From d612b2d6af69516e1d1909972c9c94632df8510a Mon Sep 17 00:00:00 2001
From: wancat <wancat@wancat.cc>
Date: Fri, 8 Mar 2024 00:13:38 +0800
Subject: [PATCH] feat: add file matcher

---
 .eslintrc.js                               |  2 +
 packages/game/src/condition/FileMatcher.ts | 15 ++++
 packages/game/src/types.ts                 | 14 ++++
 packages/game/test/asyncCondition.test.ts  | 92 ++++++++++++++++++++++
 4 files changed, 123 insertions(+)
 create mode 100644 packages/game/src/condition/FileMatcher.ts
 create mode 100644 packages/game/test/asyncCondition.test.ts

diff --git a/.eslintrc.js b/.eslintrc.js
index d53065a..f1ee5a6 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -66,6 +66,8 @@ module.exports = {
     '@typescript-eslint/no-useless-constructor': 'error',
     'no-empty-function': 'off',
     '@typescript-eslint/no-empty-function': 'error',
+    'no-shadow': 'off',
+    '@typescript-eslint/no-shadow': 'error',
   },
   overrides: [
     {
diff --git a/packages/game/src/condition/FileMatcher.ts b/packages/game/src/condition/FileMatcher.ts
new file mode 100644
index 0000000..ac9f709
--- /dev/null
+++ b/packages/game/src/condition/FileMatcher.ts
@@ -0,0 +1,15 @@
+import { FileInput, IFileExistenceChecker } from '../types'
+
+interface FileExistenceInput extends FileInput {
+  exists: boolean
+}
+
+export async function checkFiles(
+  checker: IFileExistenceChecker,
+  files: FileExistenceInput[]
+) {
+  const existences = await Promise.all(
+    files.map((file) => checker.exists(file))
+  )
+  return existences.every((exists, index) => exists === files[index].exists)
+}
diff --git a/packages/game/src/types.ts b/packages/game/src/types.ts
index 8227198..57724a9 100644
--- a/packages/game/src/types.ts
+++ b/packages/game/src/types.ts
@@ -13,3 +13,17 @@ export interface ICondition {
   or?: ICondition[]
   not?: ICondition
 }
+
+export enum FileType {
+  FILE = 'file',
+  FOLDER = 'folder',
+}
+
+export interface FileInput {
+  path: string
+  type: FileType
+}
+
+export interface IFileExistenceChecker {
+  exists(file: FileInput): Promise<boolean>
+}
diff --git a/packages/game/test/asyncCondition.test.ts b/packages/game/test/asyncCondition.test.ts
new file mode 100644
index 0000000..1a6503a
--- /dev/null
+++ b/packages/game/test/asyncCondition.test.ts
@@ -0,0 +1,92 @@
+import { test, expect } from '@jest/globals'
+import { IFileExistenceChecker, FileType, FileInput } from '../src/types.js'
+import { checkFiles } from '../src/condition/FileMatcher.js'
+
+class MockFileChecker implements IFileExistenceChecker {
+  private files: FileInput[] = [
+    {
+      path: '/home/user/hello.txt',
+      type: FileType.FILE,
+    },
+    {
+      path: '/home/user/world.txt',
+      type: FileType.FILE,
+    },
+    {
+      path: '/home/user/Downloads',
+      type: FileType.FOLDER,
+    },
+  ]
+
+  async exists(file: FileInput): Promise<boolean> {
+    return this.files.some((f) => f.path === file.path && f.type === file.type)
+  }
+}
+
+test('file matcher', async () => {
+  const checker = new MockFileChecker()
+  expect(
+    await checkFiles(checker, [
+      {
+        path: '/home/user/hello.txt',
+        type: FileType.FILE,
+        exists: true,
+      },
+    ])
+  ).toBe(true)
+  expect(
+    await checkFiles(checker, [
+      {
+        path: '/home/user/not-exists.txt',
+        type: FileType.FILE,
+        exists: true,
+      },
+    ])
+  ).toBe(false)
+  expect(
+    await checkFiles(checker, [
+      {
+        path: '/home/user/not-exists.txt',
+        type: FileType.FILE,
+        exists: false,
+      },
+    ])
+  ).toBe(true)
+  expect(
+    await checkFiles(checker, [
+      {
+        path: '/home/user/Downloads',
+        type: FileType.FOLDER,
+        exists: true,
+      },
+    ])
+  ).toBe(true)
+  expect(
+    await checkFiles(checker, [
+      {
+        path: '/home/user/hello.txt',
+        type: FileType.FILE,
+        exists: true,
+      },
+      {
+        path: '/home/user/Downloads',
+        type: FileType.FOLDER,
+        exists: true,
+      },
+    ])
+  ).toBe(true)
+  expect(
+    await checkFiles(checker, [
+      {
+        path: '/home/user/hello.txt',
+        type: FileType.FILE,
+        exists: true,
+      },
+      {
+        path: '/home/user/not-exist.txt',
+        type: FileType.FILE,
+        exists: true,
+      },
+    ])
+  ).toBe(false)
+})