export const PRODUCT_OVERVIEW_FILENAME = 'PRODUCT_OVERVIEW.md';
export const LEGACY_PROMOTION_PLAN_FILENAME = 'PROMOTION_PLAN.md';

export const PROJECT_TYPES = ['interactive_ai_app', 'custom'] as const;
export type ProjectType = (typeof PROJECT_TYPES)[number];

const LEGACY_INTERACTIVE_PROJECT_TYPES = new Set(['mini_game', 'mini_program']);

export function isProjectType(value: unknown): value is ProjectType {
  return typeof value === 'string' && PROJECT_TYPES.includes(value as ProjectType);
}

export function normalizeProjectType(value: unknown): ProjectType | undefined {
  if (isProjectType(value)) return value;
  if (typeof value === 'string' && LEGACY_INTERACTIVE_PROJECT_TYPES.has(value)) {
    return 'interactive_ai_app';
  }
  return undefined;
}

export type ProjectAgentResponsibility = {
  mission: string;
  owns: string[];
  boundaries: string[];
  collaborators: string[];
  principles: string[];
};

export const MAX_PROJECT_AGENT_AVATAR_DATA_URL_LENGTH = 800_000;

const PROJECT_AGENT_AVATAR_DATA_URL_PATTERN = /^data:image\/(?:webp|png|jpeg);base64,[A-Za-z0-9+/]+={0,2}$/u;

export function isProjectAgentAvatarDataUrl(value: unknown): value is string {
  return typeof value === 'string'
    && value.length <= MAX_PROJECT_AGENT_AVATAR_DATA_URL_LENGTH
    && PROJECT_AGENT_AVATAR_DATA_URL_PATTERN.test(value);
}