Completed Get Anime Ranking API route

3 files changed, 68 insertions, 3 deletions

diff --git a/anime/anime.go b/anime/anime.go
index e9ef70f..c397d93 100644
--- a/anime/anime.go
+++ b/anime/anime.go
@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"log"
 	"net/http"
+  "errors"
 )
 
 func requestHandler(token string, endpoint string) string {
@@ -34,11 +35,12 @@ func requestHandler(token string, endpoint string) string {
   return string(body)
 }
 
+// Each anime has its own ID on MAL
 func GetAnimeById(token string, animeId int) Anime {
   endpoint := fmt.Sprintf("https://api.myanimelist.net/v2/anime/%d?fields=id,title,main_picture,alternative_titles,start_date,end_date,synopsis,mean,rank,popularity,num_list_users,num_scoring_users,nsfw,created_at,updated_at,media_type,status,genres,my_list_status,num_episodes,start_season,broadcast,source,average_episode_duration,rating,pictures,background,related_anime,related_manga,recommendations,studios,statistics", animeId)
 
-  data := requestHandler(token, endpoint)
   var anime Anime
+  data := requestHandler(token, endpoint)
   json.Unmarshal([]byte(data), &anime)
 
   return anime
@@ -62,8 +64,40 @@ func isValidRankingType(rankingType string) bool {
     return false
 }
 
-func GetAnimeRanking(token string, rankingType string) {
+// Ranking is a list of anime sorted by their rank
+func GetAnimeRanking(token string, rankingType string) (AnimeRanking, error) {
+  var animeRanking AnimeRanking
   if !isValidRankingType(rankingType) {
-    log.Fatal(fmt.Sprintf("GetAnimeRanking: Invalid Ranking Type Given (\"%s\")", rankingType))
+    return animeRanking, errors.New(fmt.Sprintf("GetAnimeRanking: Invalid Ranking Type Given (\"%s\")", rankingType))
+  }
+
+  endpoint := "https://api.myanimelist.net/v2/anime/ranking?ranking_type=all&limit=4"
+
+  // gets data from API and stores it in a struct
+  var rankingData RawRanking
+  data := requestHandler(token, endpoint)
+  json.Unmarshal([]byte(data), &rankingData)
+
+  // Adding all the animes in ranking list to a slice
+  var animeRankingTitles []AnimeRankingTitle
+  for _, element := range rankingData.Data {
+    animeRankingTitles = append(
+      animeRankingTitles,
+      AnimeRankingTitle {
+        Anime:   element.Anime, 
+        RankNum: element.Ranking.Rank,
+      },
+    )
   }
+
+  // Finally, create the AnimeRanking object
+  animeRanking = AnimeRanking {
+    Titles: animeRankingTitles,
+    Paging: ListPaging {
+      NextPage: rankingData.Paging.NextPage,
+      PrevPage: rankingData.Paging.PrevPage,
+    },
+  }
+
+  return animeRanking, nil
 }
diff --git a/anime/structs.go b/anime/anime.structs.go
index bb35ded..bb35ded 100644
--- a/anime/structs.go
+++ b/anime/anime.structs.go
diff --git a/anime/ranking.structs.go b/anime/ranking.structs.go
new file mode 100644
index 0000000..8b9b303
--- /dev/null
+++ b/anime/ranking.structs.go
@@ -0,0 +1,31 @@
+package anime
+
+// contains previous/next page for anime list
+type ListPaging struct {
+  NextPage string `json:"next"`
+  PrevPage string `json:"previous"` // might need checking
+}
+
+// this is how the API returns data (looks horrible)
+type RawRanking struct {
+  Data []struct {
+    Anime Anime `json:"node"`
+    Ranking struct {
+      Rank int `json:"rank"`
+    } `json:"ranking"`
+  } `json:"data"`
+
+  Paging ListPaging `json:"paging"`
+}
+
+// each anime has a ranking number
+type AnimeRankingTitle struct {
+  Anime   Anime
+  RankNum int
+}
+
+// this is how mal2go returns data
+type AnimeRanking struct {
+  Titles []AnimeRankingTitle
+  Paging ListPaging
+}