nest-supabase-guard/dist/jwt-auth.guard.js

Auth guard for NestJS using supabase

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
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var __metadata = (this && this.__metadata) || function (k, v) {
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};
var __param = (this && this.__param) || function (paramIndex, decorator) {
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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        step((generator = generator.apply(thisArg, _arguments || [])).next());
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};
var JWTAuthGuard_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.JWTAuthGuard = void 0;
const common_1 = require("@nestjs/common");
const supabase_js_1 = require("@supabase/supabase-js");
let JWTAuthGuard = JWTAuthGuard_1 = class JWTAuthGuard {
    constructor(client) {
        this.logger = new common_1.Logger(JWTAuthGuard_1.name);
        this.logger.debug(client);
        this.supabaseClient = client || this.initializeSupabaseClient();
    }
    initializeSupabaseClient() {
        this.logger.debug("Supabase auth guard initializing new Supabase client");
        if (!process.env.SUPABASE_URL) {
            throw new Error("Supabase Auth environment variable: SUPABASE_URL is not set.");
        }
        if (!process.env.SUPABASE_ANON_KEY) {
            throw new Error("Supabase Auth environment variable: SUPABASE_ANON_KEY is not set.");
        }
        return (0, supabase_js_1.createClient)(process.env.SUPABASE_URL, process.env.SUPABASE_ANON_KEY);
    }
    canActivate(context) {
        return __awaiter(this, void 0, void 0, function* () {
            const request = context.switchToHttp().getRequest();
            const user = yield this.authenticateRequest(request);
            request.user = user;
            return true;
        });
    }
    authenticateRequest(request) {
        return __awaiter(this, void 0, void 0, function* () {
            const token = this.extractTokenFromHeader(request);
            if (!token) {
                this.logger.error(`No token provided`);
                throw new common_1.UnauthorizedException(`No token provided`);
            }
            const user = yield this.getUserFromJWT(token);
            if (!user) {
                this.logger.error(`Invalid token: ${token}`);
                throw new common_1.UnauthorizedException(`Invalid token`);
            }
            return user;
        });
    }
    extractTokenFromHeader(request) {
        var _a, _b;
        const [type, token] = (_b = (_a = request.headers.authorization) === null || _a === void 0 ? void 0 : _a.split(" ")) !== null && _b !== void 0 ? _b : [];
        return type === "Bearer" && token != "undefined" ? token : undefined;
    }
    getUserFromJWT(token) {
        return __awaiter(this, void 0, void 0, function* () {
            const response = yield this.supabaseClient.auth.getUser(token);
            if (!response.data.user) {
                throw new Error("User not found in Supabase for the given token");
            }
            return response.data.user;
        });
    }
};
exports.JWTAuthGuard = JWTAuthGuard;
exports.JWTAuthGuard = JWTAuthGuard = JWTAuthGuard_1 = __decorate([
    (0, common_1.Injectable)(),
    __param(0, (0, common_1.Optional)()),
    __param(0, (0, common_1.Inject)("SUPABASE_CLIENT")),
    __metadata("design:paramtypes", [supabase_js_1.SupabaseClient])
], JWTAuthGuard);
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