All files / src/domains/hands machine.ts

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/**
 * Hands State Machine
 *
 * XState machine for managing hand execution lifecycle.
 * Provides predictable state transitions for automation tasks.
 */
import { setup, assign } from 'xstate';
import type { HandContext, HandsEvent } from './types';
 
// === Machine Setup ===
 
export const handMachine = setup({
  types: {
    context: {} as HandContext,
    events: {} as HandsEvent,
  },
  actions: {
    setRunId: assign({
      runId: (_, params: { runId: string }) => params.runId,
    }),
    setError: assign({
      error: (_, params: { error: string }) => params.error,
    }),
    setResult: assign({
      result: (_, params: { result: unknown }) => params.result,
    }),
    setProgress: assign({
      progress: (_, params: { progress: number }) => params.progress,
    }),
    clearError: assign({
      error: null,
    }),
    resetContext: assign({
      runId: null,
      error: null,
      result: null,
      progress: 0,
    }),
  },
  guards: {
    hasError: ({ context }) => context.error !== null,
    isApproved: ({ event }) => event.type === 'APPROVE',
  },
}).createMachine({
  id: 'hand',
  initial: 'idle',
  context: {
    handId: '',
    handName: '',
    runId: null,
    error: null,
    result: null,
    progress: 0,
  },
  states: {
    idle: {
      on: {
        START: {
          target: 'running',
          actions: {
            type: 'setRunId',
            params: () => ({ runId: `run_${Date.now()}` }),
          },
        },
      },
    },
    running: {
      entry: assign({ progress: 0 }),
      on: {
        APPROVE: {
          target: 'needs_approval',
        },
        COMPLETE: {
          target: 'success',
          actions: {
            type: 'setResult',
            params: ({ event }) => ({ result: (event as { result: unknown }).result }),
          },
        },
        ERROR: {
          target: 'error',
          actions: {
            type: 'setError',
            params: ({ event }) => ({ error: (event as { error: string }).error }),
          },
        },
        CANCEL: {
          target: 'cancelled',
        },
      },
    },
    needs_approval: {
      on: {
        APPROVE: 'running',
        REJECT: 'idle',
        CANCEL: 'idle',
      },
    },
    success: {
      on: {
        RESET: {
          target: 'idle',
          actions: 'resetContext',
        },
        START: {
          target: 'running',
          actions: {
            type: 'setRunId',
            params: () => ({ runId: `run_${Date.now()}` }),
          },
        },
      },
    },
    error: {
      on: {
        RESET: {
          target: 'idle',
          actions: 'resetContext',
        },
        START: {
          target: 'running',
          actions: {
            type: 'setRunId',
            params: () => ({ runId: `run_${Date.now()}` }),
          },
        },
      },
    },
    cancelled: {
      on: {
        RESET: {
          target: 'idle',
          actions: 'resetContext',
        },
        START: {
          target: 'running',
          actions: {
            type: 'setRunId',
            params: () => ({ runId: `run_${Date.now()}` }),
          },
        },
      },
    },
  },
});
 
// === Helper to get status from machine state ===
 
export function getHandStatusFromState(stateValue: string): import('./types').HandStatus {
  switch (stateValue) {
    case 'idle':
      return 'idle';
    case 'running':
      return 'running';
    case 'needs_approval':
      return 'needs_approval';
    case 'success':
      return 'idle'; // Success maps back to idle
    case 'error':
      return 'error';
    case 'cancelled':
      return 'idle';
    default:
      return 'idle';
  }
}