From a3e64053aa34dcdea86ddfb8407cdef35094d8a8 Mon Sep 17 00:00:00 2001
From: Vordgi <sasha2822222@gmail.com>
Date: Thu, 14 Apr 2022 20:15:27 +0400
Subject: [PATCH] NCM-6 cache minification keys

---
 src/lib/converters/ConverterMinified.ts | 28 +++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/lib/converters/ConverterMinified.ts b/src/lib/converters/ConverterMinified.ts
index 50d3f17..f5ae351 100644
--- a/src/lib/converters/ConverterMinified.ts
+++ b/src/lib/converters/ConverterMinified.ts
@@ -1,9 +1,16 @@
 import type { LoaderContext } from 'webpack/types';
 import type ConverterBase from './ConverterBase';
+import fs from 'fs';
+import path from 'path';
+
+const cacheFolderPath = path.join(process.cwd(), '.next/cache/next-classnames-minifier');
+const cacheFilePath = path.join(cacheFolderPath, 'minified.xml');
 
 class ConverterMinified implements ConverterBase {
   cache: {[resource: string]: {[className: string]: string}} = {};
 
+  cacheFile;
+
   symbols: string[] = [
     'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
     'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
@@ -18,6 +25,26 @@ class ConverterMinified implements ConverterBase {
 
   nameMap = [0];
 
+  constructor() {
+    if (!fs.existsSync(cacheFolderPath)) fs.mkdirSync(cacheFolderPath, {recursive: true});
+
+    if (fs.existsSync(cacheFilePath)) {
+      this.cacheFile = fs.createWriteStream(cacheFilePath, {flags: 'a'})
+      const cacheRow = fs.readFileSync(cacheFilePath, {encoding: 'utf-8'});
+      cacheRow.split('\n').forEach(row => {
+        if (!row) return;
+        const matched = row.match(/<resource>(.*)<\/resource><name>(.*)<\/name><class>(.*)<\/class>/);
+        if (!matched) return;
+        const resource = matched[1];
+
+        if (!this.cache[resource]) this.cache[resource] = {};
+        this.cache[resource][matched[2]] = matched[3];
+      });
+    } else {
+      this.cacheFile = fs.createWriteStream(cacheFilePath);
+    }
+  }
+
   getClassName() {
     const symbolsCount = 62;
     if (this.lastIndex >= this.nextLoopEndsWith) {
@@ -49,6 +76,7 @@ class ConverterMinified implements ConverterBase {
 
     const minifiedClassName = this.getClassName();
     currentCache[origName] = minifiedClassName;
+    this.cacheFile.write(`<resource>${resourcePath}</resource><name>${origName}</name><class>${minifiedClassName}</class>\n`);
     this.lastIndex += 1;
     return minifiedClassName;
   }