Added GetMovie and related structs

tmdb/movie.go

@@ -0,0 +1,35 @@
+package tmdb
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/pkg/errors"
+)
+
+func GetMovie(id int32, token string) (*Movie, error) {
+	url := fmt.Sprintf("https://api.themoviedb.org/3/movie/%v?language=en-US", id)
+
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		return nil, errors.Wrap(err, "http.NewRequest")
+	}
+
+	req.Header.Add("accept", "application/json")
+	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", token))
+
+	res, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, errors.Wrap(err, "http.DefaultClient.Do")
+	}
+	defer res.Body.Close()
+	body, err := io.ReadAll(res.Body)
+	if err != nil {
+		return nil, errors.Wrap(err, "io.ReadAll")
+	}
+	movie := Movie{}
+	json.Unmarshal(body, &movie)
+	return &movie, nil
+}