feat: add run command

packages/game/src/Quest.ts

@@ -1,11 +1,16 @@
+/* eslint-disable no-await-in-loop */
 import { IQuest, IStage } from './schema'
 import { Stage } from './Stage'
+import { ICommand, IFileExistenceChecker } from './types'
 
 export class Quest {
   private stages: Stage[]
   private quest: IQuest
 
-  constructor(quest: IQuest) {
+  constructor(
+    quest: IQuest,
+    private checker: IFileExistenceChecker
+  ) {
     this.quest = quest
     this.stages = quest.stages.map((stage: IStage) => new Stage(stage))
   }
@@ -13,4 +18,18 @@ export class Quest {
   getActiveStages(completed: string[]) {
     return this.stages.filter((stage) => stage.active(completed))
   }
+
+  async findSatisfiedStage(
+    command: ICommand,
+    completed: string[]
+  ): Promise<string | null> {
+    const stages = this.getActiveStages(completed)
+    for (const stage of stages) {
+      const satisfies = await stage.satisfies(command, this.checker)
+      if (satisfies) {
+        return stage.id
+      }
+    }
+    return null
+  }
 }

packages/game/src/Session.ts

@@ -1,14 +1,18 @@
 import { Quest } from './Quest'
 import { IQuest } from './schema'
-import { ISession } from './types'
+import { ICommand, ISession, IFileExistenceChecker } from './types'
 
 export class Session implements ISession {
   private completed: string[] = []
   private quest: Quest
 
-  constructor({ completedStages }: ISession, quest: IQuest) {
+  constructor(
+    { completedStages }: ISession,
+    quest: IQuest,
+    checker: IFileExistenceChecker
+  ) {
     this.completed = completedStages
-    this.quest = new Quest(quest)
+    this.quest = new Quest(quest, checker)
   }
 
   get completedStages() {
@@ -22,4 +26,12 @@ export class Session implements ISession {
   getActiveStages(): string[] {
     return this.quest.getActiveStages(this.completed).map((stage) => stage.id)
   }
+
+  async runCommand(command: ICommand) {
+    const stageId = await this.quest.findSatisfiedStage(command, this.completed)
+    if (stageId) {
+      this.complete(stageId)
+    }
+    return stageId
+  }
 }