name") val name: String,
+    @SerializedName("media_type") val mediaType: String,
+    @SerializedName("first_air_date") val firstAirDate: String,
+    @SerializedName("poster_path") val posterPath: String,
+    @SerializedName("title") val title: String,
+    @SerializedName("adult") val isAdult: Boolean,
+    @SerializedName("release_date") val releaseDate: String
+)

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/DetailPerson.kt

@@ -0,0 +1,16 @@
+package com.owenlejeune.tvtime.api.tmdb.model
+
+import com.google.gson.annotations.SerializedName
+
+class DetailPerson(
+    @SerializedName("birthday") val birthday: String,
+    @SerializedName("known_for_department") val knownFor: String,
+    @SerializedName("deathday") val dateOfDeath: String?,
+    @SerializedName("biography") val biography: String,
+    @SerializedName("place_of_birth") val birthplace: String?,
+    @SerializedName("adult") val isAdult: Boolean,
+    id: Int,
+    name: String,
+    gender: Int,
+    profilePath: String?
+): Person(id, name, gender, profilePath)

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/Person.kt

@@ -4,7 +4,6 @@ import com.google.gson.annotations.SerializedName
 
 open class Person(
     @SerializedName("id") val id: Int,
-    @SerializedName("credit_id") val creditId: String,
     @SerializedName("name") val name: String,
     @SerializedName("gender") val gender: Int,
     @SerializedName("profile_path") val profilePath: String?

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/PersonCreditsResponse.kt

@@ -0,0 +1,8 @@
+package com.owenlejeune.tvtime.api.tmdb.model
+
+import com.google.gson.annotations.SerializedName
+
+class PersonCreditsResponse(
+    @SerializedName("cast") val cast: List<DetailCast>,
+    @SerializedName("crew") val crew: List<DetailCrew>
+)

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/PersonImage.kt

@@ -0,0 +1,10 @@
+package com.owenlejeune.tvtime.api.tmdb.model
+
+import com.google.gson.annotations.SerializedName
+
+class PersonImage(
+    @SerializedName("aspect_ratio") val aspectRatio: Float,
+    @SerializedName("file_path") val filePath: String,
+    @SerializedName("width") val width: Int,
+    @SerializedName("height") val height: Int
+)

app/src/main/java/com/owenlejeune/tvtime/api/tmdb/model/PersonImageCollection.kt

@@ -0,0 +1,7 @@
+package com.owenlejeune.tvtime.api.tmdb.model
+
+import com.google.gson.annotations.SerializedName
+
+class PersonImageCollection(
+    @SerializedName("profiles") val images: List<PersonImage>
+)

app/src/main/java/com/owenlejeune/tvtime/ui/components/Cards.kt

@@ -3,7 +3,6 @@ package com.owenlejeune.tvtime.ui.components
 import androidx.compose.animation.animateContentSize
 import androidx.compose.animation.core.LinearOutSlowInEasing
 import androidx.compose.animation.core.tween
-import androidx.compose.foundation.Image
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -13,14 +12,10 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.*
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
-import coil.compose.rememberImagePainter
-import coil.transform.RoundedCornersTransformation
 import com.owenlejeune.tvtime.R
-import com.owenlejeune.tvtime.extensions.dpToPx
 
 @Composable
 fun ContentCard(
@@ -106,24 +101,19 @@ fun ImageTextCard(
     noDataImage: Int = R.drawable.placeholder,
     placeholder: Int = R.drawable.placeholder,
     titleTextColor: Color = MaterialTheme.colorScheme.onSurfaceVariant,
-    subtitleTextColor: Color = MaterialTheme.colorScheme.onSurfaceVariant
+    subtitleTextColor: Color = MaterialTheme.colorScheme.onSurfaceVariant,
+    onItemClicked: () -> Unit = {}
 ) {
-    val context = LocalContext.current
-    Column(
-        modifier = modifier
-            .padding(end = 12.dp)
-    ) {
-        Image(
-            modifier = Modifier
-                .size(width = 120.dp, height = 180.dp),
-            painter = rememberImagePainter(
-                data = imageUrl ?: noDataImage,
-                builder = {
-                    transformations(RoundedCornersTransformation(5f.dpToPx(context)))
-                    placeholder(placeholder)
-                }
-            ),
-            contentDescription = ""
+    Column(modifier = modifier) {
+        PosterItem(
+            width = 120.dp,
+            height = 180.dp,
+            onClick = onItemClicked,
+            url = imageUrl,
+            noDataImage = noDataImage,
+            placeholder = placeholder,
+            contentDescription = title,
+            elevation = 0.dp
         )
         MinLinesText(
             modifier = Modifier

app/src/main/java/com/owenlejeune/tvtime/ui/components/Posters.kt

@@ -31,6 +31,7 @@ import com.google.accompanist.pager.HorizontalPager
 import com.google.accompanist.pager.rememberPagerState
 import com.owenlejeune.tvtime.R
 import com.owenlejeune.tvtime.api.tmdb.model.ImageCollection
+import com.owenlejeune.tvtime.api.tmdb.model.Person
 import com.owenlejeune.tvtime.api.tmdb.model.TmdbItem
 import com.owenlejeune.tvtime.extensions.dpToPx
 import com.owenlejeune.tvtime.extensions.listItems
@@ -54,6 +55,7 @@ fun PosterGrid(
     ) {
         listItems(mediaList.value) { item ->
             PosterItem(
+                modifier = Modifier.padding(5.dp),
                 mediaItem = item,
                 onClick = onClick
             )
@@ -66,38 +68,86 @@ fun PosterItem(
     modifier: Modifier = Modifier,
     width: Dp = POSTER_WIDTH,
     height: Dp = POSTER_HEIGHT,
-    onClick: (Int) -> Unit = {},
+    onClick: (id: Int) -> Unit = {},
+    elevation: Dp = 8.dp,
     mediaItem: TmdbItem?
 ) {
-    val context = LocalContext.current
-    val poster = mediaItem?.let { TmdbUtils.getFullPosterPath(mediaItem) }
-    Card(
+    PosterItem(
+        modifier = modifier,
+        width = width,
+        height = height,
+        onClick = {
+            mediaItem?.let {
+                onClick(mediaItem.id)
+            }
+        },
+        url = mediaItem?.let { TmdbUtils.getFullPosterPath(mediaItem) },
+        elevation = elevation,
+        contentDescription = mediaItem?.title
+    )
+}
+
+@Composable
+fun PosterItem(
+    modifier: Modifier = Modifier,
+    width: Dp = POSTER_WIDTH,
+    height: Dp = POSTER_HEIGHT,
+    onClick: (id: Int) -> Unit = {},
+    elevation: Dp = 8.dp,
+    person: Person?
+) {
+    PosterItem(
+        modifier = modifier,
+        width = width,
+        height = height,
+        onClick = {
+            person?.let {
+                onClick(person.id)
+            }
+        },
+        url = person?.let { TmdbUtils.getFullPersonImagePath(person) },
         elevation = 8.dp,
+        contentDescription = person?.name
+    )
+}
+
+@Composable
+fun PosterItem(
+    url: String?,
+    modifier: Modifier = Modifier,
+    width: Dp = POSTER_WIDTH,
+    height: Dp = POSTER_HEIGHT,
+    onClick: () -> Unit = {},
+    noDataImage: Int = R.drawable.placeholder,
+    placeholder: Int = R.drawable.placeholder,
+    elevation: Dp = 8.dp,
+    contentDescription: String?
+) {
+    val context = LocalContext.current
+    Card(
+        elevation = elevation,
         modifier = modifier
-            .size(width = width, height = height)
-            .padding(5.dp),
+            .size(width = width, height = height),
         shape = RoundedCornerShape(5.dp)
     ) {
         Image(
-            painter = if (mediaItem != null) {
+            painter = if (url != null) {
                 rememberImagePainter(
-                    data = poster,
+                    data = url ?: noDataImage,
                     builder = {
                         transformations(RoundedCornersTransformation(5f.dpToPx(context)))
-                        placeholder(R.drawable.placeholder)
+                        placeholder(placeholder)
                     }
                 )
             } else {
                 rememberImagePainter(ContextCompat.getDrawable(context, R.drawable.placeholder))
             },
-            contentDescription = mediaItem?.title,
+            contentDescription = contentDescription,
             modifier = Modifier
                 .size(width = width, height = height)
-                .clickable {
-                    mediaItem?.let {
-                        onClick(mediaItem.id)
-                    }
-                }
+                .clickable(
+                    onClick = onClick
+                )
         )
     }
 }

app/src/main/java/com/owenlejeune/tvtime/ui/navigation/Routes.kt

@@ -11,6 +11,7 @@ import androidx.navigation.navArgument
 import com.owenlejeune.tvtime.ui.screens.DetailView
 import com.owenlejeune.tvtime.ui.screens.MainAppView
 import com.owenlejeune.tvtime.ui.screens.MediaViewType
+import com.owenlejeune.tvtime.ui.screens.PersonDetailView
 import com.owenlejeune.tvtime.ui.screens.tabs.bottom.FavouritesTab
 import com.owenlejeune.tvtime.ui.screens.tabs.bottom.MediaTab
 import com.owenlejeune.tvtime.ui.screens.tabs.bottom.SettingsTab
@@ -36,11 +37,19 @@ fun MainNavigationRoutes(navController: NavHostController, displayUnderStatusBar
         ) { navBackStackEntry ->
             displayUnderStatusBar.value = true
             val args = navBackStackEntry.arguments
+            val mediaType = args?.getSerializable(NavConstants.TYPE_KEY) as MediaViewType
+            if (mediaType != MediaViewType.PERSON) {
                 DetailView(
                     appNavController = navController,
-                itemId = args?.getInt(NavConstants.ID_KEY),
-                type = args?.getSerializable(NavConstants.TYPE_KEY) as MediaViewType
+                    itemId = args.getInt(NavConstants.ID_KEY),
+                    type = mediaType
                 )
+            } else {
+                PersonDetailView(
+                    appNavController = navController,
+                    personId = args.getInt(NavConstants.ID_KEY)
+                )
+            }
         }
     }
 }

app/src/main/java/com/owenlejeune/tvtime/ui/screens/DetailView.kt

@@ -27,10 +27,12 @@ import androidx.navigation.NavController
 import com.owenlejeune.tvtime.R
 import com.owenlejeune.tvtime.api.tmdb.DetailService
 import com.owenlejeune.tvtime.api.tmdb.MoviesService
+import com.owenlejeune.tvtime.api.tmdb.PeopleService
 import com.owenlejeune.tvtime.api.tmdb.TvService
 import com.owenlejeune.tvtime.api.tmdb.model.*
 import com.owenlejeune.tvtime.extensions.listItems
 import com.owenlejeune.tvtime.ui.components.*
+import com.owenlejeune.tvtime.ui.navigation.MainNavItem
 import com.owenlejeune.tvtime.utils.TmdbUtils
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
@@ -46,6 +48,7 @@ fun DetailView(
     val service = when(type) {
         MediaViewType.MOVIE -> MoviesService()
         MediaViewType.TV -> TvService()
+        else -> throw IllegalArgumentException("Media type given: ${type}, \n     expected one of MediaViewType.MOVIE, MediaViewType.TV") // shouldn't happen
     }
 
     val mediaItem = remember { mutableStateOf<DetailedItem?>(null) }
@@ -92,7 +95,8 @@ fun DetailView(
                 start.linkTo(posterImage.end, margin = 8.dp)
                 end.linkTo(parent.end, margin = 16.dp)
             },
-            mediaItem = mediaItem
+            title = mediaItem.value?.title ?: ""
+//            mediaItem = mediaItem
         )
 
         BackButton(
@@ -111,11 +115,100 @@ fun DetailView(
             itemId = itemId,
             mediaItem = mediaItem,
             service = service,
-            mediaType = type
+            mediaType = type,
+            appNavController = appNavController
         )
     }
 }
 
+@Composable
+fun PersonDetailView(
+    appNavController: NavController,
+    personId: Int?
+) {
+    val person = remember { mutableStateOf<DetailPerson?>(null) }
+    personId?.let {
+        if (person.value == null) {
+            fetchPerson(personId, person)
+        }
+    }
+
+    val scrollState = rememberScrollState()
+
+    ConstraintLayout(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(color = MaterialTheme.colorScheme.background)
+            .verticalScroll(state = scrollState)
+    ) {
+        val (
+            backButton, backdropImage, profileImage, nameText, contentColumn
+        ) = createRefs()
+
+        BackdropImage(
+            modifier = Modifier
+                .fillMaxWidth()
+                .height(280.dp)
+                .constrainAs(backdropImage) {
+                    top.linkTo(parent.top)
+                    start.linkTo(parent.start)
+                    end.linkTo(parent.end)
+                }
+        )
+
+        PosterItem(
+            person = person.value,
+            modifier = Modifier
+                .constrainAs(profileImage) {
+                    bottom.linkTo(backdropImage.bottom)
+                    start.linkTo(parent.start, margin = 16.dp)
+                    top.linkTo(backButton.bottom)
+                }
+        )
+
+        TitleText(
+            modifier = Modifier.constrainAs(nameText) {
+                bottom.linkTo(profileImage.bottom)
+                start.linkTo(profileImage.end, margin = 8.dp)
+                end.linkTo(parent.end, margin = 16.dp)
+            },
+            title = person.value?.name ?: ""
+        )
+
+        BackButton(
+            modifier = Modifier.constrainAs(backButton) {
+                top.linkTo(parent.top)
+                start.linkTo(parent.start, 12.dp)
+                bottom.linkTo(profileImage.top)
+            },
+            appNavController = appNavController
+        )
+
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .wrapContentHeight()
+                .padding(start = 16.dp, end = 16.dp, bottom = 16.dp)
+                .constrainAs(contentColumn) {
+                    top.linkTo(backdropImage.bottom)//, margin = 8.dp)
+                },
+            verticalArrangement = Arrangement.spacedBy(16.dp)
+        ) {
+            ContentCard {
+                Text(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .wrapContentHeight()
+                        .padding(vertical = 12.dp, horizontal = 16.dp),
+                    text = person.value?.biography ?: "",
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    style = MaterialTheme.typography.bodyMedium
+                )
+            }
+        }
+    }
+}
+
 @Composable
 private fun Backdrop(modifier: Modifier, mediaItem: MutableState<DetailedItem?>) {
 //        val images = remember { mutableStateOf<ImageCollection?>(null) }
@@ -134,9 +227,9 @@ private fun Backdrop(modifier: Modifier, mediaItem: MutableState<DetailedItem?>)
 }
 
 @Composable
-private fun TitleText(modifier: Modifier, mediaItem: MutableState<DetailedItem?>) {
+private fun TitleText(modifier: Modifier, title: String/*mediaItem: MutableState<DetailedItem?>*/) {
     Text(
-        text = mediaItem.value?.title ?: "",
+        text = title,//mediaItem.value?.title ?: "",
         color = MaterialTheme.colorScheme.primary,
         modifier = modifier
             .padding(start = 16.dp, end = 16.dp)
@@ -171,7 +264,8 @@ private fun ContentColumn(
     itemId: Int?,
     mediaItem: MutableState<DetailedItem?>,
     service: DetailService,
-    mediaType: MediaViewType
+    mediaType: MediaViewType,
+    appNavController: NavController
 ) {
     Column(
         modifier = modifier
@@ -190,7 +284,7 @@ private fun ContentColumn(
             OverviewCard(mediaItem = mediaItem)
         }
 
-        CastCard(itemId = itemId, service = service)
+        CastCard(itemId = itemId, service = service, appNavController = appNavController)
 
         SimilarContentCard(itemId = itemId, service = service)
         
@@ -296,7 +390,7 @@ private fun OverviewCard(mediaItem: MutableState<DetailedItem?>, modifier: Modif
 }
 
 @Composable
-private fun CastCard(itemId: Int?, service: DetailService, modifier: Modifier = Modifier) {
+private fun CastCard(itemId: Int?, service: DetailService, appNavController: NavController, modifier: Modifier = Modifier) {
     val castAndCrew = remember { mutableStateOf<CastAndCrew?>(null) }
     itemId?.let {
         if (castAndCrew.value == null) {
@@ -312,18 +406,19 @@ private fun CastCard(itemId: Int?, service: DetailService, modifier: Modifier =
     ) {
         LazyRow(modifier = Modifier
                 .fillMaxWidth()
-            .padding(12.dp)
+                .padding(12.dp),
+            horizontalArrangement = Arrangement.spacedBy(4.dp)
         ) {
             items(castAndCrew.value?.cast?.size ?: 0) { i ->
                 val castMember = castAndCrew.value!!.cast[i]
-                CastCrewCard(person = castMember)
+                CastCrewCard(appNavController = appNavController, person = castMember)
             }
         }
     }
 }
 
 @Composable
-private fun CastCrewCard(person: Person) {
+private fun CastCrewCard(appNavController: NavController, person: Person) {
     ImageTextCard(
         title = person.name,
         modifier = Modifier
@@ -337,7 +432,12 @@ private fun CastCrewCard(person: Person) {
         imageUrl = TmdbUtils.getFullPersonImagePath(person),
         noDataImage = R.drawable.no_person_photo,
         titleTextColor = MaterialTheme.colorScheme.onPrimary,
-        subtitleTextColor = Color.Unspecified
+        subtitleTextColor = Color.Unspecified,
+        onItemClicked = {
+            appNavController.navigate(
+                "${MainNavItem.DetailView.route}/${MediaViewType.PERSON}/${person.id}"
+            )
+        }
     )
 }
 
@@ -513,3 +613,14 @@ private fun fetchVideos(id: Int, service: DetailService, videoResponse: MutableS
         }
     }
 }
+
+private fun fetchPerson(id: Int, person: MutableState<DetailPerson?>) {
+    CoroutineScope(Dispatchers.IO).launch {
+        val result = PeopleService().getPerson(id)
+        if (result.isSuccessful) {
+            withContext(Dispatchers.Main) {
+                person.value = result.body()
+            }
+        }
+    }
+}

app/src/main/java/com/owenlejeune/tvtime/ui/screens/MediaViewType.kt

@@ -2,5 +2,6 @@ package com.owenlejeune.tvtime.ui.screens
 
 enum class MediaViewType {
     MOVIE,
-    TV
+    TV,
+    PERSON
 }

app/src/main/java/com/owenlejeune/tvtime/ui/screens/tabs/bottom/MediaTab.kt

@@ -27,6 +27,7 @@ fun MediaTab(appNavController: NavHostController, mediaType: MediaViewType) {
         val tabs = when (mediaType) {
             MediaViewType.MOVIE -> MainTabNavItem.MovieItems
             MediaViewType.TV -> MainTabNavItem.TvItems
+            else -> throw IllegalArgumentException("Media type given: ${mediaType}, \n     expected one of MediaViewType.MOVIE, MediaViewType.TV") // shouldn't happen
         }
         val pagerState = rememberPagerState()
         Tabs(tabs = tabs, pagerState = pagerState)
@@ -44,6 +45,7 @@ fun MediaTabContent(appNavController: NavHostController, mediaType: MediaViewTyp
     val service: HomePageService = when(mediaType) {
         MediaViewType.MOVIE -> MoviesService()
         MediaViewType.TV -> TvService()
+        else -> throw IllegalArgumentException("Media type given: ${mediaType}, \n     expected one of MediaViewType.MOVIE, MediaViewType.TV") // shouldn't happen
     }
     PosterGrid(
         fetchMedia =  { mediaList ->