import Router from "@koa/router";
import { OAuth2 } from "oauth";
import { v4 as uuid } from "uuid";
import { IsNull } from "typeorm";
import { getJson } from "../../../misc/fetch.js";
import config from "../../../config/index.js";
import { publishMainStream } from "../../../services/stream.js";
import { fetchMeta } from "../../../misc/fetch-meta.js";
import { Users, UserProfiles } from "../../../models/index.js";
import { redisClient } from "../../../db/redis.js";
import signin from "../common/signin.js";
function getUserToken(ctx) {
    return ((ctx.headers["cookie"] || "").match(/igi=(\w+)/) || [
        null,
        null
    ])[1];
}
function compareOrigin(ctx) {
    function normalizeUrl(url) {
        return url ? url.endsWith("/") ? url.slice(0, url.length - 1) : url : "";
    }
    const referer = ctx.headers["referer"];
    return normalizeUrl(referer) === normalizeUrl(config.url);
}
// Init router
const router = new Router();
router.get("/disconnect/github", async (ctx)=>{
    if (!compareOrigin(ctx)) {
        ctx.throw(400, "invalid origin");
        return;
    }
    const userToken = getUserToken(ctx);
    if (!userToken) {
        ctx.throw(400, "signin required");
        return;
    }
    const user = await Users.findOneByOrFail({
        host: IsNull(),
        token: userToken
    });
    const profile = await UserProfiles.findOneByOrFail({
        userId: user.id
    });
    profile.integrations.github = undefined;
    await UserProfiles.update(user.id, {
        integrations: profile.integrations
    });
    ctx.body = "GitHubの連携を解除しました :v:";
    // Publish i updated event
    publishMainStream(user.id, "meUpdated", await Users.pack(user, user, {
        detail: true,
        includeSecrets: true
    }));
});
async function getOath2() {
    const meta = await fetchMeta(true);
    if (meta.enableGithubIntegration && meta.githubClientId && meta.githubClientSecret) {
        return new OAuth2(meta.githubClientId, meta.githubClientSecret, "https://github.com/", "login/oauth/authorize", "login/oauth/access_token");
    } else {
        return null;
    }
}
router.get("/connect/github", async (ctx)=>{
    if (!compareOrigin(ctx)) {
        ctx.throw(400, "invalid origin");
        return;
    }
    const userToken = getUserToken(ctx);
    if (!userToken) {
        ctx.throw(400, "signin required");
        return;
    }
    const params = {
        redirect_uri: `${config.url}/api/gh/cb`,
        scope: [
            "read:user"
        ],
        state: uuid()
    };
    redisClient.set(userToken, JSON.stringify(params));
    const oauth2 = await getOath2();
    ctx.redirect(oauth2.getAuthorizeUrl(params));
});
router.get("/signin/github", async (ctx)=>{
    const sessid = uuid();
    const params = {
        redirect_uri: `${config.url}/api/gh/cb`,
        scope: [
            "read:user"
        ],
        state: uuid()
    };
    ctx.cookies.set("signin_with_github_sid", sessid, {
        path: "/",
        secure: config.url.startsWith("https"),
        httpOnly: true
    });
    redisClient.set(sessid, JSON.stringify(params));
    const oauth2 = await getOath2();
    ctx.redirect(oauth2.getAuthorizeUrl(params));
});
router.get("/gh/cb", async (ctx)=>{
    const userToken = getUserToken(ctx);
    const oauth2 = await getOath2();
    if (!userToken) {
        const sessid = ctx.cookies.get("signin_with_github_sid");
        if (!sessid) {
            ctx.throw(400, "invalid session");
            return;
        }
        const code = ctx.query.code;
        if (!code || typeof code !== "string") {
            ctx.throw(400, "invalid session");
            return;
        }
        const { redirect_uri, state } = await new Promise((res, rej)=>{
            redisClient.get(sessid, async (_, state)=>{
                res(JSON.parse(state));
            });
        });
        if (ctx.query.state !== state) {
            ctx.throw(400, "invalid session");
            return;
        }
        const { accessToken } = await new Promise((res, rej)=>oauth2.getOAuthAccessToken(code, {
                redirect_uri
            }, (err, accessToken, refresh, result)=>{
                if (err) {
                    rej(err);
                } else if (result.error) {
                    rej(result.error);
                } else {
                    res({
                        accessToken
                    });
                }
            }));
        const { login, id } = await getJson("https://api.github.com/user", "application/vnd.github.v3+json", 10 * 1000, {
            Authorization: `bearer ${accessToken}`
        });
        if (typeof login !== "string" || typeof id !== "string") {
            ctx.throw(400, "invalid session");
            return;
        }
        const link = await UserProfiles.createQueryBuilder().where("\"integrations\"->'github'->>'id' = :id", {
            id: id
        }).andWhere('"userHost" IS NULL').getOne();
        if (link == null) {
            ctx.throw(404, `@${login}と連携しているMisskeyアカウントはありませんでした...`);
            return;
        }
        signin(ctx, await Users.findOneBy({
            id: link.userId
        }), true);
    } else {
        const code = ctx.query.code;
        if (!code || typeof code !== "string") {
            ctx.throw(400, "invalid session");
            return;
        }
        const { redirect_uri, state } = await new Promise((res, rej)=>{
            redisClient.get(userToken, async (_, state)=>{
                res(JSON.parse(state));
            });
        });
        if (ctx.query.state !== state) {
            ctx.throw(400, "invalid session");
            return;
        }
        const { accessToken } = await new Promise((res, rej)=>oauth2.getOAuthAccessToken(code, {
                redirect_uri
            }, (err, accessToken, refresh, result)=>{
                if (err) {
                    rej(err);
                } else if (result.error) {
                    rej(result.error);
                } else {
                    res({
                        accessToken
                    });
                }
            }));
        const { login, id } = await getJson("https://api.github.com/user", "application/vnd.github.v3+json", 10 * 1000, {
            Authorization: `bearer ${accessToken}`
        });
        if (typeof login !== "string" || typeof id !== "string") {
            ctx.throw(400, "invalid session");
            return;
        }
        const user = await Users.findOneByOrFail({
            host: IsNull(),
            token: userToken
        });
        const profile = await UserProfiles.findOneByOrFail({
            userId: user.id
        });
        await UserProfiles.update(user.id, {
            integrations: {
                ...profile.integrations,
                github: {
                    accessToken: accessToken,
                    id: id,
                    login: login
                }
            }
        });
        ctx.body = `GitHub: @${login} を、Misskey: @${user.username} に接続しました！`;
        // Publish i updated event
        publishMainStream(user.id, "meUpdated", await Users.pack(user, user, {
            detail: true,
            includeSecrets: true
        }));
    }
});
export default router;