From dcb94e7c58daf5630bf833fa5fb2089730097708 Mon Sep 17 00:00:00 2001
From: Samuel Andert <samuel@ora.earth>
Date: Thu, 3 Aug 2023 14:03:02 +0200
Subject: [PATCH] Refactoring composite interface part1

---
 src/documentations/external/skeleton.md       | 180 -------------
 .../components/refactor/ComposerAlice.svelte  |  27 ++
 .../components/refactor/ComposerBob.svelte    |  18 ++
 src/lib/core/refactor/Composer.svelte         | 252 ++++++++++++++++++
 src/lib/core/refactor/FallBack.svelte         |   4 +
 src/lib/core/refactor/composerStores.ts       |  16 ++
 src/lib/core/refactor/coreServices.ts         |  23 ++
 src/routes/composer/+page.svelte              |  59 ++++
 8 files changed, 399 insertions(+), 180 deletions(-)
 delete mode 100644 src/documentations/external/skeleton.md
 create mode 100644 src/lib/components/refactor/ComposerAlice.svelte
 create mode 100644 src/lib/components/refactor/ComposerBob.svelte
 create mode 100644 src/lib/core/refactor/Composer.svelte
 create mode 100644 src/lib/core/refactor/FallBack.svelte
 create mode 100644 src/lib/core/refactor/composerStores.ts
 create mode 100644 src/lib/core/refactor/coreServices.ts
 create mode 100644 src/routes/composer/+page.svelte

diff --git a/src/documentations/external/skeleton.md b/src/documentations/external/skeleton.md
deleted file mode 100644
index 97ced30..0000000
--- a/src/documentations/external/skeleton.md
+++ /dev/null
@@ -1,180 +0,0 @@
-TYPESCRIPT
-Copy
-import { RangeSlider } from '@skeletonlabs/skeleton';
-Source
-Page Source
-WAI-ARIA
-Usage
-Props
-Slots
-Events
-Keyboard
-Demo
-
-
-Combines a native range input with datalist ticks to create a powerful range slider element.
-
-Labeled
-
-TYPESCRIPT
-Copy
-let value = 15;
-let max = 25;
-HTML
-Copy
-<RangeSlider name="range-slider" bind:value={value} max={25} step={1} ticked>
-	<div class="flex items-center justify-between">
-		<div class="font-bold">Label</div>
-		<div class="text-xs">{value} / {max}</div>
-	</div>
-</RangeSlider>
-
-This component implements restProps. This passes all extra attributes to the component's input elements.
-
-Name	Type	Value	Description
-name	string	-	Required. Set a unique name for the input.
-id	string	-	Provide a unique input id. Auto-generated by default
-value	number	0	Set the input value.
-min	number	0	Set the input minimum range.
-max	number	100	Set the input maximum range.
-step	number	1	Set the input step offset.
-ticked	boolean	false	Enables tick marks. See browser support below.
-accent	string	'accent-surface-900 dark:accent-surface-50'	Provide classes to set the input accent color.
-label	string	-	A semantic ARIA label.
-
-Usage
-Props
-Slots
-Events
-Keyboard
-Name	Default	Fallback	Description
-default	✓	-	-
-trail	-	-	A label slot directly below the range slider.
-
-
-Source
-Page Source
-WAI-ARIA
-Usage
-Props
-Slots
-Events
-Keyboard
-Name	Type	Element	Response	Description
-on:click	forwarded	<input>	-	-
-on:change	forwarded	<input>	-	-
-on:blur	forwarded	<input>	-	-
-
-
-
-Source
-Page Source
-WAI-ARIA
-Usage
-Props
-Slots
-Events
-Keyboard
-Keys	Description
-Right Arrow or Up Arrow	Increase the value of the slider by one step.
-Left Arrow or Down Arrow	Decrease the value of the slider by one step.
-Home	Set the slider to the first allowed value in its range.
-End	Set the slider to the last allowed value in its range.
-Page Up	Increase the slider value by a large amount.
-Page Down	Decrease the slider value by a large amount.
-
-
-Slide Toggles
-A sliding toggle element that can capture input from a user.
-
-TYPESCRIPT
-Copy
-import { SlideToggle } from '@skeletonlabs/skeleton';
-Source
-Page Source
-WAI-ARIA
-Usage
-Props
-Slots
-Events
-Demo
-
-TYPESCRIPT
-Copy
-let value: boolean = false;
-HTML
-Copy
-<SlideToggle name="slide" bind:checked={value} />
-This component provides an alternative UI for a checkbox input element.
-
-Labeled
-
-HTML
-Copy
-<SlideToggle name="slider-label" checked>(label)</SlideToggle>
-Customized
-Slide toggles styles and colors can be easily customized with the active and size properties.
-
-
-HTML
-Copy
-<SlideToggle name="slider-large" checked active="bg-primary-500" size="lg" />
-Checkbox Attributes
-This component supports Svelte's $$restProps, which allows for required, disabled, and any other valid checkbox input attributes.
-
-HTML
-Copy
-<SlideToggle ... required disabled />
-
-Usage
-Props
-Slots
-Events
-This component implements restProps. This passes all extra attributes to the component's input elements.
-
-Name	Type	Value	Description
-name	string	-	Required. Set a unique name for the input.
-checked	boolean	false	The checked state of the input element.
-size	'sm' | 'md' | 'lg'	'md'	Sets the size of the component.
-background	string	'bg-surface-400 dark:bg-surface-700'	Provide classes to set the inactive state background color.
-active	string	'bg-surface-900 dark:bg-surface-300'	Provide classes to set the active state background color.
-border	string	-	Provide classes to set the border styles.
-rounded	string	'rounded-full'	Provide classes to set border radius styles.
-label	string	-	Provide a semantic label.
-
-
-TYPESCRIPT
-Copy
-import { SlideToggle } from '@skeletonlabs/skeleton';
-Source
-Page Source
-WAI-ARIA
-Usage
-Props
-Slots
-Events
-Name	Default	Fallback	Description
-default	✓	-	-
-
-Slide Toggles
-A sliding toggle element that can capture input from a user.
-
-TYPESCRIPT
-Copy
-import { SlideToggle } from '@skeletonlabs/skeleton';
-Source
-Page Source
-WAI-ARIA
-Usage
-Props
-Slots
-Events
-Name	Type	Element	Response	Description
-on:keyup	dispatched	-	{ event }	Fires when the component is focused and key is pressed.
-on:click	forwarded	<input>	-	-
-on:keydown	forwarded	<input>	-	-
-on:keypress	forwarded	<input>	-	-
-on:mouseover	forwarded	<input>	-	-
-on:change	forwarded	<input>	-	-
-on:focus	forwarded	<input>	-	-
-on:blur	forwarded	<input>	-	-
diff --git a/src/lib/components/refactor/ComposerAlice.svelte b/src/lib/components/refactor/ComposerAlice.svelte
new file mode 100644
index 0000000..63848e7
--- /dev/null
+++ b/src/lib/components/refactor/ComposerAlice.svelte
@@ -0,0 +1,27 @@
+<script>
+	export let services;
+	export let store;
+
+	export let machineService;
+
+	let childStore;
+
+	$: if (services.core) {
+		childStore = services.core.subscribeComposer('@ComposerBob');
+	}
+
+	$: {
+		if ($childStore && $childStore.machine.state) {
+			console.log('learn color machine: ' + JSON.stringify(machineService));
+			machineService.send($childStore.machine.state);
+		}
+	}
+</script>
+
+<div class="p-2 border-2 border-blue-500">
+	I am the parent, this is my state: {$store.machine.state}
+	<div
+		class="p-2 border-2"
+		style="background-color: {$store.machine.state}; border-radius: 50%; width: 50px; height: 50px;"
+	/>
+</div>
diff --git a/src/lib/components/refactor/ComposerBob.svelte b/src/lib/components/refactor/ComposerBob.svelte
new file mode 100644
index 0000000..5bdcb25
--- /dev/null
+++ b/src/lib/components/refactor/ComposerBob.svelte
@@ -0,0 +1,18 @@
+<script>
+	export let store;
+	export let machineService;
+
+	const handleButton = () => {
+		console.log('learn ready machine: ' + JSON.stringify(machineService));
+		console.log('Sending TOGGLE event to the machine');
+		machineService.send('TOGGLE');
+	};
+</script>
+
+<div class="border-2 border-yellow-500">
+	i am the child and this is my state: {$store.machine.state}
+	<button
+		class="px-4 py-2 font-bold text-white bg-blue-500 rounded hover:bg-blue-700"
+		on:click={handleButton}>Switch</button
+	>
+</div>
diff --git a/src/lib/core/refactor/Composer.svelte b/src/lib/core/refactor/Composer.svelte
new file mode 100644
index 0000000..27f2c92
--- /dev/null
+++ b/src/lib/core/refactor/Composer.svelte
@@ -0,0 +1,252 @@
+<script lang="ts">
+	import { onDestroy } from 'svelte';
+	import Composer from './Composer.svelte';
+	import FallBack from './FallBack.svelte';
+	import components from '$lib/core/componentLoader';
+	import services from '$lib/core/servicesLoader';
+	import { dataStore } from '$lib/core/dataLoader';
+	import { createComposerStore, getComposerStore } from './composerStores';
+	import { coreServices } from './coreServices';
+	import { Machine, interpret } from 'xstate';
+
+	interface IComposerLayout {
+		areas: string;
+		columns?: string;
+		rows?: string;
+		gap?: string;
+		tailwindClasses?: string;
+	}
+
+	interface IComposer {
+		layout?: IComposerLayout;
+		id: string;
+		slot?: string;
+		component?: string;
+		services?: string[];
+		map?: Record<string, string>;
+		store?: Record<string, any>;
+		children?: IComposer[];
+		servicesLoaded?: boolean;
+		machine?: any;
+		machineService?: any;
+	}
+
+	export let composer: IComposer;
+	let loadedServices: Record<string, any> = {
+		core: coreServices
+	};
+	let layoutStyle = '';
+
+	let machineService;
+
+	$: {
+		layoutStyle = computeLayoutStyle(composer?.layout);
+
+		initializeAndLoadServices(composer);
+		initializeComposerState(composer);
+		mapAndSubscribe(composer);
+
+		if (composer?.children) {
+			composer.children.forEach((child) => {
+				initializeComposerState(child);
+				initializeAndLoadServices(child);
+				mapAndSubscribe(child);
+			});
+		}
+		if (composer?.machine) {
+			const machine = Machine({ ...composer.machine, id: composer.id });
+			machineService = interpret(machine).onTransition((state) => {
+				getComposerStore(composer.id).update((storeValue) => ({
+					...storeValue,
+					machine: { state: state.value }
+				}));
+			});
+			machineService.start();
+			composer.machineService = machineService;
+		}
+
+		if (composer?.children) {
+			composer.children.forEach((child) => {
+				if (child.machine) {
+					const childMachine = Machine({ ...child.machine, id: child.id });
+					machineService = interpret(childMachine).onTransition((state) => {
+						getComposerStore(child.id).update((storeValue) => ({
+							...storeValue,
+							machine: { state: state.value }
+						}));
+					});
+					machineService.start();
+					child.machineService = machineService;
+				}
+			});
+		}
+	}
+
+	function computeLayoutStyle(layout?: IComposerLayout): string {
+		if (!layout) return '';
+		return `
+            grid-template-areas: ${layout.areas};
+            ${layout.gap ? `gap: ${layout.gap};` : ''}
+            ${layout.columns ? `grid-template-columns: ${layout.columns};` : ''}
+            ${layout.rows ? `grid-template-rows: ${layout.rows};` : ''}
+        `;
+	}
+
+	function initializeAndLoadServices(component: IComposer) {
+		if (!component) return;
+
+		if (component.services) {
+			let servicePromises = component.services.map((serviceName) =>
+				loadedServices[serviceName]
+					? Promise.resolve(loadedServices[serviceName])
+					: loadService(serviceName)
+			);
+
+			Promise.all(servicePromises).then((loaded) => {
+				loaded.forEach((service, index) => {
+					loadedServices[component.services[index]] = service;
+				});
+				component.servicesLoaded = true;
+			});
+		} else {
+			component.servicesLoaded = true;
+		}
+	}
+	function initializeComposerState(child: IComposer) {
+		if (!child) return; // Add this line
+
+		if (child.id) {
+			child.store = createComposerStore(child.id, child.store || {});
+		}
+
+		if (child.children) {
+			child.children.forEach(initializeComposerState);
+		}
+	}
+
+	let unsubscribers = [];
+
+	function mapAndSubscribe(component: IComposer) {
+		if (!component) return;
+		if (component.map) {
+			const localStore = getComposerStore(component.id);
+
+			for (const [localKey, mapping] of Object.entries(component.map)) {
+				const isDataMapping = mapping.startsWith('@data:');
+				const isStoreMapping = mapping.startsWith('@');
+
+				if (isDataMapping) {
+					const externalKey = mapping.replace('@data:', '').trim();
+
+					const unsubscribe = dataStore.subscribe((store) => {
+						if (externalKey in store) {
+							if (store[externalKey] && typeof store[externalKey].subscribe === 'function') {
+								let innerUnsub = store[externalKey].subscribe((value) => {
+									localStore.update((storeValue) => ({ ...storeValue, [localKey]: value }));
+								});
+								unsubscribers.push(innerUnsub);
+							} else {
+								localStore.update((storeValue) => ({
+									...storeValue,
+									[localKey]: store[externalKey]
+								}));
+							}
+						}
+					});
+
+					unsubscribers.push(unsubscribe);
+				} else if (isStoreMapping) {
+					const [externalID, externalKey] = mapping
+						.replace('@', '')
+						.split(':')
+						.map((item) => item.trim());
+
+					const externalStore = getComposerStore(externalID);
+					if (externalStore) {
+						const unsubscribe = externalStore.subscribe((externalState) => {
+							if (externalState && externalKey in externalState) {
+								localStore.update((storeValue) => ({
+									...storeValue,
+									[localKey]: externalState[externalKey]
+								}));
+							}
+						});
+
+						unsubscribers.push(unsubscribe);
+					}
+				}
+			}
+		}
+
+		if (component.children) {
+			component.children.forEach(mapAndSubscribe);
+		}
+	}
+
+	onDestroy(() => {
+		unsubscribers.forEach((unsub) => unsub());
+	});
+
+	async function getComponent(componentName: string) {
+		if (components[componentName]) {
+			const module = await components[componentName]();
+			return module.default;
+		}
+		return FallBack;
+	}
+
+	async function loadService(serviceName: string) {
+		if (services[serviceName]) {
+			const module = await services[serviceName]();
+			return module.default || module;
+		}
+		return null;
+	}
+
+	async function loadComponentAndService(component: IComposer) {
+		const componentName = component.component || 'FallBack';
+		return await getComponent(componentName);
+	}
+</script>
+
+<div
+	class={`grid w-full h-full overflow-hidden ${composer?.layout?.tailwindClasses || ''}`}
+	style={layoutStyle}
+>
+	{#if composer?.servicesLoaded}
+		{#await loadComponentAndService(composer) then Component}
+			<svelte:component
+				this={Component}
+				id={composer.id}
+				store={getComposerStore(composer.id)}
+				machine={composer.machine}
+				services={loadedServices}
+				machineService={child.machineService}
+			/>
+		{/await}
+	{/if}
+	{#if composer?.children}
+		{#each composer.children as child (child.id)}
+			<div
+				class="grid w-full h-full overflow-hidden ${composer?.layout?.tailwindClasses || ''}"
+				style={`grid-area: ${child.slot}`}
+			>
+				{#if child.servicesLoaded}
+					{#await loadComponentAndService(child) then ChildComponent}
+						<svelte:component
+							this={ChildComponent}
+							id={child.id}
+							store={getComposerStore(child.id)}
+							machine={child.machine}
+							services={loadedServices}
+							machineService={child.machineService}
+						/>
+						{#if child.children && child.children.length}
+							<Composer composer={child} />
+						{/if}
+					{/await}
+				{/if}
+			</div>
+		{/each}
+	{/if}
+</div>
diff --git a/src/lib/core/refactor/FallBack.svelte b/src/lib/core/refactor/FallBack.svelte
new file mode 100644
index 0000000..c4fb85e
--- /dev/null
+++ b/src/lib/core/refactor/FallBack.svelte
@@ -0,0 +1,4 @@
+<script>
+	export let id;
+	console.log(`FallBack component rendered with id ${id}`);
+</script>
\ No newline at end of file
diff --git a/src/lib/core/refactor/composerStores.ts b/src/lib/core/refactor/composerStores.ts
new file mode 100644
index 0000000..2dea321
--- /dev/null
+++ b/src/lib/core/refactor/composerStores.ts
@@ -0,0 +1,16 @@
+import { writable } from 'svelte/store';
+
+const composerStores = new Map();
+
+// Create or retrieve a composer store
+export function createComposerStore(composerId: string, initialState = {}) {
+    if (!composerStores.has(composerId)) {
+        composerStores.set(composerId, writable(initialState));
+    }
+    return composerStores.get(composerId);
+}
+
+// Get composer store or create a default empty one if not exists
+export function getComposerStore(composerId: string) {
+    return composerStores.get(composerId) || createComposerStore(composerId);
+}
\ No newline at end of file
diff --git a/src/lib/core/refactor/coreServices.ts b/src/lib/core/refactor/coreServices.ts
new file mode 100644
index 0000000..532725d
--- /dev/null
+++ b/src/lib/core/refactor/coreServices.ts
@@ -0,0 +1,23 @@
+// coreServices.ts
+import { getComposerStore } from './composerStores';
+
+export const coreServices = {
+    updateComposer: (mappings: Record<string, string>) => {
+        for (const [mappingString, value] of Object.entries(mappings)) {
+            const [storeID, key] = mappingString.replace('@', '').split(':');
+            const store = getComposerStore(storeID);
+            store.update(storeData => {
+                storeData[key] = value;
+                return storeData;
+            });
+        }
+    },
+    subscribeComposer: (mappingString: string) => {
+        const [storeID] = mappingString.replace('@', '').split(':');
+        const store = getComposerStore(storeID);
+        return store;
+    },
+    testAlert: () => {
+        alert("core service alert")
+    }
+};
\ No newline at end of file
diff --git a/src/routes/composer/+page.svelte b/src/routes/composer/+page.svelte
new file mode 100644
index 0000000..03bc9ca
--- /dev/null
+++ b/src/routes/composer/+page.svelte
@@ -0,0 +1,59 @@
+<script>
+	import Composer from '$lib/core/refactor/Composer.svelte';
+
+	let composer = {
+		id: 'ComposerParent',
+		layout: {
+			columns: '1fr 1fr',
+			areas: `
+				"left right"
+			`
+		},
+		children: [
+			{
+				id: 'ComposerBob',
+				component: 'ComposerBob',
+				slot: 'left',
+				store: {
+					machine: { state: 'NOTREADY' }
+				},
+				machine: {
+					initial: 'NOTREADY',
+					states: {
+						NOTREADY: {
+							on: { TOGGLE: 'READY' }
+						},
+						READY: {
+							on: { TOGGLE: 'NOTREADY' }
+						}
+					}
+				}
+			},
+			{
+				id: 'ComposerAlice',
+				component: 'ComposerAlice',
+				slot: 'right',
+				machine: {
+					initial: 'RED',
+					states: {
+						GREEN: {
+							on: { SWITCH: 'YELLOW' }
+						},
+						YELLOW: {
+							on: { SWITCH: 'RED' }
+						},
+						RED: {
+							on: { SWITCH: 'GREEN' }
+						}
+					},
+					on: {
+						READY: 'GREEN',
+						NOTREADY: 'RED'
+					}
+				}
+			}
+		]
+	};
+</script>
+
+<Composer {composer} />