Unofficial themes are remembered now

Logic/Actors/AvailableBaseLayersImplementation.ts

@@ -103,7 +103,8 @@ export default class AvailableBaseLayersImplementation implements AvailableBaseL
                     id: id,
                     name: name,
                     layer: () => L.tileLayer.provider(id, {
-                        maxNativeZoom: layer.options?.maxZoom
+                        maxNativeZoom: layer.options?.maxZoom,
+                       maxZoom: Math.max(layer.options?.maxZoom ?? 19, 21)
                     }),
                     min_zoom: 1,
                     max_zoom: layer.options.maxZoom,

Logic/Osm/OsmPreferences.ts

@@ -5,7 +5,7 @@ import {Utils} from "../../Utils";
 export class OsmPreferences {
 
     public preferences = new UIEventSource<any>({}, "all-osm-preferences");
-    public preferenceSources: any = {}
+    private readonly preferenceSources = new Map<string, UIEventSource<string>>()
     private auth: any;
     private userDetails: UIEventSource<UserDetails>;
     private longPreferences = {};
@@ -29,6 +29,7 @@ export class OsmPreferences {
             return this.longPreferences[prefix + key];
         }
 
+
         const source = new UIEventSource<string>(undefined, "long-osm-preference:" + prefix + key);
         this.longPreferences[prefix + key] = source;
 
@@ -36,6 +37,10 @@ export class OsmPreferences {
         // Gives the number of combined preferences
         const length = this.GetPreference(allStartWith + "-length", "");
 
+       if( (allStartWith + "-length").length > 255){
+           throw "This preference key is too long, it has "+key.length+" characters, but at most "+(255 - "-length".length - "-combined".length - prefix.length)+" characters are allowed"
+       }
+
         const self = this;
         source.addCallback(str => {
             if (str === undefined || str === "") {
@@ -101,24 +106,21 @@ export class OsmPreferences {
         if (key.length >= 255) {
             throw "Preferences: key length to big";
         }
-        if (this.preferenceSources[key] !== undefined) {
-            return this.preferenceSources[key];
+        const cached = this.preferenceSources.get(key)
+        if (cached !== undefined) {
+            return cached;
         }
         if (this.userDetails.data.loggedIn && this.preferences.data[key] === undefined) {
             this.UpdatePreferences();
         }
+                
         const pref = new UIEventSource<string>(this.preferences.data[key], "osm-preference:" + key);
         pref.addCallback((v) => {
-            this.SetPreference(key, v);
+            this.UploadPreference(key, v);
         });
 
-        this.preferences.addCallback((prefs) => {
-            if (prefs[key] !== undefined) {
-                pref.setData(prefs[key]);
-            }
-        });
-
-        this.preferenceSources[key] = pref;
+        
+        this.preferenceSources.set(key, pref)
         return pref;
     }
 
@@ -167,11 +169,25 @@ export class OsmPreferences {
                 const v = pref.getAttribute("v");
                 self.preferences.data[k] = v;
             }
+            
+            // We merge all the preferences: new keys are uploaded
+            // For differing values, the server overrides local changes
+            self.preferenceSources.forEach((preference, key) => {
+                const osmValue = self.preferences[key]
+                if(osmValue === undefined){
+                    // OSM doesn't know this value yet
+                    self.UploadPreference(key, preference.data)
+                } else {
+                    // OSM does have a value - set it
+                    preference.setData(osmValue)
+                }
+            })
+            
             self.preferences.ping();
         });
     }
 
-    private SetPreference(k: string, v: string) {
+    private UploadPreference(k: string, v: string) {
         if (!this.userDetails.data.loggedIn) {
             console.debug(`Not saving preference ${k}: user not logged in`);
             return;

Logic/State/UserRelatedState.ts

@@ -29,17 +29,6 @@ export default class UserRelatedState extends ElementsState {
      */
     public favouriteLayers: UIEventSource<string[]>;
 
-    /**
-     * WHich other themes the user previously visited
-     */
-    public installedThemes: UIEventSource<{
-        id: string, // The id doubles as the URL
-        icon: string,
-        title: any,
-        shortDescription: any
-    }[]>;
-
-
     constructor(layoutToUse: LayoutConfig, options?: { attemptLogin: true | boolean }) {
         super(layoutToUse);
 
@@ -73,50 +62,15 @@ export default class UserRelatedState extends ElementsState {
             })
         }
 
-        this.installedThemes = this.osmConnection.GetLongPreference("installed-themes").map(
-            str => {
-                if (str === undefined || str === "") {
-                    return []
-                }
-                try {
-                    return JSON.parse(str);
-                } catch (e) {
-                    console.warn("Could not parse preference with installed themes due to ", e, "\nThe offending string is", str)
-                    return []
-                }
-            }, [], (installed) => JSON.stringify(installed)
-        )
-
-
-        const self = this;
-
-        if (this.layoutToUse?.id?.startsWith("http")) {
-            this.installedThemes.addCallbackAndRun(currentThemes => {
-                if (currentThemes === undefined) {
-                    // We wait till we are logged in
-                    return
-                }
-
-                if (self.osmConnection.isLoggedIn.data == false) {
-                    return;
-                }
-
-                if (currentThemes.some(installed => installed.id === this.layoutToUse.id)) {
-                    // Already added to the 'installed theme' list
-                    return;
-                }
-
-                console.log("Current installed themes are", this.installedThemes.data)
-                currentThemes.push({
-                    id: self.layoutToUse.id,
-                    icon: self.layoutToUse.icon,
-                    title: self.layoutToUse.title.translations,
-                    shortDescription: self.layoutToUse.shortDescription.translations
-                })
-                self.installedThemes.ping()
-                console.log("Registered " + self.layoutToUse.id + " as installed themes")
-
-            })
+        if (this.layoutToUse !== undefined && !this.layoutToUse.official) {
+            console.log("Marking unofficial theme as visited")
+            this.osmConnection.GetLongPreference("unofficial-theme-" + this.layoutToUse.id)
+                .setData(JSON.stringify({
+                    id: this.layoutToUse.id,
+                    icon: this.layoutToUse.icon,
+                    title: this.layoutToUse.title.translations,
+                    shortDescription: this.layoutToUse.shortDescription.translations
+                }))
         }
 
 

UI/BigComponents/MoreScreen.ts

@@ -120,14 +120,42 @@ export default class MoreScreen extends Combine {
     }
 
     private static createUnofficialThemeList(buttonClass: string, state: UserRelatedState, themeListClasses): BaseUIElement {
-        return new VariableUiElement(state.installedThemes.map(customThemes => {
-            if (customThemes.length <= 0) {
+        const prefix = "mapcomplete-unofficial-theme-";
+        return new VariableUiElement(state.osmConnection.preferencesHandler.preferences.map(allPreferences => {
+            console.log("All preferences are ", allPreferences)
+            const allThemes: BaseUIElement[] = []
+            for (const key in allPreferences) {
+                if (key.startsWith(prefix) && key.endsWith("-combined-length")) {
+                    const id = key.substring(0, key.length - "-length".length)
+                    const length = Number(allPreferences[key])
+
+                    let str = "";
+                    for (let i = 0; i < length; i++) {
+                        str += allPreferences[id + "-" + i]
+                    }
+                    console.log("Theme " + id + " has settings ", str)
+                    try {
+                        const value: {
+                            id: string
+                            icon: string,
+                            title: any,
+                            shortDescription: any
+                        } = JSON.parse(str)
+
+                        const link = MoreScreen.createLinkButton(state, value, true).SetClass(buttonClass)
+                        allThemes.push(link)
+                    } catch (e) {
+                        console.error("Could not parse unofficial theme information for " + id, e)
+                    }
+                }
+            }
+
+            if (allThemes.length <= 0) {
                 return undefined;
             }
-            const customThemeButtons = customThemes.map(theme => MoreScreen.createLinkButton(state, theme, true)?.SetClass(buttonClass))
             return new Combine([
                 Translations.t.general.customThemeIntro.Clone(),
-                new Combine(customThemeButtons).SetClass(themeListClasses)
+                new Combine(allThemes).SetClass(themeListClasses)
             ]);
         }));
     }