# Module:Location map

require('strict')  

local p = {}  

local getArgs = require('Module:Arguments').getArgs  

local function round(n, decimals)  
local pow = 10^(decimals or 0)  
return math.floor(n * pow + 0.5) / pow  
end  

function p.getMapParams(map, )  
if not map then  
error('The name of the location map definition to use must be specified', 2)  
end  
local moduletitle = mw.title.new('Module:Location map/data/' .. map)  
if not moduletitle then  
error(string.format('%q is not a valid name for a location map definition', map), 2)  
elseif moduletitle.exists then  
local mapData = mw.loadData('Module:Location map/data/' .. map)  
return function(name, params)  
if name == nil then  
return 'Module:Location map/data/' .. map  
elseif mapData[name] == nil then  
return ''  
elseif params then  
return mw.message.newRawMessage(tostring(mapData[name]), unpack(params)):plain  
else  
return mapData[name]  
end  
end  
else  
error('Unable to find the specified location map definition: "Module:Location map/data/' .. map .. '" does not exist', 2)  
end  
end  

function p.data(, args, map)  
if not args then  
args = getArgs(, {frameOnly = true})  
end  
if not map then  
map = p.getMapParams(args[1], )  
end  
local params = {}  
for k,v in ipairs(args) do  
if k > 2 then  
params[k-2] = v  
end  
end  
return map(args[2], #params ~= 0 and params)  
end  

local hemisphereMultipliers = {  
longitude = { W = -1, w = -1, E = 1, e = 1 },  
latitude = { S = -1, s = -1, N = 1, n = 1 }  
}  

local function decdeg(degrees, minutes, seconds, hemisphere, decimal, direction)  
if decimal then  
if degrees then  
error('Decimal and DMS degrees cannot both be provided for ' .. direction, 2)  
elseif minutes then  
error('Minutes can only be provided with DMS degrees for ' .. direction, 2)  
elseif seconds then  
error('Seconds can only be provided with DMS degrees for ' .. direction, 2)  
elseif hemisphere then  
error('A hemisphere can only be provided with DMS degrees for ' .. direction, 2)  
end  
local retval = tonumber(decimal)  
if retval then  
return retval  
end  
error('The value "' .. decimal .. '" provided for ' .. direction .. ' is not valid', 2)  
elseif seconds and not minutes then  
error('Seconds were provided for ' .. direction .. ' without minutes also being provided', 2)  
elseif not degrees then  
if minutes then  
error('Minutes were provided for ' .. direction .. ' without degrees also being provided', 2)  
elseif hemisphere then  
error('A hemisphere was provided for ' .. direction .. ' without degrees also being provided', 2)  
end  
return nil  
end  
decimal = tonumber(degrees)  
if not decimal then  
error('The degree value "' .. degrees .. '" provided for ' .. direction .. ' is not valid', 2)  
elseif minutes and not tonumber(minutes) then  
error('The minute value "' .. minutes .. '" provided for ' .. direction .. ' is not valid', 2)  
elseif seconds and not tonumber(seconds) then  
error('The second value "' .. seconds .. '" provided for ' .. direction .. ' is not valid', 2)  
end  
decimal = decimal + (minutes or 0)/60 + (seconds or 0)/3600  
if hemisphere then  
local multiplier = hemisphereMultipliers[direction][hemisphere]  
if not multiplier then  
error('The hemisphere "' .. hemisphere .. '" provided for ' .. direction .. ' is not valid', 2)  
end  
decimal = decimal * multiplier  
end  
return decimal  
end  

-- Finds a parameter in a transclusion of .  
local function coord2text(para,coord) -- this should be changed for languages which do not use Arabic numerals or the degree sign  
local lat, long = mw.ustring.match(coord,'<span>([^<]+)</span><span>([^<]+)</span>')  
if lat then  
return tonumber(para == 'longitude' and long or lat)  
end  
local result = mw.text.split(mw.ustring.match(coord,'%-?[%.%d]+°[NS] %-?[%.%d]+°[EW]') or '', '[ °]')  
if para == 'longitude' then result = {result[3], result[4]} end  
if not tonumber(result[1]) or not result[2] then  
mw.log('Malformed coordinates value')  
mw.logObject(para, 'para')  
mw.logObject(coord, 'coord')  
return error('Malformed coordinates value', 2)  
end  
return tonumber(result[1]) * hemisphereMultipliers[para][result[2]]  
end  

-- effectively make removeBlanks false for caption and maplink, and true for everything else  
-- if useWikidata is present but blank, convert it to false instead of nil  
-- p.top, p.bottom, and their callers need to use this  
function p.valueFunc(key, value)  
if value then  
value = mw.text.trim(value)  
end  
if value ~= '' or key == 'caption' or key == 'maplink' then  
return value  
elseif key == 'useWikidata' then  
return false  
end  
end  

local function getContainerImage(args, map)  
if args.AlternativeMap then  
return args.AlternativeMap  
elseif args.relief then  
local digits = mw.ustring.match(args.relief,'^[1-9][0-9]?$') or '1' -- image1 to image99  
if map('image' .. digits) ~= '' then  
return map('image' .. digits)  
end  
end  
return map('image')  
end  

function p.top(, args, map)  
if not args then  
args = getArgs(, {frameOnly = true, valueFunc = p.valueFunc})  
end  
if not map then  
map = p.getMapParams(args[1], )  
end  
local width  
local default_as_number = tonumber(mw.ustring.match(tostring(args.default_width),"%d*"))  
if not args.width then  
width = round((default_as_number or 240) * (tonumber(map('defaultscale')) or 1))  
elseif mw.ustring.sub(args.width, -2) == 'px' then  
width = mw.ustring.sub(args.width, 1, -3)  
else  
width = args.width  
end  
local width_as_number = tonumber(mw.ustring.match(tostring(width),"%d*")) or 0;  
if width_as_number == 0 then  
-- check to see if width is junk. If it is, then use default calculation  
width = round((default_as_number or 240) * (tonumber(map('defaultscale')) or 1))  
width_as_number = tonumber(mw.ustring.match(tostring(width),"%d*")) or 0;  
end  
if args.max_width ~= "" and args.max_width ~= nil then  
-- check to see if width bigger than max_width  
local max_as_number = tonumber(mw.ustring.match(args.max_width,"%d*")) or 0;  
if width_as_number>max_as_number and max_as_number>0 then  
width = args.max_width;  
end  
end  
local retval = :extensionTag{name = 'templatestyles', args = {src = 'Module:Location map/styles.css'}}  
if args.float == '' then  
retval = retval .. '<div>'  
end  
if args.caption and args.caption ~= '' and args. ~= 'infobox' then  
retval = retval .. '<div"' or args.float == '' then  
retval = retval .. 'tleft'  
elseif args.float == '""' or args.float == * or args.float == '""' or args.float == * then  
retval = retval .. 'tnone'  
else  
retval = retval .. 'tright'  
end  
retval = retval .. '"><div><div>' or '">')  
else  
retval = retval .. '<div"' or args.float == '' then  
retval = retval .. 'float:;clear:'  
elseif args.float == '""' or args.float == '' then  
retval = retval .. 'float:;clear:both;margin-:auto;margin-:auto'  
elseif args.float == '""' or args.float == '' then  
retval = retval .. 'float:;clear:'  
else  
retval = retval .. 'float:;clear:'  
end  
retval = retval .. '"><div><div>'  
end  
local image = getContainerImage(args, map)  
local currentTitle = mw.title.getCurrentTitle  
retval = string.format(  
'%s',  
retval,  
image,  
width,  
args.alt or ((args.label or currentTitle.text) .. ' is located in ' .. map('name')),  
args.maplink and ('|link=' .. args.maplink) or ''  
if args.caption and args.caption ~= '' then  
if (currentTitle.namespace == 0) and mw.ustring.find(args.caption, '##') then  
retval = retval .. ''  
end  
end  
if args.overlay_image then  
return retval .. '<div></div>'  
else  
return retval  
end  
end  

function p.bottom(, args, map)  
if not args then  
args = getArgs(, {frameOnly = true, valueFunc = p.valueFunc})  
end  
if not map then  
map = p.getMapParams(args[1], )  
end  
local retval = '</div>'  
local currentTitle = mw.title.getCurrentTitle  
if not args.caption or args. == 'infobox' then  
if args. then  
retval = retval .. '<div>'  
else  
retval = retval .. '<div>'  
end  
retval = retval  
.. (args.caption or (args.label or currentTitle.text) .. ' (' .. map('name') .. ')')  
.. '</div>'  
elseif args.caption ~= '' then  
-- This is not the pipe trick. We're creating a link with no text on purpose, so that CSS can give us a nice image  
retval = retval .. '<div><div></div>' .. args.caption .. '</div>'  
end  

if args.switcherLabel then  
retval = retval .. '<span>' .. args.switcherLabel .. '</span>'  
elseif args.autoSwitcherLabel then  
retval = retval .. '<span>வரைபடத்தைக் காட்டுக: ' .. map('name') .. '</span>'  
end  

retval = retval .. '</div></div>'  
if args.caption_undefined then  
mw.log('Removed parameter caption_undefined used.')  
local parent = :getParent  
if parent then  
mw.log('Parent is ' .. parent:getTitle)  
end  
mw.logObject(args, 'args')  
if currentTitle.namespace == 0 then  
retval = retval .. ''  
end  
end  
if map('skew') ~= * or map('lat_skew') ~= * or map('crosses180') ~= * or map('type') ~= * then  
mw.log('Removed parameter used in map definition ' .. map)  
if currentTitle.namespace == 0 then  
local key = (map('skew') ~= * and 'skew' or *) ..  
(map('lat_skew') ~= * and 'lat_skew' or *) ..  
(map('crosses180') ~= * and 'crosses180' or *) ..  
(map('type') ~= * and 'type' or *)  
retval = retval .. ''  
end  
end  
if string.find(map('name'), '|', 1, true) then  
mw.log('Pipe used in name of map definition ' .. map)  
if currentTitle.namespace == 0 then  
retval = retval .. ''  
end  
end  
if args.float == '' then  
retval = retval .. '</div>'  
end  
return retval  
end  

local function markOuterDiv(x, y, imageDiv, labelDiv, label_size)  
return mw.html.create('div')  
:addClass('od')  
:addClass('notheme') -- T236137  
:cssText('top:' .. round(y, 3) .. '%;:' .. round(x, 3) .. '%;font-size:' .. label_size .. '%')  
:node(imageDiv)  
:node(labelDiv)  
end  

local function markImageDiv(mark, marksize, label, link, alt, title)  
local builder = mw.html.create('div')  
:addClass('id')  
:cssText(':-' .. round(marksize / 2) .. 'px;top:-' .. round(marksize / 2) .. 'px')  
:attr('title', title)  
if marksize ~= 0 then  
builder:wikitext(string.format(  
'',  
mark,  
marksize,  
marksize,  
label,  
link,  
alt and ('|alt=' .. alt) or ''  
))  
end  
return builder  
end  

local function markLabelDiv(label, label_size, label_width, position, background, x, marksize)  
if tonumber(label_size) == 0 then  
return mw.html.create('div'):addClass('l0'):wikitext(label)  
end  
local builder = mw.html.create('div')  
:cssText('width:' .. label_width .. 'em')  
local distance = round(marksize / 2 + 1)  
if position == 'top' then -- specified top  
builder:addClass('pv'):cssText('bottom:' .. distance .. 'px;:' .. (-label_width / 2) .. 'em')  
elseif position == 'bottom' then -- specified bottom  
builder:addClass('pv'):cssText('top:' .. distance .. 'px;:' .. (-label_width / 2) .. 'em')  
elseif position == * or (tonumber(x) > 70 and position ~= *) then -- specified or autodetected to  
builder:addClass('pl'):cssText(':' .. distance .. 'px')  
else -- specified or autodetected to  
builder:addClass('pr'):cssText(':' .. distance .. 'px')  
end  
builder = builder:tag('div')  
:wikitext(label)  
if background then  
builder:cssText('background-color:' .. background)  
end  
return builder:done  
end  

local function getX(longitude, , )  
local width = ( - ) % 360  
if width == 0 then  
width = 360  
end  
local distanceFromLeft = (longitude - ) % 360  
-- the distance needed past the map to the equals distanceFromLeft - width. the distance needed past the map to the equals 360 - distanceFromLeft. to minimize page stretching, go whichever way is shorter  
if distanceFromLeft - width / 2 >= 180 then  
distanceFromLeft = distanceFromLeft - 360  
end  
return 100 * distanceFromLeft / width  
end  

local function getY(latitude, top, bottom)  
return 100 * (top - latitude) / (top - bottom)  
end  

function p.mark(, args, map)  
if not args then  
args = getArgs(, {wrappers = 'Template:Location map~'})  
end  
local mapnames = {}  
if not map then  
if args[1] then  
map = {}  
for mapname in mw.text.gsplit(args[1], '#', true) do  
map[#map + 1] = p.getMapParams(mw.ustring.gsub(mapname, '^%s*(.-)%s*$', '%1'), )  
mapnames[#mapnames + 1] = mapname  
end  
if #map == 1 then map = map[1] end  
else  
map = p.getMapParams('World', )  
args[1] = 'World'  
end  
end  
if type(map) == 'table' then  
local outputs = {}  
local oldargs = args[1]  
for k,v in ipairs(map) do  
args[1] = mapnames[k]  
outputs[k] = tostring(p.mark(, args, v))  
end  
args[1] = oldargs  
return table.concat(outputs, '#PlaceList#') .. '#PlaceList#'  
end  
local x, y, longitude, latitude  
longitude = decdeg(args.lon_deg, args.lon_min, args.lon_sec, args.lon_dir, args.long, 'longitude')  
latitude = decdeg(args.lat_deg, args.lat_min, args.lat_sec, args.lat_dir, args.lat, 'latitude')  
if args.excludefrom then  
-- If this mark is to be excluded from certain maps entirely (useful in the context of multiple maps)  
for exclusionmap in mw.text.gsplit(args.excludefrom, '#', true) do  
-- Check if this map is excluded. If so, return an empty string.  
if args[1] == exclusionmap then  
return ''  
end  
end  

end  
local builder = mw.html.create  
local currentTitle = mw.title.getCurrentTitle  
if args.coordinates then  
-- Temporarily removed to facilitate infobox conversion. See  

-- if longitude or latitude then  
-- error('Coordinates from Module:Coordinates and individual coordinates cannot both be provided')  
-- end  
longitude = coord2text('longitude', args.coordinates)  
latitude = coord2text('latitude', args.coordinates)  
elseif not longitude and not latitude and args.useWikidata then  
-- If they didn't provide either coordinate, try Wikidata. If they provided one but not the other, don't.  
local entity = mw.wikibase.getEntity  
if entity and entity.claims and entity.claims.P625 and entity.claims.P625[1].mainsnak.snaktype == 'value' then  
local value = entity.claims.P625[1].mainsnak.datavalue.value  
longitude, latitude = value.longitude, value.latitude  
end  
if args.link and (currentTitle.namespace == 0) then  
builder:wikitext('')  
end  
end  
if not longitude then  
error('No value was provided for longitude')  
elseif not latitude then  
error('No value was provided for latitude')  
end  
if currentTitle.namespace > 0 then  
if (not args.lon_deg) ~= (not args.lat_deg) then  
builder:wikitext('')  
elseif (not args.lon_min) ~= (not args.lat_min) then  
builder:wikitext('')  
elseif (not args.lon_sec) ~= (not args.lat_sec) then  
builder:wikitext('')  
elseif (not args.lon_dir) ~= (not args.lat_dir) then  
builder:wikitext('')  
elseif (not args.long) ~= (not args.lat) then  
builder:wikitext('')  
end  
end  
if ((tonumber(args.lat_deg) or 0) < 0) and ((tonumber(args.lat_min) or 0) ~= 0 or (tonumber(args.lat_sec) or 0) ~= 0 or (args.lat_dir and args.lat_dir ~='')) then  
builder:wikitext('')  
end  
if ((tonumber(args.lon_deg) or 0) < 0) and ((tonumber(args.lon_min) or 0) ~= 0 or (tonumber(args.lon_sec) or 0) ~= 0 or (args.lon_dir and args.lon_dir ~= '')) then  
builder:wikitext('')  
end  
if (((tonumber(args.lat_min) or 0) < 0) or ((tonumber(args.lat_sec) or 0) < 0)) then  
builder:wikitext('')  
end  
if (((tonumber(args.lon_min) or 0) < 0) or ((tonumber(args.lon_sec) or 0) < 0)) then  
builder:wikitext('')  
end  
if args.skew or args.lon_shift or args.markhigh then  
mw.log('Removed parameter used in invocation.')  
local parent = :getParent  
if parent then  
mw.log('Parent is ' .. parent:getTitle)  
end  
mw.logObject(args, 'args')  
if currentTitle.namespace == 0 then  
local key = (args.skew and 'skew' or '') ..  
(args.lon_shift and 'lon_shift' or '') ..  
(args.markhigh and 'markhigh' or '')  
builder:wikitext('')  
end  
end  
if map('x') ~= '' then  
x = tonumber(mw.ext.ParserFunctions.expr(map('x', { latitude, longitude })))  
else  
x = tonumber(getX(longitude, map(*), map(*)))  
end  
if map('y') ~= '' then  
y = tonumber(mw.ext.ParserFunctions.expr(map('y', { latitude, longitude })))  
else  
y = tonumber(getY(latitude, map('top'), map('bottom')))  
end  
if (x < 0 or x > 100 or y < 0 or y > 100) and not args.outside then  
mw.log('Mark placed outside map boundaries without outside flag set. x = ' .. x .. ', y = ' .. y)  
local parent = :getParent  
if parent then  
mw.log('Parent is ' .. parent:getTitle)  
end  
mw.logObject(args, 'args')  
if currentTitle.namespace == 0 then  
local key = currentTitle.prefixedText  
builder:wikitext('')  
end  
end  
local mark = args.mark or map('mark')  
if mark == '' then  
mark = 'Red pog.svg'  
end  
local marksize = tonumber(args.marksize) or tonumber(map('marksize')) or 8  
local imageDiv = markImageDiv(mark, marksize, args.label or mw.title.getCurrentTitle.text, args.link or '', args.alt, args[2])  
local label_size = args.label_size or 91  
local labelDiv  
if args.label and args.position ~= '' then  
labelDiv = markLabelDiv(args.label, label_size, args.label_width or 6, args.position, args.background, x, marksize)  
end  
return builder:node(markOuterDiv(x, y, imageDiv, labelDiv, label_size))  
end  

local function switcherSeparate(s)  
if s == nil then return {} end  
local retval = {}  
for i in string.gmatch(s .. '#', '([^#]*)#') do  
i = mw.text.trim(i)  
retval[#retval + 1] = (i ~= '' and i)  
end  
return retval  
end  

function p.main(, args, map)  
local caption_list = {}  
if not args then  
args = getArgs(, {wrappers = 'Template:Location map', valueFunc = p.valueFunc})  
end  
if args.useWikidata == nil then  
args.useWikidata = true  
end  
if not map then  
if args[1] then  
map = {}  
for mapname in string.gmatch(args[1], '[^#]+') do  
map[#map + 1] = p.getMapParams(mw.ustring.gsub(mapname, '^%s*(.-)%s*$', '%1'), )  
end  
if args['caption'] then  
if args['caption'] == "" then  
while #caption_list < #map do  
caption_list[#caption_list + 1] = args['caption']  
end  
else  
for caption in mw.text.gsplit(args['caption'], '##', true) do  
caption_list[#caption_list + 1] = caption  
end  
end  
end  
if #map == 1 then map = map[1] end  
else  
map = p.getMapParams('World', )  
end  
end  
if type(map) == 'table' then  
local altmaps = switcherSeparate(args.AlternativeMap)  
if #altmaps > #map then  
error(string.format('%d AlternativeMaps were provided, but only %d maps were provided', #altmaps, #map))  
end  
local overlays = switcherSeparate(args.overlay_image)  
if #overlays > #map then  
error(string.format('%d overlay_images were provided, but only %d maps were provided', #overlays, #map))  
end  
if #caption_list > #map then  
error(string.format('%d captions were provided, but only %d maps were provided', #caption_list, #map))  
end  
local outputs = {}  
args.autoSwitcherLabel = true  
for k,v in ipairs(map) do  
args.AlternativeMap = altmaps[k]  
args.overlay_image = overlays[k]  
args.caption = caption_list[k]  
outputs[k] = p.main(, args, v)  
end  
return '<div>' .. table.concat(outputs) .. '</div>'  
else  
return p.top(, args, map) .. tostring( p.mark(, args, map) ) .. p.bottom(, args, map)  
end  
end  

return p