--:Minify:--
local kernel = ...

local proxy = {}
local data = {}

proxy.address = "devfs0000"
proxy.isvirt = true
proxy.isReadOnly = function() return false end
proxy.spaceUsed = function() return 0 end
proxy.spaceTotal = function() return 0 end
proxy.makeDirectory = function() error("EACCES") end
proxy.remove = function() error("EACCES") end
proxy.setLabel = function() error("EACCES") end
proxy.getLabel = function() return "devfs" end
proxy.attributes = function(path) return {
    size = 0,
    modified = 0,
    created = 0,
} end

function proxy:open(path, mode)
    local steps = kernel.vfs.splitPath(path)
    local step = data
    for i=1, #steps-1 do
        local dat = step[steps[i]]
        if type(dat) ~= "table" then error("ENFILE") end
        step=dat
    end
    if type(step[steps[#steps]]) == "function" then
        return step[steps[#steps]]("open", mode)
    end
    error("ENFILE")
end

function proxy:type(path, mode)
    local steps = kernel.vfs.splitPath(path)
    local step = data
    if #steps == 0 then
        return "directory"
    end
    for i=1, #steps-1 do
        local dat = step[steps[i]]
        if type(dat) ~= "table" then error("ENFILE") end
        step=dat
    end
    if type(step[steps[#steps]]) == "function" then
        return step[steps[#steps]]("type", mode)
    end
    if type(step[steps[#steps]]) == "table" then
        return "directory"
    end
    error("ENOENT")
end

function proxy:list(path)
    local steps = kernel.vfs.splitPath(path)
    local step = data
    if #steps == 0 then
        return table.keys(data)
    end
    for i=1, #steps-1 do
        local dat = step[steps[i]]
        if type(dat) ~= "table" then error("ENOENT") end
        step=dat
    end
    if type(step[steps[#steps]]) == "table" then
        return table.keys(step[steps[#steps]])
    end
    error("ENOENT")
end

function proxy:fileExists(path)
    local ok = pcall(function()
        return self:type(path)
    end)
    return ok
end

function data.random(op, mode)
    if op=="type" then
        return "character device"
    elseif op=="open" then
        if mode=="r" then
            return {
                read=function(amount)
                    local str = ""
                    for i=1, amount or 1 do
                        str=str..string.char(math.random(0, 255))
                    end
                    return str
                end
            }
        elseif mode=="w" or mode=="a" then
            return {
                write=function() end
            }
        else error("EACCES")
        end
    end
end

function data.null(op, mode)
    if op=="type" then
        return "character device"
    elseif op=="open" then
        if mode=="r" then
            return {
                read=function(amount) end
            }
        elseif mode=="w" or mode=="a" then
            return {
                write=function() end
            }
        else error("EACCES")
        end
    end
end

function data.zero(op, mode)
    if op=="type" then
        return "character device"
    elseif op=="open" then
        if mode=="r" then
            return {
                read=function(amount)
                    local str = ""
                    for i=1, amount or 1 do
                        str=str..string.char(0)
                    end
                    return str
                end
            }
        elseif mode=="w" or mode=="a" then
            return {
                write=function() end
            }
        else error("EACCES")
        end
    end
end

data["disk"]={}
kernel.devfs={}
kernel.devfs.data=data
kernel.devfs.proxy=proxy
kernel.disks["devfs0000"]=proxy