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Use open-meteo.com API and other minor changes
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- Use open-meteo.com API for hopefully more accurate weather forecast
  and more flexibility in choosing the forecast model.
- Turn off antialiasing for all drawing as it tends to look better on
  the eink screen.
- Draw precipation hourly instead of daily.
  • Loading branch information
@msimberg
msimberg committed Nov 17, 2024
1 parent c0ef142 commit 8515219
Showing 1 changed file with 85 additions and 43 deletions.
128 changes: 85 additions & 43 deletions eink-weather.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -6,29 +6,57 @@ temp_image=$(mktemp /tmp/eink-weather.bmp.XXXXXXXX)

trap 'rm -rf "${temp_image}"' EXIT

pirateweather_api_url="https://api.pirateweather.net/forecast"
pirateweather_api_key="${EINK_WEATHER_PIRATEWEATHER_KEY}"
pirateweather_location="${EINK_WEATHER_PIRATEWEATHER_LOCATION}"
pirateweather_optional_params="?units=si"
pirateweather_request_url="${pirateweather_api_url}/${pirateweather_api_key}/${pirateweather_location}${pirateweather_optional_params}"
openmeteo_api_url="https://api.open-meteo.com/v1/forecast"
openmeteo_latitude="$(echo ${EINK_WEATHER_OPENMETEO_LOCATION} | cut -f1 -d,)"
openmeteo_longitude="$(echo ${EINK_WEATHER_OPENMETEO_LOCATION} | cut -f2 -d,)"
openmeteo_timezone="${EINK_WEATHER_OPENMETEO_TIMEZONE}"
openmeteo_request_url="${openmeteo_api_url}?latitude=${openmeteo_latitude}&longitude=${openmeteo_longitude}&timezone=${openmeteo_timezone}&current=apparent_temperature,weather_code&hourly=weather_code,precipitation&daily=apparent_temperature_max,apparent_temperature_min,sunrise,sunset"

declare -A wmo_codes
wmo_codes["0"]="Clear"
wmo_codes["1"]="Mostly clear"
wmo_codes["2"]="Partly cloudy"
wmo_codes["3"]="Overcast"
wmo_codes["45"]="Fog"
wmo_codes["48"]="Rime fog"
wmo_codes["51"]="Light drizzle"
wmo_codes["53"]="Drizzle"
wmo_codes["55"]="Heavy drizzle"
wmo_codes["56"]="Light freezing drizzle"
wmo_codes["57"]="Freezing drizzle"
wmo_codes["61"]="Light rain"
wmo_codes["63"]="Rain"
wmo_codes["65"]="Heavy rain"
wmo_codes["66"]="Light freezing rain"
wmo_codes["67"]="Freezing rain"
wmo_codes["71"]="Light snow"
wmo_codes["73"]="Snow"
wmo_codes["75"]="Heavy snow"
wmo_codes["77"]="Snow grains"
wmo_codes["80"]="Light showers"
wmo_codes["81"]="Showers"
wmo_codes["82"]="Heavy showers"
wmo_codes["85"]="Light snow showers"
wmo_codes["86"]="Snow showers"
wmo_codes["95"]="Thunderstorms"
wmo_codes["96"]="Light thunderstorms with hail"
wmo_codes["99"]="Thunderstorms with hail"

background_color="white"
foreground_color="black"

# Get the time.
time=$(date +"%H:%M")

# Get the pirateweather weather.
pirateweather_json=$(curl "${pirateweather_request_url}")
# Get the openmeteo weather.
openmeteo_json=$(curl "${openmeteo_request_url}")

pirateweather_current_temperature=$(echo ${pirateweather_json} | jq '.currently.temperature')
pirateweather_current_temperature=$(printf %.0f ${pirateweather_current_temperature})
pirateweather_current_summary=$(echo ${pirateweather_json} | jq -r '.currently.summary')
pirateweather_hourly_summary=$(echo ${pirateweather_json} | jq -r '.hourly.summary')
pirateweather_daily_summary=$(echo ${pirateweather_json} | jq -r '.daily.summary')
openmeteo_current_temperature=$(echo ${openmeteo_json} | jq '.current.apparent_temperature')
openmeteo_current_temperature=$(printf %.0f ${openmeteo_current_temperature})
openmeteo_current_summary=${wmo_codes[$(echo ${openmeteo_json} | jq -r '.current.weather_code')]}

sunrise_today=$(date --date=@$(echo ${pirateweather_json} | jq -r '.daily.data[0].sunriseTime') +'%H:%M')
sunset_today=$(date --date=@$(echo ${pirateweather_json} | jq -r '.daily.data[0].sunsetTime') +'%H:%M')
sunrise_today=$(date --date=$(echo ${openmeteo_json} | jq -r '.daily.sunrise[0]') +'%H:%M')
sunset_today=$(date --date=$(echo ${openmeteo_json} | jq -r '.daily.sunset[0]') +'%H:%M')

# Construct the image to be shown.
# Background.
Expand All @@ -37,9 +65,35 @@ convert \
xc:${background_color} \
bmp:${temp_image}

# Precipitation. Draw first to allow text to be drawn on top of the bars with
# outlines.
n_hours=$((24 * 7))
rectangles=""
precipitation=( $(echo ${openmeteo_json} | jq '.hourly.precipitation[]') )
for i in $(seq 0 $((n_hours - 1))); do
precip_intensity=${precipitation[$i]} # $(echo ${precipitation} | jq ".[${i}]")
bar_top=$(echo "scale=5; 448 - ($precip_intensity * 10)" | bc)
bar_left=$(echo "scale=5; $i * (600 / $n_hours)" | bc)
bar_bottom=448
bar_right=$(echo "scale=5; $bar_left + (600 / $n_hours)" | bc)
rectangles+=" rectangle ${bar_left},${bar_top}, ${bar_right},${bar_bottom}"
done
convert \
"${temp_image}" \
+antialias \
-size 600x448 \
xc:transparent \
-fill ${foreground_color} \
-stroke ${background_color} \
-strokewidth 1.0 \
-draw "${rectangles}" \
-compose over -composite \
bmp:${temp_image}

# Date, sunrise, and sunset.
convert \
${temp_image} \
+antialias \
-background none \
-gravity north \
-fill ${foreground_color} \
Expand All @@ -53,6 +107,7 @@ convert \
# Time.
convert \
${temp_image} \
+antialias \
-background none \
-gravity north \
-fill ${foreground_color} \
Expand All @@ -63,23 +118,25 @@ convert \
-compose over -composite \
bmp:${temp_image}

# Darksky weather. Temperature and current weather.
# Current temperature and weather.
convert \
${temp_image} \
+antialias \
-background none \
-gravity north \
-fill ${foreground_color} \
-font "Iosevka-Bold" \
-size 600x60 \
label:"${pirateweather_current_temperature}° ${pirateweather_hourly_summary}" \
label:"${openmeteo_current_temperature}° ${openmeteo_current_summary}" \
-geometry +0+280 \
-compose over -composite \
bmp:${temp_image}

# Weekly weather
weekdays=$(echo ${pirateweather_json} | jq '.daily.data[].time' | head -n 7 | xargs -I '{}' date --date=@'{}' +' %a' | tr -d '\n' | sed 's|^ ||')
# Weekly weather.
weekdays=$(echo ${openmeteo_json} | jq '.daily.time[]' | head -n 7 | xargs -I '{}' date --date='{}' +' %a' | tr -d '\n' | sed 's|^ ||')
convert \
${temp_image} \
+antialias \
-background none \
-gravity north \
-fill ${foreground_color} \
Expand All @@ -88,11 +145,12 @@ convert \
label:"\\${weekdays}" \
-geometry +0+340 \
-compose over -composite \
bmp:${temp_image}
bmp:${temp_image}

weekday_temperatures_high=$(echo ${pirateweather_json} | jq '.daily.data[].temperatureHigh' | head -n 7 | xargs -I '{}' printf '%6.0f' '{}' | tr -d '\n' | sed 's|^ ||')
weekday_temperatures_high=$(echo ${openmeteo_json} | jq '.daily.apparent_temperature_max[]' | head -n 7 | xargs -I '{}' printf '%6.0f' '{}' | tr -d '\n' | sed 's|^ ||')
convert \
${temp_image} \
+antialias \
-background none \
-gravity north \
-fill ${foreground_color} \
Expand All @@ -101,10 +159,11 @@ convert \
label:"\\${weekday_temperatures_high}" \
-geometry +0+370 \
-compose over -composite \
bmp:${temp_image}
weekday_temperatures_low=$(echo ${pirateweather_json} | jq '.daily.data[].temperatureLow' | head -n 7 | xargs -I '{}' printf '%6.0f' '{}' | tr -d '\n' | sed 's|^ ||')
bmp:${temp_image}
weekday_temperatures_low=$(echo ${openmeteo_json} | jq '.daily.apparent_temperature_min[]' | head -n 7 | xargs -I '{}' printf '%6.0f' '{}' | tr -d '\n' | sed 's|^ ||')
convert \
${temp_image} \
+antialias \
-background none \
-gravity north \
-fill ${foreground_color} \
Expand All @@ -113,28 +172,11 @@ convert \
label:"\\${weekday_temperatures_low}" \
-geometry +0+400 \
-compose over -composite \
bmp:${temp_image}

for i in {0..6}; do
precip_intensity=$(echo ${pirateweather_json} | jq ".daily.data[${i}].precipIntensity")
bar_top=$(echo "scale=5; 448 - ($precip_intensity * 100)" | bc)
bar_left=$((90 + i * 78))
bar_bottom=448
bar_right=$((bar_left + 10))
convert \
"${temp_image}" \
-size 600x448 \
xc:transparent \
-fill ${foreground_color} \
-stroke ${background_color} \
-draw "rectangle ${bar_left},${bar_top}, ${bar_right},${bar_bottom}" \
-compose over -composite \
bmp:${temp_image}
done
bmp:${temp_image}

# Invert if night.
sunrise_seconds=$(date --date=@$(echo ${pirateweather_json} | jq -r '.daily.data[0].sunriseTime') +'%s')
sunset_seconds=$(date --date=@$(echo ${pirateweather_json} | jq -r '.daily.data[0].sunsetTime') +'%s')
sunrise_seconds=$(date --date=$(echo ${openmeteo_json} | jq -r '.daily.sunrise[0]') +'%s')
sunset_seconds=$(date --date=$(echo ${openmeteo_json} | jq -r '.daily.sunset[0]') +'%s')
now_seconds=$(date +'%s')
if ((now_seconds <= sunrise_seconds || sunset_seconds <= now_seconds)); then
convert \
Expand All @@ -144,7 +186,7 @@ if ((now_seconds <= sunrise_seconds || sunset_seconds <= now_seconds)); then
fi

image_color="black"
if ((pirateweather_current_temperature >= 20)); then
if ((openmeteo_current_temperature >= 20)); then
image_color="red"
fi

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