const NotificationProvider = require("./notification-provider");
const axios = require("axios");
const {DOWN, UP} = require("../../src/util");

class ZohoCliq extends NotificationProvider {

    name = "ZohoCliq";

    /**
     * Generate the message to send
     * @param {const} status The status constant
     * @param {string} monitorName Name of monitor
     * @returns {string}
     */
    _statusMessageFactory = (status, monitorName) => {
        if (status === DOWN) {
            return `🔴 Application [${monitorName}] went down\n`;
        } else if (status === UP) {
            return `✅ Application [${monitorName}] is back online\n`;
        }
        return "Notification\n";
    };

    /**
     * Send the notification
     * @param {string} webhookUrl URL to send the request to
     * @param {Array} payload Payload generated by _notificationPayloadFactory
     */
    _sendNotification = async(webhookUrl, payload) => {
        await axios.post(webhookUrl, {text: payload.join("\n")});
    };

    /**
     * Generate payload for notification
     * @param {const} status The status of the monitor
     * @param {string} monitorMessage Message to send
     * @param {string} monitorName Name of monitor affected
     * @param {string} monitorUrl URL of monitor affected
     * @returns {Array}
     */
    _notificationPayloadFactory = ({
       status,
       monitorMessage,
       monitorName,
       monitorUrl,
   }) => {

        const payload = ["### Uptime Kuma\n"];
        payload.push(this._statusMessageFactory(status, monitorName));
        payload.push(`*Description:* ${monitorMessage}`);

        if (monitorName) {
            payload.push(`*Monitor:* ${monitorName}`);
        }

        if (monitorUrl && monitorUrl !== "https://") {
            payload.push(`*URL:* [${monitorUrl}](${monitorUrl})`);
        }

        return payload;
    };

    /**
     * Send a general notification
     * @param {string} webhookUrl URL to send request to
     * @param {string} msg Message to send
     * @returns {Promise<void>}
     */
    _handleGeneralNotification = (webhookUrl, msg) => {
        const payload = this._notificationPayloadFactory({
            monitorMessage: msg
        });

        return this._sendNotification(webhookUrl, payload);
    };

    _monitorUrlFactory = (monitorJSON) => {
        let url;
        switch(monitorJSON["type"]) {
            case "http":
            case "keywork":
                url = monitorJSON["url"];
                break;
            case "docker":
                url = monitorJSON["docker_host"];
                break;
            default:
                url = monitorJSON["hostname"];
                break;
        }
        return url;
    };

    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
        let okMsg = "Sent Successfully.";

        try {
            if (heartbeatJSON == null) {
                await this._handleGeneralNotification(notification.webhookUrl, msg);
                return okMsg;
            }

            const payload = this._notificationPayloadFactory({
                monitorMessage: heartbeatJSON.msg,
                monitorName: monitorJSON.name,
                monitorUrl: this._monitorUrlFactory(monitorJSON),
                status: heartbeatJSON.status,
            });

            await this._sendNotification(notification.webhookUrl, payload);
            return okMsg;

        } catch(error) {
            this.throwGeneralAxiosError(error);
        }
    }
}

module.exports = ZohoCliq;