local fs = require("filesystem")

local dirs = fs.directory("/Users/kinch/Desktop/Rebuild World")

local FileTree = {foo = "bar"}
function FileTree:new(iterator)
    local file_tree = {
        iterator = iterator,
        filters = {}
    }
    setmetatable(file_tree, self)
    self.__index = self
    return file_tree
end

function FileTree:filter(filter_fn)
    table.insert(self.filters, filter_fn)
    return self
end

function FileTree:__call()
    local next = self.iterator()
    if next == nil then
        return nil
    end

    for k,filter in  pairs(self.filters) do
        if (not filter(next)) then
            return self()
        end
    end
    return next
end

function is_dir(entry)
    return entry:is_dir()
end

function starts_with(prefix)
    return function(entry)
        return entry.path:find("^"..prefix)
    end
end

function does_not(predicate)
    return function(...) return not predicate(...) end
end

local comic_dir = FileTree:new(fs.directory("."))
comic_dir:filter(is_dir)

for chapter_dir in comic_dir do
    FileTree:new(fs.directory(chapter_dir)):filter(does_not(starts_with("./")))

end

--for dir in dirs do
--    if dir:is_dir() then
--        for sub_dir in fs.directory(dir.path) do
--            print(sub_dir)
--        end
--    end
--end

--for dir in dirs do
--    local files = dir:filter {
--        exclude = function(file)
--            return file.is_file and not file.basename:starts_with("._")
--        end
--    }
--
--    zip {
--        from = files,
--        into = dir.basename,
--        extension = "cbz",
--    }
--end