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path: root/pages/api/auth/[...nextauth].ts
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import NextAuth, { NextAuthOptions } from "next-auth";

export const authOptions: NextAuthOptions = {
  secret: process.env.NEXTAUTH_SECRET,
  providers: [
    {
      id: "AniListProvider",
      name: "AniList",
      type: "oauth",
      token: "https://anilist.co/api/v2/oauth/token",
      authorization: {
        url: "https://anilist.co/api/v2/oauth/authorize",
        params: { scope: "", response_type: "code" },
      },
      userinfo: {
        url: process.env.GRAPHQL_ENDPOINT,
        async request(context) {
          // console.log(context.tokens.access_token);
          const { data } = await fetch("https://graphql.anilist.co", {
            method: "POST",
            headers: {
              "Content-Type": "application/json",
              // ...(context.tokens.access_token && {
              Authorization: `Bearer ${context.tokens.access_token}`,
              // }),
            },
            body: JSON.stringify({
              query: `
              query {
                Viewer {
                  id
                  name
                  avatar {
                    large
                    medium
                  }
                  bannerImage
                  mediaListOptions {
                    animeList {
                      customLists
                    }
                  }
                }
              }
            `,
            }),
          }).then((res) => res.json());

          const userLists = data.Viewer?.mediaListOptions.animeList.customLists;

          let custLists = userLists || [];

          if (!userLists?.includes("Watched using Moopa")) {
            custLists.push("Watched using Moopa");
            const fetchGraphQL = async (
              query: string,
              variables: { lists: any }
            ) => {
              const response = await fetch("https://graphql.anilist.co/", {
                method: "POST",
                headers: {
                  "Content-Type": "application/json",
                  ...(context.tokens.access_token && {
                    Authorization: `Bearer ${context.tokens.access_token}`,
                  }),
                },
                body: JSON.stringify({ query, variables }),
              });
              return response.json();
            };

            const customLists = async (lists: any) => {
              const setList = `
                  mutation($lists: [String]){
                    UpdateUser(animeListOptions: { customLists: $lists }){
                      id
                    }
                  }
                `;
              const data = await fetchGraphQL(setList, { lists });
              return data;
            };

            await customLists(custLists);
          }

          return {
            token: context.tokens.access_token,
            name: data.Viewer.name,
            sub: data.Viewer.id,
            image: data.Viewer.avatar,
            list: data.Viewer?.mediaListOptions.animeList.customLists,
          };
        },
      },
      clientId: process.env.CLIENT_ID,
      clientSecret: process.env.CLIENT_SECRET,
      profile(profile) {
        return {
          token: profile.token,
          id: profile.sub,
          name: profile?.name,
          image: profile.image,
          list: profile?.list,
          version: "1.0.1",
        };
      },
    },
  ],
  session: {
    //Sets the session to use JSON Web Token
    strategy: "jwt",
  },
  callbacks: {
    async jwt({ token, user }) {
      return { ...token, ...user };
    },
    async session({ session, token, user }) {
      session.user = token;
      return session;
    },
  },
};

export default NextAuth(authOptions);