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High Level Architecture

tools/server/webui/docs/architecture/high-level-architecture.md

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mermaid
flowchart TB
subgraph Routes["📍 Routes"]
R1["/ (+page.svelte)"]
R2["/chat/[id]"]
RL["+layout.svelte"]
end

    subgraph Components["🧩 Components"]
        direction TB
        subgraph LayoutComponents["Layout"]
            C_Sidebar["ChatSidebar"]
            C_Screen["ChatScreen"]
        end
        subgraph ChatUIComponents["Chat UI"]
            C_Form["ChatForm"]
            C_Messages["ChatMessages"]
            C_Message["ChatMessage"]
            C_MessageUser["ChatMessageUser"]
            C_MessageEditForm["ChatMessageEditForm"]
            C_Attach["ChatAttachments"]
            C_ModelsSelector["ModelsSelector"]
            C_Settings["ChatSettings"]
        end
        subgraph MCPComponents["MCP UI"]
            C_McpSettings["McpServersSettings"]
            C_McpServerCard["McpServerCard"]
            C_McpResourceBrowser["McpResourceBrowser"]
            C_McpResourcePreview["McpResourcePreview"]
            C_McpServersSelector["McpServersSelector"]
        end
    end

    subgraph Hooks["🪝 Hooks"]
        H1["useModelChangeValidation"]
        H2["useProcessingState"]
        H3["isMobile"]
    end

    subgraph Stores["🗄️ Stores"]
        direction TB
        subgraph S1["chatStore"]
            S1State["<b>State:</b>
isLoading, currentResponse
errorDialogState
activeProcessingState
chatLoadingStates
chatStreamingStates
abortControllers
processingStates
activeConversationId
isStreamingActive"]
            S1LoadState["<b>Loading State:</b>
setChatLoading()
isChatLoading()
syncLoadingStateForChat()
clearUIState()
isChatLoadingPublic()
getAllLoadingChats()
getAllStreamingChats()"]
            S1ProcState["<b>Processing State:</b>
setActiveProcessingConversation()
getProcessingState()
clearProcessingState()
getActiveProcessingState()
updateProcessingStateFromTimings()
getCurrentProcessingStateSync()
restoreProcessingStateFromMessages()"]
            S1Stream["<b>Streaming:</b>
streamChatCompletion()
startStreaming()
stopStreaming()
stopGeneration()
isStreaming()"]
            S1Error["<b>Error Handling:</b>
showErrorDialog()
dismissErrorDialog()
isAbortError()"]
            S1Msg["<b>Message Operations:</b>
addMessage()
sendMessage()
updateMessage()
deleteMessage()
getDeletionInfo()"]
            S1Regen["<b>Regeneration:</b>
regenerateMessage()
regenerateMessageWithBranching()
continueAssistantMessage()"]
            S1Edit["<b>Editing:</b>
editAssistantMessage()
editUserMessagePreserveResponses()
editMessageWithBranching()
clearEditMode()
isEditModeActive()
getAddFilesHandler()
setEditModeActive()"]
            S1Utils["<b>Utilities:</b>
getApiOptions()
parseTimingData()
getOrCreateAbortController()
getConversationModel()"]
        end
        subgraph SA["agenticStore"]
            SAState["<b>State:</b>
sessions (Map)
isAnyRunning"]
            SASession["<b>Session Management:</b>
getSession()
updateSession()
clearSession()
getActiveSessions()
isRunning()
currentTurn()
totalToolCalls()
lastError()
streamingToolCall()"]
            SAConfig["<b>Configuration:</b>
getConfig()
maxTurns, maxToolPreviewLines"]
            SAFlow["<b>Agentic Loop:</b>
runAgenticFlow()
executeAgenticLoop()
normalizeToolCalls()
emitToolCallResult()
extractBase64Attachments()"]
        end
        subgraph S2["conversationsStore"]
            S2State["<b>State:</b>
conversations
activeConversation
activeMessages
isInitialized
pendingMcpServerOverrides
titleUpdateConfirmationCallback"]
            S2Lifecycle["<b>Lifecycle:</b>
initialize()
loadConversations()
clearActiveConversation()"]
            S2ConvCRUD["<b>Conversation CRUD:</b>
createConversation()
loadConversation()
deleteConversation()
deleteAll()
updateConversationName()
updateConversationTitleWithConfirmation()"]
            S2MsgMgmt["<b>Message Management:</b>
refreshActiveMessages()
addMessageToActive()
updateMessageAtIndex()
findMessageIndex()
sliceActiveMessages()
removeMessageAtIndex()
getConversationMessages()"]
            S2Nav["<b>Navigation:</b>
navigateToSibling()
updateCurrentNode()
updateConversationTimestamp()"]
            S2McpOverrides["<b>MCP Per-Chat Overrides:</b>
getMcpServerOverride()
getAllMcpServerOverrides()
setMcpServerOverride()
toggleMcpServerForChat()
removeMcpServerOverride()
isMcpServerEnabledForChat()
clearPendingMcpServerOverrides()"]
            S2Export["<b>Import/Export:</b>
downloadConversation()
exportAllConversations()
importConversations()
importConversationsData()
triggerDownload()"]
            S2Utils["<b>Utilities:</b>
setTitleUpdateConfirmationCallback()"]
        end
        subgraph S3["modelsStore"]
            S3State["<b>State:</b>
models, routerModels
selectedModelId
selectedModelName
loading, updating, error
modelLoadingStates
modelPropsCache
modelPropsFetching
propsCacheVersion"]
            S3Getters["<b>Computed Getters:</b>
selectedModel
loadedModelIds
loadingModelIds
singleModelName"]
            S3Modal["<b>Modalities:</b>
getModelModalities()
modelSupportsVision()
modelSupportsAudio()
getModelModalitiesArray()
getModelProps()
updateModelModalities()"]
            S3Status["<b>Status Queries:</b>
isModelLoaded()
isModelOperationInProgress()
getModelStatus()
isModelPropsFetching()"]
            S3Fetch["<b>Data Fetching:</b>
fetch()
fetchRouterModels()
fetchModelProps()
fetchModalitiesForLoadedModels()"]
            S3Select["<b>Model Selection:</b>
selectModelById()
selectModelByName()
clearSelection()
findModelByName()
findModelById()
hasModel()"]
            S3LoadUnload["<b>Loading/Unloading Models:</b>
loadModel()
unloadModel()
ensureModelLoaded()
waitForModelStatus()
pollForModelStatus()"]
            S3Utils["<b>Utilities:</b>
toDisplayName()
clear()"]
        end
        subgraph S4["serverStore"]
            S4State["<b>State:</b>
props
loading, error
role
fetchPromise"]
            S4Getters["<b>Getters:</b>
defaultParams
contextSize
isRouterMode
isModelMode"]
            S4Data["<b>Data Handling:</b>
fetch()
getErrorMessage()
clear()"]
            S4Utils["<b>Utilities:</b>
detectRole()"]
        end
        subgraph S5["settingsStore"]
            S5State["<b>State:</b>
config
theme
isInitialized
userOverrides"]
            S5Lifecycle["<b>Lifecycle:</b>
initialize()
loadConfig()
saveConfig()
loadTheme()
saveTheme()"]
            S5Update["<b>Config Updates:</b>
updateConfig()
updateMultipleConfig()
updateTheme()"]
            S5Reset["<b>Reset:</b>
resetConfig()
resetTheme()
resetAll()
resetParameterToServerDefault()"]
            S5Sync["<b>Server Sync:</b>
syncWithServerDefaults()
forceSyncWithServerDefaults()"]
            S5Utils["<b>Utilities:</b>
getConfig()
getAllConfig()
getParameterInfo()
getParameterDiff()
getServerDefaults()
clearAllUserOverrides()"]
        end
        subgraph S6["mcpStore"]
            S6State["<b>State:</b>
isInitializing, error
toolCount, connectedServers
healthChecks (Map)
connections (Map)
toolsIndex (Map)"]
            S6Lifecycle["<b>Lifecycle:</b>
ensureInitialized()
initialize()
shutdown()
acquireConnection()
releaseConnection()"]
            S6Health["<b>Health Checks:</b>
runHealthCheck()
runHealthChecksForServers()
updateHealthCheck()
getHealthCheckState()
clearHealthCheck()"]
            S6Servers["<b>Server Management:</b>
getServers()
addServer()
updateServer()
removeServer()
getServerById()
getServerDisplayName()"]
            S6Tools["<b>Tool Operations:</b>
getToolDefinitionsForLLM()
getToolNames()
hasTool()
getToolServer()
executeTool()
executeToolByName()"]
            S6Prompts["<b>Prompt Operations:</b>
getAllPrompts()
getPrompt()
hasPromptsCapability()
getPromptCompletions()"]
        end
        subgraph S7["mcpResourceStore"]
            S7State["<b>State:</b>
serverResources (Map)
cachedResources (Map)
subscriptions (Map)
attachments[]
isLoading"]
            S7Resources["<b>Resource Discovery:</b>
setServerResources()
getServerResources()
getAllResourceInfos()
getAllTemplateInfos()
clearServerResources()"]
            S7Cache["<b>Caching:</b>
cacheResourceContent()
getCachedContent()
invalidateCache()
clearCache()"]
            S7Subs["<b>Subscriptions:</b>
addSubscription()
removeSubscription()
isSubscribed()
handleResourceUpdate()"]
            S7Attach["<b>Attachments:</b>
addAttachment()
updateAttachmentContent()
removeAttachment()
clearAttachments()
toMessageExtras()"]
        end

        subgraph ReactiveExports["⚡ Reactive Exports"]
            direction LR
            subgraph ChatExports["chatStore"]
                RE1["isLoading()"]
                RE2["currentResponse()"]
                RE3["errorDialog()"]
                RE4["activeProcessingState()"]
                RE5["isChatStreaming()"]
                RE6["isChatLoading()"]
                RE7["getChatStreaming()"]
                RE8["getAllLoadingChats()"]
                RE9["getAllStreamingChats()"]
                RE9a["isEditModeActive()"]
                RE9b["getAddFilesHandler()"]
                RE9c["setEditModeActive()"]
                RE9d["clearEditMode()"]
            end
            subgraph AgenticExports["agenticStore"]
                REA1["agenticIsRunning()"]
                REA2["agenticCurrentTurn()"]
                REA3["agenticTotalToolCalls()"]
                REA4["agenticLastError()"]
                REA5["agenticStreamingToolCall()"]
                REA6["agenticIsAnyRunning()"]
            end
            subgraph ConvExports["conversationsStore"]
                RE10["conversations()"]
                RE11["activeConversation()"]
                RE12["activeMessages()"]
                RE13["isConversationsInitialized()"]
            end
            subgraph ModelsExports["modelsStore"]
                RE15["modelOptions()"]
                RE16["routerModels()"]
                RE17["modelsLoading()"]
                RE18["modelsUpdating()"]
                RE19["modelsError()"]
                RE20["selectedModelId()"]
                RE21["selectedModelName()"]
                RE22["selectedModelOption()"]
                RE23["loadedModelIds()"]
                RE24["loadingModelIds()"]
                RE25["propsCacheVersion()"]
                RE26["singleModelName()"]
            end
            subgraph ServerExports["serverStore"]
                RE27["serverProps()"]
                RE28["serverLoading()"]
                RE29["serverError()"]
                RE30["serverRole()"]
                RE31["defaultParams()"]
                RE32["contextSize()"]
                RE33["isRouterMode()"]
                RE34["isModelMode()"]
            end
            subgraph SettingsExports["settingsStore"]
                RE35["config()"]
                RE36["theme()"]
                RE37["isInitialized()"]
            end
            subgraph MCPExports["mcpStore / mcpResourceStore"]
                RE38["mcpResources()"]
                RE39["mcpResourceAttachments()"]
                RE40["mcpHasResourceAttachments()"]
                RE41["mcpTotalResourceCount()"]
                RE42["mcpResourcesLoading()"]
            end
        end
    end

    subgraph Services["⚙️ Services"]
        direction TB
        subgraph SV1["ChatService"]
            SV1Msg["<b>Messaging:</b>
sendMessage()"]
            SV1Stream["<b>Streaming:</b>
handleStreamResponse()
handleNonStreamResponse()"]
            SV1Convert["<b>Conversion:</b>
convertDbMessageToApiChatMessageData()
mergeToolCallDeltas()"]
            SV1Utils["<b>Utilities:</b>
stripReasoningContent()
extractModelName()
parseErrorResponse()"]
        end
        subgraph SV2["ModelsService"]
            SV2List["<b>Listing:</b>
list()
listRouter()"]
            SV2LoadUnload["<b>Load/Unload:</b>
load()
unload()"]
            SV2Status["<b>Status:</b>
isModelLoaded()
isModelLoading()"]
        end
        subgraph SV3["PropsService"]
            SV3Fetch["<b>Fetching:</b>
fetch()
fetchForModel()"]
        end
        subgraph SV4["DatabaseService"]
            SV4Conv["<b>Conversations:</b>
createConversation()
getConversation()
getAllConversations()
updateConversation()
deleteConversation()"]
            SV4Msg["<b>Messages:</b>
createMessageBranch()
createRootMessage()
createSystemMessage()
getConversationMessages()
updateMessage()
deleteMessage()
deleteMessageCascading()"]
            SV4Node["<b>Navigation:</b>
updateCurrentNode()"]
            SV4Import["<b>Import:</b>
importConversations()"]
        end
        subgraph SV5["ParameterSyncService"]
            SV5Extract["<b>Extraction:</b>
extractServerDefaults()"]
            SV5Merge["<b>Merging:</b>
mergeWithServerDefaults()"]
            SV5Info["<b>Info:</b>
getParameterInfo()
canSyncParameter()
getSyncableParameterKeys()
validateServerParameter()"]
            SV5Diff["<b>Diff:</b>
createParameterDiff()"]
        end
        subgraph SV6["MCPService"]
            SV6Transport["<b>Transport:</b>
createTransport()
WebSocket / StreamableHTTP / SSE"]
            SV6Conn["<b>Connection:</b>
connect()
disconnect()"]
            SV6Tools["<b>Tools:</b>
listTools()
callTool()"]
            SV6Prompts["<b>Prompts:</b>
listPrompts()
getPrompt()"]
            SV6Resources["<b>Resources:</b>
listResources()
listResourceTemplates()
readResource()
subscribeResource()
unsubscribeResource()"]
            SV6Complete["<b>Completions:</b>
complete()"]
        end
    end

    subgraph ExternalMCP["🔌 External MCP Servers"]
        EXT1["MCP Server 1
(WebSocket/StreamableHTTP/SSE)"]
        EXT2["MCP Server N"]
    end

    subgraph Storage["💾 Storage"]
        ST1["IndexedDB"]
        ST2["conversations"]
        ST3["messages"]
        ST5["LocalStorage"]
        ST6["config"]
        ST7["userOverrides"]
        ST8["mcpServers"]
    end

    subgraph APIs["🌐 llama-server API"]
        API1["/v1/chat/completions"]
        API2["/props
/props?model="]
        API3["/models
/models/load
/models/unload"]
        API4["/v1/models"]
    end

    %% Routes render Components
    R1 --> C_Screen
    R2 --> C_Screen
    RL --> C_Sidebar

    %% Layout runs MCP health checks on startup
    RL --> S6

    %% Component hierarchy
    C_Screen --> C_Form & C_Messages & C_Settings
    C_Messages --> C_Message
    C_Message --> C_MessageUser
    C_MessageUser --> C_MessageEditForm
    C_MessageEditForm --> C_ModelsSelector
    C_MessageEditForm --> C_Attach
    C_Form --> C_ModelsSelector
    C_Form --> C_Attach
    C_Form --> C_McpServersSelector
    C_Message --> C_Attach

    %% MCP Components hierarchy
    C_Settings --> C_McpSettings
    C_McpSettings --> C_McpServerCard
    C_McpServerCard --> C_McpResourceBrowser
    C_McpResourceBrowser --> C_McpResourcePreview

    %% Components use Hooks
    C_Form --> H1
    C_Message --> H1 & H2
    C_MessageEditForm --> H1
    C_Screen --> H2

    %% Hooks use Stores
    H1 --> S3 & S4
    H2 --> S1 & S5

    %% Components use Stores
    C_Screen --> S1 & S2
    C_Messages --> S2
    C_Message --> S1 & S2 & S3
    C_Form --> S1 & S3 & S6
    C_Sidebar --> S2
    C_ModelsSelector --> S3 & S4
    C_Settings --> S5
    C_McpSettings --> S6
    C_McpServerCard --> S6
    C_McpResourceBrowser --> S6 & S7
    C_McpServersSelector --> S6

    %% Stores export Reactive State
    S1 -. exports .-> ChatExports
    SA -. exports .-> AgenticExports
    S2 -. exports .-> ConvExports
    S3 -. exports .-> ModelsExports
    S4 -. exports .-> ServerExports
    S5 -. exports .-> SettingsExports
    S6 -. exports .-> MCPExports
    S7 -. exports .-> MCPExports

    %% chatStore → agenticStore (agentic loop orchestration)
    S1 --> SA
    SA --> SV1
    SA --> S6

    %% Stores use Services
    S1 --> SV1 & SV4
    S2 --> SV4
    S3 --> SV2 & SV3
    S4 --> SV3
    S5 --> SV5
    S6 --> SV6
    S7 --> SV6

    %% Services to Storage
    SV4 --> ST1
    ST1 --> ST2 & ST3
    SV5 --> ST5
    ST5 --> ST6 & ST7 & ST8

    %% Services to APIs
    SV1 --> API1
    SV2 --> API3 & API4
    SV3 --> API2

    %% MCP → External Servers
    SV6 --> EXT1 & EXT2

    %% Styling
    classDef routeStyle fill:#e1f5fe,stroke:#01579b,stroke-width:2px
    classDef componentStyle fill:#f3e5f5,stroke:#7b1fa2,stroke-width:2px
    classDef componentGroupStyle fill:#e1bee7,stroke:#7b1fa2,stroke-width:1px
    classDef hookStyle fill:#fff8e1,stroke:#ff8f00,stroke-width:2px
    classDef storeStyle fill:#fff3e0,stroke:#e65100,stroke-width:2px
    classDef stateStyle fill:#ffe0b2,stroke:#e65100,stroke-width:1px
    classDef methodStyle fill:#ffecb3,stroke:#e65100,stroke-width:1px
    classDef reactiveStyle fill:#fffde7,stroke:#f9a825,stroke-width:1px
    classDef serviceStyle fill:#e8f5e9,stroke:#2e7d32,stroke-width:2px
    classDef serviceMStyle fill:#c8e6c9,stroke:#2e7d32,stroke-width:1px
    classDef externalStyle fill:#f3e5f5,stroke:#6a1b9a,stroke-width:2px,stroke-dasharray: 5 5
    classDef storageStyle fill:#fce4ec,stroke:#c2185b,stroke-width:2px
    classDef apiStyle fill:#e3f2fd,stroke:#1565c0,stroke-width:2px

    class R1,R2,RL routeStyle
    class C_Sidebar,C_Screen,C_Form,C_Messages,C_Message,C_MessageUser,C_MessageEditForm componentStyle
    class C_ModelsSelector,C_Settings componentStyle
    class C_Attach componentStyle
    class C_McpSettings,C_McpServerCard,C_McpResourceBrowser,C_McpResourcePreview,C_McpServersSelector componentStyle
    class H1,H2,H3 hookStyle
    class LayoutComponents,ChatUIComponents,MCPComponents componentGroupStyle
    class Hooks hookStyle
    classDef agenticStyle fill:#e8eaf6,stroke:#283593,stroke-width:2px
    classDef agenticMethodStyle fill:#c5cae9,stroke:#283593,stroke-width:1px

    class S1,S2,S3,S4,S5,SA,S6,S7 storeStyle
    class S1State,S2State,S3State,S4State,S5State,SAState,S6State,S7State stateStyle
    class S1Msg,S1Regen,S1Edit,S1Stream,S1LoadState,S1ProcState,S1Error,S1Utils methodStyle
    class SASession,SAConfig,SAFlow methodStyle
    class S2Lifecycle,S2ConvCRUD,S2MsgMgmt,S2Nav,S2McpOverrides,S2Export,S2Utils methodStyle
    class S3Getters,S3Modal,S3Status,S3Fetch,S3Select,S3LoadUnload,S3Utils methodStyle
    class S4Getters,S4Data,S4Utils methodStyle
    class S5Lifecycle,S5Update,S5Reset,S5Sync,S5Utils methodStyle
    class S6Lifecycle,S6Health,S6Servers,S6Tools,S6Prompts methodStyle
    class S7Resources,S7Cache,S7Subs,S7Attach methodStyle
    class ChatExports,AgenticExports,ConvExports,ModelsExports,ServerExports,SettingsExports,MCPExports reactiveStyle
    class SV1,SV2,SV3,SV4,SV5,SV6 serviceStyle
    class SV6Transport,SV6Conn,SV6Tools,SV6Prompts,SV6Resources,SV6Complete serviceMStyle
    class EXT1,EXT2 externalStyle
    class SV1Msg,SV1Stream,SV1Convert,SV1Utils serviceMStyle
    class SV2List,SV2LoadUnload,SV2Status serviceMStyle
    class SV3Fetch serviceMStyle
    class SV4Conv,SV4Msg,SV4Node,SV4Import serviceMStyle
    class SV5Extract,SV5Merge,SV5Info,SV5Diff serviceMStyle
    class ST1,ST2,ST3,ST5,ST6,ST7,ST8 storageStyle
    class API1,API2,API3,API4 apiStyle