import { Target, TargetHealthCheck, db, targetHealthCheck } from "@server/db";
import { sendToClient } from "#dynamic/routers/ws";
import logger from "@server/logger";
import { eq, inArray } from "drizzle-orm";

export async function addTargets(
    newtId: string,
    targets: Target[],
    healthCheckData: TargetHealthCheck[],
    protocol: string,
    port: number | null = null
) {
    //create a list of udp and tcp targets
    const payloadTargets = targets.map((target) => {
        return `${target.internalPort ? target.internalPort + ":" : ""}${
            target.ip
        }:${target.port}`;
    });

    await sendToClient(newtId, {
        type: `newt/${protocol}/add`,
        data: {
            targets: payloadTargets
        }
    });

    // Create a map for quick lookup
    const healthCheckMap = new Map<number, TargetHealthCheck>();
    healthCheckData.forEach(hc => {
        healthCheckMap.set(hc.targetId, hc);
    });

    const healthCheckTargets = targets.map((target) => {
        const hc = healthCheckMap.get(target.targetId);
        
        // If no health check data found, skip this target
        if (!hc) {
            logger.warn(`No health check configuration found for target ${target.targetId}`);
            return null;
        }

        // Ensure all necessary fields are present
        if (!hc.hcPath || !hc.hcHostname || !hc.hcPort || !hc.hcInterval || !hc.hcMethod) {
            logger.debug(`Skipping target ${target.targetId} due to missing health check fields`);
            return null; // Skip targets with missing health check fields
        }

        const hcHeadersParse = hc.hcHeaders ? JSON.parse(hc.hcHeaders) : null;
        const hcHeadersSend: { [key: string]: string } = {};
        if (hcHeadersParse) {
            // transform
            hcHeadersParse.forEach((header: { name: string; value: string }) => {
                hcHeadersSend[header.name] = header.value;
            });
        }

        return {
            id: target.targetId,
            hcEnabled: hc.hcEnabled,
            hcPath: hc.hcPath,
            hcScheme: hc.hcScheme,
            hcMode: hc.hcMode,
            hcHostname: hc.hcHostname,
            hcPort: hc.hcPort,
            hcInterval: hc.hcInterval, // in seconds
            hcUnhealthyInterval: hc.hcUnhealthyInterval, // in seconds
            hcTimeout: hc.hcTimeout, // in seconds
            hcHeaders: hcHeadersSend,
            hcMethod: hc.hcMethod,
            hcTlsServerName: hc.hcTlsServerName,
        };
    });

    // Filter out any null values from health check targets
    const validHealthCheckTargets = healthCheckTargets.filter((target) => target !== null);

    await sendToClient(newtId, {
        type: `newt/healthcheck/add`,
        data: {
            targets: validHealthCheckTargets
        }
    });
}

export async function removeTargets(
    newtId: string,
    targets: Target[],
    protocol: string,
    port: number | null = null
) {
    //create a list of udp and tcp targets
    const payloadTargets = targets.map((target) => {
        return `${target.internalPort ? target.internalPort + ":" : ""}${
            target.ip
        }:${target.port}`;
    });

    await sendToClient(newtId, {
        type: `newt/${protocol}/remove`,
        data: {
            targets: payloadTargets
        }
    });

    const healthCheckTargets = targets.map((target) => {
        return target.targetId;
    });

    await sendToClient(newtId, {
        type: `newt/healthcheck/remove`,
        data: {
            ids: healthCheckTargets
        }
    });
}