/**
 * useWorkspace — Workspace items management
 *
 * Manages workspace items generated from AI workflow responses.
 * Items are persisted and filterable by workflow type.
 */

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

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

  const workspaceItems = ref<WorkspaceItem[]>(
    loadValue<WorkspaceItem[]>(STORAGE_KEYS.WORKSPACE, [])
  )

  function persist(): void {
    saveValue(STORAGE_KEYS.WORKSPACE, workspaceItems.value)
  }

  /**
   * Add a new workspace item.
   */
  function addWorkspaceItem(item: WorkspaceItem): void {
    workspaceItems.value.unshift(item)
    persist()
  }

  /**
   * Remove a workspace item by ID.
   */
  function removeWorkspaceItem(id: string): void {
    workspaceItems.value = workspaceItems.value.filter((item) => item.id !== id)
    persist()
  }

  /**
   * Get workspace items filtered by workflow type.
   */
  function getItemsByWorkflow(workflowId: WorkflowId): WorkspaceItem[] {
    return workspaceItems.value.filter((item) => item.workflowId === workflowId)
  }

  /**
   * Get workspace item by ID.
   */
  function getItemById(id: string): WorkspaceItem | undefined {
    return workspaceItems.value.find((item) => item.id === id)
  }

  /**
   * Clear all workspace items.
   */
  function clearAll(): void {
    workspaceItems.value = []
    persist()
  }

  return {
    workspaceItems,
    addWorkspaceItem,
    removeWorkspaceItem,
    getItemsByWorkflow,
    getItemById,
    clearAll,
  }
}