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/*
* Copyright (C) 2023 NotEnoughUpdates contributors
*
* This file is part of NotEnoughUpdates.
*
* NotEnoughUpdates is free software: you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* NotEnoughUpdates is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with NotEnoughUpdates. If not, see <https://www.gnu.org/licenses/>.
*/
package io.github.moulberry.notenoughupdates.miscgui.pricegraph
import com.google.common.reflect.TypeToken
import com.google.gson.GsonBuilder
import com.google.gson.JsonElement
import com.google.gson.JsonObject
import io.github.moulberry.notenoughupdates.NotEnoughUpdates
import java.io.*
import java.nio.charset.StandardCharsets
import java.text.SimpleDateFormat
import java.time.Instant
import java.util.*
import java.util.concurrent.CompletableFuture
import java.util.concurrent.atomic.AtomicBoolean
import java.util.zip.GZIPInputStream
import java.util.zip.GZIPOutputStream
object LocalGraphDataProvider : GraphDataProvider {
private val priceDir = File("config/notenoughupdates/prices")
private val GSON = GsonBuilder().create()
private val format = SimpleDateFormat("dd-MM-yyyy")
private val config = NotEnoughUpdates.INSTANCE.config
private val fileLocked = AtomicBoolean(false)
override fun loadData(itemId: String): CompletableFuture<Map<Instant, PriceObject>?> {
return CompletableFuture.supplyAsync {
if (!priceDir.exists() || !priceDir.isDirectory) return@supplyAsync null
if (fileLocked.get()) while (fileLocked.get()) { // Wait for file to become unlocked
Thread.sleep(100)
}
val response = mutableMapOf<Instant, PriceObject>()
val futures = mutableListOf<CompletableFuture<Map<Instant, PriceObject>?>>()
for (file in priceDir.listFiles { file -> file.extension == "gz" }!!) {
futures.add(CompletableFuture.supplyAsync {
val data = load(file)?.get(itemId) ?: return@supplyAsync null
(if (data.isBz()) data.bz?.map {
Instant.ofEpochSecond(it.key) to PriceObject(it.value.b, it.value.s)
} else data.ah?.map {
Instant.ofEpochSecond(it.key) to PriceObject(it.value.toDouble(), null)
})?.toMap()
})
}
for (future in futures) {
val result = future.get()
if (result != null) response.putAll(result)
}
return@supplyAsync response
}
}
private fun load(file: File): MutableMap<String, ItemData>? {
val type = object : TypeToken<MutableMap<String, ItemData>?>() {}.type
if (file.exists()) {
try {
BufferedReader(
InputStreamReader(
GZIPInputStream(FileInputStream(file)),
StandardCharsets.UTF_8
)
).use { reader ->
return GSON.fromJson(
reader,
type
)
}
} catch (e: Exception) {
println("Deleting " + file.name + " because it is probably corrupted.")
file.delete()
}
}
return null
}
fun savePrices(items: JsonObject, bazaar: Boolean) {
try {
if (!priceDir.exists() && !priceDir.mkdir()) return
val files = priceDir.listFiles()
val dataRetentionTime =
System.currentTimeMillis() - config.ahGraph.dataRetention * 86400000L
files?.filter { it.extension == "gz" && it.lastModified() < dataRetentionTime }?.forEach { it.delete() }
if (!config.ahGraph.graphEnabled || config.ahGraph.dataSource != 1) return
if (fileLocked.get()) while (fileLocked.get()) { // Wait for file to become unlocked
Thread.sleep(100)
}
fileLocked.set(true)
val date = Date()
val epochSecond = date.toInstant().epochSecond
val file = File(priceDir, "prices_" + format.format(date) + ".gz")
var prices = load(file) ?: mutableMapOf()
if (file.exists()) {
val tempPrices = load(file)
if (tempPrices != null) prices = tempPrices
}
for (item in items.entrySet()) {
addOrUpdateItemPriceInfo(item, prices, epochSecond, bazaar)
}
file.createNewFile()
BufferedWriter(
OutputStreamWriter(
GZIPOutputStream(FileOutputStream(file)),
StandardCharsets.UTF_8
)
).use { writer -> writer.write(GSON.toJson(prices)) }
fileLocked.set(false)
} catch (e: java.lang.Exception) {
e.printStackTrace()
fileLocked.set(false)
}
}
private fun addOrUpdateItemPriceInfo(
item: Map.Entry<String, JsonElement>,
prices: MutableMap<String, ItemData>,
timestamp: Long,
bazaar: Boolean
) {
val itemName = item.key
var existingItemData: ItemData? = null
if (prices.containsKey(itemName)) {
existingItemData = prices[itemName]
}
// Handle transitions from ah to bz (the other direction typically doesn't happen)
if (existingItemData != null) {
if (existingItemData.isBz() && !bazaar) {
return
}
if (!existingItemData.isBz() && bazaar) {
prices.remove(itemName)
existingItemData = null
}
}
if (bazaar) {
if (!item.value.asJsonObject.has("curr_buy") ||
!item.value.asJsonObject.has("curr_sell")
) {
return
}
val bzData = BzData(
item.value.asJsonObject["curr_buy"].asDouble,
item.value.asJsonObject["curr_sell"].asDouble
)
if (existingItemData != null) {
existingItemData.bz?.set(timestamp, bzData)
} else {
val mapData = mutableMapOf(timestamp to bzData)
prices[item.key] = ItemData(bz = mapData)
}
} else {
if (existingItemData != null) {
prices[item.key]!!.ah?.set(timestamp, item.value.asBigDecimal.toLong())
} else {
val mapData = mutableMapOf(timestamp to item.value.asLong)
prices[item.key] = ItemData(ah = mapData)
}
}
}
}
private data class ItemData(val ah: MutableMap<Long, Long>? = null, val bz: MutableMap<Long, BzData>? = null) {
fun get(): MutableMap<Long, *>? = if (!isBz()) ah else bz
fun isBz() = !bz.isNullOrEmpty()
}
private class BzData(val b: Double, val s: Double)
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