/**
 * useWorkflow — Current workflow selection state
 *
 * Manages which workflow is active (general, code, document, data, creative).
 * The selection is persisted so it survives app restarts.
 */

import type { WorkflowId, WorkflowDef } from '@/types/index'
import { WORKFLOWS, STORAGE_KEYS } from '@/constants/index'
import { useStorage } from './useStorage'

export function useWorkflow() {
  const { loadValue, saveValue } = useStorage()

  // Initialize from storage, fallback to 'general'
  const activeWorkflowId = ref<WorkflowId>(
    loadValue<WorkflowId>(STORAGE_KEYS.ACTIVE_WORKFLOW_ID, 'general')
  )

  // All available workflows (static)
  const workflows: WorkflowDef[] = WORKFLOWS

  // Computed: the currently active workflow definition
  const activeWorkflow = computed<WorkflowDef>(() => {
    const found = workflows.find((w) => w.id === activeWorkflowId.value)
    return found ?? workflows[0]
  })

  /**
   * Select a workflow and persist the choice.
   */
  function selectWorkflow(id: WorkflowId): void {
    activeWorkflowId.value = id
    saveValue(STORAGE_KEYS.ACTIVE_WORKFLOW_ID, id)
  }

  return {
    activeWorkflowId,
    workflows,
    activeWorkflow,
    selectWorkflow,
  }
}