// Convert a SeedDraft into a ProseMirror JSON document the user lands on in
// the editor. After the pivot the prose is canonical; the analyze pipeline
// derives taxonomy / glossary / model / requirements from it on demand.
//
// We use a deterministic template (not an LLM) — fast, predictable, and the
// user is going to keep editing anyway. Section structure mirrors the seed
// fields so the analyze passes have clear hooks.

import type { JSONContent } from "@tiptap/react";
import type { SeedDraft } from "./seedInterview";

export function seedToProseDoc(seed: SeedDraft): JSONContent {
  const content: JSONContent[] = [];

  if (seed.title) {
    content.push({ type: "heading", attrs: { level: 1 }, content: [{ type: "text", text: seed.title }] });
  } else {
    content.push({ type: "heading", attrs: { level: 1 }, content: [{ type: "text", text: "Untitled idea" }] });
  }

  if (seed.problem) {
    content.push({ type: "heading", attrs: { level: 2 }, content: [{ type: "text", text: "Problem" }] });
    content.push({ type: "paragraph", content: [{ type: "text", text: seed.problem }] });
  }

  if (seed.targetUser) {
    content.push({ type: "heading", attrs: { level: 2 }, content: [{ type: "text", text: "Target user" }] });
    content.push({ type: "paragraph", content: [{ type: "text", text: seed.targetUser }] });
  }

  if (seed.desiredOutcome) {
    content.push({ type: "heading", attrs: { level: 2 }, content: [{ type: "text", text: "Desired outcome" }] });
    content.push({ type: "paragraph", content: [{ type: "text", text: seed.desiredOutcome }] });
  }

  if (seed.initialHypothesis) {
    content.push({ type: "heading", attrs: { level: 2 }, content: [{ type: "text", text: "Initial hypothesis" }] });
    content.push({ type: "paragraph", content: [{ type: "text", text: seed.initialHypothesis }] });
  }

  if (seed.constraints && seed.constraints.length > 0) {
    content.push({ type: "heading", attrs: { level: 2 }, content: [{ type: "text", text: "Constraints" }] });
    for (const c of seed.constraints) {
      content.push({ type: "paragraph", content: [{ type: "text", text: `· ${c}` }] });
    }
  }

  return { type: "doc", content };
}