Initial commit

reddit/gallery.go

@@ -0,0 +1,54 @@
+package reddit
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+
+	"github.com/cwpearson/reddit-images/rate_limit"
+)
+
+type GListing struct {
+	Data GListingData `json:"data"`
+}
+
+type GListingData struct {
+	Children []GListingDataChild `json:"children"`
+}
+
+type GListingDataChild struct {
+	Data GListingDataChildData `json:"data"`
+}
+
+type GListingDataChildData struct {
+	MediaMetadata map[string]Metadata `json:"media_metadata"`
+}
+
+type Metadata struct {
+	Id       string `json:"id"`
+	Mimetype string `json:"m"`
+}
+
+func GalleryImageMetadata(rl *rate_limit.RateLimit, url string) ([]Metadata, error) {
+	jsonUrl := fmt.Sprintf("%s.json?raw_json=1", url)
+	log.Printf("gallery url: %s -> %s", url, jsonUrl)
+
+	content, err := rl.Get(jsonUrl, "")
+	if err != nil {
+		return nil, err
+	}
+
+	var data []GListing
+	err = json.Unmarshal(content, &data)
+	if err != nil {
+		return nil, err
+	}
+
+	res := []Metadata{}
+
+	for _, val := range data[0].Data.Children[0].Data.MediaMetadata {
+		res = append(res, val)
+	}
+
+	return res, nil
+}