Added usage of mongodb for the storage of events and use poodinis for autowiring of components

dub.json

@@ -4,7 +4,8 @@
 		"Johannes Loher"
 	],
 	"dependencies": {
-		"vibe-d": "~>0.7.30"
+		"vibe-d": "~>0.7.30",
+		"poodinis": "~>8.0.0"
 	},
 	"description": "A simple webapplication to edit and view calendar entries",
 	"copyright": "Copyright © 2017, Johannes Loher",

source/app.d

@@ -1,6 +1,15 @@
-import calendarwebapp;
+module app;
+
+import authenticator : Authenticator, MongoDBAuthenticator;
+import calendarwebapp : CalendarWebapp;
+import configuration : StringInjector;
+import event : EventStore, MongoDBEventStore;
+
+import poodinis;
 
 import vibe.core.log : logInfo;
+import vibe.db.mongo.client : MongoClient;
+import vibe.db.mongo.mongo : connectMongoDB;
 import vibe.http.fileserver : serveStaticFiles;
 import vibe.http.router : URLRouter;
 import vibe.http.server : HTTPServerSettings, listenHTTP, MemorySessionStore;
@@ -8,8 +17,16 @@ import vibe.web.web : registerWebInterface;
 
 shared static this()
 {
+    auto dependencies = new shared DependencyContainer();
+    auto db = connectMongoDB("localhost");
+    dependencies.register!MongoClient.existingInstance(db);
+    dependencies.register!(EventStore, MongoDBEventStore);
+    dependencies.register!(Authenticator, MongoDBAuthenticator);
+    dependencies.register!CalendarWebapp;
+    dependencies.register!(ValueInjector!string, StringInjector);
+
     auto router = new URLRouter;
-    router.registerWebInterface(new CalendarWebapp);
+    router.registerWebInterface(dependencies.resolve!CalendarWebapp);
     router.get("*", serveStaticFiles("public"));
 
     auto settings = new HTTPServerSettings;

source/authenticator.d

@@ -0,0 +1,36 @@
+module authenticator;
+
+import poodinis;
+
+import vibe.data.bson : Bson;
+import vibe.db.mongo.client : MongoClient;
+
+interface Authenticator
+{
+    bool checkUser(string username, string password);
+}
+
+class MongoDBAuthenticator : Authenticator
+{
+private:
+    @Autowire MongoClient mongoClient;
+
+    @Value("Database name")
+    string databaseName;
+
+    @Value("Users collection name")
+    string usersCollectionName;
+
+public:
+    bool checkUser(string username, string password)
+    {
+        auto users = mongoClient.getCollection(databaseName ~ "." ~ usersCollectionName);
+        auto result = users.findOne(["username" : username, "password" : password]);
+        return result != Bson(null);
+    }
+}
+
+struct AuthInfo
+{
+    string userName;
+}

source/calendarwebapp.d

@@ -1,20 +1,17 @@
 module calendarwebapp;
 
+import authenticator : Authenticator, AuthInfo;
+
 import core.time : days;
 
 import event;
 
+import poodinis;
+
 import std.datetime.date : Date;
 import std.exception : enforce;
 import std.typecons : Nullable;
 
-import vibe.core.path : Path;
-
-import vibe.data.bson : Bson;
-
-import vibe.db.mongo.database : MongoDatabase;
-import vibe.db.mongo.mongo : connectMongoDB;
-
 import vibe.http.common : HTTPStatusException;
 import vibe.http.server : HTTPServerRequest, HTTPServerResponse;
 import vibe.http.status : HTTPStatus;
@@ -22,11 +19,6 @@ import vibe.web.auth;
 import vibe.web.web : errorDisplay, noRoute, redirect, render, SessionVar,
     terminateSession;
 
-struct AuthInfo
-{
-    string userName;
-}
-
 @requiresAuth class CalendarWebapp
 {
     @noRoute AuthInfo authenticate(scope HTTPServerRequest req, scope HTTPServerResponse res)
@@ -40,10 +32,10 @@ struct AuthInfo
     }
 
 public:
-    @anyAuth @errorDisplay!getLogin void index()
+    @anyAuth void index()
     {
-        auto entries = getEntriesFromFile(fileName);
+        auto events = eventStore.getAllEvents();
-        render!("showevents.dt", entries);
+        render!("showevents.dt", events);
     }
 
     @noAuth void getLogin(string _error = null)
@@ -53,7 +45,7 @@ public:
 
     @noAuth @errorDisplay!getLogin void postLogin(string username, string password)
     {
-        enforce(checkUser(username, password), "Benutzername oder Passwort ungültig");
+        enforce(authenticator.checkUser(username, password), "Benutzername oder Passwort ungültig");
         immutable AuthInfo authInfo = {username};
         auth = authInfo;
         redirect("/");
@@ -73,43 +65,29 @@ public:
     @anyAuth @errorDisplay!getCreate void postCreate(Date begin,
             Nullable!Date end, string description, string name, EventType type, bool shout)
     {
-        import std.array : split, replace;
+        import std.array : replace, split;
+        import vibe.data.bson : BsonObjectID;
 
         if (!end.isNull)
             enforce(end - begin >= 1.days,
                     "Mehrtägige Ereignisse müssen mindestens einen Tag dauern");
+        auto event = Event(BsonObjectID.generate, begin, end, name,
+                description.replace("\r", "").split('\n'), type, shout);
 
-        auto entry = Entry(begin, end, Event("", name,
+        eventStore.addEvent(event);
-                description.replace("\r", "").split('\n'), type, shout));
 
-        auto entries = getEntriesFromFile(fileName) ~ entry;
+        redirect("/");
-        entries.writeEntriesToFile(fileName);
-        render!("showevents.dt", entries);
     }
 
+private:
     struct ValidationErrorData
     {
         string msg;
         string field;
     }
 
-    this()
-    {
-        database = connectMongoDB("localhost").getDatabase("CalendarWebapp");
-    }
-
-private:
-    immutable fileName = Path("events.json");
-
     SessionVar!(AuthInfo, "auth") auth;
 
-    MongoDatabase database;
+    @Autowire EventStore eventStore;
-
+    @Autowire Authenticator authenticator;
-    bool checkUser(string username, string password)
-    {
-        auto users = database["users"];
-        auto result = users.findOne(["_id" : username, "password" : password]);
-        return result != Bson(null);
-    }
-
 }

source/configuration.d

@@ -0,0 +1,24 @@
+module configuration;
+
+import poodinis : ValueInjector;
+
+class StringInjector : ValueInjector!string
+{
+private:
+    string[string] config;
+
+public:
+    this()
+    {
+        // dfmt off
+        config = ["Database name" :           "CalendarWebapp",
+                  "Users collection name":    "users",
+                  "Entries collection name" : "entries"];
+        // dfmt on
+    }
+
+    string get(string key)
+    {
+        return config[key];
+    }
+}

source/event.d

@@ -1,12 +1,68 @@
 module event;
 
-import std.datetime.date;
+import poodinis;
+
+import std.algorithm : map;
+import std.datetime.date : Date;
+import std.range.interfaces : InputRange, inputRangeObject;
 import std.typecons : Nullable;
 
-import vibe.core.file: existsFile, readFileUTF8, writeFileUTF8;
+import vibe.core.file : existsFile, readFileUTF8, writeFileUTF8;
 import vibe.core.path : Path;
-import vibe.data.json : deserializeJson, parseJsonString, serializeToPrettyJson;
+import vibe.data.bson : Bson, BsonObjectID, deserializeBson, serializeToBson;
 import vibe.data.serialization : serializationName = name;
+import vibe.db.mongo.client : MongoClient;
+import vibe.db.mongo.collection : MongoCollection;
+
+interface EventStore
+{
+    Event getEvent(string id);
+    InputRange!Event getAllEvents();
+    void addEvent(Event);
+    InputRange!Event getEventsBeginningBetween(Date begin, Date end);
+}
+
+class MongoDBEventStore : EventStore
+{
+public:
+    Event getEvent(string id)
+    {
+        return mongoClient.getCollection(databaseName ~ "." ~ entriesCollectionName)
+            .findOne(["_id" : id]).deserializeBson!Event;
+    }
+
+    InputRange!Event getAllEvents()
+    {
+        return mongoClient.getCollection(databaseName ~ "." ~ entriesCollectionName)
+            .find().map!(deserializeBson!Event).inputRangeObject;
+    }
+
+    void addEvent(Event event)
+    {
+        if (!event.id.valid)
+            event.id = BsonObjectID.generate;
+
+        mongoClient.getCollection(databaseName ~ "." ~ entriesCollectionName)
+            .insert(event.serializeToBson);
+    }
+
+    InputRange!Event getEventsBeginningBetween(Date begin, Date end)
+    {
+        return mongoClient.getCollection(databaseName ~ "." ~ entriesCollectionName)
+            .find(["$and" : [["date" : ["$gte" : begin.serializeToBson]], ["date"
+                    : ["$lte" : end.serializeToBson]]]]).map!(deserializeBson!Event)
+            .inputRangeObject;
+    }
+
+private:
+    @Autowire MongoClient mongoClient;
+
+    @Value("Database name")
+    string databaseName;
+
+    @Value("Entries collection name")
+    string entriesCollectionName;
+}
 
 enum EventType
 {
@@ -17,33 +73,13 @@ enum EventType
     Any
 }
 
-struct Entry
-{
-    @serializationName("date") Date begin;
-    @serializationName("end_date") Nullable!Date end;
-    Event event;
-}
-
 struct Event
 {
-    @serializationName("eid") string id;
+    @serializationName("_id") BsonObjectID id;
+    @serializationName("date") Date begin;
+    @serializationName("end_date") Nullable!Date end;
     string name;
     @serializationName("desc") string[] description;
     @serializationName("etype") EventType type;
     bool shout;
 }
-
-Entry[] getEntriesFromFile(in Path fileName)
-{
-    Entry[] entries;
-    if (fileName.existsFile)
-    {
-        deserializeJson(entries, fileName.readFileUTF8.parseJsonString);
-    }
-    return entries;
-}
-
-void writeEntriesToFile(in Entry[] entries, in Path fileName)
-{
-    fileName.writeFileUTF8(entries.serializeToPrettyJson);
-}

views/showevents.dt

@@ -1,27 +1,27 @@
 extends layout.dt
 block content
 	h1 Events
-	- foreach (entry; entries)
+	- foreach (event; events)
 		table
 			tr
 				td begin
-				td #{entry.begin}
+				td #{event.begin}
 			tr
 				td end
-				td #{entry.end}
+				td #{event.end}
 			tr
-				td eid
+				td _id
-				td #{entry.event.id}
+				td #{event.id}
 			tr
 				td name
-				td #{entry.event.name}
+				td #{event.name}
 			tr
 				td desc
-				td #{entry.event.description}
+				td #{event.description}
 			tr
 				td etype
-				td #{entry.event.type}
+				td #{event.type}
 			tr
 				td shout
-				td #{entry.event.shout}
+				td #{event.shout}
 		hr