Hybrid OSI model graph for SavingCaustic DAW

march25.md

flowchart TD
    %% Define color styles
    classDef baseLayer fill:#d4f1f9,stroke:#05a,stroke-width:2px
    classDef coreLayer fill:#ffe6cc,stroke:#d79b00,stroke-width:2px
    classDef derivedLayer fill:#d5e8d4,stroke:#82b366,stroke-width:2px
    classDef routerLayer fill:#e1d5e7,stroke:#9673a6,stroke-width:2px
    classDef platformLayer fill:#f5f5f5,stroke:#666,stroke-width:2px

    %% Platform Layer
    subgraph "Layer 1: Webview Container"
        L1["/static/frame.html"] --> Webview["Browser/WebView"]
        Webview --> Scaling["UI Scaling"]
    end
    class Layer1 platformLayer

    %% Base Layer
    subgraph "Interal Layers"
        subgraph "Layer 3: Internal UI"
            InternalUI["$lib/internal"] --> UIKnobs["Knob Components"]
            InternalUI --> UIButtons["Button Components"]
            InternalUI --> UISliders["Slider Components"]
        end

        subgraph "Layer 4: Module"
            L4["Module Files"] --> FunctionalUnits["Functional Units"]
            FunctionalUnits --> Synths["Synthesizers"]
            FunctionalUnits --> Effects["Audio Effects"]
            FunctionalUnits --> Processors["MIDI Processors"]
        end
    end
    class BaseLayer,Layer3,Layer4 baseLayer

    %% Derived Layer
    subgraph "External Layers"
        subgraph "Layer 5: Page / Module Host"
            L5["Page Files"] --> ModuleHost["Module Host"]
            ModuleHost --> StateData["State Management"]
            ModuleHost --> DynamicModules["Dynamic Module Loading"]
            ModuleHost --> LayoutManagement["Layout Management"]
        end

        subgraph "Layer 6: Window Manager"
            L6["Window Manager Files"] --> WindowSystem["Window System"]
            WindowSystem --> Modals["Modal Windows"]
            WindowSystem --> DraggableWindows["Draggable Windows"]
            WindowSystem --> Overlays["Overlays"]
        end

		%% Static Assets
    subgraph "Layer 2: Static Assets & Response APIs"
        Assets["Static Assets"] --> InteractionTypes
        CSS["CSS Stylesheet"] -- apply UI styles at build time --> WebApp
        WebApp["Browser DOM entry point app.html"] --> TouchEvents["Multitouch Events"]
        TouchEvents --> InteractionTypes["Touch Interaction Types"]
        InteractionTypes --> Knobs["Knobs (delta-X/Y)"]
        InteractionTypes --> Keys["Keys (on/off)"]
        InteractionTypes --> Sliders["Sliders"]
    end

    end
    class DerivedLayer,Layer2,Layer5,Layer6,Layer7 derivedLayer

    %% SvelteKit Router
    subgraph "SvelteKit"
        Router["Router"] --> Routes["+page.svelte"]
        Preprocessor -- serve static files on build --> Assets
        Router --> AppServerFiles
        Layouts --> WebSockets["WebSocket Communication"]
        Router --> Layouts["+layout.svelte"]
        Router --> APIRoutes["API Routes"]
        Routes --> DynamicRoutes["Dynamic Routes [slug]"]

		subgraph "Layer 7: App Definition"
            AppServerFiles["Web App Server"]
            AppServerFiles --> Navigation["Navigation Flow"]
            AppServerFiles --> UXConsistency["UX Consistency"]
        end
    end
    class SvelteKitRouter routerLayer

    %% C++ Backend
    subgraph "Core Layer: C++ Backend"
        CPP["C++ Engine"] --> AudioEngine["Audio Processing"]
        CPP --> MIDIEngine["MIDI Processing"]
        CPP --> SocketServer["WebSocket Server"]
    end
    class CoreLayerCBackend coreLayer

    %% Connections between elements
    Scaling -- guard for cross-platform responsiveness --> WebApp
    WebSockets <--> SocketServer
    TouchEvents --> InternalUI
    InternalUI --> FunctionalUnits
    FunctionalUnits --> ModuleHost
    ModuleHost --> Router
    WindowSystem --> ModuleHost
    Router --> ModuleHost
    CPP <--> L4

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Hi and thanks for your reflections! Yes I realize i've got some Svelte 4 code in the project currently. I could pass the blame to ChatGPT who hasn't updated its recommendations to Svelte5. I took the tour in SvelteKit (that I thought i could be without - not needing SSR), but realize it's well worth understanding SvelteKit too. So update to Svelte 5 is on its way.

Regarding FE-layers, maybe work done in Firefox OS or Tizen could be relevant?

Sorry for the noob question, but that diagram - how do i zoom in on it?

hey! If you've worked on Tizen and Firefox previously then you're way ahead of me!

For Svelte 5 not having been trained into LLMs yet, I know what you mean. It's a frequently recurring thread on the Svelte Discord channels.

Two potential options for that:

1. LLM-friendly codified version of the Svelte docs: https://svelte.dev/docs/llms
2. ChatGPT specific Svelte docs to include in context: https://chatgpt.com/g/g-Knj6VxTpl-svelte-5-sveltekit-sage

I use Claude more than any other LLM so I can't say if either of the two options above are effective.

Sorry for the noob question, but that diagram - how do i zoom in on it?

No worries, I think I'm the one with a mermaid graph obsession.

It depends on the browser but usually on the Github website there should be controls in a bottom-right overlay on the diagram to move around and zoom in/out.

But honestly it's way more convenient to just copy the raw diagram code and paste it into a full-screen markdown editor (i mockup all my diagrams in Obsidian).

haha, no sorry haven't worked on neither of those places - just considering that they've might have concepts that one could jack in to. touch-interaction / display / events etc - Maybe back to Xerox PARC?! :) So finding the long-life concepts - and mapping those to Svelte bits. :)

haha, no sorry haven't worked on neither of those places - just considering that they've might have concepts that one could jack in to. touch-interaction / display / events etc - Maybe back to Xerox PARC?! :) So finding the long-life concepts - and mapping those to Svelte bits. :)

Ok gotcha, understood 👍