"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);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
var RedisService_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.RedisService = void 0;
const common_1 = require("@nestjs/common");
const ioredis_1 = __importDefault(require("ioredis"));
let RedisService = RedisService_1 = class RedisService {
    // Keep client typed as any to avoid tight coupling to ioredis types in tests
    client = null;
    logger = new common_1.Logger(RedisService_1.name);
    lastLogAt = 0;
    LOG_THROTTLE_MS = 5000; // throttle repeated error logs
    onModuleInit() {
        const enabled = (process.env.REDIS_ENABLED || 'true').toLowerCase() === 'true';
        if (!enabled) {
            this.logger.log('Redis disabled via REDIS_ENABLED=false');
            return;
        }
        const url = process.env.REDIS_URL || 'redis://localhost:6379';
        // Use lazyConnect so application can start even if Redis is unavailable temporarily
        this.client = new ioredis_1.default(url, {
            lazyConnect: true,
            // limit retries to avoid infinite reconnect storms
            maxRetriesPerRequest: 5,
            // automatic reconnection strategy
            reconnectOnError: (err) => {
                return true;
            },
            enableOfflineQueue: true,
            // optional reconnect strategy
            retryStrategy: (times) => {
                // exponential backoff capped at 5s
                const delay = Math.min(50 * Math.pow(2, times), 5000);
                return delay;
            },
        });
        this.client.on('connect', () => this.logger.log('Connected to Redis'));
        this.client.on('ready', () => this.logger.log('Redis ready'));
        this.client.on('error', (err) => this.handleError(err));
        this.client.on('close', () => this.logger.warn('Redis connection closed'));
        this.client.on('reconnecting', () => this.logger.log('Redis reconnecting'));
        // attempt to connect but do not throw if it fails
        this.client.connect().catch((err) => {
            this.handleError(err);
        });
    }
    handleError(err) {
        const now = Date.now();
        if (now - this.lastLogAt > this.LOG_THROTTLE_MS) {
            this.logger.error('Redis error', err instanceof Error ? err.message : err);
            this.lastLogAt = now;
        }
    }
    onModuleDestroy() {
        if (this.client) {
            try {
                this.client.disconnect();
            }
            catch (e) {
                // ignore
            }
        }
    }
    getClient() {
        return this.client;
    }
    ensureClient() {
        // returns true if client is connected/usable
        return this.client && this.client.status && this.client.status !== 'end' && this.client.status !== 'close';
    }
    async get(key) {
        if (!this.ensureClient())
            return null;
        try {
            return await this.client.get(key);
        }
        catch (e) {
            this.handleError(e);
            return null;
        }
    }
    async set(key, value, ttlSeconds) {
        if (!this.ensureClient())
            return;
        try {
            if (ttlSeconds) {
                await this.client.set(key, value, 'EX', ttlSeconds);
            }
            else {
                await this.client.set(key, value);
            }
        }
        catch (e) {
            this.handleError(e);
        }
    }
    async del(key) {
        if (!this.ensureClient())
            return;
        try {
            await this.client.del(key);
        }
        catch (e) {
            this.handleError(e);
        }
    }
};
exports.RedisService = RedisService;
exports.RedisService = RedisService = RedisService_1 = __decorate([
    (0, common_1.Injectable)()
], RedisService);
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