105 lines
4.1 KiB
Kotlin
105 lines
4.1 KiB
Kotlin
package moe.kageru.kagebot
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import moe.kageru.kagebot.Globals.api
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import moe.kageru.kagebot.Globals.server
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import moe.kageru.kagebot.Log.log
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import org.javacord.api.entity.channel.TextChannel
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import org.javacord.api.entity.message.MessageAuthor
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import org.javacord.api.entity.message.embed.EmbedBuilder
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import org.javacord.api.entity.permission.Role
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import java.awt.Color
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import java.util.*
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import java.util.concurrent.CompletableFuture
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import java.util.concurrent.CompletionException
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object Util {
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inline fun <T> T.doIf(condition: (T) -> Boolean, op: (T) -> T): T {
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return if (condition(this)) op(this) else this
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}
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/**
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* Mimics the behavior of [Optional.ifPresent], but returns null if the optional is empty,
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* allowing easier fallback behavior via Kotlin’s ?: operator.
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*/
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inline fun <T, R> Optional<T>.ifNotEmpty(op: (T) -> R): R? {
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if (this.isPresent) {
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return op(this.get())
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}
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return null
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}
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fun hasOneOf(messageAuthor: MessageAuthor, roles: Set<Role>): Boolean {
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return messageAuthor.asUser().ifNotEmpty { user ->
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user.getRoles(server).toSet().intersect(roles).isNotEmpty()
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} ?: false
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}
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private val channelIdRegex = Regex("\\d{18}")
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private fun String.isEntityId() = channelIdRegex.matches(this)
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@Throws(IllegalArgumentException::class)
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fun findRole(idOrName: String): Role {
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return when {
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idOrName.isEntityId() -> server.getRoleById(idOrName).ifNotEmpty { it }
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?: throw IllegalArgumentException("Role $idOrName not found.")
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else -> server.getRolesByNameIgnoreCase(idOrName).let {
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when (it.size) {
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0 -> throw IllegalArgumentException("Role $idOrName not found.")
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1 -> it[0]
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else -> throw IllegalArgumentException("More than one role found with name $idOrName. Please specify the role ID instead")
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}
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}
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}
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}
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fun <T> wasSuccessful(future: CompletableFuture<T>): Boolean {
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try {
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future.join()
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} catch (e: CompletionException) {
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// we don’t care about this error, but I don’t want to spam stdout
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}
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return !future.isCompletedExceptionally
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}
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@Throws(IllegalArgumentException::class)
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fun findChannel(idOrName: String): TextChannel {
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return when {
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idOrName.isEntityId() -> server.getTextChannelById(idOrName).ifNotEmpty { it }
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?: throw IllegalArgumentException("Channel ID $idOrName not found.")
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else -> if (idOrName.startsWith('@')) {
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api.getCachedUserByDiscriminatedName(idOrName.removePrefix("@")).ifNotEmpty { user ->
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user.privateChannel.ifNotEmpty { it }
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?: throw IllegalArgumentException("Could not open private channel with user $idOrName for redirection.")
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}
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?: throw IllegalArgumentException("Can’t find user $idOrName for redirection.")
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} else {
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server.getTextChannelsByName(idOrName).let {
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when (it.size) {
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0 -> throw IllegalArgumentException("Channel $idOrName not found.")
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1 -> it[0]
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else -> throw IllegalArgumentException("More than one channel found with name $idOrName. Please specify the channel ID instead")
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}
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}
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}
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}
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}
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inline fun checked(op: (() -> Unit)) {
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try {
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op()
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} catch (e: Exception) {
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log.warning("An uncaught exception occurred.\n$e")
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Globals.api.owner.get().sendMessage(
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EmbedBuilder()
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.setTimestampToNow()
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.setColor(Color.RED)
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.addField("Error", "kagebot has encountered an error")
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.addField(
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"$e", """```
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${e.stackTrace.joinToString("\n")}
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```""".trimIndent()
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)
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)
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}
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}
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} |