import { AddInstanceDialog } from "./add_an_instance.mjs";
import { initializeInstanceDetailsDialog } from "./confirm_instance_details.mjs";
import { Dialog } from "./dialog.mjs";
import storageManager, { Instance } from "./storage_manager.mjs";

export class AddInstanceFlow {
    addDialog: AddInstanceDialog;
    spinnerDialog: Dialog;
    detailsDialog: HTMLDialogElement;

    constructor(
        addDialog: AddInstanceDialog | HTMLDialogElement,
        spinnerDialog: HTMLDialogElement,
        detailsDialog: HTMLDialogElement,
    ) {
        if (addDialog instanceof AddInstanceDialog)
            this.addDialog = addDialog;
        else
            this.addDialog = new AddInstanceDialog(addDialog, true);
        this.spinnerDialog = new Dialog(spinnerDialog);
        this.detailsDialog = detailsDialog;
    }

    async start() {
        const instanceDetailsDialogCallback = (
            name: string,
            host: string,
            hostSecure: boolean,
            software: string,
            icon: string | null
        ) => {
            const instance: Instance = {
                name,
                origin: `http${hostSecure ? "s" : ""}://${host}`,
                software,
                iconURL: icon ?? undefined
            };
            storageManager.storage.instances.push(instance);
            storageManager.save();
            console.log("Successfully added new instance:", instance);
        };

        const {
            showInstanceDetailsDialog,
            hideInstanceDetailsDialog,
            populateInstanceDetailsDialog
        } = initializeInstanceDetailsDialog(this.detailsDialog, instanceDetailsDialogCallback);

        const {
            autoQueryMetadata,
            host,
            secure,
        } = await this.addDialog.prompt();

        try {
            if (!autoQueryMetadata) throw null; // Skip to catch block

            this.spinnerDialog.open();

            const { name, software, iconURL } =
                await fetch(`/api/instance_info/${secure}/${encodeURIComponent(host)}`)
                    .then(r => r.json());
            if (
                typeof name !== "string"
                || typeof software !== "string"
                || !(typeof iconURL === "string" || iconURL === null) // I guess TS is too stupid to understand this?
            )
                throw new Error("Invalid API response");

            populateInstanceDetailsDialog(name, host, secure, software, iconURL as string | null);
        } catch {
            populateInstanceDetailsDialog(host, host, secure, "", null);
        } finally {
            this.spinnerDialog.close();
            showInstanceDetailsDialog();
        }
    }
}