sma-solar/dist/client.js

http client for sma solar webconnect portal

import querystring from "querystring";
export function isSMAResponse(response) {
    return (typeof response === "object" &&
        response !== null &&
        (("err" in response && typeof response.err === "number") ||
            "result" in response));
}
export async function createClient(host, role = "", password = "") {
    const client = new Client(host, role, password);
    await client.init();
    return client;
}
export class Client {
    host;
    role;
    password;
    port = 80;
    protocol = "http";
    metadata = {};
    codes = {};
    sessionID = "";
    constructor(host, role = "usr", password = "") {
        this.host = host;
        this.role = role;
        this.password = password;
    }
    init() {
        return Promise.all([
            this._get("/data/ObjectMetadata_Istl.json").then((result) => {
                this.metadata = result;
            }),
            this._get("/data/l10n/en-US.json").then((result) => {
                this.codes = result;
            }),
        ]);
    }
    async _get(path, query) {
        return fetch(`${this.protocol}://${this.host}:${this.port}/${path.replace(/^\//, "")}?${querystring.stringify(query)}`, {
            method: "GET",
        })
            .then((r) => r.json())
            .then((response) => {
            if (response.err) {
                throw response;
            }
            return response;
        });
    }
    async _post(path, query, data) {
        return fetch(`${this.protocol}://${this.host}:${this.port}/${path.replace(/^\//, "")}?${querystring.stringify(query)}`, {
            method: "POST",
            headers: {
                "Content-Type": "application/json",
            },
            body: JSON.stringify(data),
        })
            .then((r) => r.json())
            .then((response) => {
            if (response.err) {
                throw response;
            }
            return response;
        });
    }
    async _postWithSession(path, query, data) {
        if (!this.sessionID) {
            await this.login(this.password, this.role);
            query = { ...query, sid: this.sessionID };
        }
        return this._post(path, query, data).catch((response) => {
            if (!response.err) {
                return response;
            }
            if (response.err == 401 && this.password) {
                return this.login(this.password, this.role).then(() => {
                    query = { ...query, sid: this.sessionID };
                    return this._post(path, query, data);
                });
            }
            throw response;
        });
    }
    async login(password, role = "usr") {
        return this._post("/dyn/login.json", undefined, {
            right: role || "usr",
            pass: password,
        }).then((response) => {
            if (!response?.result?.sid) {
                throw response;
            }
            this.sessionID = response.result.sid;
            return response?.result;
        });
    }
    async getAllOnlValues(devices = []) {
        return this._postWithSession(`/dyn/getAllOnlValues.json`, { sid: this.sessionID }, {
            destDev: devices || [],
        }).then((response) => {
            if (!response?.result) {
                throw response;
            }
            return response?.result;
        });
    }
}
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