Merge pull request #821 from simple-robot/resource-image-resolver

StringResource 拆分为 StringReadableResource；增加 Resource 和 OfflineImage 的 Resolver 来允许组件等第三方更快速的分流它们的可能内容物

simbot-api/src/commonMain/kotlin/love/forte/simbot/message/OfflineImageResolver.kt

@@ -0,0 +1,116 @@
+/*
+ *     Copyright (c) 2024. ForteScarlet.
+ *
+ *     Project    https://github.com/simple-robot/simpler-robot
+ *     Email      ForteScarlet@163.com
+ *
+ *     This file is part of the Simple Robot Library (Alias: simple-robot, simbot, etc.).
+ *
+ *     This program 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.
+ *
+ *     This program 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
+ *     Lesser GNU General Public License for more details.
+ *
+ *     You should have received a copy of the Lesser GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+package love.forte.simbot.message
+
+import love.forte.simbot.resource.ByteArrayResource
+import love.forte.simbot.resource.Resource
+import love.forte.simbot.resource.ResourceResolver
+import love.forte.simbot.resource.ResourceResolver.Companion.resolve
+import love.forte.simbot.resource.StringResource
+import kotlin.jvm.JvmStatic
+
+
+/**
+ * 使用 [OfflineImageResolver] 分析处理一个 [OfflineImage].
+ * 类似于 `visitor` 的用法，与常见地访问器区别于通常情况下只会有一个 `resolve*`
+ * 会最终执行。
+ *
+ * 在 JVM 平台会提供一个具有更多能力的类型。
+ *
+ * @author ForteScarlet
+ */
+public interface OfflineImageResolver<C> {
+
+    /**
+     * 处理一个类型为未知的 [OfflineImage] 的 image.
+     */
+    public fun resolveUnknown(image: OfflineImage, context: C)
+
+    /**
+     * 处理一个类型为 [OfflineByteArrayImage] 的 image.
+     */
+    public fun resolveByteArray(image: OfflineByteArrayImage, context: C)
+
+    /**
+     * 处理一个类型为 [OfflineResourceImage] 的 image.
+     */
+    public fun resolveResource(image: OfflineResourceImage, context: C)
+
+    public companion object {
+        /**
+         * 使用 [this] 分析处理 [image].
+         */
+        @JvmStatic
+        public fun <C> OfflineImageResolver<C>.resolve(image: OfflineImage, context: C) {
+            when (image) {
+                is OfflineByteArrayImage -> resolveByteArray(image, context)
+                is OfflineResourceImage -> resolveResource(image, context)
+                else -> resolveUnknown(image, context)
+            }
+        }
+    }
+}
+
+/**
+ * 继承 [OfflineImageResolver] 和 [ResourceResolver]，
+ * 对其中可能出现的实际内容物（例如 [ByteArray] 或 [String]）进行处理。
+ */
+public interface OfflineImageValueResolver<C> :
+    OfflineImageResolver<C>,
+    ResourceResolver<C> {
+    /**
+     * 处理可能来自 [OfflineImage] 或 [Resource] 中的 [ByteArray]。
+     */
+    public fun resolveByteArray(byteArray: ByteArray, context: C)
+
+    /**
+     * 处理可能来自 [OfflineImage] 或 [Resource] 中的 [String]。
+     */
+    public fun resolveString(string: String, context: C)
+
+    /**
+     * 使用 [resolveByteArray] 处理 [OfflineByteArrayImage.data].
+     */
+    override fun resolveByteArray(image: OfflineByteArrayImage, context: C) {
+        resolveByteArray(image.data(), context)
+    }
+
+    /**
+     * 使用 [resolveByteArray] 处理 [ByteArrayResource.data].
+     */
+    override fun resolveByteArray(resource: ByteArrayResource, context: C) {
+        resolveByteArray(resource.data(), context)
+    }
+
+    /**
+     * 使用 [StringResource] 处理 [StringResource.string].
+     */
+    override fun resolveString(resource: StringResource, context: C) {
+        resolveString(resource.string(), context)
+    }
+
+    override fun resolveResource(image: OfflineResourceImage, context: C) {
+        resolve(image.resource, context)
+    }
+}

simbot-api/src/commonMain/kotlin/love/forte/simbot/resource/Resource.kt

@@ -4,7 +4,7 @@
  *     Project    https://github.com/simple-robot/simpler-robot
  *     Email      ForteScarlet@163.com
  *
- *     This file is part of the Simple Robot Library.
+ *     This file is part of the Simple Robot Library (Alias: simple-robot, simbot, etc.).
  *
  *     This program is free software: you can redistribute it and/or modify
  *     it under the terms of the GNU Lesser General Public License as published by
@@ -132,16 +132,27 @@ private data class ByteArrayResourceImpl(private val raw: ByteArray) : ByteArray
 }
 
 /**
- * 可以读取到 [String] 格式内容的 [Resource]。
+ * 一个可以读取到 [String] 内容物的拓展类型。
+ * 是其他 [Resource] 类型的附加能力，但不属于一个标准的 [Resource] 类型。
  */
-public interface StringResource : Resource {
+public interface StringReadableResource : Resource {
     /**
      * 读取此资源的 [String] 内容。
      */
     @Throws(Exception::class)
     public fun string(): String
 }
 
+/**
+ * 直接使用 [String] 作为内容的 [Resource]。
+ */
+public interface StringResource : StringReadableResource {
+    /**
+     * 读取此资源的 [String] 内容。
+     */
+    override fun string(): String
+}
+
 /**
  * 通过提供的 [String] 直接构建一个 [StringResource]。
  */

simbot-api/src/commonMain/kotlin/love/forte/simbot/resource/ResourceResolver.kt

@@ -0,0 +1,67 @@
+/*
+ *     Copyright (c) 2024. ForteScarlet.
+ *
+ *     Project    https://github.com/simple-robot/simpler-robot
+ *     Email      ForteScarlet@163.com
+ *
+ *     This file is part of the Simple Robot Library (Alias: simple-robot, simbot, etc.).
+ *
+ *     This program 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.
+ *
+ *     This program 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
+ *     Lesser GNU General Public License for more details.
+ *
+ *     You should have received a copy of the Lesser GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+package love.forte.simbot.resource
+
+import kotlin.jvm.JvmStatic
+
+
+/**
+ * 使用 [ResourceResolver] 分析处理一个 [Resource].
+ * 类似于 `visitor` 的用法，与常见地访问器区别于通常情况下只会有一个 `resolve*`
+ * 会最终执行。
+ *
+ * 在 JVM 平台会提供一个具有更多能力的类型。
+ *
+ * @author ForteScarlet
+ */
+public interface ResourceResolver<C> {
+    /**
+     * 处理一个未知的 [Resource] 类型的 resource.
+     */
+    public fun resolveUnknown(resource: Resource, context: C)
+
+    /**
+     * 处理一个 [ByteArrayResource] 类型的 resource.
+     */
+    public fun resolveByteArray(resource: ByteArrayResource, context: C)
+
+    /**
+     * 处理一个 [StringResource] 类型的 resource.
+     */
+    public fun resolveString(resource: StringResource, context: C)
+
+    public companion object {
+        /**
+         * 使用 [this] 解析 [resource].
+         */
+        @JvmStatic
+        public fun <C> ResourceResolver<C>.resolve(resource: Resource, context: C) {
+            when (resource) {
+                is ByteArrayResource -> resolveByteArray(resource, context)
+                is StringResource -> resolveString(resource, context)
+                else -> resolveUnknown(resource, context)
+            }
+        }
+    }
+}

simbot-api/src/commonTest/kotlin/message/OfflineImageResolverTests.kt

@@ -0,0 +1,100 @@
+/*
+ *     Copyright (c) 2024. ForteScarlet.
+ *
+ *     Project    https://github.com/simple-robot/simpler-robot
+ *     Email      ForteScarlet@163.com
+ *
+ *     This file is part of the Simple Robot Library (Alias: simple-robot, simbot, etc.).
+ *
+ *     This program 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.
+ *
+ *     This program 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
+ *     Lesser GNU General Public License for more details.
+ *
+ *     You should have received a copy of the Lesser GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+package message
+
+import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlinx.coroutines.test.runTest
+import love.forte.simbot.message.OfflineByteArrayImage
+import love.forte.simbot.message.OfflineImage
+import love.forte.simbot.message.OfflineImage.Companion.toOfflineImage
+import love.forte.simbot.message.OfflineImageResolver
+import love.forte.simbot.message.OfflineImageResolver.Companion.resolve
+import love.forte.simbot.message.OfflineResourceImage
+import love.forte.simbot.resource.Resource
+import kotlin.coroutines.Continuation
+import kotlin.coroutines.resume
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+
+/**
+ *
+ * @author ForteScarlet
+ */
+class OfflineImageResolverTests {
+    private enum class Value {
+        UKN,
+        BA,
+        R
+    }
+
+    @Test
+    fun offlineImageTest() = runTest {
+        val resolver = object : OfflineImageResolver<Continuation<Value>> {
+            override fun resolveUnknown(image: OfflineImage, context: Continuation<Value>) {
+                context.resume(Value.UKN)
+            }
+
+            override fun resolveByteArray(image: OfflineByteArrayImage, context: Continuation<Value>) {
+                context.resume(Value.BA)
+            }
+
+            override fun resolveResource(image: OfflineResourceImage, context: Continuation<Value>) {
+                context.resume(Value.R)
+            }
+        }
+        assertEquals(
+            Value.UKN,
+            suspendCancellableCoroutine { c ->
+                resolver.resolve(
+                    object : OfflineImage {
+                        override fun data(): ByteArray = byteArrayOf()
+                    },
+                    c
+                )
+            }
+        )
+        assertEquals(
+            Value.BA,
+            suspendCancellableCoroutine { c ->
+                resolver.resolve(
+                    byteArrayOf().toOfflineImage(),
+                    c
+                )
+            }
+        )
+        assertEquals(
+            Value.R,
+            suspendCancellableCoroutine { c ->
+                resolver.resolve(
+                    object : Resource {
+                        override fun data(): ByteArray = byteArrayOf()
+                    }.toOfflineImage(),
+                    c
+                )
+            }
+        )
+    }
+
+}