Initial commit: PodcastYes — AI podcast platform

2026-06-07 03:58:32 -04:00
commit 155507f21a
151 changed files with 19826 additions and 0 deletions
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+import type { EpisodeConfig, StructuredScript } from "../types";
+
+const FORMAT_GUIDANCE: Record<EpisodeConfig["format"], string> = {
+  SOLO: "A single host speaking directly to the listener. Use only the host speaker.",
+  INTERVIEW:
+    "A host interviewing a guest. Alternate naturally between host questions and guest answers.",
+  MULTI_HOST:
+    "A panel of co-hosts in lively conversation. Distribute lines across all speakers and let them react to each other.",
+};
+
+/** Roughly 150 spoken words per minute → target word budget for the whole episode. */
+function wordBudget(minutes: number): number {
+  return Math.round(minutes * 150);
+}
+
+export function buildScriptMessages(config: EpisodeConfig) {
+  const speakerList = config.speakers
+    .map((s) => `- key "${s.speakerKey}" = ${s.displayName}`)
+    .join("\n");
+
+  const system = [
+    "You are an expert podcast scriptwriter and showrunner.",
+    "You write natural, engaging, spoken-word scripts that sound great when read aloud by AI voices.",
+    "Avoid stage directions, sound-effect notes, and parentheticals — output only spoken dialogue.",
+    "Return STRICT JSON only, matching the requested schema. Do not include markdown fences.",
+  ].join(" ");
+
+  const user = [
+    `Write a complete podcast episode script in ${config.language}.`,
+    "",
+    `Topic: ${config.topic}`,
+    `Tone: ${config.tone}`,
+    `Format: ${config.format} — ${FORMAT_GUIDANCE[config.format]}`,
+    config.audience ? `Target audience: ${config.audience}` : "",
+    `Approximate length: ${config.targetLengthMin} minutes (~${wordBudget(
+      config.targetLengthMin
+    )} words total).`,
+    "",
+    "Speakers (use ONLY these keys in `speakerKey`):",
+    speakerList,
+    "",
+    "Structure the episode into 3–6 sections (e.g. intro, main segments, outro).",
+    "Each section has a short title and a list of turns. Each turn is one speaker's spoken line.",
+    "",
+    "Return JSON with this exact shape:",
+    `{
+  "title": "string — a catchy episode title",
+  "sections": [
+    {
+      "id": "kebab-case-id",
+      "title": "string",
+      "turns": [
+        { "speakerKey": "host", "text": "spoken line..." }
+      ]
+    }
+  ]
+}`,
+  ]
+    .filter(Boolean)
+    .join("\n");
+
+  return [
+    { role: "system" as const, content: system },
+    { role: "user" as const, content: user },
+  ];
+}
+
+export function buildSectionMessages(
+  config: EpisodeConfig,
+  script: StructuredScript,
+  sectionId: string
+) {
+  const section = script.sections.find((s) => s.id === sectionId);
+  const speakerList = config.speakers.map((s) => `"${s.speakerKey}"=${s.displayName}`).join(", ");
+
+  const system =
+    "You are an expert podcast scriptwriter. Rewrite a single section of an existing episode, keeping the same speakers, tone, and language. Return STRICT JSON for just that one section.";
+
+  const user = [
+    `Episode title: ${script.title}`,
+    `Tone: ${config.tone}. Language: ${config.language}. Speakers: ${speakerList}.`,
+    "",
+    `Rewrite the section titled "${section?.title ?? sectionId}" (id "${sectionId}") to be fresh and engaging while serving the same purpose in the episode.`,
+    "",
+    "Return JSON with this exact shape:",
+    `{ "id": "${sectionId}", "title": "string", "turns": [ { "speakerKey": "host", "text": "..." } ] }`,
+  ].join("\n");
+
+  return [
+    { role: "system" as const, content: system },
+    { role: "user" as const, content: user },
+  ];
+}