From 1d7c296d8a05f0bac07fcc47621ec3a5cb95333a Mon Sep 17 00:00:00 2001
From: Andrey Platov <andrey@hardcoreeng.com>
Date: Fri, 1 Oct 2021 15:33:49 +0200
Subject: [PATCH] mongodb `$like` implementation

Signed-off-by: Andrey Platov <andrey@hardcoreeng.com>
---
 packages/core/src/predicate.ts |  4 +---
 server/mongo/src/storage.ts    | 20 +++++++++++++++++++-
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/packages/core/src/predicate.ts b/packages/core/src/predicate.ts
index e9e19b5816..02e445c2cd 100644
--- a/packages/core/src/predicate.ts
+++ b/packages/core/src/predicate.ts
@@ -19,8 +19,6 @@ import type { Doc } from './classes'
 type Predicate = (docs: Doc[]) => Doc[]
 type PredicateFactory = (pred: any, propertyKey: string) => Predicate
 
-const likeSymbol = '%'
-
 const predicates: Record<string, PredicateFactory> = {
   $in: (o: any, propertyKey: string): Predicate => {
     if (!Array.isArray(o)) {
@@ -36,7 +34,7 @@ const predicates: Record<string, PredicateFactory> = {
   },
 
   $like: (query: string, propertyKey: string): Predicate => {
-    const searchString = query.split(likeSymbol).join('.*')
+    const searchString = query.split('%').join('.*')
     const regex = RegExp(`^${searchString}$`, 'i')
     return (docs: Doc[]): Doc[] => {
       const result: Doc[] = []
diff --git a/server/mongo/src/storage.ts b/server/mongo/src/storage.ts
index a41ac8e623..54419e98f7 100644
--- a/server/mongo/src/storage.ts
+++ b/server/mongo/src/storage.ts
@@ -35,8 +35,26 @@ abstract class MongoAdapterBase extends TxProcessor {
   async init (): Promise<void> {}
 
   private translateQuery<T extends Doc> (clazz: Ref<Class<T>>, query: DocumentQuery<T>): Filter<Document> {
+    const translated: any = {}
+    for (const key in query) {
+      const value = (query as any)[key]
+      if (typeof value === 'object') {
+        const keys = Object.keys(value)
+        if (keys[0] === '$like') {
+          const pattern = value.$like as string
+          translated[key] = {
+            $regex: `^${pattern.split('%').join('.*')}$`,
+            $options: 'i'
+          }
+          continue
+        }
+      }
+      translated[key] = value
+    }
     const classes = this.hierarchy.getDescendants(clazz)
-    return Object.assign({}, query, { _class: { $in: classes } })
+    translated._class = { $in: classes }
+    // return Object.assign({}, query, { _class: { $in: classes } })
+    return translated
   }
 
   private async lookup<T extends Doc> (clazz: Ref<Class<T>>, query: DocumentQuery<T>, options: FindOptions<T>): Promise<FindResult<T>> {