Экран создания продукта готов, теперь его надо переделать так чтобы он работал и для редактирования

app/src/main/java/com/example/shawarma/screens/MainNavBar.kt

@@ -17,6 +17,7 @@ import com.example.shawarma.screens.cart.CartScreen
 import com.example.shawarma.screens.discount.DiscountScreen
 import com.example.shawarma.screens.home.HomeScreen
 import com.example.shawarma.screens.orders.OrdersScreen
+import com.example.shawarma.screens.products.ProductScreen
 import com.example.shawarma.screens.products.ProductsScreen
 import com.example.shawarma.screens.registration.RegistrationScreen
 import com.example.shawarma.ui.theme.MyLightYellow
@@ -58,7 +59,10 @@ fun MainNavBar() {
                 OrdersScreen()
             }
             composable(ScreenPaths.products.name) {
-                ProductsScreen()
+                ProductsScreen(navController)
+            }
+            composable(ScreenPaths.product.name) {
+                ProductScreen(navController)
             }
         }
     }

app/src/main/java/com/example/shawarma/screens/authorization/AuthorizationScreen.kt

@@ -98,7 +98,7 @@ fun AuthorizationCard(navHostController: NavHostController) {
                 Button(
                     onClick = {
                         navHostController.navigate(ScreenPaths.home.name) {
-                        popUpTo(ScreenPaths.home.name) {
+                            popUpTo(ScreenPaths.authorization.name) {
                                 inclusive = true
                             }
                         } },

app/src/main/java/com/example/shawarma/screens/products/ProductScreen.kt

@@ -0,0 +1,130 @@
+package com.example.shawarma.screens.products
+
+import androidx.compose.foundation.BorderStroke
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.Button
+import androidx.compose.material.ButtonDefaults
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.TextFieldValue
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.zIndex
+import androidx.navigation.NavHostController
+import com.example.shawarma.ui.theme.MarckFamily
+import com.example.shawarma.ui.theme.MyLightYellow
+import com.example.shawarma.ui.theme.MyMainBackground
+import com.example.shawarma.ui.theme.MyOrange
+import com.example.shawarma.ui.theme.NunitoFamily
+import com.example.shawarma.widgets.MyTextField
+import com.example.shawarma.widgets.ShawarmaLogo2
+
+@Composable
+fun ProductScreen(navHostController: NavHostController) {
+    Box(
+        contentAlignment = Alignment.TopCenter
+    ) {
+        ProductWidget(navHostController)
+        ShawarmaLogo2()
+    }
+}
+
+@Composable
+fun ProductWidget(navHostController: NavHostController) {
+    val title = remember { mutableStateOf(TextFieldValue(""))}
+    val price = remember { mutableStateOf(TextFieldValue(""))}
+    val oldPrice = remember { mutableStateOf(TextFieldValue(""))}
+    Box(
+        modifier = Modifier
+            .clip(shape = RoundedCornerShape(30.dp))
+            .padding(top = 100.dp)
+            .fillMaxSize()
+            .background(color = MyMainBackground)
+            .zIndex(2f),
+
+        contentAlignment = Alignment.TopCenter
+    ){
+        Text(
+            text = "Товар",
+            fontFamily = MarckFamily,
+            fontSize = 40.sp,
+            modifier = Modifier.padding(top = 15.dp)
+        )
+        Column(
+            modifier = Modifier
+                .padding(top = 60.dp),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            MyTextField(
+                text = title,
+                onTextChanged = {title.value = it},
+                modifier = Modifier
+                    .padding(
+                        top = (20).dp
+                    )
+                    .size(300.dp, (60).dp),
+                placeholder = "Наименование",
+                singleLine = true
+            )
+            MyTextField(
+                text = price,
+                onTextChanged = {price.value = it},
+                modifier = Modifier
+                    .padding(
+                        top = (20).dp
+                    )
+                    .size(300.dp, (60).dp),
+                placeholder = "Цена",
+                singleLine = true
+            )
+            MyTextField(
+                text = oldPrice,
+                onTextChanged = {oldPrice.value = it},
+                modifier = Modifier
+                    .padding(
+                        top = (20).dp
+                    )
+                    .size(300.dp, (60).dp),
+                placeholder = "Старая цена",
+                singleLine = true
+            )
+            Button(
+                modifier = Modifier
+                    .padding(top = 80.dp)
+                    .size(300.dp, 50.dp),
+                colors = ButtonDefaults.buttonColors(
+                    backgroundColor = MyLightYellow
+                ),
+                border = BorderStroke(2.dp, color = MyOrange),
+                shape = RoundedCornerShape(20.dp),
+                onClick = {
+                    // TODO
+                    navHostController.popBackStack()
+                }
+            ) {
+                Text(
+                    text = "Добавить",
+                    fontFamily = NunitoFamily,
+                    fontSize = 24.sp,
+                    fontWeight = FontWeight.Bold
+                )
+            }
+        }
+
+    }
+}

app/src/main/java/com/example/shawarma/screens/products/ProductsScreen.kt

@@ -34,6 +34,7 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.zIndex
+import androidx.navigation.NavHostController
 import com.example.shawarma.R
 import com.example.shawarma.data.db.AppDatabase
 import com.example.shawarma.data.models.ProductModel
@@ -45,16 +46,17 @@ import com.example.shawarma.ui.theme.MyLightYellow
 import com.example.shawarma.ui.theme.MyMainBackground
 import com.example.shawarma.ui.theme.MyOrange
 import com.example.shawarma.ui.theme.NunitoFamily
+import com.example.shawarma.utils.ScreenPaths
 import com.example.shawarma.widgets.ShawarmaLogo2
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 
 @Composable
-fun ProductsScreen() {
+fun ProductsScreen(navHostController: NavHostController) {
     Box(
         contentAlignment = Alignment.TopCenter
     ) {
-        ProductsList()
+        ProductsList(navHostController)
         ShawarmaLogo2()
     }
 }
@@ -62,7 +64,7 @@ fun ProductsScreen() {
 
 
 @Composable
-fun ProductsList(){
+fun ProductsList(navHostController: NavHostController){
     val context = LocalContext.current
     val products = remember { mutableStateListOf<ProductModel>() }
     LaunchedEffect(Unit) {
@@ -99,7 +101,9 @@ fun ProductsList(){
             ),
             border = BorderStroke(2.dp, color = MyOrange),
             shape = RoundedCornerShape(20.dp),
-            onClick = { /*TODO*/ }
+            onClick = {
+                navHostController.navigate(ScreenPaths.product.name)
+            }
         ) {
             Text(
                 text = "Добавить товар",
@@ -148,6 +152,16 @@ fun ProductItem(product: ProductModel){
                     fontSize = 20.sp,
                     fontWeight = FontWeight.Bold
                 )
+                if (product.oldPrice != null) {
+                    Text(
+                        text = product.price.toString() + " руб.",
+                        fontFamily = NunitoFamily,
+                        fontSize = 20.sp,
+                        fontWeight = FontWeight.Bold,
+                        color = Color.Red
+                    )
+                }
+                else {
                     Text(
                         text = product.price.toString() + " руб.",
                         fontFamily = NunitoFamily,
@@ -156,6 +170,8 @@ fun ProductItem(product: ProductModel){
                     )
                 }
 
+            }
+
             Button(
                 modifier = Modifier.size(60.dp),
                 shape = RoundedCornerShape(10.dp),

app/src/main/java/com/example/shawarma/utils/ScreenPaths.kt

@@ -1,5 +1,5 @@
 package com.example.shawarma.utils
 
 enum class ScreenPaths {
-    authorization, registration, home, discount, cart, orders, products
+    authorization, registration, home, discount, cart, orders, products, product
 }