Global code search support (#3664)

* add global code search on explore

* fix bug when no anyone public repos

* change the icon

* fix typo and add UnitTypeCode check for login non-admin user

* fix ui description when no match

2 files changed, 25 insertions, 8 deletions

diff --git a/modules/indexer/repo.go b/modules/indexer/repo.go
index ffb1dc1e62..4d1e792152 100644
--- a/modules/indexer/repo.go
+++ b/modules/indexer/repo.go
@@ -16,6 +16,7 @@ import (
 	"github.com/blevesearch/bleve/analysis/token/lowercase"
 	"github.com/blevesearch/bleve/analysis/token/unique"
 	"github.com/blevesearch/bleve/analysis/tokenizer/unicode"
+	"github.com/blevesearch/bleve/search/query"
 	"github.com/ethantkoenig/rupture"
 )
 
@@ -158,6 +159,7 @@ func DeleteRepoFromIndexer(repoID int64) error {
 
 // RepoSearchResult result of performing a search in a repo
 type RepoSearchResult struct {
+	RepoID     int64
 	StartIndex int
 	EndIndex   int
 	Filename   string
@@ -166,17 +168,29 @@ type RepoSearchResult struct {
 
 // SearchRepoByKeyword searches for files in the specified repo.
 // Returns the matching file-paths
-func SearchRepoByKeyword(repoID int64, keyword string, page, pageSize int) (int64, []*RepoSearchResult, error) {
+func SearchRepoByKeyword(repoIDs []int64, keyword string, page, pageSize int) (int64, []*RepoSearchResult, error) {
 	phraseQuery := bleve.NewMatchPhraseQuery(keyword)
 	phraseQuery.FieldVal = "Content"
 	phraseQuery.Analyzer = repoIndexerAnalyzer
-	indexerQuery := bleve.NewConjunctionQuery(
-		numericEqualityQuery(repoID, "RepoID"),
-		phraseQuery,
-	)
+
+	var indexerQuery query.Query
+	if len(repoIDs) > 0 {
+		var repoQueries = make([]query.Query, 0, len(repoIDs))
+		for _, repoID := range repoIDs {
+			repoQueries = append(repoQueries, numericEqualityQuery(repoID, "RepoID"))
+		}
+
+		indexerQuery = bleve.NewConjunctionQuery(
+			bleve.NewDisjunctionQuery(repoQueries...),
+			phraseQuery,
+		)
+	} else {
+		indexerQuery = phraseQuery
+	}
+
 	from := (page - 1) * pageSize
 	searchRequest := bleve.NewSearchRequestOptions(indexerQuery, pageSize, from, false)
-	searchRequest.Fields = []string{"Content"}
+	searchRequest.Fields = []string{"Content", "RepoID"}
 	searchRequest.IncludeLocations = true
 
 	result, err := repoIndexer.Search(searchRequest)
@@ -199,6 +213,7 @@ func SearchRepoByKeyword(repoID int64, keyword string, page, pageSize int) (int6
 			}
 		}
 		searchResults[i] = &RepoSearchResult{
+			RepoID:     int64(hit.Fields["RepoID"].(float64)),
 			StartIndex: startIndex,
 			EndIndex:   endIndex,
 			Filename:   filenameOfIndexerID(hit.ID),
diff --git a/modules/search/search.go b/modules/search/search.go
index db0c0a6168..9b93fe58fb 100644
--- a/modules/search/search.go
+++ b/modules/search/search.go
@@ -17,6 +17,7 @@ import (
 
 // Result a search result to display
 type Result struct {
+	RepoID         int64
 	Filename       string
 	HighlightClass string
 	LineNumbers    []int
@@ -98,6 +99,7 @@ func searchResult(result *indexer.RepoSearchResult, startIndex, endIndex int) (*
 		index += len(line)
 	}
 	return &Result{
+		RepoID:         result.RepoID,
 		Filename:       result.Filename,
 		HighlightClass: highlight.FileNameToHighlightClass(result.Filename),
 		LineNumbers:    lineNumbers,
@@ -106,12 +108,12 @@ func searchResult(result *indexer.RepoSearchResult, startIndex, endIndex int) (*
 }
 
 // PerformSearch perform a search on a repository
-func PerformSearch(repoID int64, keyword string, page, pageSize int) (int, []*Result, error) {
+func PerformSearch(repoIDs []int64, keyword string, page, pageSize int) (int, []*Result, error) {
 	if len(keyword) == 0 {
 		return 0, nil, nil
 	}
 
-	total, results, err := indexer.SearchRepoByKeyword(repoID, keyword, page, pageSize)
+	total, results, err := indexer.SearchRepoByKeyword(repoIDs, keyword, page, pageSize)
 	if err != nil {
 		return 0, nil, err
 	}