Refactor routers directory (#15800)

* refactor routers directory

* move func used for web and api to common

* make corsHandler a function to prohibit side efects

* rm unused func

Co-authored-by: 6543 <6543@obermui.de>

routers/web/repo/search.go

@@ -0,0 +1,55 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package repo
+
+import (
+	"net/http"
+	"strings"
+
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/context"
+	code_indexer "code.gitea.io/gitea/modules/indexer/code"
+	"code.gitea.io/gitea/modules/setting"
+)
+
+const tplSearch base.TplName = "repo/search"
+
+// Search render repository search page
+func Search(ctx *context.Context) {
+	if !setting.Indexer.RepoIndexerEnabled {
+		ctx.Redirect(ctx.Repo.RepoLink, 302)
+		return
+	}
+	language := strings.TrimSpace(ctx.Query("l"))
+	keyword := strings.TrimSpace(ctx.Query("q"))
+	page := ctx.QueryInt("page")
+	if page <= 0 {
+		page = 1
+	}
+	queryType := strings.TrimSpace(ctx.Query("t"))
+	isMatch := queryType == "match"
+
+	total, searchResults, searchResultLanguages, err := code_indexer.PerformSearch([]int64{ctx.Repo.Repository.ID},
+		language, keyword, page, setting.UI.RepoSearchPagingNum, isMatch)
+	if err != nil {
+		ctx.ServerError("SearchResults", err)
+		return
+	}
+	ctx.Data["Keyword"] = keyword
+	ctx.Data["Language"] = language
+	ctx.Data["queryType"] = queryType
+	ctx.Data["SourcePath"] = ctx.Repo.Repository.HTMLURL()
+	ctx.Data["SearchResults"] = searchResults
+	ctx.Data["SearchResultLanguages"] = searchResultLanguages
+	ctx.Data["RequireHighlightJS"] = true
+	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.HTML(http.StatusOK, tplSearch)
+}