import { App, ComponentPropsOptions, createVNode, Plugin, render } from 'vue'

import Loading from './Loading.vue'

import { VueInstance } from '../../utils/config'
import { merge } from '../../utils/helpers'
import { registerComponent, registerComponentProgrammatic } from '../../utils/plugins'
import InstanceRegistry from "../../utils/InstanceRegistry"

let localVueInstance: App

let instances = new InstanceRegistry()

const LoadingProgrammatic = {
    open(params: Readonly<ComponentPropsOptions>) : InstanceType<typeof Loading> {
        const defaultParam = {
            programmatic: { instances }
        }
        const propsData = merge(defaultParam, params)
        propsData.promise = new Promise((p1, p2) => {
            propsData.programmatic.resolve = p1
            propsData.programmatic.reject = p2
        })
        const app = localVueInstance || VueInstance
        const vnode = createVNode(Loading, propsData)
        vnode.appContext = app._context
        render(vnode, document.createElement('div'))
        return vnode.component.proxy as InstanceType<typeof Loading>
    },
    closeAll() {
        instances.walk((entry) => {
            entry.close(...arguments)
        })
    }
}

export default {
    install(app: App) {
        localVueInstance = app
        registerComponent(app, Loading)
        registerComponentProgrammatic(app, 'loading', LoadingProgrammatic)
    }
} as Plugin

export {
    LoadingProgrammatic,
    Loading as OLoading
}