display weather & resize

epd/epd.go

@@ -317,5 +317,5 @@ func (e *EPD) sendImg(img image.Image) {
 }
 
 func isdark(r, g, b, _ uint32) bool {
-	return r < 255 || g < 255 || b < 255
+	return r < 65535 || g < 65535 || b < 65535
 }

img.go

@@ -2,43 +2,52 @@ package main
 
 import (
 	"context"
+	"embed"
 	"fmt"
 	"github.com/Crocmagnon/display-epaper/epd"
 	"github.com/Crocmagnon/display-epaper/fete"
 	"github.com/Crocmagnon/display-epaper/transports"
+	"github.com/Crocmagnon/display-epaper/weather"
 	"github.com/llgcode/draw2d"
 	"github.com/llgcode/draw2d/draw2dimg"
 	"image"
 	"image/color"
+	"log"
+	"math"
 	"strconv"
+	"strings"
 	"time"
 )
 
-func getBlack(
-	ctx context.Context,
-	nowFunc func() time.Time,
-	transportsClient *transports.Client,
-	feteClient *fete.Client,
-) (*image.RGBA, error) {
+//go:embed icons
+var icons embed.FS
+
+const (
+	leftX  = 20
+	rightX = 530
+)
+
+func getBlack(ctx context.Context, nowFunc func() time.Time, transportsClient *transports.Client, feteClient *fete.Client, weatherClient *weather.Client) (*image.RGBA, error) {
 	bus, err := transportsClient.GetTCLPassages(ctx, 290)
 	if err != nil {
-		return nil, fmt.Errorf("getting bus: %w", err)
+		log.Println("error getting bus:", err)
 	}
 	tram, err := transportsClient.GetTCLPassages(ctx, 34068)
 	if err != nil {
-		return nil, fmt.Errorf("getting tram: %w", err)
+		log.Println("error getting tram:", err)
 	}
 	velovRoc, err := transportsClient.GetVelovStation(ctx, 10044)
 	if err != nil {
-		return nil, fmt.Errorf("getting velov: %w", err)
+		log.Println("error getting velov:", err)
 	}
-
 	fetes, err := feteClient.GetFete(ctx, nowFunc())
 	if err != nil {
-		return nil, fmt.Errorf("getting fetes: %w", err)
+		log.Println("error getting fetes:", err)
+	}
+	wthr, err := weatherClient.GetWeather(ctx)
+	if err != nil {
+		log.Println("error getting weather:", err)
 	}
-
-	_ = fetes
 
 	img := newWhite()
 
@@ -48,35 +57,93 @@ func getBlack(
 	gc.SetFillColor(color.RGBA{255, 255, 255, 255})
 	gc.SetStrokeColor(color.RGBA{0, 0, 0, 255})
 
-	rect(gc, 0, 0, 800, 480)
-
-	drawTCL(gc, bus, 30)
-	drawTCL(gc, tram, 180)
+	drawTCL(gc, bus, 55)
+	drawTCL(gc, tram, 190)
 	drawVelov(gc, velovRoc, 350)
-	drawDateFete(gc, fetes, nowFunc())
+	drawDate(gc, nowFunc())
+	drawFete(gc, fetes)
+	drawWeather(gc, wthr)
 
 	return img, nil
 }
 
-func drawVelov(gc *draw2dimg.GraphicContext, station *transports.Station, yOffset float64) {
-	x := float64(600)
-	text(gc, station.Name, 15, x, yOffset)
-	text(gc, fmt.Sprintf("V : %v - P : %v", station.BikesAvailable, station.DocksAvailable), 15, x, yOffset+30)
+func drawWeather(gc *draw2dimg.GraphicContext, wthr *weather.Prevision) {
+	if wthr == nil {
+		return
+	}
+
+	if len(wthr.Daily) == 0 || len(wthr.Daily[0].Weather) == 0 {
+		log.Println("missing daily or daily weather")
+		return
+	}
+
+	daily := wthr.Daily[0]
+	dailyWeather := daily.Weather[0]
+	err := drawWeatherIcon(gc, dailyWeather)
+	if err != nil {
+		log.Println("Failed to draw weather icon:", err)
+	}
+
+	text(gc, formatTemp("Act", wthr.Current.Temp), 18, 100, 45)
+	text(gc, formatTemp("Max", daily.Temp.Max), 18, 220, 45)
+	text(gc, fmt.Sprintf("Pluie : %v%%", int(math.Round(daily.Pop))), 18, 100, 75)
+	text(gc, dailyWeather.Description, 18, leftX, 110)
 }
 
-func drawDateFete(gc *draw2dimg.GraphicContext, fetes *fete.Fete, now time.Time) {
-	text(gc, now.Format("15:04"), 40, 20, 190)
-	text(gc, getDate(now), 50, 20, 255)
-	text(gc, fmt.Sprintf("On fête les %s", fetes.Name), 17, 20, 400)
+func drawWeatherIcon(gc *draw2dimg.GraphicContext, dailyWeather weather.Weather) error {
+	icon := strings.TrimSuffix(dailyWeather.Icon, "d")
+	icon = strings.TrimSuffix(icon, "n")
+	f, err := icons.Open(fmt.Sprintf("icons/%sd.png", icon))
+	if err != nil {
+		return fmt.Errorf("opening icon: %w", err)
+	}
+
+	img, _, err := image.Decode(f)
+	if err != nil {
+		return fmt.Errorf("decoding icon: %w", err)
+	}
+
+	gc.DrawImage(img)
+	return nil
+}
+
+func formatTemp(name string, temp float64) string {
+	return fmt.Sprintf("%v : %v°C", name, int(math.Round(temp)))
+}
+
+func drawVelov(gc *draw2dimg.GraphicContext, station *transports.Station, yOffset float64) {
+	if station == nil {
+		return
+	}
+
+	text(gc, station.Name, 23, rightX, yOffset)
+	text(gc, fmt.Sprintf("V : %v - P : %v", station.BikesAvailable, station.DocksAvailable), 23, rightX, yOffset+30)
+}
+
+func drawDate(gc *draw2dimg.GraphicContext, now time.Time) {
+	text(gc, now.Format("15:04"), 60, leftX, 240)
+	text(gc, getDate(now), 30, leftX, 285)
+}
+
+func drawFete(gc *draw2dimg.GraphicContext, fetes *fete.Fete) {
+	if fetes == nil {
+		return
+	}
+
+	text(gc, fmt.Sprintf("On fête les %s", fetes.Name), 18, leftX, 400)
 }
 
 func drawTCL(gc *draw2dimg.GraphicContext, passages *transports.Passages, yoffset float64) {
+	if passages == nil {
+		return
+	}
+
 	for i, passage := range passages.Passages {
-		x := float64(600 + i*100)
-		text(gc, passage.Ligne, 15, x, yoffset)
+		x := float64(rightX + i*120)
+		text(gc, passage.Ligne, 23, x, yoffset)
 		for j, delay := range passage.Delays {
-			y := yoffset + float64(j+1)*30
-			text(gc, delay, 15, x, y)
+			y := yoffset + float64(j+1)*35
+			text(gc, delay, 23, x, y)
 			if j >= 2 { // limit number of delays displayed
 				break
 			}
@@ -89,8 +156,6 @@ func text(gc *draw2dimg.GraphicContext, s string, size, x, y float64) {
 	gc.SetFontData(draw2d.FontData{Name: fontName})
 	gc.SetFontSize(size)
 	gc.FillStringAt(s, x, y)
-	gc.SetLineWidth(2)
-	gc.StrokeStringAt(s, x, y)
 }
 
 func newWhite() *image.RGBA {
@@ -114,7 +179,28 @@ func rect(gc *draw2dimg.GraphicContext, x1, y1, x2, y2 float64) {
 }
 
 func getDate(now time.Time) string {
-	return fmt.Sprintf("%v %v", getDay(now), getMonth(now))
+	return fmt.Sprintf("%v %v %v", getDow(now), getDay(now), getMonth(now))
+}
+
+func getDow(now time.Time) string {
+	switch now.Weekday() {
+	case time.Monday:
+		return "lun"
+	case time.Tuesday:
+		return "mar"
+	case time.Wednesday:
+		return "mer"
+	case time.Thursday:
+		return "jeu"
+	case time.Friday:
+		return "ven"
+	case time.Saturday:
+		return "sam"
+	case time.Sunday:
+		return "dim"
+	}
+
+	return "?"
 }
 
 func getDay(now time.Time) string {

main.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"github.com/Crocmagnon/display-epaper/fete"
 	"github.com/Crocmagnon/display-epaper/transports"
+	"github.com/Crocmagnon/display-epaper/weather"
 	"github.com/golang/freetype/truetype"
 	"github.com/llgcode/draw2d"
 	_ "golang.org/x/image/bmp"
@@ -34,7 +35,11 @@ func main() {
 		CacheLocation: os.Getenv("FETE_CACHE_LOCATION"),
 	})
 
-	if err := run(ctx, transportsClient, feteClient); err != nil {
+	weatherClient := weather.New(nil, weather.Config{
+		APIKey: os.Getenv("WEATHER_API_KEY"),
+	})
+
+	if err := run(ctx, transportsClient, feteClient, weatherClient); err != nil {
 		log.Fatal("error: ", err)
 	}
 

run_darwin_arm64.go

@@ -4,19 +4,25 @@ import (
 	"context"
 	"github.com/Crocmagnon/display-epaper/fete"
 	"github.com/Crocmagnon/display-epaper/transports"
+	"github.com/Crocmagnon/display-epaper/weather"
 	"github.com/llgcode/draw2d/draw2dimg"
 	"log"
 	"time"
 )
 
-func run(ctx context.Context, transportsClient *transports.Client, feteClient *fete.Client) error {
+func run(
+	ctx context.Context,
+	transportsClient *transports.Client,
+	feteClient *fete.Client,
+	weatherClient *weather.Client,
+) error {
 	img, err := getBlack(ctx, func() time.Time {
 		t, err := time.Parse(time.DateOnly, "2024-08-01zzz")
 		if err != nil {
 			return time.Now()
 		}
 		return t
-	}, transportsClient, feteClient)
+	}, transportsClient, feteClient, weatherClient)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -24,7 +30,5 @@ func run(ctx context.Context, transportsClient *transports.Client, feteClient *f
 		log.Fatalf("error saving image: %v", err)
 	}
 
-	log.Println("done")
-
 	return nil
 }

run_linux_arm64.go

@@ -6,12 +6,18 @@ import (
 	"github.com/Crocmagnon/display-epaper/epd"
 	"github.com/Crocmagnon/display-epaper/fete"
 	"github.com/Crocmagnon/display-epaper/transports"
+	"github.com/Crocmagnon/display-epaper/weather"
 	"log"
 	"periph.io/x/host/v3"
 	"time"
 )
 
-func run(ctx context.Context, transportsClient *transports.Client, feteClient *fete.Client) error {
+func run(
+	ctx context.Context,
+	transportsClient *transports.Client,
+	feteClient *fete.Client,
+	weatherClient *weather.Client,
+) error {
 	_, err := host.Init()
 	if err != nil {
 		return fmt.Errorf("initializing host: %w", err)
@@ -30,7 +36,7 @@ func run(ctx context.Context, transportsClient *transports.Client, feteClient *f
 		default:
 		}
 
-		err = loop(ctx, display, transportsClient, feteClient)
+		err = loop(ctx, display, transportsClient, feteClient, weatherClient)
 		if err != nil {
 			log.Printf("error looping: %v\n", err)
 		}
@@ -45,6 +51,7 @@ func loop(
 	display *epd.EPD,
 	transportsClient *transports.Client,
 	feteClient *fete.Client,
+	weatherClient *weather.Client,
 ) error {
 	defer func() {
 		if err := display.Sleep(); err != nil {
@@ -59,7 +66,7 @@ func loop(
 
 	display.Clear()
 
-	black, err := getBlack(ctx, time.Now, transportsClient, feteClient)
+	black, err := getBlack(ctx, time.Now, transportsClient, feteClient, weatherClient)
 	if err != nil {
 		return fmt.Errorf("getting black: %w", err)
 	}

weather/weather.go

@@ -0,0 +1,122 @@
+package weather
+
+import (
+	"context"
+	"fmt"
+	"github.com/carlmjohnson/requests"
+	"net/http"
+)
+
+type Config struct {
+	APIKey string
+}
+
+type Client struct {
+	config Config
+	client *http.Client
+}
+
+func New(httpClient *http.Client, config Config) *Client {
+	return &Client{
+		config: config,
+		client: httpClient,
+	}
+}
+
+type Prevision struct {
+	Lat            float64 `json:"lat"`
+	Lon            float64 `json:"lon"`
+	Timezone       string  `json:"timezone"`
+	TimezoneOffset int     `json:"timezone_offset"`
+	Current        struct {
+		Dt         int     `json:"dt"`
+		Sunrise    int     `json:"sunrise"`
+		Sunset     int     `json:"sunset"`
+		Temp       float64 `json:"temp"`
+		FeelsLike  float64 `json:"feels_like"`
+		Pressure   int     `json:"pressure"`
+		Humidity   int     `json:"humidity"`
+		DewPoint   float64 `json:"dew_point"`
+		Uvi        float64 `json:"uvi"`
+		Clouds     int     `json:"clouds"`
+		Visibility int     `json:"visibility"`
+		WindSpeed  float64 `json:"wind_speed"`
+		WindDeg    int     `json:"wind_deg"`
+		WindGust   float64 `json:"wind_gust"`
+		Weather    []struct {
+			Id          int    `json:"id"`
+			Main        string `json:"main"`
+			Description string `json:"description"`
+			Icon        string `json:"icon"`
+		} `json:"weather"`
+	} `json:"current"`
+	Daily  []Daily `json:"daily"`
+	Alerts []struct {
+		SenderName  string   `json:"sender_name"`
+		Event       string   `json:"event"`
+		Start       int      `json:"start"`
+		End         int      `json:"end"`
+		Description string   `json:"description"`
+		Tags        []string `json:"tags"`
+	} `json:"alerts"`
+}
+
+type Daily struct {
+	Dt        int     `json:"dt"`
+	Sunrise   int     `json:"sunrise"`
+	Sunset    int     `json:"sunset"`
+	Moonrise  int     `json:"moonrise"`
+	Moonset   int     `json:"moonset"`
+	MoonPhase float64 `json:"moon_phase"`
+	Summary   string  `json:"summary"`
+	Temp      struct {
+		Day   float64 `json:"day"`
+		Min   float64 `json:"min"`
+		Max   float64 `json:"max"`
+		Night float64 `json:"night"`
+		Eve   float64 `json:"eve"`
+		Morn  float64 `json:"morn"`
+	} `json:"temp"`
+	FeelsLike struct {
+		Day   float64 `json:"day"`
+		Night float64 `json:"night"`
+		Eve   float64 `json:"eve"`
+		Morn  float64 `json:"morn"`
+	} `json:"feels_like"`
+	Pressure  int       `json:"pressure"`
+	Humidity  int       `json:"humidity"`
+	DewPoint  float64   `json:"dew_point"`
+	WindSpeed float64   `json:"wind_speed"`
+	WindDeg   int       `json:"wind_deg"`
+	WindGust  float64   `json:"wind_gust"`
+	Weather   []Weather `json:"weather"`
+	Clouds    int       `json:"clouds"`
+	Pop       float64   `json:"pop"`
+	Rain      float64   `json:"rain"`
+	Uvi       float64   `json:"uvi"`
+}
+
+type Weather struct {
+	Id          int    `json:"id"`
+	Main        string `json:"main"`
+	Description string `json:"description"`
+	Icon        string `json:"icon"`
+}
+
+func (c *Client) GetWeather(ctx context.Context) (res *Prevision, err error) {
+	err = requests.URL("https://api.openweathermap.org/data/3.0/onecall").
+		Client(c.client).
+		Param("lat", "45.78").
+		Param("lon", "4.89").
+		Param("appid", c.config.APIKey).
+		Param("units", "metric").
+		Param("lang", "fr").
+		Param("exclude", "minutely,hourly").
+		ToJSON(&res).
+		Fetch(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("calling openweathermap: %w", err)
+	}
+
+	return res, nil
+}