Module:About

Documentation for this module may be created at Module:About/doc

local p = {}

-- List of phrases that should bypass the default logic
local custom_starts = {
    "For", "Main", "Not", "Related", "This"
}

local function starts_with_any(text, patterns)
    for _, pat in ipairs(patterns) do
        if mw.ustring.sub(text, 1, #pat) == pat then
            return true
        end
    end
    return false
end

function p.about(frame)
    local arg1 = frame.args[1] or ""
    local arg2 = frame.args[2] or ""
    local arg3 = frame.args[3] or ""
    local title = mw.title.getCurrentTitle().text

    -- Try to get the part before ":" in the title
    local colon_pos = mw.ustring.find(title, ":")
    local title_before_colon = colon_pos and mw.ustring.sub(title, 1, colon_pos - 1) or title

    -- If arg1 starts with a special phrase, output it as-is
    if starts_with_any(arg1, custom_starts) then
        return string.format(
            '<div style="padding-left:1.6em;margin-bottom:0.5em;font-style:italic">%s</div>[[Category:About/Unique Text]]',
            arg1
        )
    end

    -- Otherwise, build the standard hatnote
    local about_text = "This article is about "
    if arg1 ~= "" then
        if colon_pos then
            about_text = about_text .. arg1 .. " of '''" .. title_before_colon .. "'''"
        else
            about_text = about_text .. arg1
        end
    end

    local other_versions = (arg2 ~= "" and arg2) or "other versions"
    local see_target = (arg3 ~= "" and ("[[" .. arg3 .. "]]")) or ("[[" .. title_before_colon .. "]]")

    local result = string.format(
        '<div style="padding-left:1.6em;margin-bottom:0.5em;font-style:italic">%s. For %s, see %s.</div>[[Category:About/Unique Text]]',
        about_text, other_versions, see_target
    )

    return result
end

return p