Integrate file access into API

Makefile

@@ -4,7 +4,7 @@ BINARY=maputnik
 
 all: $(BINARY)
 
-$(BINARY): $(SOURCES)
+$(BINARY): $(SOURCES) bindata_assetfs.go
 	go build -o ${BINARY}
 
 editor/node_modules:
@@ -14,8 +14,8 @@ editor/public: editor/node_modules
 	cd editor && npm run build
 
 bindata_assetfs.go: editor/public
-	go-bindata-assetfs editor/public/
+	go-bindata-assetfs --prefix "editor/" editor/public
 
 .PHONY: clean
 clean:
-	rm -rf editor/public && rm -rf maputnik
+	rm -rf editor/public && rm -f bindata_assetfs.go && rm -f maputnik

api.go

@@ -2,14 +2,51 @@ package main
 
 import (
 	"encoding/json"
+	"io"
+	"log"
 	"net/http"
+	"os"
+	"path/filepath"
+
+	"github.com/gorilla/mux"
 )
 
-// Return all current deployments
+func StyleFileAccessor(filename string) styleFileAccessor {
-func foo(w http.ResponseWriter, r *http.Request) {
+	file, err := os.Open(filename)
+	if err != nil {
+		log.Fatalf("Can not access style file: %s", err.Error())
+	}
+
+	return styleFileAccessor{file}
+}
+
+// Allows access to a single style file
+type styleFileAccessor struct {
+	file *os.File
+}
+
+func (fa styleFileAccessor) ListFiles(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
 	encoder := json.NewEncoder(w)
-	encoder.Encode(map[string]string{
+	encoder.Encode([]string{filepath.Base(fa.file.Name())})
-		"foo": "bar",
+}
-	})
+
+func (fa styleFileAccessor) ReadFile(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	_ = vars["filename"]
+
+	//TODO: Choose right file
+	// right now we just return the single file we know of
+	w.Header().Set("Content-Type", "application/json")
+	if _, err := io.Copy(w, fa.file); err != nil {
+		log.Fatalf("Can not copy from file to request: %s", err.Error())
+	}
+}
+
+func (fa styleFileAccessor) SaveFile(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+
+	if _, err := io.Copy(fa.file, r.Body); err != nil {
+		log.Fatalf("Can not copy from request to file: %s", err.Error())
+	}
 }

maputnik.go

@@ -1,8 +1,10 @@
 package main
 
 import (
+	"fmt"
 	"net/http"
 	"os"
+	"path/filepath"
 
 	"github.com/gorilla/handlers"
 	"github.com/gorilla/mux"
@@ -31,26 +33,28 @@ func main() {
 
 		router := mux.NewRouter().StrictSlash(true)
 
-		// Register websocket to notify we clients about file changes
 		filename := c.String("file")
-
 		if filename != "" {
-			/*
+			fmt.Printf("%s is accessible via Maputnik\n", filename)
-				router.Path("/files").Methods("GET").HandlerFunc(listFiles)
+			// Allow access to reading and writing file on the local system
-				router.Path("/files/{filename}").Methods("PUT").HandlerFunc(saveFile)
+			path, _ := filepath.Abs(filename)
-			*/
+			accessor := StyleFileAccessor(path)
+			router.Path("/files").Methods("GET").HandlerFunc(accessor.ListFiles)
+			router.Path("/files/{filename}").Methods("GET").HandlerFunc(accessor.ReadFile)
+			router.Path("/files/{filename}").Methods("PUT").HandlerFunc(accessor.SaveFile)
 
+			// Register websocket to notify we clients about file changes
 			if c.Bool("watch") {
 				router.Path("/ws").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 					filewatch.ServeWebsocketFileWatcher(filename, w, r)
 				})
 			}
-
 		}
 
 		router.PathPrefix("/").Handler(http.StripPrefix("/", gui))
-
 		loggedRouter := handlers.LoggingHandler(os.Stdout, router)
+
+		fmt.Println("Exposing Maputnik on http://localhost:8000")
 		return http.ListenAndServe(":8000", loggedRouter)
 	}