<template>
	<transition :name="$store.state.animation ? 'fade' : ''" mode="out-in">
		<div v-if="pending">
			<MkLoading />
		</div>
		<div v-else-if="resolved">
			<slot :result="result"></slot>
		</div>
		<div v-else>
			<div class="wszdbhzo">
				<div>
					<i class="ph-warning ph-bold ph-lg"></i>
					{{ i18n.ts.somethingHappened }}
				</div>
				<MkButton inline class="retry" @click="retry"
					><i class="ph-arrow-clockwise ph-bold ph-lg"></i>
					{{ i18n.ts.retry }}</MkButton
				>
			</div>
		</div>
	</transition>
</template>

<script lang="ts">
import type { PropType } from "vue";
import { defineComponent, ref, watch } from "vue";
import MkButton from "@/components/MkButton.vue";
import { i18n } from "@/i18n";

export default defineComponent({
	components: {
		MkButton,
	},

	props: {
		p: {
			type: Function as PropType<() => Promise<any>>,
			required: true,
		},
	},

	setup(props, context) {
		const pending = ref(true);
		const resolved = ref(false);
		const rejected = ref(false);
		const result = ref(null);

		const process = () => {
			if (props.p == null) {
				return;
			}
			const promise = props.p();
			pending.value = true;
			resolved.value = false;
			rejected.value = false;
			promise.then((_result) => {
				pending.value = false;
				resolved.value = true;
				result.value = _result;
			});
			promise.catch(() => {
				pending.value = false;
				rejected.value = true;
			});
		};

		watch(
			() => props.p,
			() => {
				process();
			},
			{
				immediate: true,
			},
		);

		const retry = () => {
			process();
		};

		return {
			pending,
			resolved,
			rejected,
			result,
			retry,
			i18n,
		};
	},
});
</script>

<style lang="scss" scoped>
.fade-enter-active,
.fade-leave-active {
	transition: opacity 0.125s ease;
}
.fade-enter-from,
.fade-leave-to {
	opacity: 0;
}

.wszdbhzo {
	padding: 16px;
	text-align: center;

	> .retry {
		margin-top: 16px;
	}
}
</style>
