<template>
<div>
	<MkFolder>
		<template #header><Fa :icon="faHeartbeat"/> {{ $ts.metrics }}</template>
		<div class="_section" style="padding: 0 var(--margin);">
			<div class="_content">
				<MkContainer :body-togglable="false" class="_vMargin">
					<template #header><Fa :icon="faMicrochip"/>{{ $ts.cpuAndMemory }}</template>
					<!--
					<template #func>
						<button class="_button" @click="resume" :disabled="!paused"><Fa :icon="faPlay"/></button>
						<button class="_button" @click="pause" :disabled="paused"><Fa :icon="faPause"/></button>
					</template>
					-->

					<div class="_content" style="margin-top: -8px; margin-bottom: -12px;">
						<canvas :ref="cpumem"></canvas>
					</div>
					<div class="_content" v-if="serverInfo">
						<div class="_table">
							<div class="_row">
								<div class="_cell"><div class="_label">MEM total</div>{{ bytes(serverInfo.mem.total) }}</div>
								<div class="_cell"><div class="_label">MEM used</div>{{ bytes(memUsage) }} ({{ (memUsage / serverInfo.mem.total * 100).toFixed(0) }}%)</div>
								<div class="_cell"><div class="_label">MEM free</div>{{ bytes(serverInfo.mem.total - memUsage) }} ({{ ((serverInfo.mem.total - memUsage) / serverInfo.mem.total * 100).toFixed(0) }}%)</div>
							</div>
						</div>
					</div>
				</MkContainer>

				<MkContainer :body-togglable="false" class="_vMargin">
					<template #header><Fa :icon="faHdd"/> {{ $ts.disk }}</template>
					<!--
					<template #func>
						<button class="_button" @click="resume" :disabled="!paused"><Fa :icon="faPlay"/></button>
						<button class="_button" @click="pause" :disabled="paused"><Fa :icon="faPause"/></button>
					</template>
					-->

					<div class="_content" style="margin-top: -8px; margin-bottom: -12px;">
						<canvas :ref="disk"></canvas>
					</div>
					<div class="_content" v-if="serverInfo">
						<div class="_table">
							<div class="_row">
								<div class="_cell"><div class="_label">Disk total</div>{{ bytes(serverInfo.fs.total) }}</div>
								<div class="_cell"><div class="_label">Disk used</div>{{ bytes(serverInfo.fs.used) }} ({{ (serverInfo.fs.used / serverInfo.fs.total * 100).toFixed(0) }}%)</div>
								<div class="_cell"><div class="_label">Disk free</div>{{ bytes(serverInfo.fs.total - serverInfo.fs.used) }} ({{ ((serverInfo.fs.total - serverInfo.fs.used) / serverInfo.fs.total * 100).toFixed(0) }}%)</div>
							</div>
						</div>
					</div>
				</MkContainer>

				<MkContainer :body-togglable="false" class="_vMargin">
					<template #header><Fa :icon="faExchangeAlt"/> {{ $ts.network }}</template>
					<!--
					<template #func>
						<button class="_button" @click="resume" :disabled="!paused"><Fa :icon="faPlay"/></button>
						<button class="_button" @click="pause" :disabled="paused"><Fa :icon="faPause"/></button>
					</template>
					-->

					<div class="_content" style="margin-top: -8px; margin-bottom: -12px;">
						<canvas :ref="net"></canvas>
					</div>
					<div class="_content" v-if="serverInfo">
						<div class="_table">
							<div class="_row">
								<div class="_cell"><div class="_label">Interface</div>{{ serverInfo.net.interface }}</div>
							</div>
						</div>
					</div>
				</MkContainer>
			</div>
		</div>
	</MkFolder>

	<MkFolder>
		<template #header><Fa :icon="faClipboardList"/> {{ $ts.jobQueue }}</template>

		<div class="vkyrmkwb" :style="{ gridTemplateRows: queueHeight }">
			<MkContainer :body-togglable="false" :scrollable="true" :resize-base-el="() => $el">
				<template #header><Fa :icon="faExclamationTriangle"/> {{ $ts.delayed }}</template>

				<div class="_content">
					<div class="_keyValue" v-for="job in jobs" :key="job[0]">
						<button class="_button" @click="showInstanceInfo(job[0])">{{ job[0] }}</button>
						<div style="text-align: right;">{{ number(job[1]) }} jobs</div>
					</div>
				</div>
			</MkContainer>
			<XQueue :connection="queueConnection" domain="inbox" ref="queue" class="queue">
				<template #title><Fa :icon="faExchangeAlt"/> In</template>
			</XQueue>
			<XQueue :connection="queueConnection" domain="deliver" class="queue">
				<template #title><Fa :icon="faExchangeAlt"/> Out</template>
			</XQueue>
		</div>
	</MkFolder>
</div>
</template>

<script lang="ts">
import { defineComponent, markRaw } from 'vue';
import { faPlay, faPause, faDatabase, faServer, faExchangeAlt, faMicrochip, faHdd, faStream, faTrashAlt, faInfoCircle, faExclamationTriangle, faTachometerAlt, faHeartbeat, faClipboardList } from '@fortawesome/free-solid-svg-icons';
import Chart from 'chart.js';
import MkButton from '@/components/ui/button.vue';
import MkSelect from '@/components/ui/select.vue';
import MkInput from '@/components/ui/input.vue';
import MkContainer from '@/components/ui/container.vue';
import MkFolder from '@/components/ui/folder.vue';
import MkwFederation from '../../widgets/federation.vue';
import { version, url } from '@/config';
import bytes from '../../filters/bytes';
import number from '../../filters/number';
import MkInstanceInfo from './instance.vue';

const alpha = (hex, a) => {
	const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex)!;
	const r = parseInt(result[1], 16);
	const g = parseInt(result[2], 16);
	const b = parseInt(result[3], 16);
	return `rgba(${r}, ${g}, ${b}, ${a})`;
};
import * as os from '@/os';

export default defineComponent({
	components: {
		MkButton,
		MkSelect,
		MkInput,
		MkContainer,
		MkFolder,
		MkwFederation,
	},

	data() {
		return {
			version,
			url,
			stats: null,
			serverInfo: null,
			connection: null,
			queueConnection: os.stream.useSharedConnection('queueStats'),
			memUsage: 0,
			chartCpuMem: null,
			chartNet: null,
			jobs: [],
			logs: [],
			logLevel: 'all',
			logDomain: '',
			modLogs: [],
			dbInfo: null,
			overviewHeight: '1fr',
			queueHeight: '1fr',
			paused: false,
			faPlay, faPause, faDatabase, faServer, faExchangeAlt, faMicrochip, faHdd, faStream, faTrashAlt, faInfoCircle, faExclamationTriangle, faTachometerAlt, faHeartbeat, faClipboardList,
		}
	},

	computed: {
		gridColor() {
			// TODO: var(--panel)の色が暗いか明るいかで判定する
			return this.$store.state.darkMode ? 'rgba(255, 255, 255, 0.1)' : 'rgba(0, 0, 0, 0.1)';
		},
	},

	mounted() {
		this.fetchJobs();

		Chart.defaults.global.defaultFontColor = getComputedStyle(document.documentElement).getPropertyValue('--fg');

		os.api('admin/server-info', {}).then(res => {
			this.serverInfo = res;

			this.connection = os.stream.useSharedConnection('serverStats');
			this.connection.on('stats', this.onStats);
			this.connection.on('statsLog', this.onStatsLog);
			this.connection.send('requestLog', {
				id: Math.random().toString().substr(2, 8),
				length: 150
			});

			this.$nextTick(() => {
				this.queueConnection.send('requestLog', {
					id: Math.random().toString().substr(2, 8),
					length: 200
				});
			});
		});
	},

	beforeUnmount() {
		this.connection.off('stats', this.onStats);
		this.connection.off('statsLog', this.onStatsLog);
		this.connection.dispose();
		this.queueConnection.dispose();
	},

	methods: {
		cpumem(el) {
			if (this.chartCpuMem != null) return;
			this.chartCpuMem = markRaw(new Chart(el, {
				type: 'line',
				data: {
					labels: [],
					datasets: [{
						label: 'CPU',
						pointRadius: 0,
						lineTension: 0,
						borderWidth: 2,
						borderColor: '#86b300',
						backgroundColor: alpha('#86b300', 0.1),
						data: []
					}, {
						label: 'MEM (active)',
						pointRadius: 0,
						lineTension: 0,
						borderWidth: 2,
						borderColor: '#935dbf',
						backgroundColor: alpha('#935dbf', 0.02),
						data: []
					}, {
						label: 'MEM (used)',
						pointRadius: 0,
						lineTension: 0,
						borderWidth: 2,
						borderColor: '#935dbf',
						borderDash: [5, 5],
						fill: false,
						data: []
					}]
				},
				options: {
					aspectRatio: 3,
					layout: {
						padding: {
							left: 0,
							right: 0,
							top: 8,
							bottom: 0
						}
					},
					legend: {
						position: 'bottom',
						labels: {
							boxWidth: 16,
						}
					},
					scales: {
						xAxes: [{
							gridLines: {
								display: false,
								color: this.gridColor,
								zeroLineColor: this.gridColor,
							},
							ticks: {
								display: false,
							}
						}],
						yAxes: [{
							position: 'right',
							gridLines: {
								display: true,
								color: this.gridColor,
								zeroLineColor: this.gridColor,
							},
							ticks: {
								display: false,
								max: 100
							}
						}]
					},
					tooltips: {
						intersect: false,
						mode: 'index',
					}
				}
			}));
		},

		net(el) {
			if (this.chartNet != null) return;
			this.chartNet = markRaw(new Chart(el, {
				type: 'line',
				data: {
					labels: [],
					datasets: [{
						label: 'In',
						pointRadius: 0,
						lineTension: 0,
						borderWidth: 2,
						borderColor: '#94a029',
						backgroundColor: alpha('#94a029', 0.1),
						data: []
					}, {
						label: 'Out',
						pointRadius: 0,
						lineTension: 0,
						borderWidth: 2,
						borderColor: '#ff9156',
						backgroundColor: alpha('#ff9156', 0.1),
						data: []
					}]
				},
				options: {
					aspectRatio: 3,
					layout: {
						padding: {
							left: 0,
							right: 0,
							top: 8,
							bottom: 0
						}
					},
					legend: {
						position: 'bottom',
						labels: {
							boxWidth: 16,
						}
					},
					scales: {
						xAxes: [{
							gridLines: {
								display: false,
								color: this.gridColor,
								zeroLineColor: this.gridColor,
							},
							ticks: {
								display: false
							}
						}],
						yAxes: [{
							position: 'right',
							gridLines: {
								display: true,
								color: this.gridColor,
								zeroLineColor: this.gridColor,
							},
							ticks: {
								display: false,
							}
						}]
					},
					tooltips: {
						intersect: false,
						mode: 'index',
					}
				}
			}));
		},

		disk(el) {
			if (this.chartDisk != null) return;
			this.chartDisk = markRaw(new Chart(el, {
				type: 'line',
				data: {
					labels: [],
					datasets: [{
						label: 'Read',
						pointRadius: 0,
						lineTension: 0,
						borderWidth: 2,
						borderColor: '#94a029',
						backgroundColor: alpha('#94a029', 0.1),
						data: []
					}, {
						label: 'Write',
						pointRadius: 0,
						lineTension: 0,
						borderWidth: 2,
						borderColor: '#ff9156',
						backgroundColor: alpha('#ff9156', 0.1),
						data: []
					}]
				},
				options: {
					aspectRatio: 3,
					layout: {
						padding: {
							left: 0,
							right: 0,
							top: 8,
							bottom: 0
						}
					},
					legend: {
						position: 'bottom',
						labels: {
							boxWidth: 16,
						}
					},
					scales: {
						xAxes: [{
							gridLines: {
								display: false,
								color: this.gridColor,
								zeroLineColor: this.gridColor,
							},
							ticks: {
								display: false
							}
						}],
						yAxes: [{
							position: 'right',
							gridLines: {
								display: true,
								color: this.gridColor,
								zeroLineColor: this.gridColor,
							},
							ticks: {
								display: false,
							}
						}]
					},
					tooltips: {
						intersect: false,
						mode: 'index',
					}
				}
			}));
		},

		async showInstanceInfo(q) {
			let instance = q;
			if (typeof q === 'string') {
				instance = await os.api('federation/show-instance', {
					host: q
				});
			}
			os.popup(MkInstanceInfo, {
				instance: instance
			}, {}, 'closed');
		},

		fetchJobs() {
			os.api('admin/queue/deliver-delayed', {}).then(jobs => {
				this.jobs = jobs;
			});
		},

		onStats(stats) {
			if (this.paused) return;

			const cpu = (stats.cpu * 100).toFixed(0);
			const memActive = (stats.mem.active / this.serverInfo.mem.total * 100).toFixed(0);
			const memUsed = (stats.mem.used / this.serverInfo.mem.total * 100).toFixed(0);
			this.memUsage = stats.mem.active;

			this.chartCpuMem.data.labels.push('');
			this.chartCpuMem.data.datasets[0].data.push(cpu);
			this.chartCpuMem.data.datasets[1].data.push(memActive);
			this.chartCpuMem.data.datasets[2].data.push(memUsed);
			this.chartNet.data.labels.push('');
			this.chartNet.data.datasets[0].data.push(stats.net.rx);
			this.chartNet.data.datasets[1].data.push(stats.net.tx);
			this.chartDisk.data.labels.push('');
			this.chartDisk.data.datasets[0].data.push(stats.fs.r);
			this.chartDisk.data.datasets[1].data.push(stats.fs.w);
			if (this.chartCpuMem.data.datasets[0].data.length > 150) {
				this.chartCpuMem.data.labels.shift();
				this.chartCpuMem.data.datasets[0].data.shift();
				this.chartCpuMem.data.datasets[1].data.shift();
				this.chartCpuMem.data.datasets[2].data.shift();
				this.chartNet.data.labels.shift();
				this.chartNet.data.datasets[0].data.shift();
				this.chartNet.data.datasets[1].data.shift();
				this.chartDisk.data.labels.shift();
				this.chartDisk.data.datasets[0].data.shift();
				this.chartDisk.data.datasets[1].data.shift();
			}
			this.chartCpuMem.update();
			this.chartNet.update();
			this.chartDisk.update();
		},

		onStatsLog(statsLog) {
			for (const stats of [...statsLog].reverse()) {
				this.onStats(stats);
			}
		},

		bytes,

		number,

		pause() {
			this.paused = true;
		},

		resume() {
			this.paused = false;
		},
	}
});
</script>

<style lang="scss" scoped>
.xhexznfu {
	&.min-width_1000px {
		.sboqnrfi {
			display: grid;
			grid-template-columns: 3.2fr 1fr;
			grid-template-rows: 1fr;
			gap: 16px 16px;

			> .stats {
				height: min-content;
			}

			> .column {
				display: flex;
				flex-direction: column;

				> .info {
					flex-shrink: 0;
					flex-grow: 0;
				}

				> .db {
					flex: 1;
					flex-grow: 0;
					height: 100%;
				}

				> .fed {
					flex: 1;
					flex-grow: 0;
					height: 100%;
				}

				> *:not(:last-child) {
					margin-bottom: var(--margin);
				}
			}
		}

		.segusily {
			display: grid;
			grid-template-columns: 1fr 1fr 1fr;
			grid-template-rows: 1fr;
			gap: 16px 16px;
			padding: 0 16px;
		}

		.vkyrmkwb {
			display: grid;
			grid-template-columns: 0.5fr 1fr 1fr;
			grid-template-rows: 1fr;
			gap: 16px 16px;
			margin-bottom: var(--margin);

			> .queue {
				height: min-content;
			}

			> * {
				margin-bottom: 0;
			}
		}

		.uwuemslx {
			display: grid;
			grid-template-columns: 2fr 3fr;
			grid-template-rows: 1fr;
			gap: 16px 16px;
			height: 400px;
		}
	}

	.vkyrmkwb {
		> * {
			margin-bottom: var(--margin);
		}
	}
}
</style>
