<template>
	<label :class="{ 'long-style': longStyle }" @drop.prevent="handleDrop" @dragover.prevent>
		<slot />
		{{ prompt }}
		<input
			type="file"
			:multiple="multiple"
			:accept="accept"
			:disabled="disabled"
			@change="handleChange"
		/>
	</label>
</template>

<script>
import { fileIsValid } from '@modrinth/utils'
import { defineComponent } from 'vue'

export default defineComponent({
	props: {
		prompt: {
			type: String,
			default: 'Select file',
		},
		multiple: {
			type: Boolean,
			default: false,
		},
		accept: {
			type: String,
			default: null,
		},
		/**
		 * The max file size in bytes
		 */
		maxSize: {
			type: Number,
			default: null,
		},
		showIcon: {
			type: Boolean,
			default: true,
		},
		shouldAlwaysReset: {
			type: Boolean,
			default: false,
		},
		longStyle: {
			type: Boolean,
			default: false,
		},
		disabled: {
			type: Boolean,
			default: false,
		},
	},
	emits: ['change'],
	data() {
		return {
			files: [],
		}
	},
	methods: {
		addFiles(files, shouldNotReset) {
			if (!shouldNotReset || this.shouldAlwaysReset) {
				this.files = files
			}
			const validationOptions = { maxSize: this.maxSize, alertOnInvalid: true }
			this.files = [...this.files].filter((file) => fileIsValid(file, validationOptions))
			if (this.files.length > 0) {
				this.$emit('change', this.files)
			}
		},
		handleDrop(e) {
			this.addFiles(e.dataTransfer.files)
		},
		handleChange(e) {
			this.addFiles(e.target.files)
		},
	},
})
</script>

<style lang="scss" scoped>
label {
	flex-direction: unset;
	max-height: unset;
	svg {
		height: 1rem;
	}
	input {
		display: none;
	}
	&.long-style {
		display: flex;
		padding: 1.5rem 2rem;
		justify-content: center;
		align-items: center;
		grid-gap: 0.5rem;
		background-color: var(--color-button-bg);
		border-radius: var(--radius-sm);
		border: dashed 0.3rem var(--color-contrast);
		cursor: pointer;
		color: var(--color-contrast);
	}
}
</style>
