import define from "../../../define.js";
import { ApiError } from "../../../error.js";
import { Apps, AuthSessions, AccessTokens, Users } from "@/models/index.js";

export const meta = {
	tags: ["auth"],

	requireCredential: false,

	res: {
		type: "object",
		optional: false,
		nullable: false,
		properties: {
			accessToken: {
				type: "string",
				optional: false,
				nullable: false,
			},

			user: {
				type: "object",
				optional: false,
				nullable: false,
				ref: "UserDetailedNotMe",
			},
		},
	},

	errors: {
		noSuchApp: {
			message: "No such app.",
			code: "NO_SUCH_APP",
			id: "fcab192a-2c5a-43b7-8ad8-9b7054d8d40d",
		},

		noSuchSession: {
			message: "No such session.",
			code: "NO_SUCH_SESSION",
			id: "5b5a1503-8bc8-4bd0-8054-dc189e8cdcb3",
		},

		pendingSession: {
			message: "This session is not completed yet.",
			code: "PENDING_SESSION",
			id: "8c8a4145-02cc-4cca-8e66-29ba60445a8e",
		},
	},
} as const;

export const paramDef = {
	type: "object",
	properties: {
		appSecret: { type: "string" },
		token: { type: "string" },
	},
	required: ["appSecret", "token"],
} as const;

export default define(meta, paramDef, async (ps) => {
	// Lookup app
	const app = await Apps.findOneBy({
		secret: ps.appSecret,
	});

	if (app == null) {
		throw new ApiError(meta.errors.noSuchApp);
	}

	// Fetch token
	const session = await AuthSessions.findOneBy({
		token: ps.token,
		appId: app.id,
	});

	if (session == null) {
		throw new ApiError(meta.errors.noSuchSession);
	}

	if (session.userId == null) {
		throw new ApiError(meta.errors.pendingSession);
	}

	// Lookup access token
	const accessToken = await AccessTokens.findOneByOrFail({
		appId: app.id,
		userId: session.userId,
	});

	// Delete session
	AuthSessions.delete(session.id);

	return {
		accessToken: accessToken.token,
		user: await Users.pack(session.userId, null, {
			detail: true,
		}),
	};
});
