From 319c1d22b067b75064444cfecd39ae909b8e96b9 Mon Sep 17 00:00:00 2001
From: ShashaankS <shashaank.srivastava04@gmail.com>
Date: Mon, 13 Jan 2025 17:29:07 +0530
Subject: [PATCH] Added switch based mapping for filters in searchbar

---
 frontend/src/api/fetchAlgoliaData.ts | 27 ++++++++++++++++++++++++---
 frontend/src/utils/filterMapping.ts  | 20 ++++++++++++++++++++
 2 files changed, 44 insertions(+), 3 deletions(-)
 create mode 100644 frontend/src/utils/filterMapping.ts

diff --git a/frontend/src/api/fetchAlgoliaData.ts b/frontend/src/api/fetchAlgoliaData.ts
index a338705e1c..6a86b7ef94 100644
--- a/frontend/src/api/fetchAlgoliaData.ts
+++ b/frontend/src/api/fetchAlgoliaData.ts
@@ -1,6 +1,7 @@
 import { SearchResponse } from 'algoliasearch'
 import { AlgoliaRequestType, AlgoliaResponseType } from 'types/algolia'
 import { ENVIRONMENT } from 'utils/credentials'
+import { getParamsForFilters } from 'utils/filterMapping'
 import { client } from 'utils/helpers/algoliaClient'
 
 import { getParamsForIndexName } from 'utils/paramsMapping'
@@ -17,17 +18,37 @@ export const fetchAlgoliaData = async <T>(
   }
   try {
     const params = getParamsForIndexName(indexName)
+
+    let filters = ''
+    let searchQuery = query
+
+    const filterRegex = /(\w+)([:><=!]+)([^ ]+)/g
+    let match
+
+    while ((match = filterRegex.exec(query)) !== null) {
+      const [fullMatch, attribute, operator, value] = match
+      filters += `${attribute}${operator}${value} AND `
+      searchQuery = searchQuery.replace(fullMatch, '').trim()
+    }
+
+    filters = filters.trim().replace(/AND$/, '')
+    filters = getParamsForFilters(indexName, filters)
+
+    if (filterKey) {
+      filters = filters ? `(${filters}) AND idx_key:${filterKey}` : `idx_key:${filterKey}`
+    }
+
     const request: AlgoliaRequestType = {
       attributesToHighlight: [],
       hitsPerPage: 25,
       indexName: `${ENVIRONMENT}_${indexName}`,
       page: currentPage - 1,
-      query: query,
+      query: searchQuery,
       removeWordsIfNoResults: 'allOptional',
       ...params,
     }
-    if (filterKey) {
-      request.filters = `idx_key: ${filterKey}`
+    if (filters) {
+      request.filters = filters
     }
 
     const { results } = await client.search({
diff --git a/frontend/src/utils/filterMapping.ts b/frontend/src/utils/filterMapping.ts
new file mode 100644
index 0000000000..13cfb8bd43
--- /dev/null
+++ b/frontend/src/utils/filterMapping.ts
@@ -0,0 +1,20 @@
+export const getParamsForFilters = (indexName: string, filter: string) => {
+  filter = filter.trim()
+  switch (indexName) {
+    case 'projects':
+      switch (true) {
+        case /^contributors([><]=?|=)(\d+)$/.test(filter):
+          return filter.replace(/^contributors([><]=?|=)(\d+)$/, 'idx_contributors_count$1$2')
+        case /^stars([><]=?|=)(\d+)$/.test(filter):
+          return filter.replace(/^stars([><]=?|=)(\d+)$/, 'idx_stars_count$1$2')
+        case /^forks([><]=?|=)(\d+)$/.test(filter):
+          return filter.replace(/^forks([><]=?|=)(\d+)$/, 'idx_forks_count$1$2')
+        case /^is:([a-zA-Z]+)$/.test(filter):
+          return filter.replace(/^is:([a-zA-Z]+)$/, 'idx_type:$1')
+        default:
+          return filter
+      }
+    default:
+      return filter
+  }
+}