import { createApp, h } from 'vue'
import ToastComponent from '@/components/Toast.vue'

const toastContainers = new Map<string, { instance: ReturnType<typeof createApp>, container: HTMLDivElement }>()

export const useToast = () => {
  const showToast = (options: { type: string, message: string, duration?: number }) => {
    const id = `toast-${Date.now()}`
    const duration = options.duration || 3000
    
    const container = document.createElement('div')
    document.body.appendChild(container)
    
    const toastApp = createApp({
      setup() {
        return () => h(ToastComponent, {
          ...options,
          onClose: () => {
            closeToast(id)
          }
        })
      }
    })
    
    toastApp.mount(container)
    
    toastContainers.set(id, {
      instance: toastApp,
      container
    })
    
    // 自动关闭
    setTimeout(() => {
      closeToast(id)
    }, duration)
  }
  
  const closeToast = (id: string) => {
    const toast = toastContainers.get(id)
    if (toast) {
      toast.instance.unmount()
      document.body.removeChild(toast.container)
      toastContainers.delete(id)
    }
  }

  return {
    toast: {
      info: (message: string, duration?: number) => showToast({ type: 'info', message, duration }),
      success: (message: string, duration?: number) => showToast({ type: 'success', message, duration }),
      warning: (message: string, duration?: number) => showToast({ type: 'warning', message, duration }),
      error: (message: string, duration?: number) => showToast({ type: 'error', message, duration })
    }
  }
}