import {createClient} from "redis";


async function createRedisClient() {
    const client = createClient({
        url: process.env.DEXORDER_REDIS_URL || 'redis://localhost:6379',
        returnBuffers: false,
    })
    client.on('error', (err) => console.log('Redis Client Error', err));
    await client.connect();
    return client
}


export const redis = await createRedisClient()
export const redisSubscriber = await createRedisClient()


export class CacheSet {

    constructor(series) {
        this.series = series
    }

    async contains(chain, key) {
        const result = await redis.sIsMember(`${chain}|${this.series}`, key)
        console.log('contains', `${chain}|${this.series}`, key, result)
        return result
    }

}


export class CacheDict {
    constructor(series) {
        this.series = series
    }

    async get(chain, key, default_=null) {
        const result = await redis.hGet(`${chain}|${this.series}`, key)
        return result === null ? default_ : '' + result
    }

    async contains(chain, key) {
        return await redis.hExists(`${chain}|${this.series}`, key)
    }

    async items(chain) {
        return Object.entries(await redis.hGetAll(`${chain}|${this.series}`)).map(([k, v]) => [k, v === null ? null : '' + v])
    }
}


export class CacheDictObject {
    constructor(series) {
        this.series = series
    }

    async get(chain, key) {
        return await redis.json.get(`${chain}|${this.series}`, key)
    }

    async contains(chain, key) {
        return await redis.json.get(`${chain}|${this.series}`, key) !== null
    }
}


export class CacheObject {
    constructor(series) {
        this.series = series
    }

    async get(chain) {
        return await redis.json.get(`${chain}|${this.series}`)
    }
}

const blockCaches = {
    '31337': new CacheObject('31337|latest_block'),
    '42161': new CacheObject('42161|latest_block'),
    '1337': new CacheObject('1337|latest_block'),
}

async function latestBlock(chain) {
    return await blockCaches[chain].get()
}

export const vaults = new CacheDict('v')
export const vaultBalances = new CacheDict('vb')
export const prices = new CacheDict('p')
export const orderStatuses = new CacheDict('o')
export const vaultOpenOrders = new CacheDict('voo')
export const vaultRecentlyClosedOrders = new CacheDict('vrco')
export const orderFilled = new CacheDict('of')
export const ohlcs = new CacheDict('ohlc')
export const marks = new CacheDict('mark.usd')