import * as vscode from 'vscode'
import { tc } from '../helpers/TsComplier'
import { Dict } from '../type'
import { utils } from '../utils'

export class SubviewAttrHover {
  public async getHover(word: string, compName: string): Promise<vscode.Hover | null> {
    const propsDesp = await tc.getPropsDespByCompName(compName)
    if (propsDesp) {
      const must = propsDesp[word]
      if (must) {
        return this.getHoverMessage(word, must, 'property')
      }
      const choosable = propsDesp[`${word}?`]
      if (choosable) {
        return this.getHoverMessage(`${word}?`, choosable, 'property')
      }
    }
    const eventsDesp = await tc.getEventsTypeDespByCompName(compName)
    if (eventsDesp) {
      const must = eventsDesp[word]
      if (must) {
        return this.getHoverMessage(word, must, 'event')
      }
      const choosable = eventsDesp[`${word}?`]
      if (choosable) {
        return this.getHoverMessage(`${word}?`, choosable, 'event')
      }
    }
    return null
  }

  private getHoverMessage(name: string, desp: Dict | string, type?: 'property' | 'event') {
    const mdStr = new vscode.MarkdownString()
    const prefix = `(${type})`
    const details = utils.marshalIndent(desp)
    mdStr.appendCodeblock(`${prefix} ${name} : ${details}`, 'typescript')
    return new vscode.Hover(mdStr)
  }
}