/**
 * 渲染适配 - 处理事件分发和 actiontype
 */
const app = getApp()

class BricksRenderer {
  constructor(page) {
    this.page = page
    this.widgetTree = null
  }

  /**
   * 渲染 widget 树
   */
  render(widgetTree) {
    this.widgetTree = widgetTree
    this.page.setData({
      tree: widgetTree,
      treeData: [widgetTree] // WXML 需要数组形式
    })
  }

  /**
   * 处理事件绑定
   */
  onEvent(e) {
    const bind = e.currentTarget.dataset.bind || e.detail || {}
    const { actiontype, target, methodname, url, script } = bind.actiontype ? bind : e.currentTarget.dataset
    console.log('[Bricks] Event:', actiontype, target)

    switch (actiontype) {
      case 'urlwidget':
        this._handleUrlWidget(url)
        break
      case 'method':
        this._handleMethod(methodname, e)
        break
      case 'script':
        this._handleScript(script)
        break
      case 'event':
        this._handleEvent(e)
        break
      default:
        console.log('[Bricks] Unknown actiontype:', actiontype)
    }
  }

  _handleUrlWidget(url) {
    if (!url) return
    wx.navigateTo({ url: '/pages/bricks/bricks?url=' + encodeURIComponent(url) })
  }

  _handleMethod(methodname, e) {
    if (methodname && this.page[methodname]) {
      this.page[methodname](e)
    }
  }

  _handleScript(script) {
    console.log('[Bricks] Script:', script)
  }

  _handleEvent(e) {
    console.log('[Bricks] Event data:', e.detail)
  }

  onInput(e) {
    const bind = e.currentTarget.dataset.bind || {}
    if (bind.actiontype) {
      this.onEvent({ currentTarget: { dataset: { bind } }, detail: e.detail })
    }
  }
}

module.exports = { BricksRenderer }