| 1 | import type { SlidevProject } from '../projects' |
| 2 | import { createControlledPromise } from '@antfu/utils' |
| 3 | import { getPort as getPortPlease } from 'get-port-please' |
| 4 | import { computed, defineService, onScopeDispose, reactive, watch } from 'reactive-vscode' |
| 5 | import { config } from '../configs' |
| 6 | import { activeProject, askAddProject, projects, scannedProjects } from '../projects' |
| 7 | import { isSamePath } from '../utils/isSamePath' |
| 8 | import { logger } from '../views/logger' |
| 9 | |
| 10 | const versionRE = /<meta (?:name|property)="slidev:version" content="([^"]+)">/ |
| 11 | const entryRE = /<meta (?:property|charset)="slidev:entry" content="([^"]+)">/ |
| 12 | const RE_SLIDEV = /slidev/i |
| 13 | |
| 14 | export interface DetectedServerState { |
| 15 | port: number |
| 16 | ready: boolean |
| 17 | message: string |
| 18 | compatMode: boolean |
| 19 | entry: string | null |
| 20 | pending: Promise<boolean> | null |
| 21 | } |
| 22 | |
| 23 | export const useServerDetector = defineService(() => { |
| 24 | const detectedPorts = reactive(new Map<number, DetectedServerState>()) |
| 25 | |
| 26 | async function redetect(port: number) { |
| 27 | const state = detectedPorts.get(port) || reactive<DetectedServerState>({ |
| 28 | port, |
| 29 | ready: false, |
| 30 | message: '', |
| 31 | compatMode: false, |
| 32 | entry: null, |
| 33 | pending: null, |
| 34 | }) |
| 35 | detectedPorts.set(port, state) |
| 36 | |
| 37 | if (state.pending) |
| 38 | return state.pending |
| 39 | const { resolve } = state.pending = createControlledPromise() |
| 40 | |
| 41 | async function pingUrl(url: string) { |
| 42 | try { |
| 43 | const text = await (await fetch(url)).text() |
| 44 | if (!RE_SLIDEV.test(text)) |
| 45 | return false |
| 46 | // Use verkit to compare in the future |
| 47 | state.compatMode = !text.match(versionRE) |
| 48 | const detectedEntry = text.match(entryRE)?.[1] |
| 49 | if (detectedEntry) { |
| 50 | const entry = [...projects.keys()] |
| 51 | .find(projectEntry => isSamePath(projectEntry, detectedEntry)) ?? detectedEntry |
| 52 | state.entry = entry |
| 53 | logger.info(`[Slidev] Detected Slidev server entry: ${detectedEntry} on port ${port}`) |
| 54 | if (scannedProjects.value) { |
| 55 | askAddProject(entry, `A Slidev server is detected running on localhost:${port}.`) |
| 56 | } |
| 57 | } |
| 58 | return true |
| 59 | } |
| 60 | catch (err) { |
| 61 | state.message = String(err) |
| 62 | } |
| 63 | return false |
| 64 | } |
| 65 | |
| 66 | // We can't use `localhost:` here |
| 67 | state.ready = await pingUrl(`http://[::1]:${port}`) || await pingUrl(`http://127.0.0.1:${port}`) |
| 68 | |
| 69 | state.pending = null |
| 70 | resolve(state.ready) |
| 71 | return state.ready |
| 72 | } |
| 73 | |
| 74 | const portsToDetect = computed(() => { |
| 75 | const ports = new Set([config.port]) |
| 76 | for (const project of projects.values()) { |
| 77 | if (project.port.value) |
| 78 | ports.add(project.port.value) |
| 79 | } |
| 80 | return ports |
| 81 | }) |
| 82 | |
| 83 | watch(portsToDetect, (ports, oldPorts) => { |
| 84 | for (const port of ports) { |
| 85 | if (!oldPorts?.has(port)) |
| 86 | redetect(port) |
| 87 | } |
| 88 | }, { immediate: true }) |
| 89 | |
| 90 | const interval = setInterval(() => { |
| 91 | const activePort = activeProject.value?.port.value |
| 92 | if (activePort) { |
| 93 | redetect(activePort) |
| 94 | } |
| 95 | }, 4000) |
| 96 | onScopeDispose(() => clearInterval(interval)) |
| 97 | |
| 98 | function getDetected(project: SlidevProject) { |
| 99 | const port = project.port.value || config.port |
| 100 | const detected = detectedPorts.get(port) |
| 101 | if (detected?.entry === project.entry) |
| 102 | return detected |
| 103 | for (const state of detectedPorts.values()) { |
| 104 | if (state.entry === project.entry) |
| 105 | return state |
| 106 | } |
| 107 | return null |
| 108 | } |
| 109 | |
| 110 | async function allocPort() { |
| 111 | const usedPorts = [...projects.values()].map(project => project.port.value ?? 0) |
| 112 | const minPort = Math.max(3029, ...usedPorts) + 1 |
| 113 | return await getPortPlease({ |
| 114 | portRange: [minPort, 4000], |
| 115 | }) |
| 116 | } |
| 117 | |
| 118 | return { |
| 119 | redetect, |
| 120 | getDetected, |
| 121 | allocPort, |
| 122 | } |
| 123 | }) |
| 124 |