syntax = "proto3";

package BackendProto;

// Generic containers
///////////////////////////////////////////////////////////

message Empty {}

message OptionalInt32 {
  sint32 val = 1;
}

message OptionalUInt32 {
  uint32 val = 1;
}

message Int32 {
  sint32 val = 1;
}

message UInt32 {
  uint32 val = 1;
}

message Int64 {
  int64 val = 1;
}

message String {
  string val = 1;
}

message Json {
  bytes json = 1;
}

message Bool {
  bool val = 1;
}

// IDs used in RPC calls
///////////////////////////////////////////////////////////

message NoteTypeID {
  int64 ntid = 1;
}

message NoteID {
  int64 nid = 1;
}

message CardID {
  int64 cid = 1;
}

message CardIDs {
  repeated int64 cids = 1;
}

message DeckID {
  int64 did = 1;
}

message DeckConfigID {
  int64 dcid = 1;
}

// New style RPC definitions
///////////////////////////////////////////////////////////

service BackendService {
  rpc LatestProgress(Empty) returns (Progress);
  rpc SetWantsAbort(Empty) returns (Empty);

  // card rendering

  rpc ExtractAVTags(ExtractAVTagsIn) returns (ExtractAVTagsOut);
  rpc ExtractLatex(ExtractLatexIn) returns (ExtractLatexOut);
  rpc GetEmptyCards(Empty) returns (EmptyCardsReport);
  rpc RenderExistingCard(RenderExistingCardIn) returns (RenderCardOut);
  rpc RenderUncommittedCard(RenderUncommittedCardIn) returns (RenderCardOut);
  rpc StripAVTags(String) returns (String);

  // searching

  rpc NormalizeSearch(String) returns (String);
  rpc SearchCards(SearchCardsIn) returns (SearchCardsOut);
  rpc SearchNotes(SearchNotesIn) returns (SearchNotesOut);
  rpc NegateSearch(String) returns (String);
  rpc ConcatenateSearches(ConcatenateSearchesIn) returns (String);
  rpc ReplaceSearchTerm(ReplaceSearchTermIn) returns (String);
  rpc FindAndReplace(FindAndReplaceIn) returns (UInt32);

  // scheduling

  rpc LocalMinutesWest(Int64) returns (Int32);
  rpc SetLocalMinutesWest(Int32) returns (Empty);
  rpc SchedTimingToday(Empty) returns (SchedTimingTodayOut);
  rpc StudiedToday(Empty) returns (String);
  rpc StudiedTodayMessage(StudiedTodayMessageIn) returns (String);
  rpc UpdateStats(UpdateStatsIn) returns (Empty);
  rpc ExtendLimits(ExtendLimitsIn) returns (Empty);
  rpc CountsForDeckToday(DeckID) returns (CountsForDeckTodayOut);
  rpc CongratsInfo(Empty) returns (CongratsInfoOut);
  rpc RestoreBuriedAndSuspendedCards(CardIDs) returns (Empty);
  rpc UnburyCardsInCurrentDeck(UnburyCardsInCurrentDeckIn) returns (Empty);
  rpc BuryOrSuspendCards(BuryOrSuspendCardsIn) returns (Empty);
  rpc EmptyFilteredDeck(DeckID) returns (Empty);
  rpc RebuildFilteredDeck(DeckID) returns (UInt32);
  rpc ScheduleCardsAsReviews(ScheduleCardsAsReviewsIn) returns (Empty);
  rpc ScheduleCardsAsNew(ScheduleCardsAsNewIn) returns (Empty);
  rpc SortCards(SortCardsIn) returns (Empty);
  rpc SortDeck(SortDeckIn) returns (Empty);

  // stats

  rpc CardStats(CardID) returns (String);
  rpc Graphs(GraphsIn) returns (GraphsOut);

  // media

  rpc CheckMedia(Empty) returns (CheckMediaOut);
  rpc TrashMediaFiles(TrashMediaFilesIn) returns (Empty);
  rpc AddMediaFile(AddMediaFileIn) returns (String);
  rpc EmptyTrash(Empty) returns (Empty);
  rpc RestoreTrash(Empty) returns (Empty);

  // decks

  rpc AddOrUpdateDeckLegacy(AddOrUpdateDeckLegacyIn) returns (DeckID);
  rpc DeckTree(DeckTreeIn) returns (DeckTreeNode);
  rpc DeckTreeLegacy(Empty) returns (Json);
  rpc GetAllDecksLegacy(Empty) returns (Json);
  rpc GetDeckIDByName(String) returns (DeckID);
  rpc GetDeckLegacy(DeckID) returns (Json);
  rpc GetDeckNames(GetDeckNamesIn) returns (DeckNames);
  rpc NewDeckLegacy(Bool) returns (Json);
  rpc RemoveDeck(DeckID) returns (Empty);

  // deck config

  rpc AddOrUpdateDeckConfigLegacy(AddOrUpdateDeckConfigLegacyIn)
      returns (DeckConfigID);
  rpc AllDeckConfigLegacy(Empty) returns (Json);
  rpc GetDeckConfigLegacy(DeckConfigID) returns (Json);
  rpc NewDeckConfigLegacy(Empty) returns (Json);
  rpc RemoveDeckConfig(DeckConfigID) returns (Empty);

  // cards

  rpc GetCard(CardID) returns (Card);
  rpc UpdateCard(Card) returns (Empty);
  rpc AddCard(Card) returns (CardID);
  rpc RemoveCards(RemoveCardsIn) returns (Empty);
  rpc SetDeck(SetDeckIn) returns (Empty);

  // notes

  rpc NewNote(NoteTypeID) returns (Note);
  rpc AddNote(AddNoteIn) returns (NoteID);
  rpc UpdateNote(Note) returns (Empty);
  rpc GetNote(NoteID) returns (Note);
  rpc RemoveNotes(RemoveNotesIn) returns (Empty);
  rpc AddNoteTags(AddNoteTagsIn) returns (UInt32);
  rpc UpdateNoteTags(UpdateNoteTagsIn) returns (UInt32);
  rpc GetNoteTags(GetNoteTagsIn) returns (GetNoteTagsOut);
  rpc ClozeNumbersInNote(Note) returns (ClozeNumbersInNoteOut);
  rpc AfterNoteUpdates(AfterNoteUpdatesIn) returns (Empty);
  rpc FieldNamesForNotes(FieldNamesForNotesIn) returns (FieldNamesForNotesOut);
  rpc NoteIsDuplicateOrEmpty(Note) returns (NoteIsDuplicateOrEmptyOut);
  rpc CardsOfNote(NoteID) returns (CardIDs);

  // note types

  rpc AddOrUpdateNotetype(AddOrUpdateNotetypeIn) returns (NoteTypeID);
  rpc GetStockNotetypeLegacy(GetStockNotetypeIn) returns (Json);
  rpc GetNotetypeLegacy(NoteTypeID) returns (Json);
  rpc GetNotetypeNames(Empty) returns (NoteTypeNames);
  rpc GetNotetypeNamesAndCounts(Empty) returns (NoteTypeUseCounts);
  rpc GetNotetypeIDByName(String) returns (NoteTypeID);
  rpc RemoveNotetype(NoteTypeID) returns (Empty);

  // collection

  rpc OpenCollection(OpenCollectionIn) returns (Empty);
  rpc CloseCollection(CloseCollectionIn) returns (Empty);
  rpc CheckDatabase(Empty) returns (CheckDatabaseOut);

  // sync

  rpc SyncMedia(SyncAuth) returns (Empty);
  rpc AbortSync(Empty) returns (Empty);
  rpc AbortMediaSync(Empty) returns (Empty);
  rpc BeforeUpload(Empty) returns (Empty);
  rpc SyncLogin(SyncLoginIn) returns (SyncAuth);
  rpc SyncStatus(SyncAuth) returns (SyncStatusOut);
  rpc SyncCollection(SyncAuth) returns (SyncCollectionOut);
  rpc FullUpload(SyncAuth) returns (Empty);
  rpc FullDownload(SyncAuth) returns (Empty);

  // translation/messages

  rpc TranslateString(TranslateStringIn) returns (String);
  rpc FormatTimespan(FormatTimespanIn) returns (String);
  rpc I18nResources(Empty) returns (Json);

  // tags

  rpc RegisterTags(RegisterTagsIn) returns (Bool);
  rpc AllTags(Empty) returns (AllTagsOut);
  rpc SetTagCollapsed(SetTagCollapsedIn) returns (Bool);
  rpc ClearTag(String) returns (Bool);
  rpc TagTree(Empty) returns (TagTreeNode);

  // config/preferences

  rpc GetConfigJson(String) returns (Json);
  rpc SetConfigJson(SetConfigJsonIn) returns (Empty);
  rpc RemoveConfig(String) returns (Empty);
  rpc SetAllConfig(Json) returns (Empty);
  rpc GetAllConfig(Empty) returns (Json);
  rpc GetPreferences(Empty) returns (Preferences);
  rpc SetPreferences(Preferences) returns (Empty);
}

// Protobuf stored in .anki2 files
// These should be moved to a separate file in the future
///////////////////////////////////////////////////////////

message DeckConfigInner {
  enum NewCardOrder {
    NEW_CARD_ORDER_DUE = 0;
    NEW_CARD_ORDER_RANDOM = 1;
  }

  enum LeechAction {
    LEECH_ACTION_SUSPEND = 0;
    LEECH_ACTION_TAG_ONLY = 1;
  }

  repeated float learn_steps = 1;
  repeated float relearn_steps = 2;

  reserved 3 to 8;

  uint32 new_per_day = 9;
  uint32 reviews_per_day = 10;

  float initial_ease = 11;
  float easy_multiplier = 12;
  float hard_multiplier = 13;
  float lapse_multiplier = 14;
  float interval_multiplier = 15;

  uint32 maximum_review_interval = 16;
  uint32 minimum_review_interval = 17;

  uint32 graduating_interval_good = 18;
  uint32 graduating_interval_easy = 19;

  NewCardOrder new_card_order = 20;

  LeechAction leech_action = 21;
  uint32 leech_threshold = 22;

  bool disable_autoplay = 23;
  uint32 cap_answer_time_to_secs = 24;
  uint32 visible_timer_secs = 25;
  bool skip_question_when_replaying_answer = 26;

  bool bury_new = 27;
  bool bury_reviews = 28;

  bytes other = 255;
}

message DeckCommon {
  bool study_collapsed = 1;
  bool browser_collapsed = 2;

  uint32 last_day_studied = 3;
  int32 new_studied = 4;
  int32 review_studied = 5;
  int32 milliseconds_studied = 7;

  // previously set in the v1 scheduler,
  // but not currently used for anything
  int32 learning_studied = 6;

  bytes other = 255;
}

message DeckKind {
  oneof kind {
    NormalDeck normal = 1;
    FilteredDeck filtered = 2;
  }
}

message NormalDeck {
  int64 config_id = 1;
  uint32 extend_new = 2;
  uint32 extend_review = 3;
  string description = 4;
}

message FilteredDeck {
  bool reschedule = 1;
  repeated FilteredSearchTerm search_terms = 2;
  // v1 scheduler only
  repeated float delays = 3;
  // v2 scheduler only
  uint32 preview_delay = 4;
}

message FilteredSearchTerm {
  enum FilteredSearchOrder {
    FILTERED_SEARCH_ORDER_OLDEST_FIRST = 0;
    FILTERED_SEARCH_ORDER_RANDOM = 1;
    FILTERED_SEARCH_ORDER_INTERVALS_ASCENDING = 2;
    FILTERED_SEARCH_ORDER_INTERVALS_DESCENDING = 3;
    FILTERED_SEARCH_ORDER_LAPSES = 4;
    FILTERED_SEARCH_ORDER_ADDED = 5;
    FILTERED_SEARCH_ORDER_DUE = 6;
    FILTERED_SEARCH_ORDER_REVERSE_ADDED = 7;
    FILTERED_SEARCH_ORDER_DUE_PRIORITY = 8;
  }

  string search = 1;
  uint32 limit = 2;
  FilteredSearchOrder order = 3;
}

message NoteFieldConfig {
  bool sticky = 1;
  bool rtl = 2;
  string font_name = 3;
  uint32 font_size = 4;

  bytes other = 255;
}

message CardTemplateConfig {
  string q_format = 1;
  string a_format = 2;
  string q_format_browser = 3;
  string a_format_browser = 4;
  int64 target_deck_id = 5;
  string browser_font_name = 6;
  uint32 browser_font_size = 7;

  bytes other = 255;
}

message NoteTypeConfig {
  enum Kind {
    KIND_NORMAL = 0;
    KIND_CLOZE = 1;
  }
  Kind kind = 1;
  uint32 sort_field_idx = 2;
  string css = 3;
  int64 target_deck_id = 4;
  string latex_pre = 5;
  string latex_post = 6;
  bool latex_svg = 7;
  repeated CardRequirement reqs = 8;

  bytes other = 255;
}

message CardRequirement {
  enum Kind {
    KIND_NONE = 0;
    KIND_ANY = 1;
    KIND_ALL = 2;
  }
  uint32 card_ord = 1;
  Kind kind = 2;
  repeated uint32 field_ords = 3;
}

// Containers for passing around database objects
///////////////////////////////////////////////////////////

message Deck {
  int64 id = 1;
  string name = 2;
  uint32 mtime_secs = 3;
  int32 usn = 4;
  DeckCommon common = 5;
  oneof kind {
    NormalDeck normal = 6;
    FilteredDeck filtered = 7;
  }
}

message NoteType {
  int64 id = 1;
  string name = 2;
  uint32 mtime_secs = 3;
  sint32 usn = 4;
  NoteTypeConfig config = 7;
  repeated NoteField fields = 8;
  repeated CardTemplate templates = 9;
}

message NoteField {
  OptionalUInt32 ord = 1;
  string name = 2;
  NoteFieldConfig config = 5;
}

message CardTemplate {
  OptionalUInt32 ord = 1;
  string name = 2;
  uint32 mtime_secs = 3;
  sint32 usn = 4;
  CardTemplateConfig config = 5;
}

message Note {
  int64 id = 1;
  string guid = 2;
  int64 notetype_id = 3;
  uint32 mtime_secs = 4;
  int32 usn = 5;
  repeated string tags = 6;
  repeated string fields = 7;
}

message Card {
  int64 id = 1;
  int64 note_id = 2;
  int64 deck_id = 3;
  uint32 template_idx = 4;
  int64 mtime_secs = 5;
  sint32 usn = 6;
  uint32 ctype = 7;
  sint32 queue = 8;
  sint32 due = 9;
  uint32 interval = 10;
  uint32 ease_factor = 11;
  uint32 reps = 12;
  uint32 lapses = 13;
  uint32 remaining_steps = 14;
  sint32 original_due = 15;
  int64 original_deck_id = 16;
  uint32 flags = 17;
  string data = 18;
}

// Backend
///////////////////////////////////////////////////////////

message BackendInit {
  repeated string preferred_langs = 1;
  string locale_folder_path = 2;
  bool server = 3;
}

message I18nBackendInit {
  repeated string preferred_langs = 4;
  string locale_folder_path = 5;
}

// Errors
///////////////////////////////////////////////////////////

message BackendError {
  // localized error description suitable for displaying to the user
  string localized = 1;
  // error specifics
  oneof value {
    Empty invalid_input = 2;
    Empty template_parse = 3;
    Empty io_error = 4;
    Empty db_error = 5;
    NetworkError network_error = 6;
    SyncError sync_error = 7;
    // user interrupted operation
    Empty interrupted = 8;
    string json_error = 9;
    string proto_error = 10;
    Empty not_found_error = 11;
    Empty exists = 12;
    Empty deck_is_filtered = 13;
  }
}

message NetworkError {
  enum NetworkErrorKind {
    OTHER = 0;
    OFFLINE = 1;
    TIMEOUT = 2;
    PROXY_AUTH = 3;
  }
  NetworkErrorKind kind = 1;
}

message SyncError {
  enum SyncErrorKind {
    OTHER = 0;
    CONFLICT = 1;
    SERVER_ERROR = 2;
    CLIENT_TOO_OLD = 3;
    AUTH_FAILED = 4;
    SERVER_MESSAGE = 5;
    MEDIA_CHECK_REQUIRED = 6;
    RESYNC_REQUIRED = 7;
    CLOCK_INCORRECT = 8;
    DATABASE_CHECK_REQUIRED = 9;
  }
  SyncErrorKind kind = 1;
}

// Progress
///////////////////////////////////////////////////////////

message Progress {
  oneof value {
    Empty none = 1;
    MediaSyncProgress media_sync = 2;
    string media_check = 3;
    FullSyncProgress full_sync = 4;
    NormalSyncProgress normal_sync = 5;
    DatabaseCheckProgress database_check = 6;
  }
}

message MediaSyncProgress {
  string checked = 1;
  string added = 2;
  string removed = 3;
}

message FullSyncProgress {
  uint32 transferred = 1;
  uint32 total = 2;
}

message MediaSyncUploadProgress {
  uint32 files = 1;
  uint32 deletions = 2;
}

message NormalSyncProgress {
  string stage = 1;
  string added = 2;
  string removed = 3;
}

message DatabaseCheckProgress {
  string stage = 1;
  uint32 stage_total = 2;
  uint32 stage_current = 3;
}

// Messages
///////////////////////////////////////////////////////////

message SchedTimingTodayOut {
  uint32 days_elapsed = 1;
  int64 next_day_at = 2;
}

message DeckTreeIn {
  // if non-zero, counts for the provided timestamp will be included
  int64 now = 1;
  int64 top_deck_id = 2;
}

message DeckTreeNode {
  int64 deck_id = 1;
  string name = 2;
  repeated DeckTreeNode children = 3;
  uint32 level = 4;
  bool collapsed = 5;

  uint32 review_count = 6;
  uint32 learn_count = 7;
  uint32 new_count = 8;

  bool filtered = 16;
}

message RenderExistingCardIn {
  int64 card_id = 1;
  bool browser = 2;
}

message RenderUncommittedCardIn {
  Note note = 1;
  uint32 card_ord = 2;
  bytes template = 3;
  bool fill_empty = 4;
}

message RenderCardOut {
  repeated RenderedTemplateNode question_nodes = 1;
  repeated RenderedTemplateNode answer_nodes = 2;
}

message RenderedTemplateNode {
  oneof value {
    string text = 1;
    RenderedTemplateReplacement replacement = 2;
  }
}

message RenderedTemplateReplacement {
  string field_name = 1;
  string current_text = 2;
  repeated string filters = 3;
}

message ExtractAVTagsIn {
  string text = 1;
  bool question_side = 2;
}

message ExtractAVTagsOut {
  string text = 1;
  repeated AVTag av_tags = 2;
}

message AVTag {
  oneof value {
    string sound_or_video = 1;
    TTSTag tts = 2;
  }
}

message TTSTag {
  string field_text = 1;
  string lang = 2;
  repeated string voices = 3;
  float speed = 4;
  repeated string other_args = 5;
}

message ExtractLatexIn {
  string text = 1;
  bool svg = 2;
  bool expand_clozes = 3;
}

message ExtractLatexOut {
  string text = 1;
  repeated ExtractedLatex latex = 2;
}

message ExtractedLatex {
  string filename = 1;
  string latex_body = 2;
}

message AddMediaFileIn {
  string desired_name = 1;
  bytes data = 2;
}

message CheckMediaOut {
  repeated string unused = 1;
  repeated string missing = 2;
  string report = 3;
  bool have_trash = 4;
}

message TrashMediaFilesIn {
  repeated string fnames = 1;
}

message TranslateStringIn {
  int32 key = 2;
  map<string, TranslateArgValue> args = 3;
}

message TranslateArgValue {
  oneof value {
    string str = 1;
    double number = 2;
  }
}

message FormatTimespanIn {
  enum Context {
    PRECISE = 0;
    ANSWER_BUTTONS = 1;
    INTERVALS = 2;
  }

  float seconds = 1;
  Context context = 2;
}

message StudiedTodayMessageIn {
  uint32 cards = 1;
  double seconds = 2;
}

message CongratsLearnMessageIn {
  float next_due = 1;
  uint32 remaining = 2;
}

message OpenCollectionIn {
  string collection_path = 1;
  string media_folder_path = 2;
  string media_db_path = 3;
  string log_path = 4;
}

message SearchCardsIn {
  string search = 1;
  SortOrder order = 2;
}

message SearchCardsOut {
  repeated int64 card_ids = 1;
}

message SortOrder {
  oneof value {
    Empty from_config = 1;
    Empty none = 2;
    string custom = 3;
    BuiltinSearchOrder builtin = 4;
  }
}

message SearchNotesIn {
  string search = 1;
}

message SearchNotesOut {
  repeated int64 note_ids = 2;
}

message BuiltinSearchOrder {
  enum BuiltinSortKind {
    NOTE_CREATION = 0;
    NOTE_MOD = 1;
    NOTE_FIELD = 2;
    NOTE_TAGS = 3;
    NOTE_TYPE = 4;
    CARD_MOD = 5;
    CARD_REPS = 6;
    CARD_DUE = 7;
    CARD_EASE = 8;
    CARD_LAPSES = 9;
    CARD_INTERVAL = 10;
    CARD_DECK = 11;
    CARD_TEMPLATE = 12;
  }
  BuiltinSortKind kind = 1;
  bool reverse = 2;
}

message ConcatenateSearchesIn {
  enum Separator {
    AND = 0;
    OR = 1;
  }
  Separator sep = 1;
  repeated string searches = 2;
}

message ReplaceSearchTermIn {
  string search = 1;
  string replacement = 2;
}

message CloseCollectionIn {
  bool downgrade_to_schema11 = 1;
}

message AddOrUpdateDeckConfigLegacyIn {
  bytes config = 1;
  bool preserve_usn_and_mtime = 2;
}

message RegisterTagsIn {
  string tags = 1;
  bool preserve_usn = 2;
  int32 usn = 3;
  bool clear_first = 4;
}

message AllTagsOut {
  repeated Tag tags = 1;
}

message SetTagCollapsedIn {
  string name = 1;
  bool collapsed = 2;
}

message TagConfig {
  bool browser_collapsed = 1;
}

message Tag {
  int64 id = 1;
  string name = 2;
  sint32 usn = 3;
  TagConfig config = 4;
}

message GetChangedTagsOut {
  repeated string tags = 1;
}

message TagTreeNode {
  int64 tag_id = 1;
  string name = 2;
  repeated TagTreeNode children = 3;
  uint32 level = 5;
  bool collapsed = 4;
}

message SetConfigJsonIn {
  string key = 1;
  bytes value_json = 2;
}

enum StockNoteType {
  STOCK_NOTE_TYPE_BASIC = 0;
  STOCK_NOTE_TYPE_BASIC_AND_REVERSED = 1;
  STOCK_NOTE_TYPE_BASIC_OPTIONAL_REVERSED = 2;
  STOCK_NOTE_TYPE_BASIC_TYPING = 3;
  STOCK_NOTE_TYPE_CLOZE = 4;
}

message GetStockNotetypeIn {
  StockNoteType kind = 1;
}

message NoteTypeNames {
  repeated NoteTypeNameID entries = 1;
}

message NoteTypeUseCounts {
  repeated NoteTypeNameIDUseCount entries = 1;
}

message NoteTypeNameID {
  int64 id = 1;
  string name = 2;
}

message NoteTypeNameIDUseCount {
  int64 id = 1;
  string name = 2;
  uint32 use_count = 3;
}

message AddOrUpdateNotetypeIn {
  bytes json = 1;
  bool preserve_usn_and_mtime = 2;
}

message AddNoteIn {
  Note note = 1;
  int64 deck_id = 2;
}

message EmptyCardsReport {
  string report = 1;
  repeated NoteWithEmptyCards notes = 2;
}

message NoteWithEmptyCards {
  int64 note_id = 1;
  repeated int64 card_ids = 2;
  bool will_delete_note = 3;
}

message DeckNames {
  repeated DeckNameID entries = 1;
}

message DeckNameID {
  int64 id = 1;
  string name = 2;
}

message AddOrUpdateDeckLegacyIn {
  bytes deck = 1;
  bool preserve_usn_and_mtime = 2;
}

message FieldNamesForNotesIn {
  repeated int64 nids = 1;
}

message FieldNamesForNotesOut {
  repeated string fields = 1;
}

message FindAndReplaceIn {
  repeated int64 nids = 1;
  string search = 2;
  string replacement = 3;
  bool regex = 4;
  bool match_case = 5;
  string field_name = 6;
}

message AfterNoteUpdatesIn {
  repeated int64 nids = 1;
  bool mark_notes_modified = 2;
  bool generate_cards = 3;
}

message AddNoteTagsIn {
  repeated int64 nids = 1;
  string tags = 2;
}

message UpdateNoteTagsIn {
  repeated int64 nids = 1;
  string tags = 2;
  string replacement = 3;
  bool regex = 4;
}

message GetNoteTagsIn {
  repeated int64 nids = 1;
}

message GetNoteTagsOut {
  repeated string tags = 1;
}

message CheckDatabaseOut {
  repeated string problems = 1;
}

message CollectionSchedulingSettings {
  enum NewReviewMix {
    DISTRIBUTE = 0;
    REVIEWS_FIRST = 1;
    NEW_FIRST = 2;
  }

  uint32 scheduler_version = 1;
  uint32 rollover = 2;
  uint32 learn_ahead_secs = 3;
  NewReviewMix new_review_mix = 4;
  bool show_remaining_due_counts = 5;
  bool show_intervals_on_buttons = 6;
  uint32 time_limit_secs = 7;

  // v2 only
  bool new_timezone = 8;
  bool day_learn_first = 9;
}

message Preferences {
  CollectionSchedulingSettings sched = 1;
}

message ClozeNumbersInNoteOut {
  repeated uint32 numbers = 1;
}

message GetDeckNamesIn {
  bool skip_empty_default = 1;
  // if unset, implies skip_empty_default
  bool include_filtered = 2;
}

message NoteIsDuplicateOrEmptyOut {
  enum State {
    NORMAL = 0;
    EMPTY = 1;
    DUPLICATE = 2;
  }
  State state = 1;
}

message SyncLoginIn {
  string username = 1;
  string password = 2;
}

message SyncStatusOut {
  enum Required {
    NO_CHANGES = 0;
    NORMAL_SYNC = 1;
    FULL_SYNC = 2;
  }
  Required required = 1;
}

message SyncCollectionOut {
  enum ChangesRequired {
    NO_CHANGES = 0;
    NORMAL_SYNC = 1;
    FULL_SYNC = 2;
    // local collection has no cards; upload not an option
    FULL_DOWNLOAD = 3;
    // remote collection has no cards; download not an option
    FULL_UPLOAD = 4;
  }

  uint32 host_number = 1;
  string server_message = 2;
  ChangesRequired required = 3;
}

message SyncAuth {
  string hkey = 1;
  uint32 host_number = 2;
}

message RemoveNotesIn {
  repeated int64 note_ids = 1;
  repeated int64 card_ids = 2;
}

message RemoveCardsIn {
  repeated int64 card_ids = 1;
}

message UpdateStatsIn {
  int64 deck_id = 1;
  int32 new_delta = 2;
  int32 review_delta = 4;
  int32 millisecond_delta = 5;
}

message ExtendLimitsIn {
  int64 deck_id = 1;
  int32 new_delta = 2;
  int32 review_delta = 3;
}

message CountsForDeckTodayOut {
  int32 new = 1;
  int32 review = 2;
}

message GraphsIn {
  string search = 1;
  uint32 days = 2;
}

message GraphsOut {
  repeated Card cards = 1;
  repeated RevlogEntry revlog = 2;
  uint32 days_elapsed = 3;
  // Based on rollover hour
  uint32 next_day_at_secs = 4;
  uint32 scheduler_version = 5;
  /// Seconds to add to UTC timestamps to get local time.
  int32 local_offset_secs = 7;
}

message RevlogEntry {
  enum ReviewKind {
    LEARNING = 0;
    REVIEW = 1;
    RELEARNING = 2;
    EARLY_REVIEW = 3;
    MANUAL = 4;
  }
  int64 id = 1;
  int64 cid = 2;
  int32 usn = 3;
  uint32 button_chosen = 4;
  int32 interval = 5;
  int32 last_interval = 6;
  uint32 ease_factor = 7;
  uint32 taken_millis = 8;
  ReviewKind review_kind = 9;
}

message CongratsInfoOut {
  uint32 learn_remaining = 1;
  uint32 secs_until_next_learn = 2;
  bool review_remaining = 3;
  bool new_remaining = 4;
  bool have_sched_buried = 5;
  bool have_user_buried = 6;
  bool is_filtered_deck = 7;
  bool bridge_commands_supported = 8;
}

message UnburyCardsInCurrentDeckIn {
  enum Mode {
    ALL = 0;
    SCHED_ONLY = 1;
    USER_ONLY = 2;
  }
  Mode mode = 1;
}

message BuryOrSuspendCardsIn {
  enum Mode {
    SUSPEND = 0;
    BURY_SCHED = 1;
    BURY_USER = 2;
  }
  repeated int64 card_ids = 1;
  Mode mode = 2;
}

message ScheduleCardsAsReviewsIn {
  repeated int64 card_ids = 1;
  uint32 min_interval = 2;
  uint32 max_interval = 3;
}

message ScheduleCardsAsNewIn {
  repeated int64 card_ids = 1;
  bool log = 2;
}

message SortCardsIn {
  repeated int64 card_ids = 1;
  uint32 starting_from = 2;
  uint32 step_size = 3;
  bool randomize = 4;
  bool shift_existing = 5;
}

message SortDeckIn {
  int64 deck_id = 1;
  bool randomize = 2;
}

message SetDeckIn {
  repeated int64 card_ids = 1;
  int64 deck_id = 2;
}