move stuff around until it feels right

2021-12-26 12:06:06 -06:00
parent d10618e3c1
commit 894e6abb26
35 changed files with 30 additions and 22 deletions
--- a/library/renderer.ts
+++ b/library/renderer.ts
@@ -0,0 +1,100 @@
+import type { Subscription } from "rxjs"
+import { Subject } from "rxjs"
+import { concatMap } from "rxjs/operators"
+import { Container } from "./container.js"
+import type { CommandInteraction, ComponentInteraction } from "./interaction"
+import type { Message, MessageOptions } from "./message"
+import type { Node } from "./node.js"
+
+// keep track of interaction ids which have replies,
+// so we know whether to call reply() or followUp()
+const repliedInteractionIds = new Set<string>()
+
+type UpdatePayload = {
+  options: MessageOptions
+  action: "update" | "deactivate"
+}
+
+export class Renderer {
+  readonly nodes = new Container<Node<unknown>>()
+  private componentInteraction?: ComponentInteraction
+  private message?: Message
+  private updates = new Subject<UpdatePayload>()
+  private updateSubscription: Subscription
+  private active = true
+
+  constructor(private interaction: CommandInteraction) {
+    this.updateSubscription = this.updates
+      .pipe(concatMap((payload) => this.updateMessage(payload)))
+      .subscribe({ error: console.error })
+  }
+
+  render() {
+    if (!this.active) {
+      console.warn("Attempted to update a deactivated message")
+      return
+    }
+
+    this.updates.next({
+      options: this.getMessageOptions(),
+      action: "update",
+    })
+  }
+
+  deactivate() {
+    this.active = false
+    this.updates.next({
+      options: this.getMessageOptions(),
+      action: "deactivate",
+    })
+  }
+
+  handleComponentInteraction(interaction: ComponentInteraction) {
+    this.componentInteraction = interaction
+    for (const node of this.nodes) {
+      if (node.handleComponentInteraction(interaction)) {
+        return true
+      }
+    }
+  }
+
+  private getMessageOptions(): MessageOptions {
+    const options: MessageOptions = {
+      content: "",
+      embeds: [],
+      actionRows: [],
+    }
+    for (const node of this.nodes) {
+      node.modifyMessageOptions(options)
+    }
+    return options
+  }
+
+  private async updateMessage({ options, action }: UpdatePayload) {
+    if (action === "deactivate" && this.message) {
+      this.updateSubscription.unsubscribe()
+      await this.message.disableComponents()
+      return
+    }
+
+    if (this.componentInteraction) {
+      const promise = this.componentInteraction.update(options)
+      this.componentInteraction = undefined
+      await promise
+      return
+    }
+
+    if (this.message) {
+      await this.message.edit(options)
+      return
+    }
+
+    if (repliedInteractionIds.has(this.interaction.id)) {
+      this.message = await this.interaction.followUp(options)
+      return
+    }
+
+    repliedInteractionIds.add(this.interaction.id)
+    this.message = await this.interaction.reply(options)
+  }
+}