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import { AgentStep, AgentTrace, AgentTraceMetadata, FinalStep } from '@/types/agent';
import { create } from 'zustand';
import { devtools } from 'zustand/middleware';
interface AgentState {
// State
trace?: AgentTrace;
isAgentProcessing: boolean;
isConnectingToE2B: boolean; // New state for E2B connection
vncUrl: string;
selectedModelId: string;
availableModels: string[];
isLoadingModels: boolean;
isConnected: boolean;
error?: string;
isDarkMode: boolean;
selectedStepIndex: number | null; // null = live mode, number = viewing specific step or 'final'
finalStep?: FinalStep; // Special step for success/failure
// Actions
setTrace: (trace: AgentTrace | undefined) => void;
updateTraceWithStep: (step: AgentStep, metadata: AgentTraceMetadata) => void;
completeTrace: (metadata: AgentTraceMetadata) => void;
setIsAgentProcessing: (processing: boolean) => void;
setIsConnectingToE2B: (connecting: boolean) => void;
setVncUrl: (url: string) => void;
setSelectedModelId: (modelId: string) => void;
setAvailableModels: (models: string[]) => void;
setIsLoadingModels: (loading: boolean) => void;
setIsConnected: (connected: boolean) => void;
setError: (error: string | undefined) => void;
setSelectedStepIndex: (index: number | null) => void;
toggleDarkMode: () => void;
resetAgent: () => void;
}
const initialState = {
trace: undefined,
isAgentProcessing: false,
isConnectingToE2B: false,
vncUrl: '',
selectedModelId: 'Qwen/Qwen3-VL-30B-A3B-Instruct',
availableModels: [],
isLoadingModels: false,
isConnected: false,
error: undefined,
isDarkMode: false,
selectedStepIndex: null, // null = live mode
finalStep: undefined,
};
export const useAgentStore = create<AgentState>()(
devtools(
(set) => ({
...initialState,
// Set the complete trace
setTrace: (trace) =>
set({ trace }, false, 'setTrace'),
// Update trace with a new step
updateTraceWithStep: (step, metadata) =>
set(
(state) => {
if (!state.trace) return state;
const existingSteps = state.trace.steps || [];
const stepExists = existingSteps.some((s) => s.stepId === step.stepId);
if (stepExists) return state;
// Preserve existing maxSteps if new metadata has 0
const updatedMetadata = {
...metadata,
maxSteps: metadata.maxSteps > 0
? metadata.maxSteps
: (state.trace.traceMetadata?.maxSteps || 200),
};
return {
trace: {
...state.trace,
steps: [...existingSteps, step],
traceMetadata: updatedMetadata,
isRunning: true,
},
};
},
false,
'updateTraceWithStep'
),
// Complete the trace
completeTrace: (metadata) =>
set(
(state) => {
if (!state.trace) return state;
// Preserve existing maxSteps if new metadata has 0
const updatedMetadata = {
...metadata,
maxSteps: metadata.maxSteps > 0
? metadata.maxSteps
: (state.trace.traceMetadata?.maxSteps || 200),
completed: true,
};
// Determine if the task succeeded or failed based on error state
const finalStep: FinalStep = {
type: state.error ? 'failure' : 'success',
message: state.error,
metadata: updatedMetadata,
};
return {
trace: {
...state.trace,
isRunning: false,
traceMetadata: updatedMetadata,
},
finalStep,
// Keep error in state for display
selectedStepIndex: null, // Reset to live mode on completion
};
},
false,
'completeTrace'
),
// Set processing state
setIsAgentProcessing: (isAgentProcessing) =>
set({ isAgentProcessing }, false, 'setIsAgentProcessing'),
// Set E2B connection state
setIsConnectingToE2B: (isConnectingToE2B) =>
set({ isConnectingToE2B }, false, 'setIsConnectingToE2B'),
// Set VNC URL
setVncUrl: (vncUrl) =>
set({ vncUrl }, false, 'setVncUrl'),
// Set selected model ID
setSelectedModelId: (selectedModelId) =>
set({ selectedModelId }, false, 'setSelectedModelId'),
// Set available models
setAvailableModels: (availableModels) =>
set({ availableModels }, false, 'setAvailableModels'),
// Set loading models state
setIsLoadingModels: (isLoadingModels) =>
set({ isLoadingModels }, false, 'setIsLoadingModels'),
// Set connection status
setIsConnected: (isConnected) =>
set({ isConnected }, false, 'setIsConnected'),
// Set error
setError: (error) =>
set(
(state) => {
// If there's an error and a trace, mark it as failed
if (error && state.trace) {
const metadata = state.trace.traceMetadata || {
traceId: state.trace.id,
inputTokensUsed: 0,
outputTokensUsed: 0,
duration: 0,
numberOfSteps: state.trace.steps?.length || 0,
maxSteps: 200,
completed: false,
};
// Ensure maxSteps is not 0
const finalMetadata = {
...metadata,
maxSteps: metadata.maxSteps > 0 ? metadata.maxSteps : 200,
};
const finalStep: FinalStep = {
type: 'failure',
message: error,
metadata: finalMetadata,
};
return {
error,
finalStep,
trace: {
...state.trace,
isRunning: false,
},
selectedStepIndex: null, // Reset to live mode on error
};
}
return { error };
},
false,
'setError'
),
// Set selected step index for time travel
setSelectedStepIndex: (selectedStepIndex) =>
set({ selectedStepIndex }, false, 'setSelectedStepIndex'),
// Toggle dark mode
toggleDarkMode: () =>
set((state) => ({ isDarkMode: !state.isDarkMode }), false, 'toggleDarkMode'),
// Reset agent state
resetAgent: () =>
set((state) => ({
...initialState,
isDarkMode: state.isDarkMode, // Keep dark mode preference
isConnected: state.isConnected, // Keep connection status
selectedModelId: state.selectedModelId, // Keep selected model
availableModels: state.availableModels, // Keep available models
isLoadingModels: state.isLoadingModels // Keep loading state
}), false, 'resetAgent'),
}),
{ name: 'AgentStore' }
)
);
// Selectors for better performance
export const selectTrace = (state: AgentState) => state.trace;
export const selectIsAgentProcessing = (state: AgentState) => state.isAgentProcessing;
export const selectIsConnectingToE2B = (state: AgentState) => state.isConnectingToE2B;
export const selectVncUrl = (state: AgentState) => state.vncUrl;
export const selectSelectedModelId = (state: AgentState) => state.selectedModelId;
export const selectAvailableModels = (state: AgentState) => state.availableModels;
export const selectIsLoadingModels = (state: AgentState) => state.isLoadingModels;
export const selectIsConnected = (state: AgentState) => state.isConnected;
export const selectSteps = (state: AgentState) => state.trace?.steps;
export const selectMetadata = (state: AgentState) => state.trace?.traceMetadata;
export const selectError = (state: AgentState) => state.error;
export const selectIsDarkMode = (state: AgentState) => state.isDarkMode;
export const selectSelectedStepIndex = (state: AgentState) => state.selectedStepIndex;
export const selectFinalStep = (state: AgentState) => state.finalStep;
// Composite selector for selected step (avoids infinite loops)
export const selectSelectedStep = (state: AgentState) => {
const steps = state.trace?.steps;
const selectedIndex = state.selectedStepIndex;
if (selectedIndex === null || !steps || selectedIndex >= steps.length) {
return null;
}
return steps[selectedIndex];
};
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