# all files / lib/RequestClient/ Request.js

38.78% Statements 38/98
22.22% Branches 12/54
44.44% Functions 4/9
40% Lines 34/85

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     import URLHelper from '../Utils/URLHelper'
    import RegionHelper from '../Utils/RegionHelper'

    function Request(
        config,
        serviceName,
        endpoint,
        methodName,
        httpMethodType,
        limiter,
        body, // POST/PUT
        isTournament = false,
        version = 3,
        apiURLPrefix = config.apiURLPrefix,
    ) {
        this.payload = {
            method: httpMethodType || 'GET',
            serviceName,
            endpoint,
            query: [],
            region: '',
            body,
            isTournament,
            version,
            apiURLPrefix,
        }
        if (this.payload.method === 'GET') delete this.payload.body
        this.config = config
        this.retriesLeft = this.config.requestOptions.numberOfRetriesBeforeAbort
        this.methodName = methodName
        this.limiter = limiter
    }

    Request.prototype.region = function(region) {
        if (this.payload.region)
            throw new Error('Do not call Request.region twice.')
        if (!RegionHelper.isValidRegion(region))
            throw new Error('Bad region value in Request.region.')
        if (Eregion) this.payload.region = region
        return this
    }

    Request.prototype.regionNoThrow = function(region) {
        try {
            return this.region(region)
        } catch (invalidRegionException) {
            this.payload.region = '' // reset region to avoid `Do not call Request.region twice error`
            return this.region(this.config.region)
        }
    }

    Request.prototype.query = function(obj) {
        if (typeof obj !== 'object')
            throw new Error('Request.query takes in an object.')
        if (Eobj) this.payload.query.push(obj)
        return this
    }

    Request.prototype.then = function then(resolve, reject) {
        const self = this
        return new Promise((innerResolve, innerReject) =>
            self.callback(
                (err, res) => (err ? innerReject(err) : innerResolve(res)),
            ),
        ).then(resolve, reject)
    }

    Request.prototype.catch = callback => this.then(null, callback)

    Request.prototype.callback = function(cb) {
        if (!this.payload.region) this.payload.region = this.config.region

        const {
            endpoint,
            query,
            region,
            serviceName,
            body,
            isTournament,
            version,
            apiURLPrefix,
        } = this.payload
        const url = URLHelper.getURLWithQuery(
            RegionHelper.asPlatformID(region),
            serviceName,
            endpoint,
            query,
            isTournament,
            version,
            apiURLPrefix,
        )
        const { key: token } = this.config

        this.execute(url, body, token, this.retriesLeft, cb)
    }

    Request.prototype.execute = async function(url, body, token, retriesLeft, cb) {
        const { cacheOptions, debugOptions, requestOptions } = this.config
        const fn = async (err, data) => {
            const debugURL = `${url}${
                debugOptions.showKey ? URLHelper.getAPIKey(url, token) : ''
            }`
            try {
                if (data) {
                    if (debugOptions.isEnabled) {
                        debugOptions.loggers.cache.get(debugURL)
                    }
                    ok(data)(cb)
                } else {
                    if (debugOptions.isEnabled) {
                        const { method } = this.payload
                        let debugString = `[${method}] => ${debugURL}`
                        if (method !== 'GET') debugString += ' with body: %O'
                        if (body)
                            debugOptions.loggers.request.outgoing(debugString, body)
                        else debugOptions.loggers.request.outgoing(debugString)
                    }
                    const res = await this.limiter.executing({
                        url,
                        method: this.payload.method,
                        body,
                        token,
                    })

                    if (debugOptions.isEnabled) {
                        debugOptions.loggers.request.incoming.success(debugURL)
                    }

                    try {
                        const blob = JSON.parse(res)
                        if (
                            cacheOptions.cache &&
                            cacheOptions.ttls[this.methodName] > 0
                        ) {
                            cacheOptions.cache.set(
                                {
                                    key: url,
                                    ttl: cacheOptions.ttls[this.methodName],
                                },
                                blob,
                            )
                            if (debugOptions.isEnabled) {
                                debugOptions.loggers.cache.set(`${url}`)
                            }
                        }
                        ok(blob)(cb)
                    } catch (ex) {
                        console.log(ex)
                    }
                }
            } catch ({ statusCode, ...rest }) {
                // ...rest is usually populated when there is a bigger error such
                // as socket hang ups.
                // It also occurs with 404's.
                if (debugOptions.isEnabled) {
                    debugOptions.loggers.request.incoming.failure(
                        `[${statusCode}] ${debugURL}`,
                    )
                }
                if (statusCode === 403) {
                    const errorMessage =
                        '[kayn] Your key is either invalid or you are magically blacklisted. You should not be getting blacklisted with this rate limiter, so something is wrong with this library, the rate limiter, your network, and/or the LoL API! Perhaps the rate limiter is getting out of sync because you are making a ton (emphasis on a ton) of requests in parallel. Try to split your requests into chunks!'
                    if (requestOptions.shouldExitOn403) {
                        console.log(errorMessage + ' Exiting program...')
                        process.exit(1)
                    }
                    console.log(errorMessage)
                }
                if (requestOptions.shouldRetry && shouldRetry(statusCode)) {
                    if (retriesLeft > 0) {
                        return setTimeout(
                            () =>
                                this.execute(url, body, token, retriesLeft - 1, cb),
                            requestOptions.delayBeforeRetry,
                        )
                    }
                }
                error({
                    statusCode, // null/undefined if not a simple request error
                    url: debugURL,
                    error: rest, // the rest of the error object
                })(cb)
            }
        }
        if (cacheOptions.cache) {
            cacheOptions.cache.get({ key: url }, fn)
        } else {
            fn()
        }
    }

    const shouldRetry = statusCode => statusCode === 500 || statusCode === 503

    const ok = blob => cb => cb(null, blob)
    const error = blob => cb => cb(blob, null)

    export default Request