<template>
  <div ref="divRef" :class="['tinyflow', className]" :style="style" style="height: 100%"> </div>
</template>

<script setup lang="ts">
import { Item, Tinyflow as TinyflowNative } from './ui'
import './ui/index.css'
import { onMounted, onUnmounted, ref } from 'vue'

const props = defineProps<{
  className?: string
  style?: Record<string, string>
  data?: Record<string, any>
  provider?: {
    llm?: () => Item[] | Promise<Item[]>
    knowledge?: () => Item[] | Promise<Item[]>
    internal?: () => Item[] | Promise<Item[]>
  }
}>()

const divRef = ref<HTMLDivElement | null>(null)
let tinyflow: TinyflowNative | null = null
// 定义默认的 provider 方法
const defaultProvider = {
  llm: () => [] as Item[],
  knowledge: () => [] as Item[],
  internal: () => [] as Item[]
}

onMounted(() => {
  if (divRef.value) {
    // 合并默认 provider 和传入的 props.provider
    const mergedProvider = {
      ...defaultProvider,
      ...props.provider
    }
    tinyflow = new TinyflowNative({
      element: divRef.value as Element,
      data: props.data || {},
      provider: mergedProvider
    })
  }
})

onUnmounted(() => {
  if (tinyflow) {
    tinyflow.destroy()
    tinyflow = null
  }
})

const getData = () => {
  if (tinyflow) {
    return tinyflow.getData()
  }
  console.warn('Tinyflow instance is not initialized')
  return null
}

defineExpose({
  getData
})
</script>