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%Need to do this recursively
[ #xmlAttribute{value=Location} ] = xmerl_xpath:string("@name", Node),
[ #xmlAttribute{value=ID} ] = xmerl_xpath:string("@id", Node),
io:format(Location++", "++ID++"~n"),
print_locations(Rest).
get_weather(Location) ->
get_weather(Location, { Date_formatted, Rep }) ->
inets:start(),
Key = readapikey(),
URL = ?BASE_URL ++ ?WXFCS_LOCATIONID ++ Location ++ "?key=" ++ Key ++ "&res=3hourly",
Date_today = erlang:localtime(),
{ Date_formatted, Rep } = date_and_rep(Date_today),
[ #xmlAttribute{value=Temperature} ] ] = lists:map(fun(X) ->
[ #xmlAttribute{value=Temperature} ] ] = lists:map(
fun(X) ->
xmerl_xpath:string("//Period[@value='" ++ Date_formatted ++ "']/Rep[.='" ++ Rep ++ "']/@"++X, Xml)
end,
["D", "S", "G", "W", "T"]),
{Direction, Speed, Gust, Weather, Temperature}
catch
_:Reason ->
io:format("API Might be down~n"),
Reason
after
maybe_quit()
end.
DateAsString = io_lib:format("~4..0w-~2..0w-~2..0wZ", [Year, Month, Day]),
lists:flatten(DateAsString).
Date_as_string = io_lib:format("~4..0w-~2..0w-~2..0wZ", [Year, Month, Day]),
lists:flatten(Date_as_string).
nth_wrap(N, List) ->
Rem = N rem (length(List)),
if Rem > 0 ->
lists:nth(Rem, List);
Rem =:= 0 ->
1
true -> init:stop()
end.
true ->
init:stop()
end.
%For command line usage, from http://stackoverflow.com/a/8498073/208793
headsilose([Location, Heading]) ->
headsilose(Location, Heading).
headsilose(Location, Heading) ->
{Direction, Speed, Gust, Weather, Temperature} = get_weather(Location),
Weather_type = weather_types:weather_type(erlang:list_to_integer(Weather)),
Index = length(lists:takewhile(fun(X) -> X =/= Direction end, Compass))+1,
Index = length(lists:takewhile(fun(X) -> X =/= Wind_direction end, Compass))+1,
%Since heading is to direction and winds are from, opposite is -2 to +2, or to make it easier to wrap, +14 +18
%Since heading is to direction and winds are from, sidewinds are -5 to -3 and +3 to +5, or to make it easier to wrap, +14 +18
%And so on
HeadwindList = lists:seq(14,18),
SidewindList = lists:seq(3,5)++lists:seq(11,13),
TailwindList = lists:seq(6,10),
[Headwinds, Sidewinds, Tailwinds] = lists:map(fun(WindList) ->
lists:map(fun(X) ->
nth_wrap(Index+X, Compass) end,
WindList)
Headwind_list = lists:seq(14,18),
Sidewind_list = lists:seq(3,5)++lists:seq(11,13),
Tailwind_list = lists:seq(6,10),
lists:map(
fun(Wind_list) ->
lists:map(
fun(X) ->
nth_wrap(Index+X, Compass)
end,
Wind_list)
end,
[Headwind_list, Sidewind_list, Tailwind_list]).
[HeadwindList, SidewindList, TailwindList]),
[Headwind, Sidewind, Tailwind] = lists:map(fun(Winds) ->
lists:member(Heading, Winds) end,
io:format("Heads you lose!~n");
headwind;
Sidewind ->
io:format("It's a draw~n");
sidewind;
Tailwind ->
tailwind
end.
%Something like that?
%First two for command line usage
headsilose([Location]) ->
headsilose_(Location);
headsilose([Location, Route_choice]) ->
headsilose_(Location, Route_choice).
headsilose_(Location) ->
%If route choice not specified default to default!
%The other choice is "alternative_geometries", for now I think there is only ever one alternative so pick this first.
headsilose_(Location, "route_geometry").
headsilose_(Location, Route_choice) ->
Date_today = erlang:localtime(),
{ Date_formatted, Rep } = date_and_rep(Date_today),
{Direction, Speed, Gust, Weather, Temperature} = get_weather(Location, { Date_formatted, Rep }),
Weather_type = weather_types:weather_type(erlang:list_to_integer(Weather)),
[Headwinds, Sidewinds, Tailwinds] = build_list_of_wind_directions(Direction),
{_Checksum, Polyline} = osrm:read_route(Route_choice),
Polyline_decoded = polyline:decode(Polyline),
Distances_and_headings_list = convert_lats_longs_to_distance_heading(Polyline_decoded),
%A better representation than 360 or 1080 would be better now this is used here as well.
Journey = if Rep =:= "360" ->
journey(Distances_and_headings_list);
Rep =:= "1080" ->
reverse_journey(Distances_and_headings_list)
end,
%If now have a set of co-ords need to figure out distances and directions
Distances_and_wind_type_list = lists:map(
fun({Distance, Compass}) ->
Wind_type = head_side_or_tail_wind(Compass, [Headwinds, Sidewinds, Tailwinds]),
{Distance, Wind_type}
end,
Journey),
[Headwind_distances, Sidewind_distances, Tailwind_distances] = lists:map(
fun(Wind_type_filter) ->
lists:filter(
fun({_Distance, Wind_type}) ->
Wind_type == Wind_type_filter
end,
Distances_and_wind_type_list)
end,
[headwind, sidewind, tailwind]),
[Sum_of_headwind_distances, Sum_of_sidewind_distances, Sum_of_tailwind_distances] = lists:map(
fun(Wind_type) ->
lists:foldl(
fun({Distance, _Wind}, Sum) ->
Distance + Sum
end,
0,
Wind_type)
end,
[Headwind_distances, Sidewind_distances, Tailwind_distances]),
Total_distance = Sum_of_headwind_distances + Sum_of_sidewind_distances + Sum_of_tailwind_distances,
%Determine which is worse
if (Sum_of_headwind_distances > Sum_of_sidewind_distances) and (Sum_of_headwind_distances > Sum_of_tailwind_distances) ->
io:format("Heads you lose!~n");
(Sum_of_tailwind_distances > Sum_of_sidewind_distances) and (Sum_of_tailwind_distances > Sum_of_headwind_distances) ->
io:format("Tails you win!~n")
io:format("Tails you win!~n");
(Sum_of_sidewind_distances >= Sum_of_headwind_distances) and (Sum_of_sidewind_distances >= Sum_of_tailwind_distances) ->
io:format("It's a draw~n")
end,
Headwind_percent = round((Sum_of_headwind_distances/Total_distance)*100, 2),
Sidewind_percent = round((Sum_of_sidewind_distances/Total_distance)*100, 2),
Tailwind_percent = round((Sum_of_tailwind_distances/Total_distance)*100, 2),
io:format("~w% Headwind~n~w% Sidewind~n~w% Tailwind~n", [Headwind_percent, Sidewind_percent, Tailwind_percent]),
%
io:format("Direction: ~s~nSpeed: ~s mph~nGust: ~s mph~nWeather type: ~s~nTemperature: ~s deg C~n", [Direction, Speed, Gust, Weather_type, Temperature]).
%Need to read API key from file
readapikey() ->
{_Status, KeyB} = file:read_file(os:getenv("HOME") ++ "/.datapoint"),
string:strip(erlang:binary_to_list(KeyB),right,$\n).
{_Status, Key} = file:read_file(os:getenv("HOME") ++ "/.datapoint"),
string:strip(erlang:binary_to_list(Key),right,$\n).
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