feat: EduEasy checkpoint - plan, scaffolding, pedagogia modules, components child+parent, API routes, Prisma schema, Docker infra, Better Auth

lib/speech.ts

@@ -0,0 +1,53 @@
+"use client"
+
+let speechSynth: SpeechSynthesis | null = null
+let voices: SpeechSynthesisVoice[] = []
+
+export function initSpeech(): void {
+  if (typeof window === "undefined") return
+  speechSynth = window.speechSynthesis
+
+  const loadVoices = () => {
+    voices = speechSynth!.getVoices().filter(
+      (v) => v.lang.startsWith("es") && v.lang.includes("ES") || v.lang.includes("MX")
+    )
+  }
+
+  loadVoices()
+  speechSynth.onvoiceschanged = loadVoices
+}
+
+export function speak(text: string, rate = 0.85): Promise<void> {
+  return new Promise((resolve) => {
+    if (!speechSynth) {
+      initSpeech()
+    }
+    if (!speechSynth || typeof window === "undefined") {
+      resolve()
+      return
+    }
+
+    window.speechSynthesis.cancel()
+
+    const utterance = new SpeechSynthesisUtterance(text)
+    utterance.lang = "es-ES"
+    utterance.rate = rate
+    utterance.pitch = 1.1
+
+    const spanishVoice = voices.length > 0 ? voices[0] : null
+    if (spanishVoice) {
+      utterance.voice = spanishVoice
+    }
+
+    utterance.onend = () => resolve()
+    utterance.onerror = () => resolve()
+
+    speechSynth.speak(utterance)
+  })
+}
+
+export function stopSpeaking(): void {
+  if (typeof window !== "undefined") {
+    window.speechSynthesis.cancel()
+  }
+}