WIP: tempoaray DB implementation.
This commit is contained in:
parent
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commit
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@ -1,4 +1,4 @@
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import std/json, std/jsonutils, std/os, std/strtabs, std/tables, std/times
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import std/[logging, json, jsonutils, options, os, tables, times]
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import timeutils, uuids, zero_functional
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import ./models
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@ -10,7 +10,7 @@ type
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bookmarks: TableRef[UUID, Bookmark]
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mediaFiles: TableRef[UUID, MediaFile]
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playlists: TableRef[UUID, Playlist]
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tags: StringTableRef
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tags: TableRef[string, Option[string]]
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albumsToMediaFiles: TableRef[UUID, seq[UUID]]
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artistsToMediaFiles: TableRef[UUID, seq[UUID]]
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@ -18,128 +18,390 @@ type
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playlistsToMediaFiles: TableRef[UUID, seq[UUID]]
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tagsAndMediaFiles: seq[tuple[tagName: string, mediaFileId: UUID]]
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mediaFileHashToId: TableRef[string, UUID]
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WdiwtltDb* = ref object
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jsonFilePath: string
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root: DbRoot
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## API Contract
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proc debug*(db: WdiwtltDb): string =
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"\p\talbums: " & $db.root.albums &
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"\p\tartists: " & $db.root.artists &
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"\p\tbookmarks: " & $db.root.bookmarks &
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"\p\tmediaFiles: " & $db.root.mediaFiles &
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"\p\tplaylists: " & $db.root.playlists &
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"\p\ttags: " & $db.root.tags &
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"\p\talbumsToMediaFiles: " & $db.root.albumsToMediaFiles &
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"\p\tartistsToMediaFiles: " & $db.root.artistsToMediaFiles &
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"\p\tartistsAndAlbums: " & $db.root.artistsAndAlbums &
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"\p\tplaylistsToMediaFiles: " & $db.root.playlistsToMediaFiles &
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"\p\ttagsAndMediaFiles: " & $db.root.tagsAndMediaFiles &
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"\p\tmediaFileHashToId: " & $db.root.mediaFileHashToId & "\p"
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## ========================================================================= ##
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## API Contract ##
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## ========================================================================= ##
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proc initDb*(path: string): WdiwtltDb;
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proc loadDb*(path: string): WdiwtltDb;
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proc persist*(db: WdiwtltDb): void;
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proc delete*(db: WdiwtltDb, a: Album);
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proc delete*(db: WdiwtltDb, a: Artist);
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proc delete*(db: WdiwtltDb, b: Bookmark);
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proc delete*(db: WdiwtltDb, mf: MediaFile);
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proc delete*(db: WdiwtltDb, p: Playlist);
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proc delete*(db: WdiwtltDb, t: Tag);
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## Albums
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## --------------------
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proc add*(db: WdiwtltDb, a: Album);
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proc remove*(db: WdiwtltDb, a: Album);
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proc update*(db: WdiwtltDb, a: Album);
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proc findAlbumsByArtist*(db: WdiwtltDb, a: Artist): seq[Album];
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proc findAlbumsByName*(db: WdiwtltDb, name: string): seq[Album];
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proc add*(db: WdiwtltDb, a: Album, mf: MediaFile);
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proc remove*(db: WdiwtltDb, a: Album, mf: MediaFile);
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proc remove*(db: WdiwtltDb, a: Artist, mf: MediaFile);
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proc remove*(db: WdiwtltDb, artist: Artist, album: Album);
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## Artists
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## --------------------
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proc add*(db: WdiwtltDb, a: Artist);
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proc remove*(db: WdiwtltDb, a: Artist);
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proc update*(db: WdiwtltDb, a: Artist);
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proc findArtistsByAlbum*(db: WdiwtltDb, a: Album): seq[Artist];
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proc findArtistsByName*(db: WdiwtltDb, name: string): seq[Artist];
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proc add*(db: WdiwtltDb, a: Artist, mf: MediaFile);
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proc remove*(db: WdiwtltDb, a: Artist, mf: MediaFile);
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proc isAssociated*(db: WdiwtltDb, artist: Artist, album: Album): bool;
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proc associate*(db: WdiwtltDb, artist: Artist, album: Album);
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proc disassociate*(db: WdiwtltDb, artist: Artist, album: Album);
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## Bookmarks
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## --------------------
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proc add*(db: WdiwtltDb, b: Bookmark);
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proc update*(db: WdiwtltDb, b: Bookmark);
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proc remove*(db: WdiwtltDb, b: Bookmark);
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## Media Files
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## --------------------
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proc add*(db: WdiwtltDb, mf: MediaFile);
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proc remove*(db: WdiwtltDb, mf: MediaFile);
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proc update*(db: WdiwtltDb, mf: MediaFile);
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proc findMediaFilesByAlbum*(db: WdiwtltDb, a: Album): seq[MediaFile];
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proc findMediaFilesByArtist*(db: WdiwtltDb, a: Artist): seq[MediaFile];
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proc findMediaFileByHash*(db: WdiwtltDb, hash: string): Option[MediaFile];
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## Playlists
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## --------------------
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proc add*(db: WdiwtltDb, p: Playlist);
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proc remove*(db: WdiwtltDb, p: Playlist);
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proc update*(db: WdiwtltDb, p: Playlist);
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## Tags
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## --------------------
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proc add*(db: WdiwtltDb, t: Tag);
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proc remove*(db: WdiwtltDb, t: Tag);
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proc update*(db: WdiwtltDb, t: Tag);
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## Housekeeping
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## --------------------
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proc pruneStalePlaylists*(db: WdiwtltDb, ts: DateTime);
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proc pruneStaleBookmarks*(db: WdiwtltDb, ts: DateTime);
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proc removeEmptyAlbums*(db: WdiwtltDb): void;
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proc removeEmptyArtists*(db: WdiwtltDb): void;
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proc removeEmptyPlaylists*(db: WdiwtltDb): void;
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proc toJsonHook(t: TableRef[UUID, Album]): JsonNode;
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proc fromJsonHook(t: var TableRef[UUID, Album], n: JsonNode);
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proc toJsonHook(t: TableRef[UUID, Artist]): JsonNode;
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proc fromJsonHook(t: var TableRef[UUID, Artist], n: JsonNode);
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proc toJsonHook(t: TableRef[UUID, Bookmark]): JsonNode;
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proc fromJsonHook(t: var TableRef[UUID, Bookmark], n: JsonNode);
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proc toJsonHook(t: TableRef[UUID, MediaFile]): JsonNode;
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proc fromJsonHook(t: var TableRef[UUID, MediaFile], n: JsonNode);
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proc toJsonHook(t: TableRef[UUID, Playlist]): JsonNode;
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proc fromJsonHook(t: var TableRef[UUID, Playlist], n: JsonNode);
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proc toJsonHook(t: TableRef[UUID, seq[UUID]]): JsonNode;
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proc fromJsonHook(t: var TableRef[UUID, seq[UUID]], n: JsonNode);
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proc toJsonHook(uuid: UUID): JsonNode;
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proc fromJsonHook(u: var UUID, node: JsonNode);
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proc toJsonHook(dt: DateTime): JsonNode;
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proc fromJsonHook(dt: var DateTime, node: JsonNode);
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## ========================================================================= ##
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## API Implementation ##
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## ========================================================================= ##
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## Internals
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## --------------------
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proc toJsonHook(t: TableRef[UUID, Album]): JsonNode =
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result = newJObject()
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for k, v in t.pairs: result[$k] = toJson(v)
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proc fromJsonHook(t: var TableRef[UUID, Album], n: JsonNode) =
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for k in n.keys:
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var a: Album
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fromJson(a, n[k])
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t[parseUUID(k)] = a
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proc toJsonHook(t: TableRef[UUID, Artist]): JsonNode =
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result = newJObject()
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for k, v in t.pairs: result[$k] = toJson(v)
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proc fromJsonHook(t: var TableRef[UUID, Artist], n: JsonNode) =
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for k in n.keys:
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var a: Artist
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fromJson(a, n[k])
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t[parseUUID(k)] = a
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proc toJsonHook(t: TableRef[UUID, Bookmark]): JsonNode =
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result = newJObject()
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for k, v in t.pairs: result[$k] = toJson(v)
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proc fromJsonHook(t: var TableRef[UUID, Bookmark], n: JsonNode) =
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for k in n.keys:
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var b: Bookmark
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fromJson(b, n[k])
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t[parseUUID(k)] = b
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proc toJsonHook(t: TableRef[UUID, MediaFile]): JsonNode =
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result = newJObject()
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for k, v in t.pairs: result[$k] = toJson(v)
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proc fromJsonHook(t: var TableRef[UUID, MediaFile], n: JsonNode) =
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for k in n.keys:
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var mf: MediaFile
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fromJson(mf, n[k])
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t[parseUUID(k)] = mf
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proc toJsonHook(t: TableRef[UUID, Playlist]): JsonNode =
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result = newJObject()
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for k, v in t.pairs: result[$k] = toJson(v)
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proc fromJsonHook(t: var TableRef[UUID, Playlist], n: JsonNode) =
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for k in n.keys:
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var p: Playlist
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fromJson(p, n[k])
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t[parseUUID(k)] = p
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proc toJsonHook(t: TableRef[UUID, seq[UUID]]): JsonNode =
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result = newJObject()
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for k, v in t.pairs: result[$k] = toJson(v)
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proc fromJsonHook(t: var TableRef[UUID, seq[UUID]], n: JsonNode) =
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for k in n.keys:
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var s: seq[UUID]
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fromJson(s, n[k])
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t[parseUUID(k)] = s
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proc toJsonHook(uuid: UUID): JsonNode = %($uuid)
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proc fromJsonHook(u: var UUID,node: JsonNode) =
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proc fromJsonHook(u: var UUID, node: JsonNode) =
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u = parseUUID(node.getStr)
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proc toJsonHook(dt: DateTime): JsonNode = %(dt.formatIso8601)
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proc fromJsonHook(dt: var DateTime, node: JsonNode) =
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dt = parseIso8601(node.getStr)
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## API Implementation
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proc initDbRoot(): DbRoot =
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DbRoot(
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albums: newTable[UUID, Album](),
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artists: newTable[UUID, Artist](),
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bookmarks: newTable[UUID, Bookmark](),
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mediaFiles: newTable[UUID, MediaFile](),
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playlists: newTable[UUID, Playlist](),
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tags: newTable[string, Option[string]](),
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albumsToMediaFiles: newTable[UUID, seq[UUID]](),
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artistsToMediaFiles: newTable[UUID, seq[UUID]](),
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artistsAndAlbums: @[],
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playlistsToMediaFiles: newTable[UUID, seq[UUID]](),
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tagsAndMediaFiles: @[],
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mediaFileHashToId: newTable[string, UUID]())
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proc initDb*(path: string): WdiwtltDb =
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WdiwtltDb(
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jsonFilePath: path,
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root: DbRoot(
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albums: newTable[UUID, Album](),
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artists: newTable[UUID, Artist](),
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bookmarks: newTable[UUID, Bookmark](),
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mediaFiles: newTable[UUID, MediaFile](),
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playlists: newTable[UUID, Playlist](),
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tags: newStringTable(),
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albumsToMediaFiles: newTable[UUID, seq[UUID]](),
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artistsToMediaFiles: newTable[UUID, seq[UUID]](),
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artistsAndAlbums: @[],
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playlistsToMediaFiles: newTable[UUID, seq[UUID]](),
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tagsAndMediaFiles: @[]
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))
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root: initDbRoot())
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proc loadDb*(path: string): WdiwtltDb =
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if not fileExists(path):
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raise newException(Exception, "Unable to open database file '" & path & "'")
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let jsonRoot = parseJson(path)
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var root: DbRoot
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let jsonRoot = parseJson(path.readFile)
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var root: DbRoot = initDbRoot()
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root.fromJson(jsonRoot)
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debug "loaded DB"
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result = WdiwtltDb(
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jsonFilePath: path,
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root: root)
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debug result.debug
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proc persist*(db: WdiwtltDb): void =
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let jsonRoot = db.root.toJson
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db.jsonFilePath.writeFile($jsonRoot)
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proc delete*(db: WdiwtltDb, a: Album) =
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## Albums
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## --------------------
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proc add*(db: WdiwtltDb, a: Album) = db.root.albums[a.id] = a
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proc remove*(db: WdiwtltDb, a: Album) =
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db.root.albums.del(a.id)
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db.root.albumsToMediaFiles.del(a.id)
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db.root.artistsAndAlbums =
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db.root.artistsAndAlbums --> filter(it.albumId != a.id)
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proc delete*(db: WdiwtltDb, a: Artist) =
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proc update*(db: WdiwtltDb, a: Album) = db.add(a)
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proc findAlbumsByArtist*(db: WdiwtltDb, a: Artist): seq[Album] =
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db.root.artistsAndAlbums -->
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filter(it.artistId == a.id and db.root.artists.contains(a.id)).
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map(db.root.albums[it.albumId])
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proc findAlbumsByName*(db: WdiwtltDb, name: string): seq[Album] =
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result = @[]
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for a in db.root.albums.values:
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if a.name == name: result.add(a)
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proc add*(db: WdiwtltDb, a: Album, mf: MediaFile) =
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if not db.root.albumsToMediaFiles.contains(a.id):
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db.root.albumsToMediaFiles[a.id] = @[mf.id]
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else:
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let idsInAlbum = db.root.albumsToMediaFiles[a.id]
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if not idsInAlbum.contains(mf.id):
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db.root.albumsToMediaFiles[a.id].add(mf.id)
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proc remove*(db: WdiwtltDb, a: Album, mf: MediaFile) =
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if db.root.albumsToMediaFiles.contains(a.id):
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db.root.albumsToMediaFiles[a.id] =
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db.root.albumsToMediaFiles[a.id] --> filter(it != mf.id)
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## Artists
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## --------------------
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proc add*(db: WdiwtltDb, a: Artist) = db.root.artists[a.id] = a
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proc remove*(db: WdiwtltDb, a: Artist) =
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db.root.artists.del(a.id)
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db.root.artistsToMediaFiles.del(a.id)
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db.root.artistsAndAlbums =
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db.root.artistsAndAlbums --> filter(it.artistId != a.id)
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proc delete*(db: WdiwtltDb, b: Bookmark) = db.root.bookmarks.del(b.id)
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proc update*(db: WdiwtltDb, a: Artist) = db.add(a)
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proc delete*(db: WdiwtltDb, mf: MediaFile) =
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proc findArtistsByAlbum*(db: WdiwtltDb, a: Album): seq[Artist] =
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db.root.artistsAndAlbums -->
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filter(it.albumId == a.id and db.root.albums.contains(a.id)).
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map(db.root.artists[it.artistId])
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proc findArtistsByName*(db: WdiwtltDb, name: string): seq[Artist] =
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result = @[]
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for a in db.root.artists.values:
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if a.name == name: result.add(a)
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proc add*(db: WdiwtltDb, a: Artist, mf: MediaFile) =
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if not db.root.artistsToMediaFiles.contains(a.id):
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db.root.artistsToMediaFiles[a.id] = @[mf.id]
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else:
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let idsInArtist = db.root.artistsToMediaFiles[a.id]
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if not idsInArtist.contains(mf.id):
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db.root.artistsToMediaFiles[a.id].add(mf.id)
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proc remove*(db: WdiwtltDb, a: Artist, mf: MediaFile) =
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if db.root.artistsToMediaFiles.contains(a.id):
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db.root.artistsToMediaFiles[a.id] =
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db.root.artistsToMediaFiles[a.id] --> filter(it != mf.id)
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proc isAssociated*(
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db: WdiwtltDb,
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artist: Artist,
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album: Album
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): bool =
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let matching = db.root.artistsAndAlbums -->
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filter(it.artistId == artist.id and it.albumId == album.id)
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return matching.len > 0
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proc associate*(db: WdiwtltDb, artist: Artist, album: Album) =
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if not db.isAssociated(artist, album):
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db.root.artistsAndAlbums.add((artist.id, album.id))
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proc disassociate*(db: WdiwtltDb, artist: Artist, album: Album) =
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db.root.artistsAndAlbums = db.root.artistsAndAlbums -->
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filter(it.albumId != album.id or it.artistId != artist.id)
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## Bookmarks
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## --------------------
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proc add*(db: WdiwtltDb, b: Bookmark) = db.root.bookmarks[b.id] = b
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proc remove*(db: WdiwtltDb, b: Bookmark) = db.root.bookmarks.del(b.id)
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proc update*(db: WdiwtltDb, b: Bookmark) = db.add(b)
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## Media Files
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## --------------------
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proc add*(db: WdiwtltDb, mf: MediaFile) =
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db.root.mediaFiles[mf.id] = mf
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db.root.mediaFileHashToId[mf.fileHash] = mf.id
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proc remove*(db: WdiwtltDb, mf: MediaFile) =
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db.root.mediaFiles.del(mf.id)
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for albumId, mfIds in db.root.albumsToMediaFiles.pairs:
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if mfIds.contains(mf.id):
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db.remove(db.root.albums[albumId], mf)
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proc delete*(db: WdiwtltDb, p: Playlist) =
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db.root.mediaFileHashToId.del(mf.fileHash)
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proc update*(db: WdiwtltDb, mf: MediaFile) = db.add(mf)
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proc findMediaFilesByAlbum*(db: WdiwtltDb, a: Album): seq[MediaFile] =
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result = @[]
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if db.root.albumsToMediaFiles.contains(a.id):
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return db.root.albumsToMediaFiles[a.id] -->
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filter(db.root.mediaFiles.contains(it)).
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map(db.root.mediaFiles[it])
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proc findMediaFilesByArtist*(db: WdiwtltDb, a: Artist): seq[MediaFile] =
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result = @[]
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if db.root.artistsToMediaFiles.contains(a.id):
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return db.root.artistsToMediaFiles[a.id] -->
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filter(db.root.mediaFiles.contains(it)).
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map(db.root.mediaFiles[it])
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proc findMediaFileByHash*(db: WdiwtltDb, hash: string): Option[MediaFile] =
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if db.root.mediaFileHashToId.contains(hash):
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let mfId = db.root.mediaFileHashToId[hash]
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if db.root.mediaFiles.contains(mfId):
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return some(db.root.mediaFiles[mfId])
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return none[MediaFile]()
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## Playlists
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## --------------------
|
||||
proc add*(db: WdiwtltDb, p: Playlist) = db.root.playlists[p.id] = p
|
||||
|
||||
proc remove*(db: WdiwtltDb, p: Playlist) =
|
||||
db.root.playlists.del(p.id)
|
||||
db.root.playlistsToMediaFiles.del(p.id)
|
||||
for b in db.root.bookmarks.values:
|
||||
if b.playlistId == p.id: db.delete(b)
|
||||
if b.playlistId == p.id: db.remove(b)
|
||||
|
||||
proc delete*(db: WdiwtltDb, t: Tag) =
|
||||
proc update*(db: WdiwtltDb, p: Playlist) = db.add(p)
|
||||
|
||||
## Tags
|
||||
## --------------------
|
||||
proc add*(db: WdiwtltDb, t: Tag) = db.root.tags[t.name] = t.description
|
||||
|
||||
proc remove*(db: WdiwtltDb, t: Tag) =
|
||||
db.root.tags.del(t.name)
|
||||
db.root.tagsAndMediaFiles = db.root.tagsAndMediaFiles -->
|
||||
filter(it.tagName != t.name)
|
||||
|
||||
proc remove*(db: WdiwtltDb, a: Album, mf: MediaFile) =
|
||||
db.root.albumsToMediaFiles[a.id] =
|
||||
db.root.albumsToMediaFiles[a.id] -->
|
||||
filter(it != mf.id)
|
||||
|
||||
proc remove*(db: WdiwtltDb, a: Artist, mf: MediaFile) =
|
||||
db.root.artistsToMediaFiles[a.id] =
|
||||
db.root.artistsToMediaFiles[a.id] -->
|
||||
filter(it != mf.id)
|
||||
|
||||
proc remove*(db: WdiwtltDb, artist: Artist, album: Album) =
|
||||
db.root.artistsAndAlbums = db.root.artistsAndAlbums -->
|
||||
filter(it.albumId != album.id or it.artistId != artist.id)
|
||||
proc update*(db: WdiwtltDb, t: Tag) = db.add(t)
|
||||
|
||||
## Housekeeping
|
||||
## --------------------
|
||||
proc pruneStalePlaylists*(db: WdiwtltDb, ts: DateTime) =
|
||||
db.root.playlists.values -->
|
||||
filter(it.lastUsed > ts).foreach(db.delete(it))
|
||||
filter(it.lastUsed > ts).foreach(db.remove(it))
|
||||
|
||||
proc pruneStaleBookmarks*(db: WdiwtltDb, ts: DateTime) =
|
||||
db.root.bookmarks.values -->
|
||||
filter(it.lastUsed > ts).foreach(db.delete(it))
|
||||
filter(it.lastUsed > ts).foreach(db.remove(it))
|
||||
|
||||
proc removeEmptyAlbums*(db: WdiwtltDb): void =
|
||||
let emptyAlbumIds = db.root.albumsToMediaFiles.pairs -->
|
||||
|
||||
Loading…
Reference in New Issue
Block a user