Модуль:Coordinates

--[[ This module is intended to replace the functionality of Шаблон:Coord and related templates. So. It provides several methods, including

 : General function formatting and displaying coordinate values.

 : Simple function for converting decimal degree values to DMS format.

 : Simple function for converting DMS format to decimal degree format.

]]

math_mod = require( "Module:Math" ); globalFrame = nil

coordinates = {};

--[[ Helper function, replacement for Шаблон:Coord/display/title ]] function displaytitle (s, notes)

   local l = "Координаты: " .. s
   local co = '';
   return '' .. co .. '';

end

--[[ Helper function, Replacement for Шаблон:Coord/display/inline ]] function displayinline (s, notes)

   return s .. notes

end

--Helper function, used in detecting DMS formatting local dmsTest = function(first, second)

   local concatenated = first:upper() .. second:upper();

   if concatenated == "NE" or concatenated == "NW" or concatenated == "SE" or concatenated == "SW" or
       concatenated == "EN" or concatenated == "WN" or concatenated == "ES" or concatenated == "WS" then
       return true;
   end
   return false;

end

--[[ parseDec

Transforms decimal format latitude and longitude into the a structure to be used in displaying coordinates ]] function parseDec( lat, long, format )

   local coordinateSpec = {}
   local errors = {}

   if long == "" or long == nil then
       return nil, Шаблон:"parseDec", "Пропущена долгота"
   end

   errors = validate( lat, nil, nil, long, nil, nil, 'parseDec', false );
   coordinateSpec["dec-lat"]  = lat;
   coordinateSpec["dec-long"] = long;

   local mode = coordinates.determineMode( lat, long );
   coordinateSpec["dms-lat"]  = convert_dec2dms( lat, " с. ш.", " ю. ш.", mode)  -- Шаблон:Coord/dec2dms
   coordinateSpec["dms-long"] = convert_dec2dms( long, " в. д.", " з. д.", mode)  -- Шаблон:Coord/dec2dms

   if format ~= "" then
       coordinateSpec.default = format
   else
       coordinateSpec.default = "dec"
   end

   return coordinateSpec, errors

end

--Helper function, handle optional args. function optionalArg(arg, suplement)

   if arg ~= nil and arg ~= "" then
       return string.format( "%02d", tonumber( arg ) ) .. suplement
   end
   return ""

end

--[[ parseDMS

Transforms degrees, minutes, seconds format latitude and longitude into the a structure to be used in displaying coordinates ]] function parseDMS( lat_d, lat_m, lat_s, lat_f, long_d, long_m, long_s, long_f, format )

   local coordinateSpec = {}
   local errors = {}

   lat_f = lat_f:upper();
   long_f = long_f:upper();

   -- Check if specified backward
   if lat_f == 'E' or lat_f == 'W' then
       local t_d, t_m, t_s, t_f;
       t_d = lat_d;
       t_m = lat_m;
       t_s = lat_s;
       t_f = lat_f;
       lat_d = long_d;
       lat_m = long_m;
       lat_s = long_s;
       lat_f = long_f;
       long_d = t_d;
       long_m = t_m;
       long_s = t_s;
       long_f = t_f;
   end

   errors = validate( lat_d, lat_m, lat_s, long_d, long_m, long_s, 'parseDMS', true );
   if long_d == nil or long_d == "" then
       table.insert(errors, {"parseDMS", "Пропущена долгота" })
   end

   coordinateSpec["dec-lat"]  = convert_dms2dec(lat_f, lat_d, lat_m, lat_s) -- Шаблон:Coord/dms2dec
   coordinateSpec["dec-long"] = convert_dms2dec(long_f, long_d, long_m, long_s) -- Шаблон:Coord/dms2dec

   if lat_m == nil and lat_s == nil and long_m == nil and long_s == nil and #errors == 0 
       or math_mod._precision( lat_d ) > 0 or math_mod._precision( long_d ) > 0 then
           if lat_f:upper() == 'S' then
               lat_d = '-' .. lat_d;
               lat_f = " ю. ш.";
           else
               lat_f = " с. ш.";
           end
           if long_f:upper() == 'W' then
               long_d = '-' .. long_d;
               long_f = " з. д.";
           else
               long_f = " в. д.";
           end

           return parseDec( lat_d, long_d, format );
   end

   if lat_f:upper() == 'S' then
       lat_f = " ю. ш.";
   else
       lat_f = " с. ш.";
   end

   if long_f:upper() == 'E' then
       long_f = " в. д.";
   else
       long_f = " з. д.";
   end

   coordinateSpec["dms-lat"]  = lat_d.."°"..optionalArg(lat_m,"′") .. optionalArg(lat_s,"″") .. lat_f
   coordinateSpec["dms-long"] = long_d.."°"..optionalArg(long_m,"′") .. optionalArg(long_s,"″") .. long_f

   if format ~= "" then
       coordinateSpec.default = format
   else
       coordinateSpec.default = "dms"
   end

   return coordinateSpec, errors

end

--[[ specPrinter

Output formatter. Takes the structure generated by either parseDec or parseDMS and formats it for inclusion on Wikipedia. ]] function specPrinter(args, coordinateSpec)

   local uriComponents = coordinateSpec["param"]
   if uriComponents == "" then
       -- RETURN error, should never be empty or nil
       return "Ошибка: не задан param"
   end
   if args["name"] ~= "" and args["name"] ~= nil then
       uriComponents = uriComponents .. "&title=" .. mw.uri.encode(coordinateSpec["name"])
   end

   local geodmshtml = ''
            .. '' .. coordinateSpec["dms-lat"] .. ' '
            .. '' ..coordinateSpec["dms-long"] .. ''
            .. ''

   local lat = tonumber( coordinateSpec["dec-lat"] ) or 0
   if lat < 0 then
       -- FIXME this breaks the pre-existing precision
       geodeclat = coordinateSpec["dec-lat"]:sub(2) .. "° ю. ш."
   else
       geodeclat = (coordinateSpec["dec-lat"] or 0) .. "° с. ш."
   end

   local long = tonumber( coordinateSpec["dec-long"] ) or 0
   if long < 0 then
       -- FIXME does not handle unicode minus
       geodeclong = coordinateSpec["dec-long"]:sub(2) .. "° з. д."
   else
       geodeclong = (coordinateSpec["dec-long"] or 0) .. "° в. д."
   end

   local geodechtml = ''
            .. geodeclat .. ' '
            .. geodeclong
            .. ''

   local geonumhtml = ''
            .. coordinateSpec["dec-lat"] .. '; '
            .. coordinateSpec["dec-long"]
            .. ''

   local inner;
   inner = '' .. geodmshtml .. ''
               .. ''
               .. '';

   if args["name"] == "" or args["name"] == nil then
       inner = inner .. geodechtml
               .. ' / ' .. geonumhtml .. ''
   else
       inner = inner .. '' .. geodechtml
               .. ' / ' .. geonumhtml .. ''
               .. ' ('
               .. args["name"] .. ')'
   end

   local result = '' .. globalFrame:preprocess(
       '[//tools.wmflabs.org/geohack/geohack.php?language=ru&pagename=%D0%9C%D0%BE%D0%B4%D1%83%D0%BB%D1%8C:Coordinates&params=' ..
       uriComponents .. ' ' .. inner .. ']')

   local globe = string.lower(args.globe or )
   local scale = tonumber(args.scale or '30000')
   local nogoogle = string.lower(args.nogoogle or )
   local noosm = string.lower(args.noosm or )
   local yandex = string.lower(args.yandex or )

   if globe ==  then
       if nogoogle ==  then
           result = result .. ' '
       end
       if noosm ==  then
           result = result .. ' '
       end

       if yandex ~=  then
           result = result .. ' '
       end
   end

   result = result .. ''

   return result

end

--[[ Formats any error messages generated for display ]] function errorPrinter(errors)

   local result = ""
   for i,v in ipairs(errors) do
       local errorHTML = ''
       result = result .. errorHTML .. "
"
   end
   return result

end

--[[ Determine the required CSS class to display coordinates

Usually geo-nondefault is hidden by CSS, unless a user has overridden this for himself default is the mode as specificied by the user when calling the Шаблон:Coord template mode is the display mode (dec or dms) that we will need to determine the css class for ]] function displayDefault(default, mode)

   if default == "" then
       default = "dec"
   end

   if default == mode then
       return "geo-default"
   else
       return "geo-nondefault"
   end

end

--[[ Check the input arguments for coord to determine the kind of data being provided and then make the necessary processing. ]] function formatTest(args)

   local result, errors;
   local primary = false;

   local param = {}

   if args[1] == "" then
       -- no lat logic
       return errorPrinter( Шаблон:"formatTest", "Пропущена широта" )
   elseif args[4] == "" and args[5] == "" and args[6] == "" then
       -- dec logic
       result, errors = parseDec( args[1], args[2], args['format'] )
       if result == nil then
           return errorPrinter( errors );
       end
       param = { args[1], "N", args[2], "E", args[3] };
   elseif dmsTest(args[4], args[8]) then
       -- dms logic
       result, errors = parseDMS( args[1], args[2], args[3], args[4],
           args[5], args[6], args[7], args[8], args['format'] )
       param = { args[1], args[2], args[3], args[4], args[5],
           args[6], args[7], args[8], args[9] };
       if args[10] ~=  then
           table.insert( errors, { 'formatTest', 'Неожиданные дополнительные параметры' } );
       end
   elseif dmsTest(args[3], args[6]) then
       -- dm logic
       result, errors = parseDMS( args[1], args[2], nil, args[3],
           args[4], args[5], nil, args[6], args['format'] )
       param = { args[1], args[2], args[3], args[4], args[5], args[6], args[7] };
       if args[8] ~=  then
           table.insert( errors, { 'formatTest', 'Неожиданные дополнительные параметры' } );
       end
   elseif dmsTest(args[2], args[4]) then
       -- d logic
       result, errors = parseDMS( args[1], nil, nil, args[2],
           args[3], nil, nil, args[4], args['format'] )
       param = { args[1], args[2], args[3], args[4], args[5] };
       if args[6] ~=  then
           table.insert( errors, { 'formatTest', 'Неожиданные дополнительные параметры' } );
       end
   else
       -- Error
       return errorPrinter( Шаблон:"formatTest", "Неизвестный формат аргумента" )
   end
   result.name     = args["name"]

   local last = table.getn (param)
   if param[last] ==  then
       table.remove(param, last)
   end

   local extra_param = { 'dim', 'globe', 'scale', 'region', 'source', 'type' }
   for _, v in ipairs( extra_param ) do
       if (args[v] or ) ~=  then
           table.insert( param, v .. ':' .. args[v] );
       end
   end

   result.param = table.concat( param , '_' );

   if #errors == 0 then
       return specPrinter( args, result )
   else
       return specPrinter( args, result ) .. " " .. errorPrinter(errors) .. ;
   end

end

--[[ Helper function, convert decimal latitude or longitude to degrees, minutes, and seconds format based on the specified precision. ]] function convert_dec2dms(coordinate, firstPostfix, secondPostfix, precision)

   local coord = tonumber(coordinate) or 0
   local postfix
   if coord >= 0 then
       postfix = firstPostfix
   else
       postfix = secondPostfix
   end

   precision = precision:lower();
   if precision == "dms" then
       return convert_dec2dms_dms( math.abs( coord ) ) .. postfix;
   elseif precision == "dm" then
       return convert_dec2dms_dm( math.abs( coord ) ) .. postfix;
   elseif precision == "d" then
       return convert_dec2dms_d( math.abs( coord ) ) .. postfix;
   end

end

--Helper function, convert decimal to degrees function convert_dec2dms_d(coordinate)

   local d = math_mod._round( coordinate, 0 ) .. "°"
   return d .. ""

end

--Helper function, convert decimal to degrees and minutes function convert_dec2dms_dm(coordinate)

   coordinate = math_mod._round( coordinate * 60, 0 );
   local m = coordinate % 60;
   coordinate = math.floor( (coordinate - m) / 60 );
   local d = coordinate % 360 .."°"

   return d .. string.format( "%02d′", m )

end

--Helper function, convert decimal to degrees, minutes, and seconds function convert_dec2dms_dms(coordinate)

   coordinate = math_mod._round( coordinate * 60 * 60, 0 );
   local s = coordinate % 60
   coordinate = math.floor( (coordinate - s) / 60 );
   local m = coordinate % 60
   coordinate = math.floor( (coordinate - m) / 60 );
   local d = coordinate % 360 .."°"

   return d .. string.format( "%02d′", m ) .. string.format( "%02d″", s )

end

--[[ Convert DMS format into a N or E decimal coordinate ]] function convert_dms2dec(direction, degrees_str, minutes_str, seconds_str)

   local degrees = tonumber(degrees_str) or 0
   local minutes = tonumber(minutes_str) or 0
   local seconds = tonumber(seconds_str) or 0

   local factor
   direction = mw.ustring.gsub(direction, '^[ ]*(.-)[ ]*$', '%1');
   if direction == "S" or direction == "W" then
       factor = -1
   else
       factor = 1
   end

   local precision = 0
   if seconds_str ~= nil and seconds_str ~=  then
       precision = 5 + math.max( math_mod._precision(seconds_str), 0 );
   elseif minutes_str ~= nil and minutes_str ~=  then
       precision = 3 + math.max( math_mod._precision(minutes_str), 0 );
   else
       precision = math.max( math_mod._precision(degrees_str), 0 );
   end

   local decimal = factor * (degrees+(minutes+seconds/60)/60)
   return string.format( "%." .. precision .. "f", decimal ) -- not tonumber since this whole thing is string based.

end

--[[ Checks input values to for out of range errors. ]] function validate( lat_d, lat_m, lat_s, long_d, long_m, long_s, source, strong )

   local errors = {};
   lat_d = tonumber( lat_d ) or 0;
   lat_m = tonumber( lat_m ) or 0;
   lat_s = tonumber( lat_s ) or 0;
   long_d = tonumber( long_d ) or 0;
   long_m = tonumber( long_m ) or 0;
   long_s = tonumber( long_s ) or 0;

   if strong then
       if lat_d < 0 then
           table.insert(errors, {source, "градусы широты  < 0"})
       end
       if long_d < 0 then
           table.insert(errors, {source, "градусы долготы < 0"})
       end
       --[[
       #coordinates is inconsistent about whether this is an error.  If globe: is
       specified, it won't error on this condition, but otherwise it will.

       For not simply disable this check.

       if long_d > 180 then
           table.insert(errors, {source, "longitude degrees > 180 with hemisphere flag"})
       end
       ]]
   end

   if lat_d > 90 then
       table.insert(errors, {source, "градусы широты > 90"})
   end
   if lat_d < -90 then
       table.insert(errors, {source, "градусы широты < -90"})
   end
   if lat_m >= 60 then
       table.insert(errors, {source, "минуты широты >= 60"})
   end
   if lat_m < 0 then
       table.insert(errors, {source, "минуты широты < 0"})
   end
   if lat_s >= 60 then
       table.insert(errors, {source, "секунды широты >= 60"})
   end
   if lat_s < 0 then
       table.insert(errors, {source, "секунды широты < 0"})
   end
   if long_d >= 360 then
       table.insert(errors, {source, "градусы долготы >= 360"})
   end
   if long_d <= -360 then
       table.insert(errors, {source, "градусы долготы <= -360"})
   end
   if long_m >= 60 then
       table.insert(errors, {source, "минуты долготы >= 60"})
   end
   if long_m < 0 then
       table.insert(errors, {source, "минуты долготы < 0"})
   end
   if long_s >= 60 then
       table.insert(errors, {source, "секунды долготы >= 60"})
   end
   if long_s < 0 then
       table.insert(errors, {source, "секунды долготы < 0"})
   end

   return errors;

end

--[[ dec2dms

Wrapper to allow templates to call dec2dms directly.

Usage:

   Шаблон:Invoke:Coordinates

decimal_coordinate is converted to DMS format. If positive, the positive_suffix is appended (typical N or E), if negative, the negative suffix is appended. The specified precision is one of 'D', 'DM', or 'DMS' to specify the level of detail to use. ]] function coordinates.dec2dms(frame)

   globalFrame = frame
   local coordinate = frame.args[1]
   local firstPostfix = frame.args[2]
   local secondPostfix = frame.args[3]
   local precision = frame.args[4]

   return convert_dec2dms(coordinate, firstPostfix, secondPostfix, precision)

end

--[[ Helper function to determine whether to use D, DM, or DMS format depending on the precision of the decimal input. ]] function coordinates.determineMode( value1, value2 )

   local precision = math.max( math_mod._precision( value1 ), math_mod._precision( value2 ) );
   if precision <= 0 then
       return 'd'
   elseif precision <= 2 then
       return 'dm';
   else
       return 'dms';
   end

end

--[[ dms2dec

Wrapper to allow templates to call dms2dec directly.

Usage:

   Шаблон:Invoke:Coordinates

Converts DMS values specified as degrees, minutes, seconds too decimal format. direction_flag is one of N, S, E, W, and determines whether the output is positive (i.e. N and E) or negative (i.e. S and W). ]] function coordinates.dms2dec(frame)

   globalFrame = frame
   local direction = frame.args[1]
   local degrees = frame.args[2]
   local minutes = frame.args[3]
   local seconds = frame.args[4]

   return convert_dms2dec(direction, degrees, minutes, seconds)

end

--[[ coord

Main entry point for Lua function to replace Шаблон:Coord

Usage:

   Шаблон:Invoke:Coordinates
   Шаблон:Invoke:Coordinates
   Шаблон:Invoke:Coordinates
   ...

   Refer to Шаблон:Coord documentation page for many additional parameters and
   configuration options.

Note: This function provides the visual display elements of Шаблон:Coord. In order to load coordinates into the database, the parser function must also be called, this is done automatically in the Lua version of Шаблон:Coord. ]] function coordinates.coord(frame)

   globalFrame = frame
   local args = frame.args
   if args[1] == nil then
       local pFrame = frame:getParent();
       args = pFrame.args;
       for k,v in pairs( frame.args ) do
           args[k] = v;
       end
   end

   for i=1,10 do
       if args[i] == nil then
           args[i] = ""
       else
           args[i] = args[i]:match( '^%s*(.-)%s*$' );  --remove whitespace
       end
   end
   args['format'] = args['format'] or ;

   local contents = formatTest(args)
   local Notes = args.notes or ""
   local Display = string.lower(args.display or "inline")
   if Display ==  then
       Display = 'inline';
   end

   local text = 
   if string.find( Display, 'inline' ) ~= nil or Display == 'i' or
           Display == 'it' or Display == 'ti' then
       text = displayinline(contents, Notes)
   end
   if string.find( Display, 'title' ) ~= nil or Display == 't' or
           Display == 'it' or Display == 'ti' then
       text = text .. displaytitle(contents, Notes)
   end
   return text

end

return coordinates