Add user/organization code search (#19977)

Fixes #19925 

Screenshots:

![attels](https://user-images.githubusercontent.com/165205/173864718-fe789429-55bc-4cad-808c-9f02f335cddf.png)

1 files changed, 65 insertions, 60 deletions

diff --git a/routers/web/explore/code.go b/routers/web/explore/code.go
index 3afb2110d9..2357b34fd0 100644
--- a/routers/web/explore/code.go
+++ b/routers/web/explore/code.go
@@ -34,86 +34,91 @@ func Code(ctx *context.Context) {
 
 	language := ctx.FormTrim("l")
 	keyword := ctx.FormTrim("q")
+
+	queryType := ctx.FormTrim("t")
+	isMatch := queryType == "match"
+
+	ctx.Data["Keyword"] = keyword
+	ctx.Data["Language"] = language
+	ctx.Data["queryType"] = queryType
+	ctx.Data["PageIsViewCode"] = true
+
+	if keyword == "" {
+		ctx.HTML(http.StatusOK, tplExploreCode)
+		return
+	}
+
 	page := ctx.FormInt("page")
 	if page <= 0 {
 		page = 1
 	}
 
-	queryType := ctx.FormTrim("t")
-	isMatch := queryType == "match"
+	var (
+		repoIDs []int64
+		err     error
+		isAdmin bool
+	)
+	if ctx.Doer != nil {
+		isAdmin = ctx.Doer.IsAdmin
+	}
 
-	if keyword != "" {
-		var (
-			repoIDs []int64
-			err     error
-			isAdmin bool
-		)
-		if ctx.Doer != nil {
-			isAdmin = ctx.Doer.IsAdmin
+	// guest user or non-admin user
+	if ctx.Doer == nil || !isAdmin {
+		repoIDs, err = repo_model.FindUserCodeAccessibleRepoIDs(ctx, ctx.Doer)
+		if err != nil {
+			ctx.ServerError("FindUserCodeAccessibleRepoIDs", err)
+			return
 		}
+	}
 
-		// guest user or non-admin user
-		if ctx.Doer == nil || !isAdmin {
-			repoIDs, err = repo_model.FindUserCodeAccessibleRepoIDs(ctx.Doer)
-			if err != nil {
+	var (
+		total                 int
+		searchResults         []*code_indexer.Result
+		searchResultLanguages []*code_indexer.SearchResultLanguages
+	)
+
+	if (len(repoIDs) > 0) || isAdmin {
+		total, searchResults, searchResultLanguages, err = code_indexer.PerformSearch(ctx, repoIDs, language, keyword, page, setting.UI.RepoSearchPagingNum, isMatch)
+		if err != nil {
+			if code_indexer.IsAvailable() {
 				ctx.ServerError("SearchResults", err)
 				return
 			}
+			ctx.Data["CodeIndexerUnavailable"] = true
+		} else {
+			ctx.Data["CodeIndexerUnavailable"] = !code_indexer.IsAvailable()
 		}
 
-		var (
-			total                 int
-			searchResults         []*code_indexer.Result
-			searchResultLanguages []*code_indexer.SearchResultLanguages
-		)
-
-		if (len(repoIDs) > 0) || isAdmin {
-			total, searchResults, searchResultLanguages, err = code_indexer.PerformSearch(ctx, repoIDs, language, keyword, page, setting.UI.RepoSearchPagingNum, isMatch)
-			if err != nil {
-				if code_indexer.IsAvailable() {
-					ctx.ServerError("SearchResults", err)
-					return
+		loadRepoIDs := make([]int64, 0, len(searchResults))
+		for _, result := range searchResults {
+			var find bool
+			for _, id := range loadRepoIDs {
+				if id == result.RepoID {
+					find = true
+					break
 				}
-				ctx.Data["CodeIndexerUnavailable"] = true
-			} else {
-				ctx.Data["CodeIndexerUnavailable"] = !code_indexer.IsAvailable()
 			}
-
-			loadRepoIDs := make([]int64, 0, len(searchResults))
-			for _, result := range searchResults {
-				var find bool
-				for _, id := range loadRepoIDs {
-					if id == result.RepoID {
-						find = true
-						break
-					}
-				}
-				if !find {
-					loadRepoIDs = append(loadRepoIDs, result.RepoID)
-				}
-			}
-
-			repoMaps, err := repo_model.GetRepositoriesMapByIDs(loadRepoIDs)
-			if err != nil {
-				ctx.ServerError("SearchResults", err)
-				return
+			if !find {
+				loadRepoIDs = append(loadRepoIDs, result.RepoID)
 			}
+		}
 
-			ctx.Data["RepoMaps"] = repoMaps
+		repoMaps, err := repo_model.GetRepositoriesMapByIDs(loadRepoIDs)
+		if err != nil {
+			ctx.ServerError("GetRepositoriesMapByIDs", err)
+			return
 		}
 
-		ctx.Data["Keyword"] = keyword
-		ctx.Data["Language"] = language
-		ctx.Data["queryType"] = queryType
-		ctx.Data["SearchResults"] = searchResults
-		ctx.Data["SearchResultLanguages"] = searchResultLanguages
-		ctx.Data["PageIsViewCode"] = true
-
-		pager := context.NewPagination(total, setting.UI.RepoSearchPagingNum, page, 5)
-		pager.SetDefaultParams(ctx)
-		pager.AddParam(ctx, "l", "Language")
-		ctx.Data["Page"] = pager
+		ctx.Data["RepoMaps"] = repoMaps
 	}
 
+	ctx.Data["SearchResults"] = searchResults
+	ctx.Data["SearchResultLanguages"] = searchResultLanguages
+
+	pager := context.NewPagination(total, setting.UI.RepoSearchPagingNum, page, 5)
+	pager.SetDefaultParams(ctx)
+	pager.AddParam(ctx, "l", "Language")
+	ctx.Data["Page"] = pager
+
 	ctx.HTML(http.StatusOK, tplExploreCode)
 }