got rid of slug idea, as its functionality can be implemented without an additional db field

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

de.srsoftware.cal.api/src/main/java/de/srsoftware/cal/api/Appointment.java

@@ -55,12 +55,6 @@ public interface Appointment {
 	 */
 	String location();
 
-	/**
-	 * create a unique identifier based on the event content
-	 * @return the slug
-	 */
-	String slug();
-
 	/**
 	 * The date and time, when the appointment starts
 	 * @return the start time as LocalDateTime

de.srsoftware.cal.base/src/main/java/de/srsoftware/cal/BaseAppointment.java

@@ -20,7 +20,6 @@ public class BaseAppointment implements Appointment {
 	private long		       id;
 	private final String	       title, description;
 	private final LocalDateTime	       end, start;
-	private final String	       slug;
 	private Coords		       coords = null;
 	private final Set<Attachment> attachments     = new HashSet<>();
 	private final Set<String> tags	              = new HashSet<>();
@@ -36,10 +35,9 @@ public class BaseAppointment implements Appointment {
 	 * @param end set the end date
 	 * @param location set the location
 	 */
-	public BaseAppointment(long id, String title, String description, LocalDateTime start, LocalDateTime end, String location, String slug) {
+	public BaseAppointment(long id, String title, String description, LocalDateTime start, LocalDateTime end, String location) {
 		this.description = description;
 		this.end	 = end;
-		this.slug	 = slug;
 		this.id	 = id;
 		this.location	 = location;
 		this.start	 = start;
@@ -103,7 +101,7 @@ public class BaseAppointment implements Appointment {
 
 	@Override
 	public Appointment clone(long newId) {
-		return new BaseAppointment(newId, title, description, start, end, location, slug)  //
+		return new BaseAppointment(newId, title, description, start, end, location)  //
 		    .coords(coords)
 		    .addLinks(links)
 		    .add(attachments)
@@ -139,7 +137,6 @@ public class BaseAppointment implements Appointment {
 		json.put("end", end().map(end -> end.format(DATE_TIME)).orElse(null));
 		json.put("id", id());
 		json.put("location", location());
-		json.put("slug", slug());
 		json.put("start", start().format(DATE_TIME));
 		json.put("tags", tags());
 		json.put("title", title());
@@ -153,13 +150,6 @@ public class BaseAppointment implements Appointment {
 		return location;
 	}
 
-
-	@Override
-	public String slug() {
-		return slug;
-	}
-
-
 	@Override
 	public LocalDateTime start() {
 		return start;

de.srsoftware.cal.base/src/main/java/de/srsoftware/cal/BaseImporter.java

@@ -2,7 +2,6 @@
 package de.srsoftware.cal;
 
 import static de.srsoftware.tools.Result.transform;
-import static java.nio.charset.StandardCharsets.UTF_8;
 
 import de.srsoftware.cal.api.*;
 import de.srsoftware.tools.*;
@@ -101,9 +100,7 @@ public abstract class BaseImporter implements Importer {
 		if (locationResult.optional().isEmpty()) return transform(locationResult);
 		var location = locationResult.optional().get();
 
-		var hash = hash("%s@%s".formatted(start, location));
-
-		var event = new BaseAppointment(id, title, description, start, end, location, hash)  //
+		var event = new BaseAppointment(id, title, description, start, end, location)  //
 			.add(extractAttachments(eventTag))
 			.addLinks(extractLinks(eventTag))
 			.tags(extractTags(eventTag));
@@ -204,15 +201,6 @@ public abstract class BaseImporter implements Importer {
 				.flatMap(result -> result.optional().stream());
 	}
 
-	/**
-	 * create a hash from a text
-	 * @param plain the plain text
-	 * @return the hash of the plain text
-	 */
-	protected String hash(String plain){
-		return Strings.hex(digest.digest(plain.getBytes(UTF_8)));
-	}
-
 	protected static <T> Result<T> invalidParameter(Result<?> result) {
 		return Error.format("Invalid parameter: %s", result.getClass().getSimpleName());
 	}

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

@@ -2,9 +2,7 @@
 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;
@@ -50,11 +48,7 @@ public interface Database {
 
 	Result<Appointment> loadEvent(long id);
 
-	Result<Appointment> loadEvent(String slug);
+	Result<Appointment> loadEvent(String location, LocalDateTime start);
 
 	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/Fields.java

@@ -10,7 +10,6 @@ public class Fields {
 	public static final String KEYWORD     = "keyword";
 	public static final String LOCATION    = "location";
 	public static final String MIME	       = "mime";
-	public static final String SLUG	       = "slug";
 	public static final String START       = "start";
 	public static final String TID	       = "tid";
 	public static final String TITLE       = "title";

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

@@ -1,7 +1,6 @@
 /* © SRSoftware 2024 */
 package de.srsoftware.cal.db;
 
-import static de.srsoftware.cal.db.Database.slug;
 import static de.srsoftware.cal.db.Fields.*;
 import static de.srsoftware.cal.db.Fields.ALL;
 import static de.srsoftware.tools.Optionals.*;
@@ -27,14 +26,12 @@ import java.util.*;
 
 public class MariaDB implements Database {
 	private static final System.Logger LOG	           = System.getLogger(MariaDB.class.getSimpleName());
-	private static final String	   ADD_SLUG	           = "ALTER TABLE appointments ADD slug VARCHAR(255) UNIQUE";
 	private static final String	   APPOINTMENTS	           = "appointments";
 	private static final String	   APPOINTMENT_TAGS        = "appointment_tags";
 	private static final String	   APPOINTMENT_URLS        = "appointment_urls";
 	private static final String	   URLS	           = "urls";
 	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 {
@@ -53,47 +50,9 @@ public class MariaDB implements Database {
 		switch (version) {
 			case 0:
 				createTables();
-			case 1:
-				update1();
 		}
 	}
 
-	private void update1() throws SQLException {
-		LOG.log(INFO, "Updating db scheme from version 1 to 2…");
-		var list = new ArrayList<Appointment>();
-
-		connection.setAutoCommit(false);
-
-		LOG.log(DEBUG, "Adding slug column…");
-		connection.prepareStatement(ADD_SLUG).execute();
-		var slugMap = new HashMap<Long, String>();
-		LOG.log(DEBUG, "Reading existing appointments…");
-		var rs = select(ALL).from("appointments").exec(connection);
-		while (rs.next()) {
-			var id       = rs.getLong(AID);
-			var location = nullable(nullIfEmpty(rs.getString("location")));
-			if (location.isEmpty()) continue;
-			var title = rs.getString("title");
-			LOG.log(TRACE, () -> "%s: %s".formatted(id, title));
-			var descr = rs.getString("description");
-			if (allEmpty(title, descr)) continue;
-			var start = nullable(rs.getTimestamp("start")).map(Timestamp::toLocalDateTime);
-			if (start.isEmpty()) continue;
-			var slug = slug(location.get(), start.get());
-			slugMap.put(id, slug);
-		}
-		rs.close();
-		LOG.log(DEBUG, "Creating slugs…");
-		var query = updateIgnore("appointments").set("slug").where(AID, equal(MARK)).prepare(connection);
-		for (var entry : slugMap.entrySet()) {
-			query.apply(entry.getValue(), entry.getKey());
-		}
-
-		LOG.log(DEBUG, "Writing new db version marker…");
-		update("config").set("value").where("keyname", equal("dbversion")).prepare(connection).apply(2);
-		connection.setAutoCommit(true);
-	}
-
 	private void createTables() {
 		throw new RuntimeException("%s.createTables() not implemented!");
 	}
@@ -102,8 +61,8 @@ public class MariaDB implements Database {
 	@Override
 	public Result<Appointment> add(Appointment appointment) {
 		try {
-			ResultSet keys = insertInto(APPOINTMENTS, TITLE, DESCRIPTION, START, END, LOCATION, COORDS, SLUG)  //
-				     .values(appointment.title(), appointment.description(), appointment.start(), appointment.end().orElse(null), appointment.location(), appointment.coords().orElse(null), appointment.slug())
+			ResultSet keys = insertInto(APPOINTMENTS, TITLE, DESCRIPTION, START, END, LOCATION, COORDS)  //
+				     .values(appointment.title(), appointment.description(), appointment.start(), appointment.end().orElse(null), appointment.location(), appointment.coords().orElse(null))
 				     .execute(connection)
 				     .getGeneratedKeys();
 			Appointment saved = null;
@@ -215,14 +174,14 @@ public class MariaDB implements Database {
 	}
 
 	@Override
-	public Result<Appointment> loadEvent(String slug) {
+	public Result<Appointment> loadEvent(String location, LocalDateTime start) {
 		try {
-			var	    rs     = 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);
+			var	    rs     = select(ALL).from(APPOINTMENTS).where(LOCATION, equal(location)).where(START, equal(Timestamp.valueOf(start))).exec(connection);
+			Result<Appointment> result = rs.next() ? createAppointmentOf(rs).map(MariaDB::loadExtra) : Error.format("Failed to find appointment starting %s @ %s".formatted(start, location));
 			rs.close();
 			return result;
 		} catch (SQLException e) {
-			return Error.of("Failed to load appointment with slug = %s".formatted(slug), e);
+			return Error.of("Failed to load appointment starting %s @ %s".formatted(start, location), e);
 		}
 	}
 
@@ -295,12 +254,10 @@ public class MariaDB implements Database {
 		var title	= results.getString("title");
 		var description = results.getString("description");
 		if (allEmpty(title, description)) return Error.format("Title and Description of appointment %s are empty", id);
-		var start    = results.getTimestamp("start").toLocalDateTime();
-		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 = slug(location, start);
-		var appointment = new BaseAppointment(id, title, description, start, end, location, slug);
+		var start	= results.getTimestamp("start").toLocalDateTime();
+		var end	= nullable(results.getTimestamp("end")).map(Timestamp::toLocalDateTime).orElse(null);
+		var location	= results.getString("location");
+		var appointment = new BaseAppointment(id, title, description, start, end, location);
 		try {
 			var tags = nullIfEmpty(results.getString("tags"));
 			if (tags != null) appointment.tags(tags.split(","));

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

@@ -2,8 +2,7 @@
 package de.srsoftware.cal;
 
 import static de.srsoftware.cal.db.Fields.*;
-import static de.srsoftware.tools.Optionals.nullIfEmpty;
-import static de.srsoftware.tools.Optionals.nullable;
+import static de.srsoftware.tools.Optionals.*;
 import static java.lang.System.*;
 import static java.lang.System.Logger.Level.WARNING;
 import static java.time.format.DateTimeFormatter.ISO_DATE_TIME;
@@ -56,22 +55,18 @@ public class ApiHandler extends PathHandler {
 		};
 	}
 
+	// spotless:off
 	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);
-				};
+		var location = json.has(LOCATION) ? json.getString(LOCATION) : null;
+		var start = json.has(START) ? LocalDateTime.parse(json.getString(START)) : null;
+		if (allSet(location, start)) {
+			var existingAppointment = db.loadEvent(location, start).optional();
+			if (existingAppointment.isPresent()) return update(ex, existingAppointment.get(), json);
 		}
+		return createEvent(ex, json);
+	}
+	// spotless:on
 
 		private boolean createEvent(HttpExchange ex, JSONObject json) throws IOException {
 			var description = json.has(DESCRIPTION) ? nullIfEmpty(json.getString(DESCRIPTION)) : null;
@@ -84,10 +79,7 @@ public class ApiHandler extends PathHandler {
 			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);
+			var event = new BaseAppointment(0, title, description, startDate, endDate, location);
 			if (json.has(ATTACHMENTS)) {
 				json.getJSONArray(ATTACHMENTS).forEach(att -> {
 					Payload  //

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

@@ -50,6 +50,8 @@ async function handleTags(response){
                 input.focus();
             };
             select.appendChild(option);
+            select.onkeyup = selectKeyPress;
+
         });
         select.style.display = 'block';
         select.style.height = (22*tags.length)+'px';
@@ -61,20 +63,41 @@ function onMapClick(e) {
     if (marker) marker.setLatLng(e.latlng);
 }
 
+function addTag(tag){
+    var list = element('taglist');
+    if (selectedTags.size<1) list.innerHTML = '';
+    list.innerHTML += `<span><button onclick="this.parentNode.parentNode.removeChild(this.parentNode);" title="click to remove">${tag}</button> </span>`;
+    selectedTags.add(tag);
+    var btn = element('save');
+    btn.removeAttribute("disabled");
+    btn.onclick= function(){ saveEvent(); };
+    var select = element('proposals');
+    select.innerHTML = '';
+    select.style.display = 'none';
+    var input = element('tags-input')
+    input.value = '';
+    input.focus();
+
+}
+
+function selectKeyPress(e){
+    if (e.keyCode == 13){
+        addTag(e.target.value);
+    }
+}
 
 function tagKeyPress(e){
     var input = e.target;
     if (e.keyCode == 13){
         var tag = input.value;
         if (!tag) return;
-        var list = element('taglist');
-        if (selectedTags.size<1) list.innerHTML = '';
-        list.innerHTML += `<span><button onclick="this.parentNode.parentNode.removeChild(this.parentNode);" title="click to remove">${input.value}</button> </span>`;
-        selectedTags.add(tag);
-        input.value = '';
-        var btn = element('save');
-        btn.removeAttribute("disabled");
-        btn.onclick= function(){ saveEvent(); };
+        addTag(tag);
+
+    } else if (e.keyCode == 40){
+        var select = element('proposals');
+        var val = select.firstChild.value;
+        select.value = val;
+        select.focus();
     } else {
         if (keyTimer != null) clearTimeout(keyTimer);
         setTimeout(() => fetchTags(input.value),500);
@@ -113,39 +136,21 @@ function getAttachments(){
    return urls;
 }
 
-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)));
-}
 
 function showError(message){
     var span = document.createElement('div');
     span.setAttribute('class','error');
     span.innerHTML = "<span>Error: "+message+"<span>";
+    span.style.opacity = '1';
+    span.style.transition = 'opacity 1000ms linear';
     element('taglist').appendChild(span);
+    setTimeout(() => {
+        span.style.opacity = '0';
+        setTimeout(() => span.parentNode.removeChild(span),1000);
+    },4000);
 }
 
+
 async function handleSave(response){
     if (response.ok){
         var json = await response.json();
@@ -163,7 +168,6 @@ 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,
@@ -173,8 +177,7 @@ async function saveEvent(){
         tags: getTags(),
         links: getLinks(),
         coords: element('coords').value,
-        attachments: getAttachments(),
-        slug: slugVal
+        attachments: getAttachments()
     };
     fetch('/api/event/edit',{
         method: 'POST',