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

local p = {}
local country_names_data = mw.loadJsonData( 'Module:Country links/data.json' )
p.regions = {
    {
        name = "Africa",
        name_code = "r002",
        countries = {
            "DZ", "AO", "BI", "TD", "EG", "GH", "KE", "LR", "MA", "NE",
            "NG", "ZA", "UG"
        }
    },
    {
        name = "Asia",
        name_code = "r142",
        countries = {
            "AZ", "BH", "BD", "BT", "BN", "KH", "CN", "TL", "HK", "IN",
            "IL", "JP", "JO", "KZ", "KW", "MO", "MY", "MV", "MN", "NP",
            "OM", "PK", "PH", "QA", "SG", "LK", "TW", "TJ", "TH", "VN"
        }
    },
    {
        name = "Europe",
        name_code = "r150",
        countries = {
            "AL", "AD", "AT", "BE", "BA", "BG", "HR", "CY", "CZ", "DK",
            "EE", "FR", "GE", "DE", "GR", "HU", "IS", "IT", "LV", "LI",
            "LT", "LU", "MT", "MC", "ME", "NL", "NO", "PL", "PT", "IE",
            "RO", "RS", "SK", "SI", "ES", "SE", "CH", "GB", "VA"
        }
    },
    {
        name = "North America",
        name_code = "r003",
        countries = {
            "US", "AW", "BS", "BB", "BZ", "BM", "CA", "CR", "DM", "GD",
            "GP", "HT", "HN", "JM", "MQ", "MX", "NI", "PA", "PR", "KN",
            "LC", "PM", "VC", "TT", "TC"
        }
    },
    {
        name = "South America",
        name_code = "r005",
        countries = {
            "AR", "BO", "BR", "CL", "CO", "EC", "FK", "GF", "GY", "PE",
            "SR", "UY", "VE"
        }
    },
    {
        name = "Oceania",
        name_code = "r009",
        countries = {
            "AS", "AU", "CK", "FJ", "PF", "GU", "KI", "MH", "FM", "NR",
            "NZ", "PW"
        }
    }
}

function p.get_country_name( language_code, country_code )
    local name
    if country_names_data[language_code] == nil then
        language_code = 'en'
    end
    if country_names_data[language_code][country_code] == nil then
        name = country_names_data['en'][country_code]
    else
        name = country_names_data[language_code][country_code]
    end
    return name
end

function p.get_donate_url( language_code, country_code )
    local url = 'https://donate.wikimedia.org/wiki/Special:FundraiserLandingPage'
    url = url .. '?wmf_medium=Waystogive&wmf_source=Waystogive&wmf_campaign=C11_Waystogive'
    url = url .. '&uselang=' .. language_code
    url = url .. '&country=' .. country_code
    return url
end

function p.make_donate_links( language_code, country_list )

    local wikitext = ''
    local t = {}
    for key, value in ipairs(country_list) do
        table.insert(t, {value, p.get_country_name(language_code, value)})
    end

    -- sort by country name
    table.sort(t, function (k1, k2) return k1[2] < k2[2] end)

    for key, value in ipairs(t) do
        local url = p.get_donate_url( language_code, value[1] )
        local link_text = value[2]
        wikitext = wikitext .. '* [' .. url .. ' ' .. link_text .. ']\n'
    end

    return wikitext
end

function p.build_all_regions( language_code )
    local out = ''
    for i,v in ipairs(p.regions) do
        local region_name = p.get_country_name( language_code, v.name_code )
        out = out .. '<div class="mw-collapsible mw-collapsed">\n'
        out = out .. '<div class="mw-collapsible-toggle continent-header">' .. region_name .. '</div>\n'
        out = out .. '<div class="mw-collapsible-content country-list">\n'
        out = out .. p.make_donate_links( language_code, v.countries )
        out = out .. '</div>\n'
        out = out .. '</div>\n'
    end
    return out
end

function p.main( frame )
    local language_code = p.page_language( frame )
    return p.build_all_regions( language_code )
end
    
function p.page_language( frame )
    local full_title = mw.title.getCurrentTitle().prefixedText
    local t = mw.text.split( full_title, '/' )
    local lang = t[#t]
    if mw.language.isKnownLanguageTag( lang ) then
        return lang
    else
        return 'en'
    end
end

-- version we can #invoke with parameters
function p.get_country_name_wrapper( frame )
	return p.get_country_name( frame.args[1], frame.args[2] )
end

return p