// 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;
  /** The printing whose art this slot shows; `image_uri` already reflects it. */
  preferred_scryfall_id: string | null;
}

/** One printing of a card, for the printing picker and copy labels. */
export interface PrintingRef {
  scryfall_id: string;
  set_code: string; // lowercase, e.g. "2x2"
  collector_number: string;
  lang: string; // "" on an older card database
  finishes: string[]; // "nonfoil" | "foil" | "etched"
  rarity: string;
  image_uri: string;
  back_image_uri: string;
  price_usd: number;
  released_at: string; // YYYY-MM-DD, "" on an older card database
}

/** Owned copies pinned to one printing + finish. A subset of the card's
 *  `quantity_owned`; copies in no group are unspecified. */
export interface LibraryCopy {
  scryfall_id: string;
  finish: string;
  quantity: number;
  /** Null when the printing has left the card database. */
  printing: PrintingRef | null;
}

/**
 * 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[];
  preferred_scryfall_id?: string | null;
};

/**
 * Where a click preview was opened from, when the caller lets it edit
 * printings: the info tile then tracks owned copies by printing, and — for a
 * deck slot — chooses which printing's art the slot shows.
 */
export interface PreviewContext {
  /** Called after any printing change, so the caller can refetch. */
  onChanged: () => void;
  /** The deck the previewed card is a slot of. */
  deckId?: number;
}

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"
  /** The specific thing matched — "Dragon", "Flying", "Landfall". Separate from
   *  `detail` so the UI can filter on it: a deck usually has several archetypes
   *  and you want one of them, not all. */
  subject: string;
  detail: string;
}

export interface CardSuggestion {
  card: CardRef;
  quantity_owned: number;
  /** Copies other decks' main boards already use. */
  quantity_assigned: 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;
  /** Hide cards that exist *only* as Universes Beyond (Lord of the Rings,
   *  Warhammer 40,000, Marvel, …). Ordinary cards reprinted into a UB set are
   *  kept. Needs card data downloaded after this shipped; inert otherwise. */
  exclude_universes_beyond?: boolean;
  /** Hide Arena/MTGO-only cards (Alchemy rebalances) — they can't be owned on
   *  paper. Needs card data downloaded after this shipped; inert otherwise. */
  exclude_digital_only?: boolean;
  /** Hide Un-set cards (Unglued, Unhinged, Unstable, Unfinity). */
  exclude_funny?: boolean;
  /** Cheapest known printing in USD; cards with no known price count as 0. */
  price_min?: number | null;
  price_max?: number | null;
  /** Format slug ("commander", "modern", …). Legal and restricted match. */
  legal_in?: string | null;
  /** Only cards that can head a Commander deck. */
  can_be_commander?: boolean;
  /** Only creatures with an empty rules box (Adventure/Prepared creature halves count). */
  vanilla_only?: boolean;
  /** Only cards printed in this set (matched against printings.set_code).
   *  Lets the release browser reuse the whole criteria pipeline. */
  set_code?: string | null;
  /** Only cards with an empty color identity — a colorless commander's pool.
   *  Separate from the color bitmasks, where 0 means "no filter". */
  colorless_identity?: boolean;
  /** Only cards that are themselves colorless. */
  colorless_colors?: boolean;
  /** Printed power/toughness. Cards printed with "*" or "1+*" are excluded,
   *  since those can't be compared numerically. */
  power_min?: number | null;
  power_max?: number | null;
  toughness_min?: number | null;
  toughness_max?: number | null;
  /** Only cards with zero owned copies. Only honored by `searchReference`
   *  (`searchLibrary` already returns owned cards exclusively). */
  not_owned?: boolean;
  /** Only cards with more copies owned than the decks' main boards use. */
  spares_only?: boolean;
  /** Only cards printed at any of these rarities ("common", "uncommon",
   *  "rare", "mythic"). Any printing counts; with `set_code`, that set's. */
  rarities?: string[];
}

export interface Status {
  /** The open library's name and where it syncs: "Main · user @ host", or
   *  this device only. Changes whenever another library is opened. */
  library_label: string;
  /** The open library. */
  library: { id: string; name: string };
  reference_path: string;
  reference_ready: boolean;
  card_count: number;
  reference_updated_at: number | null; // unix seconds
  /** Columns the installed card data lacks ("table.column") because an older
   *  version built it. Non-empty means some features are degraded until the
   *  user updates card data. */
  reference_missing_columns: string[];
  /** 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;
}

/** The account a device is signed in to on a sync server. */
export interface SyncAccount {
  id: string;
  username: string;
  display_name: string;
  email: string;
  /** "local" (username/password) or "oidc" (single sign-on). */
  method: string;
}

/** Library sync with a sync server. The library itself always lives on this
 *  device and works offline; syncing exchanges edits with the other devices. */
export interface SyncStatus {
  signed_in: boolean;
  /** Kept after signing out, to offer signing back in. */
  server_url: string | null;
  account: SyncAccount | null;
  /** Unix seconds of the last completed sync. */
  last_synced_at: number | null;
  /** Why the last sync failed, until one succeeds. */
  last_error: string | null;
  /** The first sync found libraries both here and on the server; waiting on
   *  `syncConnect` to say whether to combine them or take the server's. */
  needs_choice: boolean;
  /** Edits made here that the server hasn't acknowledged yet. */
  pending_changes: boolean;
  /** A sign-in is waiting on the browser. */
  signing_in: boolean;
  /** A pre-document library.db from an older build, waiting to be imported. */
  legacy_library: string | null;
}

/** One of the account's signed-in devices. */
export interface SyncDevice {
  id: number;
  name: string;
  created_at: number;
  last_seen_at: number;
  /** Whether it's this device. */
  current: boolean;
}

export type FirstSync = "combine" | "use_server";

export interface MergeReport {
  cards_changed: number;
  decks_changed: number;
  decks_removed: number;
  /** Fields both sides changed, where the server's value was kept. */
  conflicts: string[];
}

/** What an import of a library file brought in. */
export interface ImportReport {
  cards: number;
  decks: number;
  report: MergeReport;
}

/** What one sync did. */
export interface SyncReport {
  /** Whether the merge altered this device's library. */
  changed: boolean;
  /** Whether the server's copy was replaced (skipped when there was nothing to add). */
  published: boolean;
  /** The first sync is waiting on the user — see `SyncStatus.needs_choice`. */
  needs_choice: boolean;
  report: MergeReport;
  /** Libraries were added, renamed, or deleted on the server: re-list them. */
  libraries_changed: boolean;
}

/** One of the libraries on this device. */
export interface LibraryInfo {
  /** Local only; never shown. */
  id: string;
  name: string;
  /** The one that's open. */
  active: boolean;
  /** The library the device started with, which can't be deleted. */
  is_default: boolean;
  /** Whether it should be on the sync server. */
  sync: boolean;
  /** Whether it's linked to a library on the server yet. */
  linked: boolean;
  /** Another device deleted it from the server; this copy is all that's left. */
  server_deleted: boolean;
}

/** The open library, for `libraryKey`. Set by `App` from each status. */
let openLibraryId = "default";

export function setOpenLibrary(id: string) {
  openLibraryId = id;
}

/** A localStorage key for something that belongs to the open library — a
 *  selected deck, say — so each library remembers its own. The default
 *  library keeps the bare key it always had. */
export function libraryKey(key: string): string {
  return openLibraryId === "default" ? key : `${key}:${openLibraryId}`;
}

/** A published or upcoming Magic set, from Scryfall. */
export interface SetInfo {
  code: string;
  name: string;
  set_type: string;
  /** ISO date; null for sets with no announced date, which sort last. */
  released_at: string | null;
  card_count: number;
  icon_uri: string;
  scryfall_uri: string;
}

/** A news article — title and link only; the app links out rather than
 *  reproducing anyone's writing. */
export interface Article {
  category: string;
  title: string;
  url: string;
}

export interface News {
  sets: SetInfo[];
  articles: Article[];
  /** Unix seconds of the last successful fetch; 0 if never. */
  fetched_at: number;
  /** False when the article source couldn't be reached or its markup changed.
   *  Only that section is affected — releases stay usable. */
  articles_ok: boolean;
}

/** A card in a set. Extends CardRef so it renders with the same CardTile —
 *  and therefore the same click-to-preview — as every other card in the app. */
export interface SetCard extends CardRef {
  collector_number: string;
  quantity_owned: number;
}

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"),
  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 }),
  syncStatus: () => invoke<SyncStatus>("sync_status"),
  /** Sign in through the browser, then sync. Resolves once the user finishes
   *  (or abandons) signing in there. */
  syncSignIn: (serverUrl: string, deviceName?: string) =>
    invoke<SyncStatus>("sync_sign_in", { serverUrl, deviceName: deviceName || null }),
  syncCancelSignIn: () => invoke<void>("sync_cancel_sign_in"),
  /** Sign this device out. The library stays here. */
  syncSignOut: () => invoke<SyncStatus>("sync_sign_out"),
  /** Merge with the server and publish local edits. Resolves with `null` when
   *  not signed in, or a sync was already running and this call stood down —
   *  expected, since sync also fires automatically. */
  syncNow: () => invoke<SyncReport | null>("sync_now"),
  /** Answer the first-sync question. */
  syncConnect: (choice: FirstSync) => invoke<SyncReport | null>("sync_connect", { choice }),
  syncDevices: () => invoke<SyncDevice[]>("sync_devices"),
  /** Sign another device out (a lost phone, say); returns the remaining list. */
  syncRevokeDevice: (id: number) => invoke<SyncDevice[]>("sync_revoke_device", { id }),
  listLibraries: () => invoke<LibraryInfo[]>("list_libraries"),
  /** Start a new, empty library and open it. Resolves with the new list. */
  createLibrary: (name: string, sync: boolean) =>
    invoke<LibraryInfo[]>("create_library", { name, sync }),
  /** Open another library. */
  switchLibrary: (id: string) => invoke<LibraryInfo[]>("switch_library", { id }),
  /** Rename a library, on the sync server too when it's there. */
  renameLibrary: (id: string, name: string) => invoke<LibraryInfo[]>("rename_library", { id, name }),
  /** Delete a library from this device; with `everywhere`, from the server too. */
  deleteLibrary: (id: string, everywhere: boolean) =>
    invoke<LibraryInfo[]>("delete_library", { id, everywhere }),
  /** Put a library on the sync server, or keep it on this device only. */
  setLibrarySync: (id: string, sync: boolean) => invoke<LibraryInfo[]>("set_library_sync", { id, sync }),
  /** Merge a library file into the open one: a JSON backup, or an old library.db. */
  importLibraryFile: (path: string) => invoke<ImportReport>("import_library_file", { path }),
  /** Save the whole open library as JSON, as a backup. */
  exportLibraryDocument: (path: string) => invoke<void>("export_library_document", { path }),

  /** Set releases and article links. `refresh` forces a fetch past the cache. */
  getNews: (refresh = false) => invoke<News>("get_news", { refresh }),
  /** Every card in a set, annotated with how many you own. */
  getSetCards: (code: string) => invoke<SetCard[]>("get_set_cards", { code }),

  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, options: { unusual?: boolean; owned_only?: boolean } = {}) =>
    invoke<CardSuggestion[]>("suggest_cards", { deckId, offset, options }),
  cardDecks: (oracleId: string) => invoke<Deck[]>("card_decks", { oracleId }),

  /** Every paper printing of a card, newest first. */
  listPrintings: (oracleId: string) => invoke<PrintingRef[]>("list_printings", { oracleId }),
  listLibraryCopies: (oracleId: string) =>
    invoke<LibraryCopy[]>("list_library_copies", { oracleId }),
  /** Set how many owned copies are this printing + finish (0 removes the
   *  group). Resolves with the card's owned quantity, which grows to fit. */
  setLibraryCopy: (oracleId: string, scryfallId: string, finish: string, quantity: number) =>
    invoke<number>("set_library_copy", { oracleId, scryfallId, finish, quantity }),
  /** Choose which printing a deck slot shows; null restores the default.
   *  Resolves with the slot afterwards (its art reflecting the choice). */
  setDeckCardPrinting: (deckId: number, oracleId: string, scryfallId: string | null) =>
    invoke<DeckEntry | null>("set_deck_card_printing", { deckId, oracleId, scryfallId }),

  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 }),
  /** `location`, unless blank, is set on every imported card. */
  importLibraryCards: (path: string, location: string) =>
    invoke<LibraryImportResult>("import_library_cards", { path, location }),
};