// file: kb_app/frontend/ts/demo_ws_manager.ts

import * as bootstrap from "bootstrap";
import "simplebar";
import ResizeObserver from "resize-observer-polyfill";
import { invoke } from "@tauri-apps/api/core";
import { listen } from "@tauri-apps/api/event";
import { debug, takeoverConsole } from "@fltsci/tauri-plugin-tracing";

(window as Window & typeof globalThis & { bootstrap?: typeof bootstrap }).bootstrap = bootstrap;
(window as Window & typeof globalThis & { ResizeObserver?: typeof ResizeObserver }).ResizeObserver = ResizeObserver;

type DemoWsManagerEndpointSummary = {
    name: string;
    resolvedUrl: string;
    provider: string;
    roles: string[];
    connectionState: string;
    activeSubscriptionCount: number;
};

type DemoWsManagerSnapshotPayload = {
    endpointCount: number;
    startedCount: number;
    endpoints: DemoWsManagerEndpointSummary[];
};

const endpointCountText = document.querySelector<HTMLSpanElement>("#demoWsManagerEndpointCountText");
const startedCountText = document.querySelector<HTMLSpanElement>("#demoWsManagerStartedCountText");
const roleSelect = document.querySelector<HTMLSelectElement>("#demoWsManagerRoleSelect");
const tableBody = document.querySelector<HTMLTableSectionElement>("#demoWsManagerTableBody");
const logTextarea = document.querySelector<HTMLTextAreaElement>("#demoWsManagerLogTextarea");
const startAllButton = document.querySelector<HTMLButtonElement>("#demoWsManagerStartAllButton");
const stopAllButton = document.querySelector<HTMLButtonElement>("#demoWsManagerStopAllButton");
const refreshButton = document.querySelector<HTMLButtonElement>("#demoWsManagerRefreshButton");
const startRoleButton = document.querySelector<HTMLButtonElement>("#demoWsManagerStartRoleButton");
const stopRoleButton = document.querySelector<HTMLButtonElement>("#demoWsManagerStopRoleButton");
const clearLogButton = document.querySelector<HTMLButtonElement>("#demoWsManagerClearLogButton");

function appendLogLine(line: string): void {
    if (!logTextarea) {
        return;
    }
    const prefix = logTextarea.value.length > 0 ? "\n" : "";
    logTextarea.value += `${prefix}${line}`;
    logTextarea.scrollTop = logTextarea.scrollHeight;
}

function renderSnapshot(snapshot: DemoWsManagerSnapshotPayload): void {
    if (endpointCountText) {
        endpointCountText.textContent = String(snapshot.endpointCount);
    }
    if (startedCountText) {
        startedCountText.textContent = String(snapshot.startedCount);
    }
    if (!tableBody) {
        return;
    }

    tableBody.innerHTML = "";

    for (const endpoint of snapshot.endpoints) {
        const row = document.createElement("tr");
        row.innerHTML = `
            <td>
                <div class="fw-semibold">${endpoint.name}</div>
                <div class="small text-body-secondary">${endpoint.resolvedUrl}</div>
            </td>
            <td>${endpoint.provider}</td>
            <td>${endpoint.roles.join(", ")}</td>
            <td>${endpoint.connectionState}</td>
            <td>${endpoint.activeSubscriptionCount}</td>
        `;
        tableBody.appendChild(row);
    }
}

async function refreshSnapshot(): Promise<void> {
    try {
        const snapshot = await invoke<DemoWsManagerSnapshotPayload>("demo_ws_manager_get_snapshot");
        renderSnapshot(snapshot);
        appendLogLine("[ui] refreshed manager snapshot");
    } catch (error) {
        appendLogLine(`[ui] snapshot error: ${String(error)}`);
    }
}

async function loadRoles(): Promise<void> {
    if (!roleSelect) {
        return;
    }

    roleSelect.innerHTML = "";

    try {
        const roles = await invoke<string[]>("demo_ws_manager_list_roles");
        for (const role of roles) {
            const option = document.createElement("option");
            option.value = role;
            option.textContent = role;
            roleSelect.appendChild(option);
        }
    } catch (error) {
        appendLogLine(`[ui] list roles error: ${String(error)}`);
    }
}

async function startAll(): Promise<void> {
    try {
        const snapshot = await invoke<DemoWsManagerSnapshotPayload>("demo_ws_manager_start_all");
        renderSnapshot(snapshot);
    } catch (error) {
        appendLogLine(`[ui] start all error: ${String(error)}`);
    }
}

async function stopAll(): Promise<void> {
    try {
        const snapshot = await invoke<DemoWsManagerSnapshotPayload>("demo_ws_manager_stop_all");
        renderSnapshot(snapshot);
    } catch (error) {
        appendLogLine(`[ui] stop all error: ${String(error)}`);
    }
}

async function startRole(): Promise<void> {
    if (!roleSelect || roleSelect.value.trim().length === 0) {
        appendLogLine("[ui] no role selected");
        return;
    }

    try {
        const snapshot = await invoke<DemoWsManagerSnapshotPayload>("demo_ws_manager_start_role", {
            role: roleSelect.value,
        });
        renderSnapshot(snapshot);
    } catch (error) {
        appendLogLine(`[ui] start role error: ${String(error)}`);
    }
}

async function stopRole(): Promise<void> {
    if (!roleSelect || roleSelect.value.trim().length === 0) {
        appendLogLine("[ui] no role selected");
        return;
    }

    try {
        const snapshot = await invoke<DemoWsManagerSnapshotPayload>("demo_ws_manager_stop_role", {
            role: roleSelect.value,
        });
        renderSnapshot(snapshot);
    } catch (error) {
        appendLogLine(`[ui] stop role error: ${String(error)}`);
    }
}

document.addEventListener("DOMContentLoaded", async () => {
    void takeoverConsole();
    debug("demo_ws_manager window loaded");

    const sidebarToggle = document.querySelector<HTMLButtonElement>('#sidebarToggle');
    if (sidebarToggle) {
        // restaurer l’état depuis localStorage
        if (localStorage.getItem('sidebar-toggle') === 'true') {
            document.body.classList.add('sidenav-toggled');
        }

        sidebarToggle.addEventListener('click', (event) => {
            event.preventDefault();
            document.body.classList.toggle('sidenav-toggled');
            localStorage.setItem('sidebar-toggle', document.body.classList.contains('sidenav-toggled') ? 'true' : 'false');
        });
    }

    const tooltipTriggerList = document.querySelectorAll('[data-bs-toggle="tooltip"]');
    Array.from(tooltipTriggerList).map(tooltipTriggerEl => new bootstrap.Tooltip(tooltipTriggerEl));
    const toastElList = document.querySelectorAll('.toast');
    Array.from(toastElList).map(toastEl => new bootstrap.Toast(toastEl));
    const popoverTriggerList = document.querySelectorAll('[data-bs-toggle="popover"]');
    Array.from(popoverTriggerList).map(popoverTriggerEl => new bootstrap.Popover(popoverTriggerEl));

    const gobackto = location.pathname + location.search;

    document.querySelectorAll<HTMLAnchorElement>('a[data-setlang]').forEach((a) => {
        const href = a.getAttribute("href");
        if (!href) return; // pas de href => on ignore

        const url = new URL(href, location.origin);
        url.searchParams.set("gobackto", gobackto);

        // conserve une URL relative (path + query)
        a.setAttribute("href", url.pathname + "?" + url.searchParams.toString());
    });

    if (startAllButton) {
        startAllButton.addEventListener("click", () => {
            void startAll();
        });
    }
    if (stopAllButton) {
        stopAllButton.addEventListener("click", () => {
            void stopAll();
        });
    }
    if (refreshButton) {
        refreshButton.addEventListener("click", () => {
            void refreshSnapshot();
        });
    }
    if (startRoleButton) {
        startRoleButton.addEventListener("click", () => {
            void startRole();
        });
    }
    if (stopRoleButton) {
        stopRoleButton.addEventListener("click", () => {
            void stopRole();
        });
    }
    if (clearLogButton && logTextarea) {
        clearLogButton.addEventListener("click", () => {
            logTextarea.value = "";
        });
    }

    await listen<string>("kb-demo-ws-manager-log", (event) => {
        appendLogLine(event.payload);
    });

    await listen<DemoWsManagerSnapshotPayload>("kb-demo-ws-manager-snapshot", (event) => {
        renderSnapshot(event.payload);
    });

    await loadRoles();
    await refreshSnapshot();
});