Module:LatestUpdate

Overview

This module calculates the days since the last update stored in Data:LatestUpdate.json and sends to Module:UpdateExcerpt to be displayed by Template:Deadlock Wiki/UpdateExcerpt. It can also be called to calculate the time since any given date, in days.

Examples

days_since_date

This function can be called to calculate the days passed from a given date, using the format "Month/Day/Year". "Month" has to be in numbers.

For days since January 30 2026:

{{#invoke:LatestUpdate|days_since_date|1|30|2026}}

days_since

This is an automated function that calculates the days since the latest update stored in Data:LatestUpdate.json.

days_since_text

This is an automated function that wraps the "days_since" data in a localized text template to be used by Module:UpdateExcerpt.

---

local p = {}

-- Load JSON content from a page
local data = mw.loadJsonData("Data:LatestUpdate.json")
local update = data.latest_update or {}

-- Month name → number mapping
local month_map = {
    January = 1,
    February = 2,
    March = 3,
    April = 4,
    May = 5,
    June = 6,
    July = 7,
    August = 8,
    September = 9,
    October = 10,
    November = 11,
    December = 12
}

function p.month()
    return update.month or ""
end

function p.day()
    return update.day or ""
end

function p.year()
    return update.year or ""
end

local function getMonthNumber(monthName)
    return month_map[monthName]
end

local function getCurrentTime()
    local frame = mw.getCurrentFrame()
    local now_str = frame:callParserFunction("CURRENTTIMESTAMP")

    return os.time({
        year = tonumber(string.sub(now_str, 1, 4)),
        month = tonumber(string.sub(now_str, 5, 6)),
        day = tonumber(string.sub(now_str, 7, 8)),
        hour = 0
    })
end

-- Calculate days since last update
function p.days_since()
    local month_number = getMonthNumber(update.month)

    if not month_number or not update.day or not update.year then
        return 0
    end

    local update_time = os.time({
        year = tonumber(update.year),
        month = month_number,
        day = tonumber(update.day),
        hour = 0
    })

    local now = getCurrentTime()

    local diff_seconds = os.difftime(now, update_time)
    local days = math.floor(diff_seconds / 86400)

    if days < 0 then
        return 0
    end

    return days
end

-- Return formatted text (e.g. "1 day ago", "5 days ago")
function p.days_since_text()
    local days = p.days_since()

    return days .. (days == 1 and " day ago" or " days ago")
end

return p