impl http api server for serving index.html, api calls

spike/review/reinvent/ezmded/server/server.go

@@ -9,6 +9,8 @@ import (
 	"net/http"
 	"os"
 	"path"
+	"path/filepath"
+	"regexp"
 	"strings"
 	"time"
 
@@ -241,5 +243,45 @@ func (server *Server) apiV0FilesIDDelHandler(w http.ResponseWriter, r *http.Requ
 }
 
 func (server *Server) apiV0SearchHandler(w http.ResponseWriter, r *http.Request) error {
-	return errors.New("not impl" + r.URL.Path)
+	query := r.URL.Query().Get("q")
+	queries := strings.Split(query, " ")
+	if len(queries) == 0 {
+		w.Write([]byte(`[]`))
+		return nil
+	}
+	patterns := []*regexp.Regexp{}
+	unsafepattern := regexp.MustCompile(`[^a-zA-Z0-9]`)
+	for _, query := range queries {
+		if len(query) > 0 {
+			query = unsafepattern.ReplaceAllString(query, ".")
+			patterns = append(patterns, regexp.MustCompile(query))
+		}
+	}
+	if len(patterns) == 0 {
+		w.Write([]byte(`[]`))
+		return nil
+	}
+	results := []string{}
+	if err := filepath.Walk(path.Dir(server.diskFilePath("id")), func(p string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if info.IsDir() {
+			return nil
+		}
+		b, err := ioutil.ReadFile(p)
+		if err != nil {
+			return err
+		}
+		for _, pattern := range patterns {
+			if !pattern.Match(b) {
+				return nil
+			}
+		}
+		results = append(results, path.Base(p))
+		return err
+	}); err != nil {
+		return err
+	}
+	return json.NewEncoder(w).Encode(results)
 }