Code refactor, adding GoLand workspace with Bazel plugin.

api/beacon/BUILD.bazel

@@ -0,0 +1,8 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["api.go"],
+    importpath = "git.eve.moe/jackyyf/navigator/api/beacon",
+    visibility = ["//visibility:public"],
+)

api/beacon/api.go

@@ -0,0 +1,18 @@
+package beacon
+
+import (
+	"fmt"
+	"net/http"
+)
+
+var (
+	apiServeMux = http.NewServeMux()
+)
+
+func init() {
+	http.Handle("/beacon/", http.StripPrefix("/beacon", apiServeMux))
+}
+
+func RegisterApi(version string, handler http.Handler) {
+	apiServeMux.Handle(fmt.Sprintf("/%s/", version), http.StripPrefix(fmt.Sprint("/", version), handler))
+}

api/beacon/v1/BUILD.bazel

@@ -0,0 +1,13 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["api.go"],
+    importpath = "git.eve.moe/jackyyf/navigator/api/beacon/v1",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//api/beacon:go_default_library",
+        "//mapping:go_default_library",
+        "//utils:go_default_library",
+    ],
+)

api/beacon/v1/api.go

@@ -0,0 +1,33 @@
+package v1
+
+import (
+	"encoding/json"
+	"git.eve.moe/jackyyf/navigator/api/beacon"
+	"git.eve.moe/jackyyf/navigator/mapping"
+	"git.eve.moe/jackyyf/navigator/utils"
+	"net/http"
+)
+
+var (
+	serveMux = http.NewServeMux()
+)
+
+func init() {
+	serveMux.HandleFunc("/getNodes", func(resp http.ResponseWriter, req *http.Request) {
+		host := utils.GetRemoteIP(req)
+		nodes := mapping.GetNodes()
+		if nodes == nil {
+			utils.ResponseWithJsonError(resp, http.StatusInternalServerError, "Unable to get nodes")
+			return
+		}
+		suffix := mapping.GetSuffix(host)
+		resp.Header().Set("Content-Type", "application/json")
+		resp.WriteHeader(http.StatusOK)
+		jsonEncoder := json.NewEncoder(resp)
+		jsonEncoder.Encode(map[string]interface{}{
+			"nodes":  nodes,
+			"suffix": suffix,
+		})
+	})
+	beacon.RegisterApi("v1", serveMux)
+}