import Dict from './Dict'
import { mergeOptions } from './DictOptions'

/**
 * 业务字典插件（Vue3 版）。
 * 页面通过组件选项 `dicts: ['xxx']` 声明所需字典，插件用全局 mixin 注入 `this.dict`，
 * 供模板以 `dict.type.xxx` / `dict.label.xxx` 消费。
 */
export default function(app, options) {
  mergeOptions(options)
  app.mixin({
    data() {
      if (this.$options === undefined || this.$options.dicts === undefined || this.$options.dicts === null) {
        return {}
      }
      const dict = new Dict()
      dict.owner = this
      return {
        dict
      }
    },
    created() {
      if (!(this.dict instanceof Dict)) {
        return
      }
      options.onCreated && options.onCreated(this.dict)
      this.dict.init(this.$options.dicts).then(() => {
        options.onReady && options.onReady(this.dict)
        this.$nextTick(() => {
          this.$emit('dictReady', this.dict)
          if (this.$options.methods && this.$options.methods.onDictReady instanceof Function) {
            this.$options.methods.onDictReady.call(this, this.dict)
          }
        })
      })
    },
  })
}