create API

app/controllers/webserver.go

@@ -1,10 +1,13 @@
 package controllers
 
 import (
+	"encoding/json"
 	"fmt"
 	"github.com/taqboz/gotello/config"
 	"html/template"
+	"log"
 	"net/http"
+	"regexp"
 )
 
 // テンプレートの読み込み
@@ -28,9 +31,47 @@ func viewControllerHandler(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+// 以下APIの処理
+type APIResult struct {
+	Result interface{} `json:"result"`
+	Code   int         `json:"code"`
+}
+
+func APIResponse(w http.ResponseWriter, result interface{}, code int)  {
+	res := APIResult{Result: result, Code: code}
+	js, err := json.Marshal(res)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	w.Write(js)
+}
+
+var apiValidPath = regexp.MustCompile("^/api/(command|shake|video)")
+
+func apiMakeHandler(fn func(w http.ResponseWriter, r *http.Request)) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		m := apiValidPath.FindStringSubmatch(r.URL.Path)
+		if len(m) == 0 {
+			// TODO
+			return
+		}
+		fn(w, r)
+	}
+}
+
+func apiCommandHandler(w http.ResponseWriter, r *http.Request)  {
+	command := r.FormValue("command")
+	log.Printf("action=apiCommandHandler command=%s", command)
+	APIResponse(w, "OK", http.StatusOK)
+}
+
 func StartWebServer() error {
 	http.HandleFunc("/", viewIndexHandler)
 	http.HandleFunc("/controller/", viewControllerHandler)
+	http.HandleFunc("/api/command/", apiMakeHandler(apiCommandHandler))
 	// "static"をファイルサーバーとして使用する
 	http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))
 	return http.ListenAndServe(fmt.Sprintf("%s:%d", config.Config.Address, config.Config.Port), nil)

gotello.log

@@ -471,3 +471,5 @@ created by net/http.(*Server).Serve
 	/usr/local/Cellar/go/1.12.7/libexec/src/net/http/server.go:2884 +0x2f4
 2019/08/14 11:28:18 main.go:12: listen tcp 0.0.0.0:8080: bind: address already in use
 2019/08/14 11:28:38 webserver.go:15: open app/view/index.html: no such file or directory
+2019/08/14 13:40:01 webserver.go:67: action=apiCommandHandler command=ceaseRotation
+2019/08/14 13:40:02 webserver.go:67: action=apiCommandHandler command=takeOff