accept flags and -d for a box

cmd/run.go

@@ -3,18 +3,30 @@ package cmd
 import (
 	"context"
 	"encoding/json"
+	"flag"
 	"fmt"
 	"os"
 	"path"
 )
 
 func Run(ctx context.Context) error {
-	m, err := NewMapsOf(ctx, os.Args[1])
+	fs := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
+	searchRadius := fs.Float64("r", 5.0, "search radius in miles")
+	area := fs.Float64("a", 0.5, "result radius in miles")
+	doArea := fs.Bool("d", false, "do result radius in miles")
+	if err := fs.Parse(os.Args[1:]); err != nil {
+		panic(err)
+	}
+	radius := *area / convertToMiles
+	radiusX := radius / 2
+	radiusY := radius / 3
+
+	m, err := NewMapsOf(ctx, fs.Args()[0])
 	if err != nil {
 		return err
 	}
 
-	results, err := m.Search(ctx, os.Args[2], 5.0)
+	results, err := m.Search(ctx, fs.Args()[1], *searchRadius)
 	if err != nil {
 		return err
 	}
@@ -25,16 +37,27 @@ func Run(ctx context.Context) error {
 			Name string `json:"name"`
 		} `json:"properties"`
 		Geometry struct {
-			Type        string    `json:"type"`
-			Coordinates []float64 `json:"coordinates"`
+			Type        string `json:"type"`
+			Coordinates []any  `json:"coordinates"`
 		} `json:"geometry"`
 	}
 	geoJsons := make([]geoJson, len(results))
 	for i := range results {
 		geoJsons[i].Type = "Feature"
-		geoJsons[i].Properties.Name = path.Join(os.Args[2], results[i].Name)
+		geoJsons[i].Properties.Name = path.Join(fs.Args()[1], results[i].Name)
 		geoJsons[i].Geometry.Type = "Point"
-		geoJsons[i].Geometry.Coordinates = []float64{results[i].Lng, results[i].Lat}
+		geoJsons[i].Geometry.Coordinates = []any{results[i].Lng, results[i].Lat}
+		if *doArea {
+			geoJsons[i].Geometry.Type = "Polygon"
+			x, y := results[i].Lng, results[i].Lat
+			geoJsons[i].Geometry.Coordinates = []any{[]any{
+				[2]float64{x - radiusX, y + radiusY}, // top left
+				[2]float64{x + radiusX, y + radiusY}, // top righ
+				[2]float64{x + radiusX, y - radiusY}, // bot righ
+				[2]float64{x - radiusX, y - radiusY}, // bot left
+				[2]float64{x - radiusX, y + radiusY}, // top left
+			}}
+		}
 	}
 	b, _ := json.Marshal(map[string]any{
 		"features": geoJsons,