cbc85407df
Setting local data on Chrome is not throttled, only debounce sync. Don't make DBs save data on every page load, don't save cleaning operations if nothing's changed. Debounce Unread.saveLastReadPost() on Chrome to every 5 seconds.
90 lines
2.7 KiB
CoffeeScript
90 lines
2.7 KiB
CoffeeScript
class DataBoard
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@keys = ['pinnedThreads', 'hiddenThreads', 'hiddenPosts', 'lastReadPosts', 'yourPosts', 'watchedThreads']
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constructor: (@key, sync, dontClean) ->
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@data = Conf[key]
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$.sync key, @onSync
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@clean() unless dontClean
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return unless sync
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# Chrome also fires the onChanged callback on the current tab,
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# so we only start syncing when we're ready.
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init = =>
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$.off d, '4chanXInitFinished', init
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@sync = sync
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$.on d, '4chanXInitFinished', init
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save: ->
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$.set @key, @data
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delete: ({boardID, threadID, postID}) ->
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if postID
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delete @data.boards[boardID][threadID][postID]
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@deleteIfEmpty {boardID, threadID}
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else if threadID
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delete @data.boards[boardID][threadID]
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@deleteIfEmpty {boardID}
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else
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delete @data.boards[boardID]
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@save()
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deleteIfEmpty: ({boardID, threadID}) ->
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if threadID
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unless Object.keys(@data.boards[boardID][threadID]).length
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delete @data.boards[boardID][threadID]
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@deleteIfEmpty {boardID}
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else unless Object.keys(@data.boards[boardID]).length
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delete @data.boards[boardID]
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set: ({boardID, threadID, postID, val}) ->
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if postID isnt undefined
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((@data.boards[boardID] or= {})[threadID] or= {})[postID] = val
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else if threadID isnt undefined
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(@data.boards[boardID] or= {})[threadID] = val
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else
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@data.boards[boardID] = val
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@save()
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get: ({boardID, threadID, postID, defaultValue}) ->
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if board = @data.boards[boardID]
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unless threadID
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if postID
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for ID, thread in board
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if postID of thread
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val = thread[postID]
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break
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else
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val = board
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else if thread = board[threadID]
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val = if postID
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thread[postID]
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else
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thread
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val or defaultValue
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clean: ->
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now = Date.now()
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return if (@data.lastChecked or 0) > now - 2 * $.HOUR
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for boardID of @data.boards
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@deleteIfEmpty {boardID}
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@ajaxClean boardID if boardID of @data.boards
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@data.lastChecked = now
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@save()
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ajaxClean: (boardID) ->
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$.cache "//a.4cdn.org/#{boardID}/threads.json", (e) =>
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if e.target.status isnt 200
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@delete {boardID} if e.target.status is 404
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return
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board = @data.boards[boardID]
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threads = {}
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for page in e.target.response
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for thread in page.threads when thread.no of board
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threads[thread.no] = board[thread.no]
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count = Object.keys(threads).length
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return if count is Object.keys(board).length # Nothing changed.
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if count
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@set {boardID, val: threads}
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else
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@delete {boardID}
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onSync: (data) =>
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@data = data or boards: {}
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@sync?()
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