/**
 * Shared TypeScript interfaces for the health-marketing-compliance-rag frontend.
 * These interfaces mirror the src/persistence.py schema exactly so that any
 * future server-side persistence migration requires no data transformation.
 */

export interface Message {
  role: "user" | "assistant";
  content: string;
}

export interface Citation {
  index: number;
  domain: string;
  title: string;
  source_url?: string;
  line_num?: number;
}

export interface QueryResult {
  citations: Citation[];
  domains_searched: string[];
  sections_retrieved: number;
  timing: Record<string, number>;
  token_usage: { total_tokens: number };
}

export interface Conversation {
  id: string;                           // UUID
  title: string;                        // first user message, ≤80 chars
  created_at: string;                   // ISO 8601 UTC
  last_active_at: string;               // ISO 8601 UTC
  messages: Message[];
  history: Message[];                   // condensed history for pipeline
  results: Record<string, QueryResult>; // keyed by message index (string)
}

export interface SavedResponse {
  id: string;                           // "{conversation_id}:{msg_index}"
  question: string;
  answer: string;
  saved_at: string;                     // ISO 8601 UTC
  source_conversation_id: string;
  source_conversation_title: string;
  msg_index: number;
  messages_pair: Message[];
  history_pair: Message[];
  result: QueryResult;
}

export interface ChatState {
  conversationId: string;               // UUID, new per session
  messages: Message[];                  // rendered chat thread
  history: Message[];                   // condensed history sent to API
  results: Record<string, QueryResult>; // keyed by message index
  streamingIndex: number | null;        // index of in-flight assistant message
  streamingContent: string;             // accumulated SSE tokens
  isStreaming: boolean;
}

/**
 * Supported response languages drawn from src/language.py.
 * Keys are BCP-47 language codes; values are display names.
 */
export const SUPPORTED_LANGUAGES: Record<string, string> = {
  en: "English",
  mi: "te reo Māori",
  tl: "Filipino",
  hi: "Hindi",
  sm: "Samoan",
  "zh-cn": "Mandarin Chinese",
  "zh-tw": "Cantonese/Traditional Chinese",
};

/**
 * Practitioner profession options for scoping compliance answers
 * to the relevant council/board rules.
 */
export const PROFESSIONS = [
  "Chiropractor",
  "Osteopath",
  "Physiotherapist",
  "Chinese Medicine",
  "Naturopath",
  "Supplement Retailer",
] as const;

export type Profession = (typeof PROFESSIONS)[number];