From 419e08bc3a369a0c1138871184e1a30320032afd Mon Sep 17 00:00:00 2001
From: Vidhu Kant Sharma <vidhukant@protonmail.ch>
Date: Sun, 13 Feb 2022 16:56:09 +0530
Subject: added functionality to update anime list of authenticated user

---
 user/anime/animelist.go         | 14 ++++++++++++--
 user/anime/animelist.structs.go | 13 +++++++++++++
 user/anime/request_handler.go   | 26 ++++++++++++++++++++++++++
 3 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/user/anime/animelist.go b/user/anime/animelist.go
index 120bdea..4f5eac5 100644
--- a/user/anime/animelist.go
+++ b/user/anime/animelist.go
@@ -37,9 +37,19 @@ func (c AnimeListClient)DeleteAnime(id int) string {
 }
 
 // Update/Add an anime to user's anime list
-// func UpdateAnime(id int) {
+func (c AnimeListClient)UpdateAnime(id int, data UpdateAnimeData) string {
+  endpoint := fmt.Sprintf("%s/anime/%d/my_list_status", BASE_URL, id)
+
+  // turn data struct into json
+  pepe, err := json.Marshal(data)
+  if err != nil {
+    fmt.Println(err)
+  }
 
-// }
+  // finally make API request
+  res := c.putRequestHandler(endpoint, pepe)
+  return res
+}
 
 // Get authenticated user's anime list
 func (c AnimeListClient) GetAnimeList(user, status, sort string, limit, offset int) (a.AnimeList, error){
diff --git a/user/anime/animelist.structs.go b/user/anime/animelist.structs.go
index d43b47b..d874f7b 100644
--- a/user/anime/animelist.structs.go
+++ b/user/anime/animelist.structs.go
@@ -27,3 +27,16 @@ type AnimeListRaw struct {
   }  `json:"data"`
   Paging anime.ListPaging `json:"paging"`
 }
+
+type UpdateAnimeData struct {
+  Status         string `json:"status"`
+  IsRewatching   bool   `json:"is_rewatching"`
+  Score          int    `json:"score"`
+  EpWatched      int    `json:"num_watched_episodes"`
+  Priority       int    `json:"priority"`
+  TimesRewatched int    `json:"num_times_rewatched"`
+  // NOTE: idk what RewatchValue is
+  RewatchValue   int    `json:"rewatch_value"`
+  Tags           string `json:"tags"`
+  Comments       string `json:"comments"`
+}
diff --git a/user/anime/request_handler.go b/user/anime/request_handler.go
index 2007e56..22c6e0b 100644
--- a/user/anime/request_handler.go
+++ b/user/anime/request_handler.go
@@ -21,6 +21,7 @@ import (
 	"log"
 	"net/http"
 	"strconv"
+  "bytes"
 )
 
 // Handles HTTP request with your OAuth token as a Header
@@ -52,3 +53,28 @@ func (c AnimeListClient) requestHandler(endpoint, method string) string {
 
   return string(body)
 }
+
+// for PUT requests (used by UpdateAnime)
+func (c AnimeListClient) putRequestHandler(endpoint string, data []uint8) string {
+  // generate request
+  req, err := http.NewRequest(http.MethodPut, endpoint, bytes.NewBuffer(data))
+  if err != nil {
+      log.Fatal(err)
+  }
+  req.Header.Add("Authorization", c.AuthToken)
+
+  // do request
+  res, err := c.HttpClient.Do(req)
+  if err != nil {
+      log.Fatal(err)
+  }
+  defer res.Body.Close()
+
+  // read body
+  body, err := ioutil.ReadAll(res.Body)
+  if err != nil {
+      log.Fatal(err)
+  }
+
+  return string(body)
+}
-- 
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