feat(app): add CalendarTopBar

app/src/main/kotlin/com/intelligentbackpack/app/ui/common/CalendarTopBar.kt

@@ -0,0 +1,200 @@
+package com.intelligentbackpack.app.ui.common
+
+import androidx.compose.foundation.BorderStroke
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.Icon
+import androidx.compose.material.IconButton
+import androidx.compose.material.Text
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.KeyboardArrowLeft
+import androidx.compose.material.icons.filled.KeyboardArrowRight
+import androidx.compose.material.icons.outlined.CalendarMonth
+import androidx.compose.material.icons.outlined.Today
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.DatePicker
+import androidx.compose.material3.DatePickerDefaults
+import androidx.compose.material3.DatePickerDialog
+import androidx.compose.material3.Divider
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.rememberDatePickerState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import com.intelligentbackpack.app.ui.theme.IntelligentBackpackAppTheme
+import java.time.Instant
+import java.time.LocalDate
+import java.time.ZoneId
+import java.util.Calendar
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun CalendarTopBar(
+    onDateChange: (LocalDate) -> Unit = {},
+) {
+    val today = LocalDate.now(ZoneId.systemDefault())
+    var openPickerDialog by remember { mutableStateOf(false) }
+    var selectedDate by remember { mutableStateOf(today) }
+    if (openPickerDialog) {
+        val datePickerState = rememberDatePickerState(
+            Calendar.getInstance().apply {
+                set(selectedDate.year, selectedDate.monthValue - 1, selectedDate.dayOfMonth)
+            }.timeInMillis,
+        )
+
+        DatePickerDialog(
+            modifier = Modifier.fillMaxSize(),
+            onDismissRequest = { openPickerDialog = false },
+            confirmButton = {
+                Button(
+                    onClick = {
+                        selectedDate = datePickerState.selectedDateMillis?.let {
+                            Instant.ofEpochMilli(it).atZone(ZoneId.systemDefault())
+                                .toLocalDate()
+                        }
+                        onDateChange(selectedDate)
+                        openPickerDialog = false
+                    },
+                    modifier = Modifier
+                        .padding(top = 10.dp),
+                    enabled = true,
+                    colors = ButtonDefaults.buttonColors(
+                        containerColor = MaterialTheme.colorScheme.primary,
+                        contentColor = MaterialTheme.colorScheme.background,
+                    ),
+                    border = BorderStroke(1.dp, MaterialTheme.colorScheme.primary),
+                    shape = MaterialTheme.shapes.medium,
+                ) {
+                    Text("Ok", color = MaterialTheme.colorScheme.onPrimary)
+                }
+            },
+            dismissButton = {
+                Button(
+                    onClick = {
+                        openPickerDialog = false
+                    },
+                    modifier = Modifier
+                        .padding(top = 10.dp),
+                    enabled = true,
+                    colors = ButtonDefaults.buttonColors(
+                        containerColor = MaterialTheme.colorScheme.background,
+                        contentColor = MaterialTheme.colorScheme.primary,
+                    ),
+                    border = BorderStroke(1.dp, MaterialTheme.colorScheme.primary),
+                    shape = MaterialTheme.shapes.medium,
+                ) {
+                    Text("Cancel", color = MaterialTheme.colorScheme.onBackground)
+                }
+            },
+            content = {
+                DatePicker(state = datePickerState, modifier = Modifier)
+            },
+            colors = DatePickerDefaults.colors(
+                selectedDayContentColor = Color.White,
+            ),
+        )
+    }
+    Column(modifier = Modifier.fillMaxWidth()) {
+        val textColor = MaterialTheme.colorScheme.onSurface
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(top = 10.dp),
+            horizontalArrangement = Arrangement.SpaceEvenly,
+            verticalAlignment = Alignment.CenterVertically,
+        ) {
+            IconButton(onClick = { openPickerDialog = true }) {
+                Row(
+                    modifier = Modifier,
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.spacedBy(5.dp),
+                ) {
+                    Text(text = "Select date", color = textColor)
+                    Icon(
+                        imageVector = Icons.Outlined.CalendarMonth,
+                        contentDescription = "Select date",
+                        tint = textColor,
+                    )
+                }
+            }
+            IconButton(onClick = { selectedDate = today }) {
+                Row(
+                    modifier = Modifier,
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.spacedBy(5.dp),
+                ) {
+                    Text(text = "Today", color = textColor)
+                    Icon(imageVector = Icons.Outlined.Today, contentDescription = "Today", tint = textColor)
+                }
+            }
+            Row(
+                modifier = Modifier,
+                horizontalArrangement = Arrangement.SpaceEvenly,
+            ) {
+                IconButton(onClick = { selectedDate = selectedDate.minusDays(1) }) {
+                    Icon(
+                        imageVector = Icons.Default.KeyboardArrowLeft,
+                        contentDescription = "Previous day",
+                        tint = textColor,
+                    )
+                }
+                IconButton(onClick = { selectedDate = selectedDate.plusDays(1) }) {
+                    Icon(
+                        imageVector = Icons.Default.KeyboardArrowRight,
+                        contentDescription = "Next day",
+                        tint = textColor,
+                    )
+                }
+            }
+        }
+        Divider(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 10.dp, vertical = 5.dp),
+            color = textColor,
+        )
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(bottom = 10.dp),
+            horizontalArrangement = Arrangement.SpaceEvenly,
+            verticalAlignment = Alignment.CenterVertically,
+        ) {
+            val month = selectedDate.month.name.firstLetterToUpperCase()
+            val day = selectedDate.dayOfMonth
+            val year = selectedDate.year
+            val dayOfWeek = selectedDate.dayOfWeek.name.firstLetterToUpperCase()
+            Text(text = "$dayOfWeek $month $day, $year", color = textColor)
+        }
+    }
+}
+
+fun String.firstLetterToUpperCase(): String =
+    this.lowercase().replaceFirstChar { it.uppercase() }
+
+@Preview
+@Composable
+fun CalendarTopBarPreview() {
+    IntelligentBackpackAppTheme {
+        Surface(
+            modifier = Modifier.fillMaxSize(),
+            color = MaterialTheme.colorScheme.background,
+        ) {
+            CalendarTopBar()
+        }
+    }
+}