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|
defmodule Nola.Plugins.Coronavirus do
require Logger
NimbleCSV.define(CovidCsv, separator: ",", escape: "\"")
@moduledoc """
# Corona Virus
Données de [Johns Hopkins University](https://github.com/CSSEGISandData/COVID-19) et mises à jour a peu près tous les jours.
* `!coronavirus [France | Country]`: :-)
* `!coronavirus`: top 10 confirmés et non guéris
* `!coronavirus confirmés`: top 10 confirmés
* `!coronavirus morts`: top 10 morts
* `!coronavirus soignés`: top 10 soignés
"""
def irc_doc, do: @moduledoc
def start_link() do
GenServer.start_link(__MODULE__, [], name: __MODULE__)
end
def init(_) do
{:ok, _} = Registry.register(Nola.PubSub, "trigger:coronavirus", plugin: __MODULE__)
{:ok, nil, {:continue, :init}}
:ignore
end
def handle_continue(:init, _) do
date = Date.add(Date.utc_today(), -2)
{data, _} = fetch_data(%{}, date)
{data, next} = fetch_data(data)
:timer.send_after(next, :update)
{:noreply, %{data: data}}
end
def handle_info(:update, state) do
{data, next} = fetch_data(state.data)
:timer.send_after(next, :update)
{:noreply, %{data: data}}
end
def handle_info(
{:irc, :trigger, "coronavirus", m = %Nola.Message{trigger: %{type: :bang, args: args}}},
state
)
when args in [
[],
["morts"],
["confirmés"],
["soignés"],
["malades"],
["n"],
["nmorts"],
["nsoignés"],
["nconfirmés"]
] do
{field, name} =
case args do
["confirmés"] -> {:confirmed, "confirmés"}
["morts"] -> {:deaths, "morts"}
["soignés"] -> {:recovered, "soignés"}
["nmorts"] -> {:new_deaths, "nouveaux morts"}
["nconfirmés"] -> {:new_confirmed, "nouveaux confirmés"}
["n"] -> {:new_current, "nouveaux malades"}
["nsoignés"] -> {:new_recovered, "nouveaux soignés"}
_ -> {:current, "malades"}
end
IO.puts("FIELD #{inspect(field)}")
field_evol = String.to_atom("new_#{field}")
sorted =
state.data
|> Enum.filter(fn {_, %{region: region}} -> region == true end)
|> Enum.map(fn {location, data} ->
{location, Map.get(data, field, 0), Map.get(data, field_evol, 0)}
end)
|> Enum.sort_by(fn {_, count, _} -> count end, &>=/2)
|> Enum.take(10)
|> Enum.with_index()
|> Enum.map(fn {{location, count, evol}, index} ->
ev =
if String.starts_with?(name, "nouveaux") do
""
else
" (#{Util.plusminus(evol)})"
end
"##{index + 1}: #{location} #{count}#{ev}"
end)
|> Enum.intersperse(" - ")
|> Enum.join()
m.replyfun.("CORONAVIRUS TOP10 #{name}: " <> sorted)
{:noreply, state}
end
def handle_info(
{:irc, :trigger, "coronavirus",
m = %Nola.Message{trigger: %{type: :bang, args: location}}},
state
) do
location = Enum.join(location, " ") |> String.downcase()
if data = Map.get(state.data, location) do
m.replyfun.(
"coronavirus: #{location}: " <>
"#{data.current} malades (#{Util.plusminus(data.new_current)}), " <>
"#{data.confirmed} confirmés (#{Util.plusminus(data.new_confirmed)}), " <>
"#{data.deaths} morts (#{Util.plusminus(data.new_deaths)}), " <>
"#{data.recovered} soignés (#{Util.plusminus(data.new_recovered)}) (@ #{data.update})"
)
end
{:noreply, state}
end
def handle_info(
{:irc, :trigger, "coronavirus",
m = %Nola.Message{trigger: %{type: :query, args: location}}},
state
) do
m.replyfun.("https://github.com/CSSEGISandData/COVID-19")
{:noreply, state}
end
# 1. Try to fetch data for today
# 2. Fetch yesterday if no results
defp fetch_data(current_data, date \\ nil) do
now = Date.utc_today()
url = fn date ->
"https://github.com/CSSEGISandData/COVID-19/raw/master/csse_covid_19_data/csse_covid_19_daily_reports/#{date}.csv"
end
request_date = date || now
Logger.debug("Coronavirus check date: #{inspect(request_date)}")
{:ok, date_s} =
Timex.format(
{request_date.year, request_date.month, request_date.day},
"%m-%d-%Y",
:strftime
)
cur_url = url.(date_s)
Logger.debug("Fetching URL #{cur_url}")
case HTTPoison.get(cur_url, [], follow_redirect: true) do
{:ok, %HTTPoison.Response{status_code: 200, body: csv}} ->
# Parse CSV update data
data =
csv
|> CovidCsv.parse_string()
|> Enum.reduce(%{}, fn line, acc ->
case line do
# FIPS,Admin2,Province_State,Country_Region,Last_Update,Lat,Long_,Confirmed,Deaths,Recovered,Active,Combined_Key
# 0FIPS,Admin2,Province_State,Country_Region,Last_Update,Lat,Long_,Confirmed,Deaths,Recovered,Active,Combined_Key,Incidence_Rate,Case-Fatality_Ratio
[
_,
_,
state,
region,
update,
_lat,
_lng,
confirmed,
deaths,
recovered,
_active,
_combined_key,
_incidence_rate,
_fatality_ratio
] ->
state = String.downcase(state)
region = String.downcase(region)
confirmed = String.to_integer(confirmed)
deaths = String.to_integer(deaths)
recovered = String.to_integer(recovered)
current = confirmed - recovered - deaths
entry = %{
update: update,
confirmed: confirmed,
deaths: deaths,
recovered: recovered,
current: current,
region: region
}
region_entry =
Map.get(acc, region, %{
update: nil,
confirmed: 0,
deaths: 0,
recovered: 0,
current: 0
})
region_entry = %{
update: region_entry.update || update,
confirmed: region_entry.confirmed + confirmed,
deaths: region_entry.deaths + deaths,
current: region_entry.current + current,
recovered: region_entry.recovered + recovered,
region: true
}
changes =
if old = Map.get(current_data, region) do
%{
new_confirmed: region_entry.confirmed - old.confirmed,
new_current: region_entry.current - old.current,
new_deaths: region_entry.deaths - old.deaths,
new_recovered: region_entry.recovered - old.recovered
}
else
%{new_confirmed: 0, new_current: 0, new_deaths: 0, new_recovered: 0}
end
region_entry = Map.merge(region_entry, changes)
acc = Map.put(acc, region, region_entry)
acc =
if state && state != "" do
Map.put(acc, state, entry)
else
acc
end
other ->
Logger.info("Coronavirus line failed: #{inspect(line)}")
acc
end
end)
Logger.info("Updated coronavirus database")
{data, :timer.minutes(60)}
{:ok, %HTTPoison.Response{status_code: 404}} ->
Logger.debug("Corona 404 #{cur_url}")
date = Date.add(date || now, -1)
fetch_data(current_data, date)
other ->
Logger.error("Coronavirus: Update failed #{inspect(other)}")
{current_data, :timer.minutes(5)}
end
end
end
|
