Interim commit; started work on routes

src/api/routes/routes.go

@@ -0,0 +1,64 @@
+// Package routes contains endpoint handlers for the myPrayerJournal API.
+package routes
+
+import (
+	"database/sql"
+	"encoding/json"
+	"log"
+	"net/http"
+
+	"github.com/danieljsummers/myPrayerJournal/src/api/data"
+	"github.com/julienschmidt/httprouter"
+)
+
+/* Support */
+
+// Set the content type, the HTTP error code, and return the error message.
+func sendError(w http.ResponseWriter, r *http.Request, err error) {
+	m := map[string]string{"error": err.Error()}
+	j, jErr := json.Marshal(m)
+	if jErr != nil {
+		log.Print("Error creating error JSON: " + jErr.Error())
+	}
+	w.WriteHeader(500)
+	w.Header().Set("Content-Type", "application/json")
+	w.Write(j)
+}
+
+// Set the content type and return the JSON to the user.
+func sendJSON(w http.ResponseWriter, r *http.Request, result interface{}) {
+	payload, err := json.Marshal(result)
+	if err != nil {
+		sendError(w, r, err)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.Write([]byte("{ data: "))
+	w.Write(payload)
+	w.Write([]byte(" }"))
+}
+
+/* Handlers */
+
+func journal(w http.ResponseWriter, r *http.Request, _ httprouter.Params, db *sql.DB) {
+	reqs := data.Journal(db, "TODO: get user ID")
+	if reqs == nil {
+		reqs = []data.JournalRequest{}
+	}
+	sendJSON(w, r, reqs)
+}
+
+/* Wrappers */
+
+func withDB(fn func(w http.ResponseWriter, r *http.Request, p httprouter.Params, db *sql.DB), db *sql.DB) httprouter.Handle {
+	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+		fn(w, r, p, db)
+	}
+}
+
+// Routes returns a configured router to handle all incoming requests.
+func Routes(db *sql.DB) *httprouter.Router {
+	router := httprouter.New()
+	router.GET("/journal", withDB(journal, db))
+	return router
+}