up

2026-10-17 18:14:31 +07:00
parent 1c42ae2a75
commit 701bca234e
31 changed files with 9774 additions and 21 deletions
@@ -0,0 +1,87 @@
+import { performance } from 'node:perf_hooks'
+import type { Command, State } from '../src/types/screen.js'
+
+export function parseCommand(value: unknown): Command {
+  if (!value || typeof value !== 'object') throw new Error('Некорректная команда')
+  const c = value as Record<string, unknown>
+  if (
+    typeof c.id !== 'string' ||
+    !/^[a-zA-Z0-9-]{1,80}$/.test(c.id) ||
+    typeof c.action !== 'string' ||
+    !['play', 'pause', 'stop', 'seek'].includes(c.action) ||
+    typeof c.media !== 'string' ||
+    !['audio', 'video'].includes(c.media) ||
+    typeof c.position !== 'number' ||
+    !Number.isFinite(c.position) ||
+    c.position < 0 ||
+    c.position > 60
+  ) {
+    throw new Error('Некорректная команда')
+  }
+  return {
+    id: c.id,
+    action: c.action as Command['action'],
+    media: c.media as Command['media'],
+    position: c.position,
+  }
+}
+
+export class Controller {
+  state: State = { revision: 0, command: null, status: 'idle', error: '', samples: [] }
+  private seen = new Set<string>()
+  private startedAt = 0
+  private origin: 'computer' | 'phone' = 'computer'
+  constructor(private publish: (state: State) => void) {}
+  command(input: unknown, origin: 'computer' | 'phone' = 'computer') {
+    const command = parseCommand(input)
+    if (this.seen.has(command.id)) return
+    this.seen.add(command.id)
+    // shortcut: помним 4096 команд стенда; долговременная дедупликация — SCREEN-004.
+    if (this.seen.size > 4096) this.seen.delete(this.seen.values().next().value!)
+    this.startedAt = performance.now()
+    this.origin = origin
+    this.state = {
+      ...this.state,
+      revision: this.state.revision + 1,
+      command,
+      status: 'pending',
+      error: '',
+    }
+    this.publish(this.state)
+  }
+  report(input: unknown) {
+    if (!input || typeof input !== 'object') throw new Error('Некорректный отчёт')
+    const r = input as Record<string, unknown>
+    if (
+      typeof r.status !== 'string' ||
+      !['playing', 'paused', 'stopped', 'ended', 'error'].includes(r.status) ||
+      typeof r.id !== 'string' ||
+      (r.error !== undefined && typeof r.error !== 'string')
+    )
+      throw new Error('Некорректный отчёт')
+    if (
+      r.id !== this.state.command?.id ||
+      (this.state.status !== 'pending' && r.status !== 'ended' && r.status !== 'error')
+    )
+      return
+    const samples =
+      r.status === 'playing' && this.state.command.action === 'play'
+        ? [
+            ...this.state.samples.slice(-399),
+            {
+              media: this.state.command.media,
+              origin: this.origin,
+              milliseconds: performance.now() - this.startedAt,
+            },
+          ]
+        : this.state.samples
+    this.state = {
+      ...this.state,
+      revision: this.state.revision + 1,
+      status: r.status as State['status'],
+      error: String(r.error ?? '').slice(0, 500),
+      samples,
+    }
+    this.publish(this.state)
+  }
+}