<template>
<div data-cy-mkw-digitalClock class="_monospace" :class="[$style.root, { _panel: !widgetProps.transparent }]" :style="{ fontSize: `${widgetProps.fontSize}em` }">
	<div v-if="widgetProps.showLabel" :class="$style.label">{{ tzAbbrev }}</div>
	<div>
		<MkDigitalClock :showMs="widgetProps.showMs" :offset="tzOffset"/>
	</div>
	<div v-if="widgetProps.showLabel" :class="$style.label">{{ tzOffsetLabel }}</div>
</div>
</template>

<script lang="ts" setup>
import { useWidgetPropsManager, Widget, WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget';
import { GetFormResultType } from '@/scripts/form';
import { timezones } from '@/scripts/timezones';
import MkDigitalClock from '@/components/MkDigitalClock.vue';

const name = 'digitalClock';

const widgetPropsDef = {
	transparent: {
		type: 'boolean' as const,
		default: false,
	},
	fontSize: {
		type: 'number' as const,
		default: 1.5,
		step: 0.1,
	},
	showMs: {
		type: 'boolean' as const,
		default: true,
	},
	showLabel: {
		type: 'boolean' as const,
		default: true,
	},
	timezone: {
		type: 'enum' as const,
		default: null,
		enum: [...timezones.map((tz) => ({
			label: tz.name,
			value: tz.name.toLowerCase(),
		})), {
			label: '(auto)',
			value: null,
		}],
	},
};

type WidgetProps = GetFormResultType<typeof widgetPropsDef>;

const props = defineProps<WidgetComponentProps<WidgetProps>>();
const emit = defineEmits<WidgetComponentEmits<WidgetProps>>();

const { widgetProps, configure } = useWidgetPropsManager(name,
	widgetPropsDef,
	props,
	emit,
);

const tzAbbrev = $computed(() => (widgetProps.timezone === null
	? timezones.find((tz) => tz.name.toLowerCase() === Intl.DateTimeFormat().resolvedOptions().timeZone.toLowerCase())?.abbrev
	: timezones.find((tz) => tz.name.toLowerCase() === widgetProps.timezone)?.abbrev) ?? '?');

const tzOffset = $computed(() => widgetProps.timezone === null
	? 0 - new Date().getTimezoneOffset()
	: timezones.find((tz) => tz.name.toLowerCase() === widgetProps.timezone)?.offset ?? 0);

const tzOffsetLabel = $computed(() => (tzOffset >= 0 ? '+' : '-') + Math.floor(tzOffset / 60).toString().padStart(2, '0') + ':' + (tzOffset % 60).toString().padStart(2, '0'));

defineExpose<WidgetComponentExpose>({
	name,
	configure,
	id: props.widget ? props.widget.id : null,
});
</script>

<style lang="scss" module>
.root {
	padding: 16px 0;
	text-align: center;
}

.label {
	font-size: 65%;
	opacity: 0.7;
}
</style>
