preparing save/update of appointment

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

build.gradle.kts

@@ -13,6 +13,7 @@ spotless {
         importOrder()
         clangFormat("18.1.8").style("file:config/clang-format")
         licenseHeader("/* © SRSoftware 2024 */")
+        toggleOffOn()
     }
 }
 

de.srsoftware.cal.db/src/main/java/de/srsoftware/cal/db/Database.java

@@ -2,7 +2,9 @@
 package de.srsoftware.cal.db;
 
 import de.srsoftware.cal.api.Appointment;
+import de.srsoftware.tools.Calc;
 import de.srsoftware.tools.Result;
+import de.srsoftware.tools.Strings;
 import java.sql.SQLException;
 import java.time.LocalDateTime;
 import java.util.List;
@@ -48,5 +50,11 @@ public interface Database {
 
 	Result<Appointment> loadEvent(long id);
 
+	Result<Appointment> loadEvent(String slug);
+
 	Result<List<String>> findTags(String infix);
+
+	public static String slug(String location, LocalDateTime start) {
+		return Calc.sha256(start + "@" + location).map(Strings::base64).orElse(null);
+	}
 }

de.srsoftware.cal.db/src/main/java/de/srsoftware/cal/db/MariaDB.java

@@ -1,9 +1,10 @@
 /* © SRSoftware 2024 */
 package de.srsoftware.cal.db;
 
+import static de.srsoftware.cal.db.Database.slug;
+import static de.srsoftware.tools.NotImplemented.notImplemented;
 import static de.srsoftware.tools.Optionals.*;
 import static de.srsoftware.tools.Result.transform;
-import static de.srsoftware.tools.Strings.camelCase;
 import static de.srsoftware.tools.jdbc.Condition.*;
 import static de.srsoftware.tools.jdbc.Query.MARK;
 import static java.lang.System.Logger.Level.*;
@@ -12,7 +13,6 @@ import de.srsoftware.cal.BaseAppointment;
 import de.srsoftware.cal.api.Appointment;
 import de.srsoftware.cal.api.Attachment;
 import de.srsoftware.cal.api.Link;
-import de.srsoftware.tools.Calc;
 import de.srsoftware.tools.Error;
 import de.srsoftware.tools.Payload;
 import de.srsoftware.tools.Result;
@@ -40,6 +40,7 @@ public class MariaDB implements Database {
 	private static final String	   MIME	           = "mime";
 	private static final String	   APPOINTMENT_ATTACHMENTS = "appointment_attachments";
 	private static final String	   TAGS	           = "tags";
+	private static final String	   SLUG	           = "slug";
 	private static Connection	   connection;
 
 	private MariaDB(Connection conn) throws SQLException {
@@ -82,10 +83,9 @@ public class MariaDB implements Database {
 			LOG.log(TRACE, () -> "%s: %s".formatted(id, title));
 			var descr = rs.getString("description");
 			if (allEmpty(title, descr)) continue;
-			var start = nullable(rs.getTimestamp("start"));
+			var start = nullable(rs.getTimestamp("start")).map(Timestamp::toLocalDateTime);
 			if (start.isEmpty()) continue;
-			var slug = "%s@%s".formatted(start.get().toLocalDateTime(), camelCase(location.get().replace(",", "")));
-			if (slug.length() > 250) slug = slug.substring(0, 250);
+			var slug = slug(location.get(), start.get());
 			slugMap.put(id, slug);
 		}
 		rs.close();
@@ -107,7 +107,7 @@ public class MariaDB implements Database {
 
 	@Override
 	public Database add(Appointment appointment) {
-		return null;
+		throw notImplemented(this, "add(Appointment)");
 	}
 
 	public static Database connect(String jdbc, String user, String pass) throws SQLException {
@@ -148,6 +148,18 @@ public class MariaDB implements Database {
 		}
 	}
 
+	@Override
+	public Result<Appointment> loadEvent(String slug) {
+		try {
+			var	    rs     = Query.select(ALL).from(APPOINTMENTS).where(SLUG, equal(slug)).exec(connection);
+			Result<Appointment> result = rs.next() ? createAppointmentOf(rs).map(MariaDB::loadExtra) : Error.format("Failed to find appointment with slug %s", slug);
+			rs.close();
+			return result;
+		} catch (SQLException e) {
+			return Error.of("Failed to load appointment with slug = %s".formatted(slug), e);
+		}
+	}
+
 	private static Result<Appointment> loadExtra(Result<BaseAppointment> res) {
 		return loadTags(res).map(MariaDB::loadLinks).map(MariaDB::loadAttachments);
 	}
@@ -221,7 +233,7 @@ public class MariaDB implements Database {
 		var end      = nullable(results.getTimestamp("end")).map(Timestamp::toLocalDateTime).orElse(null);
 		var location = results.getString("location");
 		var slug     = results.getString("slug");
-		if (slug == null) slug = Calc.hash(start + "@" + location).orElse(null);
+		if (slug == null) slug = slug(location, start);
 		var appointment = new BaseAppointment(id, title, description, start, end, location, slug);
 		try {
 			var tags = nullIfEmpty(results.getString("tags"));

de.srsoftware.cal.web/build.gradle.kts

@@ -2,6 +2,7 @@ description = "OpenCloudCal : Web"
 
 dependencies {
     implementation(project(":de.srsoftware.cal.api"))
+    implementation(project(":de.srsoftware.cal.base"))
     implementation(project(":de.srsoftware.cal.db"))
 
     implementation("de.srsoftware:tools.http:1.0.4")

de.srsoftware.cal.web/src/main/java/de/srsoftware/cal/ApiHandler.java

@@ -1,9 +1,11 @@
 /* © SRSoftware 2024 */
 package de.srsoftware.cal;
 
+import static de.srsoftware.tools.Optionals.nullIfEmpty;
 import static de.srsoftware.tools.Optionals.nullable;
 import static java.lang.System.*;
 import static java.lang.System.Logger.Level.WARNING;
+import static java.time.format.DateTimeFormatter.ISO_DATE_TIME;
 
 import com.sun.net.httpserver.HttpExchange;
 import de.srsoftware.cal.api.Appointment;
@@ -23,6 +25,12 @@ import org.json.JSONObject;
 
 public class ApiHandler extends PathHandler {
 	private static final Logger LOG	        = getLogger(ApiHandler.class.getSimpleName());
+	private static final String SLUG        = "slug";
+	private static final String DESCRIPTION = "description";
+	private static final String TITLE       = "title";
+	private static final String START       = "start";
+	private static final String END	        = "end";
+	private static final String LOCATION    = "location";
 	private final Database      db;
 
 	public ApiHandler(Database db) {
@@ -41,6 +49,54 @@ public class ApiHandler extends PathHandler {
 
 	}
 
+	@Override
+	public boolean doPost(String path, HttpExchange ex) throws IOException {
+		return switch (path) {
+			case "/event/edit" -> editEvent(ex);
+			default -> PathHandler.notFound(ex);
+		};
+	}
+
+	private boolean editEvent(HttpExchange ex) throws IOException {
+		var json = json(ex);
+		// spotless:off
+		var slug = json.has(SLUG) ? nullIfEmpty(json.getString(SLUG)) : null;
+		// spotless:on
+				if (slug == null) sendContent(ex, Error.of("No slug value in appointment"));
+				var existingAppointment = db.loadEvent(slug);
+				return switch (existingAppointment) {
+					case Payload<Appointment> payload  //
+					    -> update(ex, payload.get(), json);
+					    case Error<Appointment> err	 //
+					    -> err.toString().startsWith("Failed to find appointment with slug") ? createEvent(ex, json):
+						sendContent(ex, err);
+						default -> serverError(ex, existingAppointment);
+				};
+		}
+
+		private boolean createEvent(HttpExchange ex, JSONObject json) throws IOException {
+			var description = json.has(DESCRIPTION) ? nullIfEmpty(json.getString(DESCRIPTION)) : null;
+			var title	= json.has(TITLE) ? nullIfEmpty(json.getString(TITLE)) : null;
+			if (title == null) return sendContent(ex, Error.of("title missing"));
+			var start = json.has(START) ? nullIfEmpty(json.getString(START)) : null;
+			if (start == null) return sendContent(ex, Error.of("start missing"));
+			var startDate = nullable(start).map(dt -> LocalDateTime.parse(dt, ISO_DATE_TIME)).orElse(null);
+			var end       = json.has(END) ? nullIfEmpty(json.getString(END)) : null;
+			var endDate   = nullable(end).map(dt -> LocalDateTime.parse(dt, ISO_DATE_TIME)).orElse(null);
+			var location  = json.has(LOCATION) ? json.getString(LOCATION) : null;
+			if (location == null) return sendContent(ex, Error.of("location missing"));
+			var clientSlug = json.has(SLUG) ? json.getString(SLUG) : null;
+			var serverSlug = Database.slug(location, startDate);
+			if (!serverSlug.equals(clientSlug)) return sendContent(ex, Error.of("Slug mismatch!"));
+			var event = new BaseAppointment(0, title, description, startDate, endDate, location, serverSlug);
+			db.add(event);
+			return sendContent(ex, Error.of("createEvent not implemented"));
+		}
+
+		private boolean update(HttpExchange ex, Appointment event, JSONObject json) throws IOException {
+			return sendContent(ex, Error.of("update not implemented"));
+		}
+
 		private boolean listTags(HttpExchange ex, Map<String, String> params) throws IOException {
 			var infix = params.get("infix");
 			if (infix == null) return sendContent(ex, Error.of("No infix set in method call parameters"));

de.srsoftware.cal.web/src/main/resources/script/edit.js

@@ -34,10 +34,7 @@ function addImage(evt){
 async function handleTags(response){
     if (response.ok){
         var tags = await response.json();
-        if (tags.length == 0){
-            console.log("no proposals!");
-            return;
-        }
+        if (tags.length == 0) return;
         var select = element('proposals');
         var input = element('tags-input');
         if (!select) return;
@@ -78,7 +75,6 @@ function tagKeyPress(e){
         var btn = element('save');
         btn.removeAttribute("disabled");
         btn.onclick= function(){ saveEvent(); };
-        console.log(btn);
     } else {
         if (keyTimer != null) clearTimeout(keyTimer);
         setTimeout(() => fetchTags(input.value),500);
@@ -117,7 +113,36 @@ function getAttachments(){
    return urls;
 }
 
-function saveEvent(){
+function camelCase(text) {
+    if (text == null) {
+        return null;
+    } else {
+        var slug = '';
+        var upper = false;
+
+        for(var i = 0; i < text.length; i++) {
+            var c = text.charAt(i);
+            if (c == ' ') {
+                upper = true;
+            } else {
+                slug += upper ? c.toUpperCase() : c;
+                upper = false;
+            }
+        }
+
+        return slug;
+    }
+}
+
+async function slug(start,location){
+    const hash = await crypto.subtle.digest("SHA-256", (new TextEncoder()).encode(`${start}@${location}`));
+    return btoa(String.fromCharCode(...new Uint8Array(hash)));
+}
+
+async function saveEvent(){
+    var location = element('location').value;
+    var start = element('start').value;
+    var slugVal = await slug(start,location);
     var event = {
         title : element('title').value,
         description : element('description').value,
@@ -127,7 +152,14 @@ function saveEvent(){
         tags: getTags(),
         links: getLinks(),
         coords: element('coords').value,
-        attachments: getAttachments()
+        attachments: getAttachments(),
+        slug: slugVal
     };
-    console.log(event);
+    fetch('/api/event/edit',{
+        method: 'POST',
+        body: JSON.stringify(event),
+        headers: {
+            'Content-Type' : 'appication/json'
+        }
+    });
 }