Module:GetBirthDate

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

local p = {}
local PBD = require('Module:PBD')

local function splitDate(date)
    local day, month, year = nil, nil, nil
    
    if date then
        day, month, year = string.match(date, '(%d+)%s+(%a+)%s+(%d+)')
        
        if not year then
            month, day = string.match(date, '(%a+)%s+(%d+)')
            
            if not day then
                day, month = string.match(date, '(%d+)%s+(%a+)')
            end
        end
        
        if not month and not day then
            year = string.match(date, '(%d+)')
        end
    end
    
    if day then day = tonumber(day) end
    if year then year = tonumber(year) end
    
    return day, month, year
end

local function monthToNumber(month)
    local monthNames = {
        ["January"] = 1, ["February"] = 2, ["March"] = 3,
        ["April"] = 4, ["May"] = 5, ["June"] = 6,
        ["July"] = 7, ["August"] = 8, ["September"] = 9,
        ["October"] = 10, ["November"] = 11, ["December"] = 12
    }
    return monthNames[month]
end

function p.property(frame)
    local propertyId = frame.args[1]
    local part = frame.args[2]
    local format = frame.args[3] or 'number'
    local date = PBD.property(frame, propertyId)
    
    local day, month, year = splitDate(date)
    
    local result = ''
    if part == 'day' and day then
        result = day
    elseif part == 'month' and month then
        if format == 'name' then
            result = month
        else
            result = monthToNumber(month)
        end
    elseif part == 'year' and year then
        result = year
    end
    
    return result
end

return p