// Typed wrappers over the Tauri command bridge into mtgc-core.
import { invoke } from "@tauri-apps/api/core";

// --- Types (mirror the serde-serialized core structs) ---------------------

export interface CardRef {
  oracle_id: string;
  name: string;
  mana_value: number;
  colors: number; // WUBRG bitmask
  color_identity: number; // WUBRG bitmask
  type_line: string;
  // Printed/displayed sideways (Battles, Planes, Phenomena). The stored
  // image itself is portrait-shaped with the content rotated, so viewers
  // must rotate it 90° to display right-side up.
  horizontal: boolean;
  image_uri: string; // Scryfall "normal" image URL, or "" if unavailable
  back_image_uri: string; // back face for transform/MDFC/reversible cards, else ""
  produced_mana: number; // WUBRG bitmask of mana this card can tap for
  produces_colorless: boolean; // can produce {C}
  price_usd: number; // USD market price, or 0 if unknown
  legalities: number; // 2 bits/format bitmask, see LEGALITY_FORMATS
}

export interface LibraryCard extends CardRef {
  quantity_owned: number;
  decks: string[];
  quantity_assigned: number;
  location: string;
}

export interface DeckEntry extends CardRef {
  quantity: number;
  is_commander: boolean;
  /** On the maybeboard: tracked against the deck but excluded from deck
   * analysis stats and library assignment totals. */
  is_maybeboard: boolean;
  quantity_owned: number;
}

/**
 * A `CardRef` plus whatever ownership context the caller happens to have
 * (present on `LibraryCard`/`DeckEntry`, absent on a bare `CardRef`). The
 * click-to-preview modal's info tile renders these fields when present and
 * omits them otherwise — callers don't need to do anything special, since
 * `LibraryCard`/`DeckEntry`/`CardRef` are all structurally assignable here.
 */
export type PreviewCard = CardRef & {
  quantity_owned?: number;
  decks?: string[];
};

export interface Deck {
  id: number;
  name: string;
  format: string;
  commander_oracle_id: string | null;
  notes: string;
}

export interface DeckImportResult {
  deck: Deck;
  unresolved: string[];
}

export interface LibraryImportResult {
  added: [string, number][];
  unresolved: string[];
}

export interface SynergyReason {
  category: string; // "Tribal" | "Mechanic" | "Archetype" | "Mana base"
  detail: string;
}

export interface CardSuggestion {
  card: CardRef;
  quantity_owned: number;
  score: number;
  reasons: SynergyReason[];
  edhrec_rank: number | null;
}

export interface LibraryFilter {
  text?: string | null;
  colors_exact?: number | null;
  colors_include?: number | null;
  commander_identity?: number | null;
  cmc_min?: number | null;
  cmc_max?: number | null;
  types?: string[];
  subtypes?: string[];
  keywords?: string[];
  in_deck?: number | null;
  location?: string | null;
  oracle_text?: string | null;
}

export interface Status {
  library_path: string;
  reference_path: string;
  reference_ready: boolean;
  card_count: number;
  reference_updated_at: number | null; // unix seconds
  /** True on mobile builds. Used to hide affordances that depend on choosing an
   * arbitrary filesystem path for library.db — Android scoped storage has no
   * equivalent, and SQLite can't be backed by a content:// URI. */
  is_mobile: boolean;
}

export interface LibraryStats {
  unique_cards: number;
  total_copies: number;
  deck_count: number;
  color_counts: [number, number, number, number, number]; // W, U, B, R, G
  colorless_count: number;
}

export interface LibraryFacets {
  types: string[];
  subtypes: string[];
  keywords: string[];
}

export interface IngestStageInfo {
  id: string;
  label: string;
  weight: number; // fraction of total work, 0..1, sums to 1 across all stages
}

export interface IngestProgress {
  stage: "index" | "oracle" | "printings" | "optimize" | string;
  message: string;
  overall_percent: number; // 0..100 cumulative across all stages
  stages: IngestStageInfo[];
}

// --- WUBRG bitmask helpers ------------------------------------------------

export const COLORS: { bit: number; code: string; label: string }[] = [
  { bit: 1, code: "W", label: "White" },
  { bit: 2, code: "U", label: "Blue" },
  { bit: 4, code: "B", label: "Black" },
  { bit: 8, code: "R", label: "Red" },
  { bit: 16, code: "G", label: "Green" },
];

export function maskToLetters(mask: number): string {
  return COLORS.filter((c) => mask & c.bit)
    .map((c) => c.code)
    .join("");
}

// --- Legality bitmask helpers ----------------------------------------------
// Mirrors mtgc-core's model::LEGALITY_FORMATS / Legalities exactly: 2 bits per
// format, in this fixed order. Do not reorder.

export const LEGALITY_FORMATS: { key: string; label: string }[] = [
  { key: "standard", label: "Standard" },
  { key: "pioneer", label: "Pioneer" },
  { key: "modern", label: "Modern" },
  { key: "legacy", label: "Legacy" },
  { key: "vintage", label: "Vintage" },
  { key: "pauper", label: "Pauper" },
  { key: "commander", label: "Commander" },
  { key: "brawl", label: "Brawl" },
];

export type LegalStatus = "not_legal" | "legal" | "banned" | "restricted";

const LEGAL_STATUS_CODES: readonly LegalStatus[] = ["not_legal", "legal", "banned", "restricted"];

export function legalStatusFor(legalities: number, formatLabel: string): LegalStatus {
  const i = LEGALITY_FORMATS.findIndex((f) => f.label === formatLabel);
  if (i < 0) return "not_legal";
  const code = (legalities >> (i * 2)) & 0b11;
  return LEGAL_STATUS_CODES[code];
}

// --- Commands -------------------------------------------------------------

export const api = {
  getStatus: () => invoke<Status>("get_status"),
  setLibraryPath: (path: string) => invoke<Status>("set_library_path", { path }),
  updateCardData: () => invoke<Status>("update_card_data"),
  cancelUpdateCardData: () => invoke<void>("cancel_update_card_data"),
  /** Adopt an already-built reference.db from `path` instead of downloading it. */
  importReferenceDb: (path: string) => invoke<Status>("import_reference_db", { path }),

  searchCards: (query: string, limit = 20) =>
    invoke<CardRef[]>("search_cards", { query, limit }),

  addOwned: (oracleId: string, delta: number) =>
    invoke<number>("add_owned", { oracleId, delta }),
  setOwned: (oracleId: string, quantity: number) =>
    invoke<number>("set_owned", { oracleId, quantity }),
  setLocation: (oracleId: string, location: string) =>
    invoke<void>("set_location", { oracleId, location }),

  searchLibrary: (filter: LibraryFilter) =>
    invoke<LibraryCard[]>("search_library", { filter }),
  searchReference: (filter: LibraryFilter, limit: number) =>
    invoke<LibraryCard[]>("search_reference", { filter, limit }),
  getLibraryStats: () => invoke<LibraryStats>("get_library_stats"),
  getLibraryFacets: () => invoke<LibraryFacets>("get_library_facets"),
  getReferenceFacets: () => invoke<LibraryFacets>("get_reference_facets"),

  listDecks: () => invoke<Deck[]>("list_decks"),
  createDeck: (name: string, commanderOracleId: string | null) =>
    invoke<Deck>("create_deck", { name, commanderOracleId }),
  deleteDeck: (deckId: number) => invoke<void>("delete_deck", { deckId }),
  renameDeck: (deckId: number, name: string) => invoke<void>("rename_deck", { deckId, name }),
  duplicateDeck: (deckId: number, newName: string) =>
    invoke<Deck>("duplicate_deck", { deckId, newName }),
  setDeckFormat: (deckId: number, format: string) =>
    invoke<void>("set_deck_format", { deckId, format }),
  setDeckCommander: (deckId: number, oracleId: string | null) =>
    invoke<void>("set_deck_commander", { deckId, oracleId }),
  setDeckCard: (
    deckId: number,
    oracleId: string,
    quantity: number,
    isCommander = false,
    isMaybeboard = false,
  ) => invoke<void>("set_deck_card", { deckId, oracleId, quantity, isCommander, isMaybeboard }),
  deckContents: (deckId: number) => invoke<DeckEntry[]>("deck_contents", { deckId }),
  suggestCards: (deckId: number, offset = 0, unusual = false) =>
    invoke<CardSuggestion[]>("suggest_cards", { deckId, offset, unusual }),
  cardDecks: (oracleId: string) => invoke<Deck[]>("card_decks", { oracleId }),

  exportDeck: (deckId: number, path: string) => invoke<void>("export_deck", { deckId, path }),
  importDeck: (path: string, name: string) =>
    invoke<DeckImportResult>("import_deck", { path, name }),
  exportLibraryCards: (oracleIds: string[], path: string) =>
    invoke<void>("export_library_cards", { oracleIds, path }),
  importLibraryCards: (path: string) =>
    invoke<LibraryImportResult>("import_library_cards", { path }),
};