From e6183ddfa3afa0f7504492198d2b6a463ead8dfa Mon Sep 17 00:00:00 2001
From: milarin <milaring@proton.me>
Date: Mon, 9 Oct 2023 13:48:09 +0200
Subject: [PATCH] handle error messages

---
 .gitignore   |  1 +
 api.go       |  4 ++++
 api_error.go | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 api_error.go

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..efe1bd2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+api_test.go
\ No newline at end of file
diff --git a/api.go b/api.go
index fb63f02..ad64082 100644
--- a/api.go
+++ b/api.go
@@ -49,6 +49,10 @@ func request[T any](api *Api, query string, vars map[string]interface{}, respObj
 	}
 	defer resp.Body.Close()
 
+	if resp.StatusCode != 200 {
+		return handleError(resp)
+	}
+
 	//data, _ := ioutil.ReadAll(resp.Body)
 	//fmt.Println(string(data))
 
diff --git a/api_error.go b/api_error.go
new file mode 100644
index 0000000..94f6245
--- /dev/null
+++ b/api_error.go
@@ -0,0 +1,32 @@
+package anilist
+
+import (
+	"encoding/json"
+	"errors"
+	"net/http"
+)
+
+type apiError struct {
+	Message string `json:"message"`
+	Status  int    `json:"status"`
+}
+
+type apiErrResp struct {
+	Errors []apiError `json:"errors"`
+}
+
+func handleError(resp *http.Response) error {
+	respObj := &apiErrResp{}
+
+	dec := json.NewDecoder(resp.Body)
+	err := dec.Decode(respObj)
+	if err != nil {
+		return err
+	}
+
+	if len(respObj.Errors) == 0 {
+		return errors.New("unknown API error")
+	}
+
+	return errors.New(respObj.Errors[0].Message)
+}