export type Quantifier = "any" | "all" | "none" | "exactly";
export type ViewName = "tree" | "radial" | "map" | "table" | "stats";
export type ColorBy = "relation" | "family" | "confidence" | "depth" | "macroarea";

export interface WalsClause {
  feature_id: string;
  values: number[];
}

export interface NodePredicate {
  languages: string[];
  families: string[];
  macroareas: string[];
  statuses: string[];
  term_contains: string;
  term_regex?: string | null;
  require_coords: boolean;
  wals: WalsClause[];
  phonemes_have: string[];
  phonemes_lack: string[];
  require_tone: boolean | null;
  min_zipf?: number | null;
  max_rank?: number | null;
  keep_unknown: boolean;
}

export interface TreeQuery {
  term: string;
  lang: string;
  edges: {
    relations: string[];
    min_confidence: number;
    max_depth: number;
    max_visit: number;
  };
  leaf: NodePredicate;
  path: {
    node: NodePredicate;
    quantifier: Quantifier;
    exactly_k: number;
    relations_any: string[];
    relations_none: string[];
    apply_to_root: boolean;
  };
  expand: string[];
  cluster_threshold: number;
  max_payload: number;
  color_by: ColorBy;
}

export interface GraphNode {
  id: number | string;
  parent: number | string | null;
  kind: "word" | "cluster";
  term: string;
  lang: string;
  lang_display?: string | null;
  family_name?: string | null;
  macroarea?: string | null;
  status?: string | null;
  depth: number;
  relation?: string | null;
  confidence?: number | null;
  child_count?: number;
  visible_children?: number;
  latitude?: number | null;
  longitude?: number | null;
  glottocode?: string | null;
  iso_639_3?: string | null;
  zipf?: number | null;
  freq_rank?: number | null;
  count?: number;
  expand_key?: string;
  relation_mix?: Record<string, number>;
  sample?: string[];
}

export type DefinitionSense = { pos: string; glosses: string[] };

export type DefinitionPayload = {
  term: string;
  lang?: string;
  matched_code?: string | null;
  senses?: DefinitionSense[];
  fallback?: boolean;
  url?: string;
  error?: string | null;
};

export interface TreeResponse {
  root: {
    id: number;
    term: string;
    lang: string;
    lang_display?: string;
    family_name?: string;
    macroarea?: string;
    latitude?: number;
    longitude?: number;
  } | null;
  nodes: GraphNode[];
  stats: {
    visited: number;
    kept_leaves: number;
    surviving?: number;
    payload?: number;
    clustered?: number;
    elapsed_ms: number;
    truncated?: boolean;
    relations?: Record<string, number>;
    families?: Record<string, number>;
    depths?: Record<string, number>;
    error?: string;
  };
  truncated: boolean;
}

export interface SuggestHit {
  id?: number;
  term: string;
  lang: string;
  lang_display?: string;
  family_name?: string;
  child_count: number;
  blurb?: string;
}

export interface Meta {
  relations: string[];
  default_relations: string[];
  macroareas: string[];
  statuses: string[];
  languages: { key: string; display: string; family?: string; nodes: number }[];
  families: { name: string; nodes: number }[];
  wals_features: { id: string; name: string; values: { value: number; label: string }[] }[];
  top_phonemes: string[];
  examples: SuggestHit[];
  citation: { dataset: string; url: string; doi: string; license: string; author: string };
  nodes: number;
  edges: number;
}

export function emptyPredicate(): NodePredicate {
  return {
    languages: [],
    families: [],
    macroareas: [],
    statuses: [],
    term_contains: "",
    require_coords: false,
    wals: [],
    phonemes_have: [],
    phonemes_lack: [],
    require_tone: null,
    min_zipf: null,
    max_rank: null,
    keep_unknown: false,
  };
}