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package moe.nea.firmament.features.chat
import io.ktor.client.request.*
import io.ktor.client.statement.*
import io.ktor.utils.io.jvm.javaio.*
import java.net.URL
import java.util.*
import moe.nea.jarvis.api.Point
import kotlinx.coroutines.Deferred
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.async
import kotlin.math.max
import kotlin.math.min
import net.minecraft.client.gui.screen.ChatScreen
import net.minecraft.client.texture.NativeImage
import net.minecraft.client.texture.NativeImageBackedTexture
import net.minecraft.text.HoverEvent
import net.minecraft.text.Style
import net.minecraft.text.Text
import net.minecraft.util.Formatting
import net.minecraft.util.Identifier
import moe.nea.firmament.Firmament
import moe.nea.firmament.events.ClientChatLineReceivedEvent
import moe.nea.firmament.events.ScreenRenderPostEvent
import moe.nea.firmament.features.FirmamentFeature
import moe.nea.firmament.gui.config.ManagedConfig
import moe.nea.firmament.util.MC
import moe.nea.firmament.util.transformEachRecursively
import moe.nea.firmament.util.unformattedString
object ImagePreview : FirmamentFeature {
override val identifier: String
get() = "image-preview"
object TConfig : ManagedConfig(identifier) {
val enabled by toggle("enabled") { true }
val allowAllHosts by toggle("allow-all-hosts") { false }
val allowedHosts by string("allowed-hosts") { "cdn.discordapp.com,media.discordapp.com,media.discordapp.net,i.imgur.com" }
val actualAllowedHosts get() = allowedHosts.split(",").map { it.trim() }
val screenPercentage by integer("percentage", 10, 100) { 50 }
val position by position("position", 16 * 20, 9 * 20) { Point(0.0, 0.0) }
}
private fun isHostAllowed(host: String) =
TConfig.allowAllHosts || TConfig.actualAllowedHosts.any { it.equals(host, ignoreCase = true) }
private fun isUrlAllowed(url: String) = isHostAllowed(url.removePrefix("https://").substringBefore("/"))
override val config get() = TConfig
val urlRegex = "https://[^. ]+\\.[^ ]+(\\.(png|gif|jpe?g))(\\?[^ ]*)?( |$)".toRegex()
data class Image(
val texture: Identifier,
val width: Int,
val height: Int,
)
val imageCache: MutableMap<String, Deferred<Image?>> =
Collections.synchronizedMap(mutableMapOf<String, Deferred<Image?>>())
private fun tryCacheUrl(url: String) {
if (!isUrlAllowed(url)) {
return
}
if (url in imageCache) {
return
}
imageCache[url] = Firmament.coroutineScope.async {
try {
val response = Firmament.httpClient.get(URL(url))
if (response.status.value == 200) {
val inputStream = response.bodyAsChannel().toInputStream(Firmament.globalJob)
val image = NativeImage.read(inputStream)
val texture = MC.textureManager.registerDynamicTexture(
"dynamic_image_preview",
NativeImageBackedTexture(image)
)
Image(texture, image.width, image.height)
} else
null
} catch (exc: Exception) {
exc.printStackTrace()
null
}
}
}
@OptIn(ExperimentalCoroutinesApi::class)
override fun onLoad() {
ClientChatLineReceivedEvent.subscribe {
it.replaceWith = it.text.transformEachRecursively { child ->
val text = child.string
if ("://" !in text) return@transformEachRecursively child
val s = Text.empty().setStyle(child.style)
var index = 0
while (index < text.length) {
val nextMatch = urlRegex.find(text, index)
if (nextMatch == null) {
s.append(Text.literal(text.substring(index, text.length)))
break
}
val range = nextMatch.groups[0]!!.range
val url = nextMatch.groupValues[0]
s.append(Text.literal(text.substring(index, range.first)))
s.append(
Text.literal(url).setStyle(
Style.EMPTY.withUnderline(true).withColor(
Formatting.AQUA
).withHoverEvent(HoverEvent(HoverEvent.Action.SHOW_TEXT, Text.literal(url)))
)
)
tryCacheUrl(url)
index = range.last + 1
}
s
}
}
ScreenRenderPostEvent.subscribe {
if (!TConfig.enabled) return@subscribe
if (it.screen !is ChatScreen) return@subscribe
val hoveredComponent =
MC.inGameHud.chatHud.getTextStyleAt(it.mouseX.toDouble(), it.mouseY.toDouble()) ?: return@subscribe
val hoverEvent = hoveredComponent.hoverEvent ?: return@subscribe
val value = hoverEvent.getValue(HoverEvent.Action.SHOW_TEXT) ?: return@subscribe
val url = urlRegex.matchEntire(value.unformattedString)?.groupValues?.get(0) ?: return@subscribe
val imageFuture = imageCache[url] ?: return@subscribe
if (!imageFuture.isCompleted) return@subscribe
val image = imageFuture.getCompleted() ?: return@subscribe
it.drawContext.matrices.push()
val pos = TConfig.position
pos.applyTransformations(it.drawContext.matrices)
val scale = min(1F, min((9 * 20F) / image.height, (16 * 20F) / image.width))
it.drawContext.matrices.scale(scale, scale, 1F)
it.drawContext.drawTexture(
image.texture,
0,
0,
1F,
1F,
image.width,
image.height,
image.width,
image.height,
)
it.drawContext.matrices.pop()
}
}
}
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