Module:D'ni Time

Documentation for this module may be created at Module:D'ni Time/doc

-- THIS IS OBVIOUSLY NOT DONE! DO NOT TOUCH! -Vee

local p = {}

local args = {}
local origArgs
local root

-- Declare important constants
local refDniHahr = 9647
local msPerHahr = 31556925216
local prorahnteePerHahr = 10 * 29 * 5 * 25 * 25 * 25
local msPerProrahn = msPerHahr / prorahnteePerHahr
local refProrahnteePerHahr = 9647 * 290 * 5 * 25 * 25 * 25

local leapSecTimeStamps = {2272060800, 2287785600, 2303683200, 2335219200, 2366755200, 2398291200, 2429913600, 2461449600, 2492985600, 2524521600, 2571782400, 2603318400, 2634854400, 2698012800, 2776982400, 2840140800, 2871676800, 2918937600, 2950473600, 2982009600, 3029443200, 3076704000, 3124137600, 3345062400, 3439756800, 3550089600, 3644697600, 3692217600}
local LeapSecOffset = 10

local function ConvertLeapSecTimeStamps()
-- convert LeapSecTimeStamps from NTP epoch (number of seconds since 1900-01-01 00:00:00)
-- to Unix standard (number of milliseconds since 1970-01-01 00:00:00)

   delta = os.time({year=1900, month=1, day=1, hour=0, min=0})
   for key,value in pairs(leapSecTimeStamps) do
      leapSecTimeStamps[key] = value + delta
   end
end

local function AdjustForLeapSeconds(timestamp)
-- Adjust timestamp for leap seconds
   leapsecs = 0
   for key,value in pairs(leapSecTimeStamps) do
      if timestamp >= value then
         leapsecs = leapsecs + 1
      end
   end
   if leapsecs > 0 then
      leapsecs = leapsecs + (LeapSecOffset - 1)
   end 
   return timestamp + leapsecs
end

local function DejustForLeapSeconds(timestamp)
-- Adjust timestamp for leap seconds the other way
   leapsecs = 0
   for key,value in pairs(leapSecTimeStamps) do
      if timestamp >= value then
         leapsecs = leapsecs + 1
      end
   end
   if leapsecs > 0 then
      leapsecs = leapsecs + (LeapSecOffset - 1)
   end 
   return timestamp - leapsecs
end

local function makeSurfaceTimeStamp(timeStampTable)
-- convert a UTC date-time to a adjusted timestamp
   temp = os.time(timeStampTable)
   return AdjustForLeapSeconds(temp)
end

-- Run conversion of leapseconds and conversion of reference Timestamp here,
-- since these require the above functions to be already declared

ConvertLeapSecTimeStamps()
local refTimeStamp = makeSurfaceTimeStamp({year=1991, month=4, day=21, hour=16, min=54})

local function adjust(dniTime)
-- Ensure DniTime values are within bounds
        while (dniTime['prorahn'] > 25) do
            dniTime['prorahn'] = dniTime['prorahn'] - 25
            dniTime['gorahn'] = dniTime['gorahn'] + 1
        end

        while (dniTime['prorahn'] < 0) do
            dniTime['prorahn'] = dniTime['prorahn'] + 25
            dniTime['gorahn'] = dniTime['gorahn'] - 1
        end

        while (dniTime['gorahn'] > 25) do
            dniTime['gorahn'] = dniTime['gorahn'] - 25;
            dniTime['tahvo'] = dniTime['tahvo'] + 1;
        end

        while (dniTime['gorahn'] < 0) do
            dniTime['gorahn'] = dniTime['gorahn'] + 25
            dniTime['tahvo'] = dniTime['tahvo'] - 1
        end

        while (dniTime['tahvo'] > 25) do
            dniTime['tahvo'] = dniTime['tahvo'] - 25
            dniTime['gahrtahvo'] = dniTime['gahrtahvo'] + 1
        end

        while (dniTime['tahvo'] < 0) do
            dniTime['tahvo'] = dniTime['tahvo'] + 25
            dniTime['gahrtahvo'] = dniTime['gahrtahvo'] - 1
        end

        while (dniTime['gahrtahvo'] > 5) do
            dniTime['gahrtahvo'] = dniTime['gahrtahvo'] - 5
            dniTime['yahr'] = dniTime['yahr'] + 1
        end

        while (dniTime['gahrtahvo'] < 0) do
            dniTime['gahrtahvo'] = dniTime['gahrtahvo'] + 5
            dniTime['yahr'] = dniTime['yahr'] - 1
        end

        while (dniTime['yahr'] > 29) do
            dniTime['yahr'] = dniTime['yahr'] - 29
            dniTime['vailee'] = dniTime['vailee'] + 1
        end

        while (dniTime['yahr'] < 0) do
            dniTime['yahr'] = dniTime['yahr'] + 29
            dniTime['vailee'] = dniTime['vailee'] - 1
        end

        while (dniTime['vailee'] > 9) do
            dniTime['vailee'] = dniTime['vailee'] - 10
            dniTime['hahr'] = dniTime['hahr'] + 1;
        end

        while (dniTime['vailee'] < 0) do
            dniTime['vailee'] = dniTime['vailee'] + 10
            dniTime['hahr'] = dniTime['hahr'] - 1
        end

        return dniTime
end


local function surface2DniTime(surfaceTimeStamp)
-- Given a surfaceTimestamp
-- Return a DniTime (table)
   surface = surface or refTimeStamp

   dniTime = {}

   delta = (surfaceTimeStamp - refTimeStamp) * 1000

   dniTime['hahr'] = math.floor(delta / msPerHahr)

   delta = delta - (dniTime['hahr'] * msPerHahr)

   delta = delta * (prorahnteePerHahr / msPerHahr)

   dniTime['vailee'] = math.floor(delta / (29 * 5 * 25 * 25 * 25))
   delta = delta - (dniTime['vailee'] * (29 * 5 * 25 * 25 * 25))

   dniTime['yahr'] = math.floor(delta / (5 * 25 * 25 * 25))
   delta = delta - (dniTime['yahr'] * (5 * 25 * 25 * 25))

   dniTime['gahrtahvo'] = math.floor(delta / (25 * 25 * 25))
   delta = delta - (dniTime['gahrtahvo'] * (25 * 25 * 25))

   dniTime['tahvo'] = math.floor(delta / (25 * 25))
   delta = delta - (dniTime['tahvo'] * (25 * 25))

   dniTime['gorahn'] = math.floor(delta / 25)
   delta = delta - (dniTime['gorahn'] * 25)

   dniTime['prorahn'] = math.floor(delta)

   dniTime['hahr'] = dniTime['hahr'] + refDniHahr
   dniTime['yahr'] = dniTime['yahr'] + 1

   --return adjust(dniTime)
   return dniTime
end

local function dni2SurfaceTime(dniTime)
-- Given a DniTime (table)
-- Return a surfacteTimestamp
   dniTime = dniTime or {hahr = refDniHahr, vailee = 0, yahr = 1, gahrtahvo = 0, tahvo = 0, gorahn = 0, prorahn = 0}

   dniTime = adjust(dniTime)

   dTimeInProrahntee = dniTime['prorahn'] + (dniTime['gorahn'] * 25) + (dniTime['tahvo'] * 25 * 25) + (dniTime['gahrtahvo'] * 25 * 25 * 25) + ((dniTime['yahr'] - 1) * 5 * 25 * 25 * 25) + ((dniTime['vailee']) * 29 * 5 * 25 * 25 * 25) + (dniTime['hahr'] * 290 * 5 * 25 * 25 * 25)

   dTimeDelta = refProrahnteePerHahr - dTimeInProrahntee 
   
   dTimeDelta = dTimeDelta * msPerProrahn

   dTimeDelta = (refTimeStamp * 1000) - dTimeDelta

   surfaceTimestamp = DejustForLeapSeconds(dTimeDelta/1000)

   return os.date("*t",surfaceTimestamp)
end

-- ==Parse Functions==

local function parseSurfaceDateStr(dateStr)
-- Given a surface data string, accepts formats that #time accepts
-- Returns a surfaceDate (table)

   lang = mw.getContentLanguage()

   surfaceTimeStamp = lang:formatDate("U",dateStr)

   return os.date("!*t",surfaceTimeStamp)

end

-- ==Display Functions==

local function getVaileeName(vailee, useDniFont)
-- Return name of vailee given number (zero-indexed)
-- If useDniFont is true, return it in Dnifont text 

    useDniFont = useDniFont or false

    vaileetee = {"Leefo","Leebro","Leesahn","Leetar","Leevot","Leevofo","Leevobro","Leevosahn","Leevotar","Leenovoo"}
    vaileetee_dnifont = {"lEfo","lEbro","lEsan","lEtar","lEvot","lEvofo","lEvobro","lEvosan","lEvotar","lEnovU"}

    if(useDniFont) then
       return vaileetee_dnifont[vailee+1]
    else
       return vaileetee[vailee+1]
    end
end

local function displayDniTime(dniTime)
-- Return dniTime (table) as string of table

   return '{'..'hahr = '..dniTime['hahr']..', vailee = '..dniTime['vailee']..', vaileeName = '..getVaileeName(dniTime['vailee'])..', yahr = '..dniTime['yahr']..', gahrtahvo = '..dniTime['gahrtahvo']..', tahvo = '..dniTime['tahvo']..', gorahn = '..dniTime['gorahn']..', prorahn = '..dniTime['prorahn']..'}'

end

local function displaySurfaceTime(surface)
-- Return surfaceTime (table) as string of table

   return '{'..'year = '..surface['year']..', month = '..surface['month']..', day = '..surface['day']..', hour = '..surface['hour']..', min = '..surface['min']..', sec = '..surface['sec']..'}'
end

local function formatSurfaceTime(surfaceTime,format)

   format = format or 'c'
 
   lang = mw.getContentLanguage()
   return lang:formatDate(format,tostring(surfaceTime['year'])..'/'..tostring(surfaceTime['month'])..'/'..tostring(surfaceTime['day'])..' '..tostring(surfaceTime['hour'])..':'..tostring(surfaceTime['min'])..':'..tostring(surfaceTime['sec']))
end

local function formatDniTime(dniTime,format)
-- Given a DniTime (table), returns formatted string.
-- format is a string with patterns for parts of the date, like standard dates
-- Patterns in capitals padded with zeroes
-- HHHH, hhhh = hahr (4-digits, Uppercase includes +/-)
-- hh = last two digits of the hahr
-- XX = 'era' (BE or AE)
-- VVVV = vailee by name
-- VV,vv = vailee (1 indexed)
-- YY, yy = yahr
-- GG, gg = gahrtahvo
-- TT, tt = tahvo
-- RR, rr = gorahnn
-- PP, pp = prorahn

   format = format or "VVVV yy HHHH gg:tt:rr:pp"

   result = format

   if (dniTime['hahr'] < 0) then era = "BE" else era = "AE" end

   result = string.gsub(result,"HHHH", string.format("%04d",tostring(dniTime['hahr'])))
   result = string.gsub(result,"hhhh", math.abs(dniTime['hahr']))
   result = string.gsub(result,"hh", string.sub(dniTime['hahr'],-2))
   result = string.gsub(result,"YY", string.format("%02d",tostring(dniTime['yahr'])))
   result = string.gsub(result,"yy", dniTime['yahr'])
   result = string.gsub(result,"VVVV", getVaileeName(dniTime['vailee']))
   result = string.gsub(result,"VV", string.format("%02d",tostring(dniTime['vailee']+1)))
   result = string.gsub(result,"vv", dniTime['vailee'] + 1)
   result = string.gsub(result,"GG", string.format("%02d",tostring(dniTime['gahrtahvo'])))
   result = string.gsub(result,"gg", dniTime['gahrtahvo'])
   result = string.gsub(result,"TT", string.format("%02d",tostring(dniTime['tahvo'])))
   result = string.gsub(result,"tt", dniTime['tahvo'])
   result = string.gsub(result,"RR", string.format("%02d",tostring(dniTime['gorahn'])))
   result = string.gsub(result,"rr", dniTime['gorahn'])
   result = string.gsub(result,"PP", string.format("%02d",tostring(dniTime['prorahn'])))
   result = string.gsub(result,"pp", dniTime['prorahn'])
   result = string.gsub(result,"XX", era) 

   return result

end


-- =============================================================================

local function preprocessSingleArg(argName)
    -- If the argument exists and isn't blank, add it to the argument table.
    -- Blank arguments are treated as nil to match the behaviour of ParserFunctions.
    if origArgs[argName] and origArgs[argName] ~= '' then
        args[argName] = origArgs[argName]
    end
end

local function preprocessArgs(prefixTable, step)
    -- Assign the parameters with the given prefixes to the args table, in order, in batches
    -- of the step size specified. This is to prevent references etc. from appearing in the
    -- wrong order. The prefixTable should be an array containing tables, each of which has
    -- two possible fields, a "prefix" string and a "depend" table. The function always parses
    -- parameters containing the "prefix" string, but only parses parameters in the "depend"
    -- table if the prefix parameter is present and non-blank.
    if type(prefixTable) ~= 'table' then
        error("Non-table value detected for the prefix table", 2)
    end
    if type(step) ~= 'number' then
        error("Invalid step value detected", 2)
    end
    
    -- Get arguments without a number suffix, and check for bad input.
    for i,v in ipairs(prefixTable) do
        if type(v) ~= 'table' or type(v.prefix) ~= "string" or (v.depend and type(v.depend) ~= 'table') then
            error('Invalid input detected to preprocessArgs prefix table', 2)
        end
        preprocessSingleArg(v.prefix)
        -- Only parse the depend parameter if the prefix parameter is present and not blank.
        if args[v.prefix] and v.depend then
            for j, dependValue in ipairs(v.depend) do
                if type(dependValue) ~= 'string' then
                    error('Invalid "depend" parameter value detected in preprocessArgs')
                end
                preprocessSingleArg(dependValue)
            end
        end
    end

    -- Get arguments with number suffixes.
    local a = 1 -- Counter variable.
    local moreArgumentsExist = true
    while moreArgumentsExist == true do
        moreArgumentsExist = false
        for i = a, a + step - 1 do
            for j,v in ipairs(prefixTable) do
                local prefixArgName = v.prefix .. tostring(i)
                if origArgs[prefixArgName] then
                    moreArgumentsExist = true -- Do another loop if any arguments are found, even blank ones.
                    preprocessSingleArg(prefixArgName)
                end
                -- Process the depend table if the prefix argument is present and not blank, or
                -- we are processing "prefix1" and "prefix" is present and not blank, and
                -- if the depend table is present.
                if v.depend and (args[prefixArgName] or (i == 1 and args[v.prefix])) then
                    for j,dependValue in ipairs(v.depend) do
                        local dependArgName = dependValue .. tostring(i)
                        preprocessSingleArg(dependArgName)
                    end
                end
            end
        end
        a = a + step
    end
end

function p.surface2dni(frame)
    -- If called via #invoke, use the args passed into the invoking template.
    -- Otherwise, for testing purposes, assume args are being passed directly in.
    if frame == mw.getCurrentFrame() then
        origArgs = frame:getParent().args
    else
        origArgs = frame
    end

    preprocessSingleArg('year')
    preprocessSingleArg('month')  
    preprocessSingleArg('day') 
    preprocessSingleArg('hour') 
    preprocessSingleArg('minute') 
    preprocessSingleArg('second') 

    -- Parse the data parameters
    surface = {year = args['year'], month = args['month'], day = args['day'], hour = args['hour'], min = args['minute'], sec = args['second']}

--      return displaySurfaceTime(surface)
    return formatDniTime(surface2DniTime(makeSurfaceTimeStamp(surface)))

end

function p.dni2surface(frame)
    -- If called via #invoke, use the args passed into the invoking template.
    -- Otherwise, for testing purposes, assume args are being passed directly in.
    if frame == mw.getCurrentFrame() then
        origArgs = frame:getParent().args
    else
        origArgs = frame
    end

    preprocessSingleArg('hahr')
    preprocessSingleArg('vailee')  
    preprocessSingleArg('yahr') 
    preprocessSingleArg('gahrtahvo') 
    preprocessSingleArg('tahvo') 
    preprocessSingleArg('gorahn')
    preprocessSingleArg('prorahn') 

    -- Parse the data parameters
    dni = {hahr = tonumber(args['hahr']), vailee = tonumber(args['vailee']), yahr = tonumber(args['yahr']), gahrtahvo = tonumber(args['gahrtahvo']), tahvo = tonumber(args['tahvo']), gorahn = tonumber(args['gorahn']), prorahn = tonumber(args['prorahn'])}

--      return displaySurfaceTime(surface)
    return formatSurfaceTime(dni2SurfaceTime(dni))

end

function p.test(frame)
    -- If called via #invoke, use the args passed into the invoking template.
    -- Otherwise, for testing purposes, assume args are being passed directly in.
    if frame == mw.getCurrentFrame() then
        origArgs = frame:getParent().args
    else
        origArgs = frame
    end
    
    -- Parse the data parameters
    
    lang = mw.getContentLanguage()

    timeStr = "1991-04-21 16:54:00 +0000"

    output = timeStr .. "<br/>"..lang:formatDate("U",timeStr)
    output = output .. "<br/>"..displaySurfaceTime(parseSurfaceDateStr(timeStr))
    output = output .. "<br/>"..os.time(parseSurfaceDateStr(timeStr))
    output = output .. "<br/>"..displayDniTime(surface2DniTime(os.time(parseSurfaceDateStr(timeStr))))
    output = output .. "<br/>"..displayDniTime(surface2DniTime(makeSurfaceTimeStamp(parseSurfaceDateStr(timeStr))))


    return output
end

return p