import { Completion } from './Completion'
import * as vscode from 'vscode'
import { tc } from '../helpers/TsComplier'
import { completionRefreshDelay } from '../readConfig'
import { utils } from '../utils'

export class SubviewPropsCompletion extends Completion {
  public completionArr: vscode.CompletionItem[] = []
  private timerCache: number = 0
  private compName!: string
  public validateType: 'comp' | 'other' | undefined

  public validateContext(document: vscode.TextDocument, position: vscode.Position): boolean {
    const res = tc.validateTagRange(document, position)
    if (res && res.type === 'comp') {
      this.compName = res.name
      this.validateType = 'comp'
      return true
    } else if (res && res.type === 'other') {
      this.validateType = 'other'
      return true
    }
    this.validateType = undefined
    return false
  }

  protected getCompletionItem(label: string, desp: string): vscode.CompletionItem {
    const compleItem = new vscode.CompletionItem(label)
    compleItem.kind = vscode.CompletionItemKind.Field
    compleItem.documentation = `propsType.${label}`
    compleItem.detail = desp
    label = utils.initLabel(label)
    compleItem.insertText = desp === 'boolean' ? label : new vscode.SnippetString(`${label}="\${1}"`)
    return compleItem
  }

  /**
   * 获取子视图props补全数组,复用缓存中的PropsDesp
   */
  public async getCompletionArr() {
    if (this.compName) {
      const now = Date.now()
      if (now - this.timerCache > completionRefreshDelay) {
        const compName = this.compName
        if (!compName) return []
        this.timerCache = now
        const desp = await tc.getPropsDespByCompName(compName)
        if (desp) {
          this.completionArr = Object.keys(desp).map((key) => {
            return this.getCompletionItem(key, utils.marshalIndent(desp[key]))
          })
          return this.completionArr
        }
      } else {
        return this.completionArr
      }
    }
  }
}