bb-inspired/dist/modules/plugin/hook.service.js

Core library for BB-inspired NestJS backend

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
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    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var HookService_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.HookService = void 0;
const common_1 = require("@nestjs/common");
const logger_1 = require("../../utils/logger");
let HookService = HookService_1 = class HookService {
    constructor() {
        this.logger = new logger_1.AppLogger(HookService_1.name);
        this.hooks = new Map();
        this.hookPoints = new Set();
        this.registerCoreHookPoints();
    }
    registerCoreHookPoints() {
        const coreHooks = [
            'onServerStart',
            'onServerShutdown',
            'onRequest',
            'onResponse',
            'onError',
            'onAuthenticate',
            'onAuthorize',
            'beforeCrudOperation',
            'afterCrudOperation',
        ];
        for (const hook of coreHooks) {
            this.registerHookPoint(hook);
        }
        this.logger.verbose(`Registered ${coreHooks.length} core hook points`);
    }
    registerHookPoint(name) {
        if (this.hookPoints.has(name)) {
            return;
        }
        this.hookPoints.add(name);
        this.hooks.set(name, new Set());
        this.logger.verbose(`Registered hook point: ${name}`);
    }
    hasHookPoint(name) {
        return this.hookPoints.has(name);
    }
    getHookPoints() {
        return Array.from(this.hookPoints);
    }
    registerHandler(hookName, handler) {
        if (!this.hookPoints.has(hookName)) {
            this.registerHookPoint(hookName);
        }
        this.hooks.get(hookName).add(handler);
        this.logger.verbose(`Registered handler for hook: ${hookName}`);
    }
    unregisterHandler(hookName, handler) {
        if (!this.hooks.has(hookName)) {
            return false;
        }
        const result = this.hooks.get(hookName).delete(handler);
        if (result) {
            this.logger.verbose(`Unregistered handler from hook: ${hookName}`);
        }
        return result;
    }
    async executeHook(hookName, data) {
        if (!this.hooks.has(hookName) || this.hooks.get(hookName).size === 0) {
            return [];
        }
        const handlers = Array.from(this.hooks.get(hookName));
        const results = [];
        this.logger.verbose(`Executing hook: ${hookName} with ${handlers.length} handlers`, { metadata: { hookName, handlerCount: handlers.length } });
        const context = {
            name: hookName,
            version: '1.0.0',
            config: {},
            logger: this.logger,
            get: () => null,
            log: (message) => this.logger.log(message),
            error: (message, trace) => this.logger.error(message, trace),
            warn: (message) => this.logger.warn(message),
            debug: (message) => this.logger.debug(message),
            verbose: (message) => this.logger.verbose(message),
            emit: async () => Promise.resolve()
        };
        for (const handler of handlers) {
            try {
                const result = await handler(data, context);
                if (result !== undefined && result !== null) {
                    results.push(result);
                }
            }
            catch (error) {
                this.logger.error(`Error executing handler for hook ${hookName}: ${error.message}`, error.stack);
            }
        }
        return results;
    }
    async executeHookChain(hookName, initialData, initialResult) {
        if (!this.hooks.has(hookName) || this.hooks.get(hookName).size === 0) {
            return initialResult;
        }
        const handlers = Array.from(this.hooks.get(hookName));
        let currentResult = initialResult;
        this.logger.verbose(`Executing hook chain: ${hookName} with ${handlers.length} handlers`, { metadata: { hookName, handlerCount: handlers.length } });
        const context = {
            name: hookName,
            version: '1.0.0',
            config: {},
            logger: this.logger,
            get: () => null,
            log: (message) => this.logger.log(message),
            error: (message, trace) => this.logger.error(message, trace),
            warn: (message) => this.logger.warn(message),
            debug: (message) => this.logger.debug(message),
            verbose: (message) => this.logger.verbose(message),
            emit: async () => Promise.resolve()
        };
        for (const handler of handlers) {
            try {
                const hookResult = await handler({
                    data: initialData,
                    result: currentResult,
                }, context);
                if (hookResult && hookResult.result !== undefined) {
                    currentResult = hookResult.result;
                }
                if (hookResult && hookResult.break === true) {
                    this.logger.verbose(`Hook chain ${hookName} broken by handler`);
                    break;
                }
            }
            catch (error) {
                this.logger.error(`Error executing handler for hook chain ${hookName}: ${error.message}`, error.stack);
            }
        }
        return currentResult;
    }
};
exports.HookService = HookService;
exports.HookService = HookService = HookService_1 = __decorate([
    (0, common_1.Injectable)(),
    __metadata("design:paramtypes", [])
], HookService);
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