status: allow for package search endpoint

OBS has issues searching for packages in scmsynced projects.
Since we have a list of all the repositories, we can allow
for a search endpoint here.

/search?q=term1&q=term2...

results is JSON

[
   project1/pkgA,
   project2/pkgB
]

obs-status-service/main.go

@@ -20,6 +20,7 @@ package main
 
 import (
 	"bytes"
+	"encoding/json"
 	"flag"
 	"fmt"
 	"io"
@@ -268,6 +269,32 @@ func main() {
 
 		res.Write(BuildStatusSvg(nil, &common.PackageBuildStatus{Package: pkg, Code: "unknown"}))
 	})
+	http.HandleFunc("GET /search", func(res http.ResponseWriter, req *http.Request) {
+		common.LogInfo("GET /serach?" + req.URL.RawQuery)
+		queries := req.URL.Query()
+		if !queries.Has("q") {
+			res.WriteHeader(400)
+			return
+		}
+
+		names := queries["q"]
+		if len(names) < 1 || len(names) > 10 {
+			res.WriteHeader(400)
+			return
+		}
+
+		packages := FindPackages(names)
+		data, err := json.MarshalIndent(packages, "", "   ")
+		if err != nil {
+			res.WriteHeader(500)
+			common.LogError("Error in marshalling data.", err)
+			return
+		}
+
+		res.Write(data)
+		res.WriteHeader(200)
+	})
+
 	http.HandleFunc("GET /buildlog/{Project}/{Package}/{Repository}/{Arch}", func(res http.ResponseWriter, req *http.Request) {
 		prj := req.PathValue("Project")
 		pkg := req.PathValue("Package")

obs-status-service/redis.go

@@ -110,6 +110,33 @@ func FindRepoResults(project, repo string) []*common.BuildResult {
 	return ret
 }
 
+func FindPackages(search_terms []string) []string {
+	RepoStatusLock.RLock()
+	defer RepoStatusLock.RUnlock()
+
+	data := make([]string, 0, 100)
+	for _, repo := range RepoStatus {
+		for _, status := range repo.Status {
+			pkg := status.Package
+			match := true
+			for _, term := range search_terms {
+				match = match && strings.Contains(pkg, term)
+			}
+
+			if match {
+				entry := repo.Project + "/" + repo.Status[0].Package
+				if idx, found := slices.BinarySearch(data, entry); !found {
+					data = slices.Insert(data, idx, entry)
+					if len(data) >= 100 {
+						return data
+					}
+				}
+			}
+		}
+	}
+	return data
+}
+
 func FindAndUpdateProjectResults(project string) []*common.BuildResult {
 	res := FindProjectResults(project)
 	wg := &sync.WaitGroup{}