<template>
	<Subtitle value="Consults" />
	<Subtitle :value="patient_info.name" />
	<div class="row">
		<div class="selector col-12" :class="{ 'col-xl-4': selection_text }">
			<div class="card mb-3 shadow">
				<div class="card-header">{{resultset.length > 0 ? resultset.length : 'No'}} record{{resultset.length == 1 ? '' : 's'}}</div>
				<ul class="scroller list-group list-group-flush" :class="{ 'list-skinny': selection_text }" ref="scroller">
					<router-link v-for="item in resultset" :to="'/patient/' + patient_dfn + '/consult/' + item.IEN" replace custom v-slot="{ navigate, href }">
						<li :key="item" class="record list-group-item" :class="{ 'active': selection == item.IEN }" :title="datetimestring(strptime_vista(item.time)) + ' #' + item.IEN + '\n(' + item.status + ') ' + item.text" @click="navigate">
							<div class="row">
								<div class="cell col-4"><router-link :to="href" replace>{{datestring(strptime_vista(item.time))}}</router-link></div>
								<div class="cell col-8">
									<template v-if="item.status == 'p'">⏳</template>
									<template v-else-if="item.status == 'a'">👍</template>
									<template v-else-if="item.status == 's'">📆</template>
									<template v-else-if="item.status == 'c'">✔</template>
									<template v-else-if="item.status == 'x'">❌</template>
									<template v-else-if="item.status == 'dc'">🗑</template>
									<template v-else>({{item.status}})</template>
									{{item.text}}
								</div>
							</div>
						</li>
					</router-link>
				</ul>
			</div>
		</div>
		<div v-if="selection_text" class="col-12 col-xl-8">
			<div class="card mb-3 shadow">
				<div class="card-header d-flex justify-content-between align-items-center">
					<span>{{doctitle(selection_text) || 'Consult'}} #{{selection}}</span>
					<router-link class="close" :to="'/patient/' + patient_dfn + '/consult'" replace>❌</router-link>
				</div>
				<div class="detail card-body" ref="detail">{{selection_text}}</div>
			</div>
		</div>
	</div>
</template>

<style scoped>
	div.selector {
		position: sticky;
		top: 1.15rem;
		z-index: 1;
	}
	ul.scroller.list-skinny {
		max-height: 25vh;
		overflow-y: auto;
	}
	li.record {
		cursor: default;
		border-top: 1px solid #dee2e6;
		padding: 0.25rem 0.75rem;
		scroll-margin-top: 3.6875rem;
	}
	li.record:nth-child(even) {
		background-color: rgba(0, 0, 0, 0.05);
	}
	ul.scroller.list-skinny li.record {
		scroll-margin-top: 0;
	}
	li.record a {
		color: inherit;
	}
	li.record.active {
		color: #fff;
		background-color: #0d6efd;
	}
	li.bottom {
		overflow-anchor: none;
	}
	div.cell {
		overflow: hidden;
		text-overflow: ellipsis;
		white-space: nowrap;
	}
	a.close {
		cursor: default;
		text-decoration: none;
	}
	div.detail {
		scroll-margin-top: calc(3.6875rem + 2.5625rem + 25vh);
		font-family: monospace;
		white-space: pre-wrap;
	}
	@media (min-width: 1200px) {
		div.selector {
			position: static;
		}
		ul.scroller.list-skinny {
			max-height: 75vh;
		}
		div.detail {
			max-height: 75vh;
			scroll-margin-top: 0;
			overflow-y: auto;
		}
	}
</style>

<script>
	import { debounce, strptime_vista } from './util.mjs';

	import Subtitle from './Subtitle.vue';

	const SZ_WINDOW = 100;

	export default {
		components: {
			Subtitle
		},
		props: {
			client: Object,
			sensitive: Boolean,
			patient_dfn: String,
			patient_info: Object
		},
		data() {
			return {
				dfn: null,
				has_more: '',
				is_loading: false,
				resultset: [],
				selection: null,
				selection_text: null
			};
		},
		watch: {
			'$route.params.ien': {
				async handler(value) {
					this.selection = value;
				}, immediate: true
			}
		},
		methods: {
			strptime_vista,
			datestring(date) {
				return date.toLocaleDateString('sv-SE');
			},
			datetimestring(date) {
				return date.toLocaleDateString('sv-SE') + ' ' + date.toLocaleTimeString('en-GB');
			},
			doctitle(doc) {
				if(doc) {
					var m = doc.match(/^Orderable Item:\s*(.*)$/m);
					if(m) return m[1];
				}
			}
		},
		created() {
			this.$watch(
				() => (this.client, this.patient_dfn, {}),
				debounce(async () => {
					if((this.client) && (this.patient_dfn)) this.resultset = await this.client.ORQQCN_LIST(this.patient_dfn);
					else this.resultset = [];
				}, 500),
				{ immediate: true }
			);
			this.$watch(
				() => (this.client, this.selection, {}),
				async function() {
					try {
						this.selection_text = (this.client) && (this.selection) ? await this.client.ORQQCN_DETAIL(this.selection) : null;
					} catch(ex) {
						this.selection_text = null;
						console.warn(ex);
					}
					if(this.$refs.scroller) {
						if(this.selection_text) {	// scroll to selected item
							await this.$nextTick();
							var active = this.$refs.scroller.querySelectorAll(':scope > .active');
							if(active.length > 0) (Element.prototype.scrollIntoViewIfNeeded || Element.prototype.scrollIntoView).call(active[0]);
							if(this.$refs.detail) {	// scroll to top of detail panel
								this.$refs.detail.scrollIntoView();
								this.$refs.detail.scrollTop = 0;
							}
						} else { // scroll to topmost item
							var offset = this.$refs.scroller.getBoundingClientRect().top;
							for(var children = this.$refs.scroller.children, count = children.length, i = 0; i < count; ++i) if(children[i].getBoundingClientRect().top >= offset) {
								await this.$nextTick();
								var behavior = document.documentElement.style.scrollBehavior;
								document.documentElement.style.scrollBehavior = 'auto';	// inhibit Bootstrap smooth scrolling
								children[i].scrollIntoView();
								document.documentElement.style.scrollBehavior = behavior;
								break;
							}
						}
					}
				},
				{ immediate: true }
			);
		}
	};
</script>
