peach: flesh out bare bones

1 files changed, 134 insertions, 1 deletions

diff --git a/main.go b/main.go
index b0fd29a..2f4448e 100644
--- a/main.go
+++ b/main.go
@@ -3,4 +3,137 @@
 
 package main
 
-func main() {}
+import (
+	"embed"
+	"fmt"
+	"html/template"
+	"log"
+	"net/http"
+	"time"
+
+	"ricketyspace.net/peach/nws"
+)
+
+// Holds static content.
+//go:embed html static
+var peachFS embed.FS
+
+// HTML templates.
+var peachTemplates = template.Must(template.ParseFS(peachFS, "html/*.html"))
+
+type Weather struct {
+	Location string
+	Now      WeatherNow
+	Period   WeatherPeriod
+	Timeline WeatherTimeline
+}
+
+type WeatherNow struct {
+	Temperature     int
+	TemperatureUnit string
+	Forecast        string
+	WindSpeed       string
+	WindDirection   string
+}
+
+type WeatherPeriod struct {
+	Forecast        string
+	Hour            int
+	Temperature     int
+	TemperatureUnit string
+}
+
+type WeatherTimeline struct {
+	Periods []WeatherPeriod
+}
+
+func main() {
+	http.Handle("/static/", http.FileServer(http.FS(peachFS)))
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		if len(r.URL.Path[1:]) != 0 {
+			http.NotFound(w, r)
+			return
+		}
+		showWeather(w, 41.115, -83.177)
+	})
+	log.Fatal(http.ListenAndServe(":8151", nil))
+}
+
+func showWeather(w http.ResponseWriter, lat, lng float32) {
+	point, err := nws.Points(lat, lng)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	// Get forecast
+	f, err := nws.Forecast(point)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+	fh, err := nws.ForecastHourly(point)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	// Make weather
+	weather, err := NewWeather(point, f, fh)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	err = peachTemplates.ExecuteTemplate(w, "weather.html", weather)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+}
+
+func NewWeather(point *nws.NWSPoint, f, fh *nws.NWSForecast) (*Weather, error) {
+	w := new(Weather)
+	w.Location = fmt.Sprintf("%s, %s",
+		point.Properties.RelativeLocation.Properties.City,
+		point.Properties.RelativeLocation.Properties.State,
+	)
+	w.Now = WeatherNow{
+		Temperature:     fh.Properties.Periods[0].Temperature,
+		TemperatureUnit: fh.Properties.Periods[0].TemperatureUnit,
+		Forecast:        fh.Properties.Periods[0].ShortForecast,
+		WindSpeed:       fh.Properties.Periods[0].WindSpeed,
+		WindDirection:   fh.Properties.Periods[0].WindDirection,
+	}
+	w.Period = WeatherPeriod{
+		Forecast: f.Properties.Periods[0].DetailedForecast,
+	}
+
+	// Build timeline.
+	periods := []WeatherPeriod{}
+	max := 12
+	for i, period := range fh.Properties.Periods {
+		if i%2 != 0 {
+			continue // Take every other period
+		}
+		t, err := time.Parse(time.RFC3339, period.StartTime)
+		if err != nil {
+			return nil, err
+		}
+		p := WeatherPeriod{
+			Forecast:        period.DetailedForecast,
+			Hour:            t.Hour(),
+			Temperature:     period.Temperature,
+			TemperatureUnit: period.TemperatureUnit,
+		}
+		periods = append(periods, p)
+		if len(periods) == max {
+			break
+		}
+	}
+	w.Timeline = WeatherTimeline{
+		Periods: periods,
+	}
+
+	return w, nil
+}