<template>
    <TransitionGroup name="list" tag="div">


        <div key="dropmenu" v-if="show"
            class="select-none text-slate-50 absolute top-0 left-0 right-0 bottom-0 flex flex-col  items-center justify-center bg-black bg-opacity-50 duration-200 backdrop-blur-sm "
            @dragleave.prevent="panelLeave($event)" @drop.stop.prevent="panelDrop($event)">
            <div class="flex flex-col  items-center justify-center p-8 rounded-lg shadow-lg border-dashed border-4 border-secondary w-4/5 h-4/5 "
                :class="dropRelease ? '' : 'pointer-events-none'">


                <div class="text-4xl text-center">
                    <slot>

                        Drop your files here
                        <!-- <div v-if="fileList.length == 0">
                        Drop your files here
                    </div> -->
                    </slot>
                    <!-- <div v-if="fileList.length > 0" class="flex flex-row gap-2 items-center">
                        <i data-feather="file" class="w-12 h-12"></i>
                        Files to upload
                        ({{ fileList.length }})
                    </div> -->
                </div>

                <!-- DISABLED UNTIL FURTHER NOTICE -->
                <!-- <div class=" overflow-auto no-scrollbar">

                    <TransitionGroup name="list" tag="div" class="flex flex-col items-center p-2">
                        <div v-for="file in fileList" :key="file.name">
                            <div class="relative m-1 cursor-pointer">

                                <span
                                    class="inline-flex items-center px-2 py-1 mr-2 text-sm font-medium bg-bg-dark-tone-panel rounded-lg hover:bg-primary-light ">
                                    <i data-feather="file" class="w-5 h-5 mr-1"></i>
                                    {{ file.name }}
                                    ({{ computedFileSize(file.size) }})
                                    <button type="button" title="Remove item"
                                        class="inline-flex items-center p-0.5 ml-2 text-sm rounded-sm hover:text-red-600 active:scale-75"
                                        @click="removeItem(file)">
                                        <i data-feather="x" class="w-5 h-5 "></i>

                                    </button>
                                </span>


                            </div>
                        </div>
                    </TransitionGroup>
                </div> -->

            </div>
        </div>
    </TransitionGroup>
</template>

<script>
import filesize from '../plugins/filesize'
import feather from 'feather-icons'
import { nextTick, TransitionGroup } from 'vue'
export default {
    setup() {


        return {}
    },
    name: 'DragDrop',
    emits: ['panelLeave', 'panelDrop'],

    data() {
        return {
            fileList: [],
            show: false,
            dropRelease: false
        }
    },
    mounted() {
        nextTick(() => {
            feather.replace()

        })
    },
    methods: {
        // computedFileSize(size) {
        //     return filesize(size)
        // },
        // removeItem(file) {
        //     this.fileList = this.fileList.filter((item) => item != file)
        //     // console.log(this.fileList)
        // },
        async panelDrop(event) {


            const supportsFileSystemAccessAPI =
                'getAsFileSystemHandle' in DataTransferItem.prototype;
            const supportsWebkitGetAsEntry =
                'webkitGetAsEntry' in DataTransferItem.prototype;


            if (!supportsFileSystemAccessAPI && !supportsWebkitGetAsEntry) {
                // Cannot handle directories.
                return;
            }
            const fileHandlesPromises = [...event.dataTransfer.items]
                // …by including only files (where file misleadingly means actual file _or_
                // directory)…
                .filter((item) => item.kind === 'file')
                // …and, depending on previous feature detection…
                .map((item) =>
                    supportsFileSystemAccessAPI
                        // …either get a modern `FileSystemHandle`…
                        ? item.getAsFileSystemHandle()
                        // …or a classic `FileSystemFileEntry`.
                        : item.webkitGetAsEntry(),
                );
           

            let dirList =[]
             // Loop over the array of promises.
            for await (const handle of fileHandlesPromises) {
                // This is where we can actually exclusively act on the directories.
                

                if (handle.kind === 'directory' || handle.isDirectory) {
                    

                    dirList.push(handle.name)
                }
            }








            this.dropRelease = true
            if (event.dataTransfer.files.length > 0) {
                [...event.dataTransfer.files].forEach(element => {
                    
                    if(!dirList.includes(element.name)){
                        this.fileList.push(element)

                    }
                });
            }

            nextTick(() => {
                feather.replace()
            })
            this.$emit('panelDrop', this.fileList)
            this.fileList = []
            this.show = false

        },
        panelLeave() {
            this.$emit('panelLeave')
            console.log('exit/leave')
            this.dropRelease = false
            this.show = false
            nextTick(() => {
                feather.replace()

            })
        }

    },
}
</script>

<style>
.list-move,
/* apply transition to moving elements */
.list-enter-active,
.list-leave-active {
    transition: all 0.5s ease;
}

.list-enter-from,
.list-leave-to {
    opacity: 0;

}

/* ensure leaving items are taken out of layout flow so that moving
   animations can be calculated correctly. */
.list-leave-active {
    position: absolute;
}
</style>