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JSON serialization, save and load routines

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This commit is contained in:
Daniele Verducci 2024-11-03 08:30:07 +01:00
parent 596fa67272
commit 2948e059de
3 changed files with 91 additions and 4 deletions
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9
app/src/main/java/it/danieleverducci/lunatracker/MainActivity.kt
View File

@ -6,17 +6,23 @@ import android.view.View
import android.widget.NumberPicker
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import it.danieleverducci.lunatracker.entities.Logbook
import it.danieleverducci.lunatracker.entities.LunaEvent
import it.danieleverducci.lunatracker.entities.LunaEventType
import java.io.File
class MainActivity : AppCompatActivity() {
companion object {
val TAG = "MainActivity"
}
lateinit var logbook: Logbook
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
logbook = Logbook.load(this)
setContentView(R.layout.activity_main)
findViewById<View>(R.id.button_bottle).setOnClickListener { askBabyBottleContent() }
@ -68,7 +74,8 @@ class MainActivity : AppCompatActivity() {
}
fun logEvent(event: LunaEvent) {
Log.d(TAG, event.toString())
logbook.logs.add(event)
logbook.save(this)
}
}

42
app/src/main/java/it/danieleverducci/lunatracker/entities/Logbook.kt Normal file
View File

@ -0,0 +1,42 @@
package it.danieleverducci.lunatracker.entities
import android.content.Context
import android.util.Log
import org.json.JSONArray
import java.io.File
import java.io.FileInputStream
import java.io.FileNotFoundException
class Logbook {
companion object {
val TAG = "Logbook"
fun load(context: Context): Logbook {
val logbook = Logbook()
val file = File(context.getFilesDir(), "data.json")
try {
val json = FileInputStream(file).bufferedReader().use { it.readText() }
val ja = JSONArray(json)
for (i in 0 until ja.length()) {
val jo = ja.getJSONObject(i)
val evt = LunaEvent.fromJson(jo)
logbook.logs.add(evt)
}
} catch (e: FileNotFoundException) {
Log.d(TAG, "No logbook file found")
}
return logbook
}
}
val logs = ArrayList<LunaEvent>()
fun save(context: Context) {
val file = File(context.getFilesDir(), "data.json")
val ja = JSONArray()
for (l in logs) {
ja.put(l.toJson())
}
file.writeText(ja.toString())
}
}

44
app/src/main/java/it/danieleverducci/lunatracker/entities/LunaEvent.kt
View File

@ -1,12 +1,13 @@
package it.danieleverducci.lunatracker.entities
import org.json.JSONObject
import java.util.Date
class LunaEvent(
val type: LunaEventType,
val quantity: Int? = null
val quantity: Int? = null,
){
val time: Long // In unix time (seconds since 1970)
var time: Long // In unix time (seconds since 1970)
init {
time = System.currentTimeMillis() / 1000
@ -15,7 +16,43 @@ class LunaEvent(
override fun toString(): String {
return "${type.toString()} qty: $quantity time: ${Date(time * 1000)}"
}
}
fun toJson(): JSONObject {
val jo = JSONObject()
val type = when (type) {
LunaEventType.BABY_BOTTLE -> "BABY_BOTTLE"
LunaEventType.BREASTFEEDING_LEFT_NIPPLE -> "BREASTFEEDING_LEFT_NIPPLE"
LunaEventType.BREASTFEEDING_BOTH_NIPPLE -> "BREASTFEEDING_BOTH_NIPPLE"
LunaEventType.BREASTFEEDING_RIGHT_NIPPLE -> "BREASTFEEDING_RIGHT_NIPPLE"
LunaEventType.DIAPERCHANGE_POO -> "DIAPERCHANGE_POO"
LunaEventType.DIAPERCHANGE_PEE -> "DIAPERCHANGE_PEE"
else -> "UNKNOWN"
}
jo.put("type", type)
jo.put("quantity", quantity)
jo.put("time", time)
return jo
}
companion object {
fun fromJson(j: JSONObject): LunaEvent {
val type = when (j.getString("type")) {
"BABY_BOTTLE" -> LunaEventType.BABY_BOTTLE
"BREASTFEEDING_LEFT_NIPPLE" -> LunaEventType.BREASTFEEDING_LEFT_NIPPLE
"BREASTFEEDING_BOTH_NIPPLE" -> LunaEventType.BREASTFEEDING_BOTH_NIPPLE
"BREASTFEEDING_RIGHT_NIPPLE" -> LunaEventType.BREASTFEEDING_RIGHT_NIPPLE
"DIAPERCHANGE_POO" -> LunaEventType.DIAPERCHANGE_POO
"DIAPERCHANGE_PEE" -> LunaEventType.DIAPERCHANGE_PEE
else -> LunaEventType.UNKNOWN
}
val quantity = j.optInt("quantity")
val time = j.getLong("time")
val evt = LunaEvent(type, quantity)
evt.time = time
return evt
}
}
}
enum class LunaEventType {
BABY_BOTTLE,
@ -24,4 +61,5 @@ enum class LunaEventType {
BREASTFEEDING_RIGHT_NIPPLE,
DIAPERCHANGE_POO,
DIAPERCHANGE_PEE,
UNKNOWN
}