export type PromptDefaultRole = {
  name: string;
  title: string;
  role: string;
  visualDescription?: string;
  actionDescription?: string;
  sceneVisualDescription?: string;
  description?: string;
  backstory?: string;
  personality?: string;
  motivation?: string;
  combatStyle?: string;
  tags?: string[];
};

export type CustomWorldRolePromptBundle = {
  visualPromptText: string;
  animationPromptText: string;
  scenePromptText: string;
};

function cleanSeedText(value: string | undefined, maxLength: number) {
  return (value ?? '').replace(/\s+/gu, ' ').trim().slice(0, maxLength);
}

function pickFirstDescription(
  values: Array<string | undefined>,
  maxLength: number,
) {
  for (const value of values) {
    const normalized = cleanSeedText(value, maxLength);
    if (normalized) {
      return normalized;
    }
  }

  return '';
}

export function buildDefaultRolePromptBundle(
  role: PromptDefaultRole,
): CustomWorldRolePromptBundle {
  return {
    visualPromptText: pickFirstDescription(
      [role.visualDescription, role.description],
      220,
    ),
    animationPromptText: pickFirstDescription(
      [role.actionDescription, role.combatStyle],
      180,
    ),
    scenePromptText: pickFirstDescription(
      [role.sceneVisualDescription, role.backstory],
      220,
    ),
  };
}