import type { UserProfileSignals } from "./user-profile-harvest";

/** Product bar: entry never requires power-user literacy (Ingo — Thermomix mom to hard math). */
export const SKILL_FLOOR_LABEL = "grandma-simple entry";
/** Product bar: depth is expert-grade per specialty, not one mediocre generalist. */
export const SKILL_CEILING_LABEL = "expert-grade per specialty";

/** How the user wants to relate to Oos — never a lifestyle label. */
export type InteractionStyle = "unknown" | "geek-peer" | "quiet-doer";

/** Onboarding focus ids from `apps/api/src/onboarding.ts` — maps to crew fit, not persona for everyone. */
export type OnboardingFocusId = "day" | "inbox" | "research" | "crew";

export interface UserHelpVibeHints {
  interactionStyle: InteractionStyle;
  /** Specialist lanes to consider when spawning — suggestions only, not assignments. */
  suggestedLanes: string[];
  /** Honest observed signals — no invented hobbies or scene/club/office guesses. */
  observedSignals: string[];
  focusChoiceId?: OnboardingFocusId;
  inferredAt: string;
}

/** Focus choice → help shape. Lifestyle-agnostic: same lanes can serve any user. */
export const FOCUS_HELP_VIBE_MAP: Record<
  OnboardingFocusId,
  { interactionStyle: InteractionStyle; suggestedLanes: string[] }
> = {
  day: {
    interactionStyle: "quiet-doer",
    suggestedLanes: ["inbox-work", "chief-operator", "curator"],
  },
  inbox: {
    interactionStyle: "quiet-doer",
    suggestedLanes: ["inbox-work", "inbox-life", "chief-operator"],
  },
  research: {
    interactionStyle: "geek-peer",
    suggestedLanes: ["curator", "builder", "engineer"],
  },
  crew: {
    interactionStyle: "unknown",
    suggestedLanes: ["chief-operator", "specialist"],
  },
};

export function mergeHelpVibeHints(
  base: UserHelpVibeHints,
  focusId: OnboardingFocusId,
): UserHelpVibeHints {
  const mapped = FOCUS_HELP_VIBE_MAP[focusId];
  const lanes = [...new Set([...base.suggestedLanes, ...mapped.suggestedLanes])];
  return {
    ...base,
    focusChoiceId: focusId,
    interactionStyle:
      base.interactionStyle === "unknown" ? mapped.interactionStyle : base.interactionStyle,
    suggestedLanes: lanes,
    observedSignals: [...base.observedSignals, `focus:${focusId}`],
    inferredAt: new Date().toISOString(),
  };
}

/**
 * Infer help & vibe from signals we actually have — never fake lifestyle or scene/office type.
 * Interaction style stays `unknown` until focus choice or explicit prefs land.
 */
export function inferHelpVibeHints(
  signals: UserProfileSignals,
  extras?: { focusChoiceId?: OnboardingFocusId },
): UserHelpVibeHints {
  const observedSignals: string[] = [];
  const suggestedLanes = new Set<string>();

  if (signals.computerHost) {
    observedSignals.push("computer-attached");
    suggestedLanes.add("builder");
    suggestedLanes.add("engineer");
  }

  if (signals.defaultProvider === "openai-compatible") {
    observedSignals.push("self-hosted-model");
    suggestedLanes.add("engineer");
  }

  if (signals.uiLocale) {
    observedSignals.push(`ui-locale:${signals.uiLocale}`);
  }

  let hints: UserHelpVibeHints = {
    interactionStyle: "unknown",
    suggestedLanes: [...suggestedLanes],
    observedSignals,
    inferredAt: new Date().toISOString(),
  };

  if (extras?.focusChoiceId) {
    hints = mergeHelpVibeHints(hints, extras.focusChoiceId);
  }

  return hints;
}

export function summarizeHelpVibe(hints: UserHelpVibeHints): string {
  const parts: string[] = [];
  if (hints.interactionStyle !== "unknown") {
    parts.push(hints.interactionStyle === "geek-peer" ? "geek-peer OK" : "quiet-doer");
  }
  if (hints.suggestedLanes.length) {
    parts.push(hints.suggestedLanes.slice(0, 3).join(", "));
  }
  if (hints.focusChoiceId) {
    parts.push(`focus:${hints.focusChoiceId}`);
  }
  return parts.length ? parts.join(" · ") : "learning from you";
}

const HELP_VIBE_SECTION = "## Help & vibe (inferred)";

export function mergeHelpVibeIntoMemory(existing: string, hints: UserHelpVibeHints): string {
  const block = formatHelpVibeBlock(hints);
  const marker = HELP_VIBE_SECTION;
  const start = existing.indexOf(marker);
  if (start === -1) {
    const trimmed = existing.trimEnd();
    const prefix = trimmed.length ? `${trimmed}\n\n` : "";
    return `${prefix}${marker}\n\n${block}\n`;
  }
  const rest = existing.slice(start + marker.length);
  const nextSection = rest.search(/\n## /);
  const tail = nextSection === -1 ? "" : rest.slice(nextSection);
  return `${existing.slice(0, start).trimEnd()}\n\n${marker}\n\n${block}${tail}`;
}

function formatHelpVibeBlock(hints: UserHelpVibeHints): string {
  const styleLine =
    hints.interactionStyle === "unknown"
      ? "unknown — learn from conversations (geek-peer vs quiet-doer)"
      : hints.interactionStyle === "geek-peer"
        ? "geek-peer — fachsimpeln welcome when they want depth"
        : "quiet-doer — execute without acting like we know better";

  const lines = [
    `- **Updated:** ${hints.inferredAt}`,
    `- **Interaction style:** ${styleLine}`,
    hints.focusChoiceId ? `- **Focus choice:** ${hints.focusChoiceId}` : null,
    hints.observedSignals.length
      ? `- **Observed signals:** ${hints.observedSignals.join(", ")}`
      : null,
    hints.suggestedLanes.length
      ? `- **Suggested specialist lanes:** ${hints.suggestedLanes.join(", ")} (_suggestions — spawn/select accordingly_)`
      : null,
    `- **Skill floor:** ${SKILL_FLOOR_LABEL}`,
    `- **Skill ceiling:** ${SKILL_CEILING_LABEL}`,
    "",
    "_Simple entry, deep ceiling — domain excellence without power-user literacy. Not one mediocre Wunderwuzzi._",
  ];
  return lines.filter((line) => line !== null).join("\n");
}