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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;
traceId: string | null; // Set by backend heartbeat, persists during connection
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;
setTraceId: (traceId: string | null) => void;
updateTraceWithStep: (step: AgentStep, metadata: AgentTraceMetadata) => void;
updateStepEvaluation: (stepId: string, evaluation: 'like' | 'dislike' | 'neutral') => void;
updateTraceEvaluation: (evaluation: 'success' | 'failed' | 'not_evaluated') => void;
completeTrace: (metadata: AgentTraceMetadata, finalState?: 'success' | 'stopped' | 'max_steps_reached' | 'error' | 'sandbox_timeout') => 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,
traceId: null, // Will be set by backend heartbeat
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'),
// Set trace ID (set by backend heartbeat, only cleared on disconnect)
setTraceId: (traceId) =>
set({ traceId }, false, 'setTraceId'),
// 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'
),
// Update step evaluation in the store
updateStepEvaluation: (stepId, evaluation) =>
set(
(state) => {
if (!state.trace || !state.trace.steps) return state;
const updatedSteps = state.trace.steps.map((step) =>
step.stepId === stepId
? { ...step, step_evaluation: evaluation }
: step
);
return {
trace: {
...state.trace,
steps: updatedSteps,
},
};
},
false,
'updateStepEvaluation'
),
// Update trace evaluation in the store
updateTraceEvaluation: (evaluation) =>
set(
(state) => {
if (!state.trace || !state.trace.traceMetadata) return state;
const updatedMetadata = {
...state.trace.traceMetadata,
user_evaluation: evaluation,
};
return {
trace: {
...state.trace,
traceMetadata: updatedMetadata,
},
// Also update finalStep metadata if it exists
finalStep: state.finalStep ? {
...state.finalStep,
metadata: {
...state.finalStep.metadata,
user_evaluation: evaluation,
},
} : state.finalStep,
};
},
false,
'updateTraceEvaluation'
),
// Complete the trace
completeTrace: (metadata, finalState?: 'success' | 'stopped' | 'max_steps_reached' | 'error' | 'sandbox_timeout') =>
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 the final step type based on final_state from backend
let stepType: 'success' | 'failure' | 'stopped' | 'max_steps_reached' | 'sandbox_timeout';
let stepMessage: string | undefined;
if (finalState === 'stopped') {
stepType = 'stopped';
stepMessage = 'Task stopped by user';
} else if (finalState === 'max_steps_reached') {
stepType = 'max_steps_reached';
stepMessage = 'Maximum steps reached';
} else if (finalState === 'sandbox_timeout') {
stepType = 'sandbox_timeout';
stepMessage = 'Sandbox timeout';
} else if (finalState === 'error' || state.error) {
stepType = 'failure';
stepMessage = state.error || 'Task failed';
} else {
stepType = 'success';
stepMessage = undefined;
}
const finalStep: FinalStep = {
type: stepType,
message: stepMessage,
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,
final_state: null,
user_evaluation: 'not_evaluated' as const,
};
// Ensure maxSteps is not 0
const finalMetadata: AgentTraceMetadata = {
...metadata,
maxSteps: metadata.maxSteps > 0 ? metadata.maxSteps : 200,
final_state: metadata.final_state || null,
user_evaluation: metadata.user_evaluation || 'not_evaluated',
};
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 (but preserve traceId from backend during connection)
resetAgent: () =>
set((state) => ({
...initialState,
traceId: state.traceId, // IMPORTANT: Keep traceId from backend
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 selectTraceId = (state: AgentState) => state.traceId;
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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