Initial commit

2023-03-29 12:51:49 +02:00 · 2023-03-29 12:51:49 +02:00 · 1f31b36181
commit 1f31b36181
5 changed files with 151 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -0,0 +1,11 @@
+# COOPGO Geocode 
+
+COOPGO Geocode is a Golang Geocoder library part of the [COOPGO](https://coopgo.fr) Technical Platform.
+
+For the moment, it supports as a backend the following geocoders :
+
+- [Pelias](https://pelias.io)
+
+## Licence
+
+COOPGO Geocode is released under the terms of the AGPL version 3 licence
--- a/geocode.go
+++ b/geocode.go
@ -0,0 +1,20 @@
+package geocode
+
+import (
+	"fmt"
+
+	geojson "github.com/paulmach/orb/geojson"
+)
+
+type Geocoder interface {
+	Autocomplete(text string) (*geojson.FeatureCollection, error)
+}
+
+func NewGeocoder(geocoder_type string, baseUrl string) (Geocoder, error) {
+	if geocoder_type == "pelias" {
+		handler, _ := NewPeliasHandler(baseUrl)
+		return handler, nil
+	}
+
+	return nil, fmt.Errorf("geocoder type %s does not exist", geocoder_type)
+}
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,7 @@
+module git.coopgo.io/coopgo-platform/geocode
+
+go 1.18
+
+require github.com/paulmach/orb v0.9.0
+
+require go.mongodb.org/mongo-driver v1.11.1 // indirect
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,72 @@
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--- a/pelias.go
+++ b/pelias.go
@ -0,0 +1,41 @@
+package geocode
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"github.com/paulmach/orb/geojson"
+)
+
+const (
+	PELIAS_AUTOCOMPLETE_ENDPOINT = "/v1/autocomplete"
+)
+
+type PeliasHandler struct {
+	BaseURL string
+}
+
+func NewPeliasHandler(baseUrl string) (PeliasHandler, error) {
+	return PeliasHandler{
+		BaseURL: baseUrl,
+	}, nil
+}
+
+func (h PeliasHandler) Autocomplete(text string) (*geojson.FeatureCollection, error) {
+	url := fmt.Sprintf("%s%s?text=%s", h.BaseURL, PELIAS_AUTOCOMPLETE_ENDPOINT, url.QueryEscape(text))
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, err
+	}
+
+	fc := geojson.NewFeatureCollection()
+
+	if err = json.NewDecoder(resp.Body).Decode(&fc); err != nil {
+		return nil, err
+	}
+
+	return fc, nil
+}