import { app } from "../../../scripts/app.js";
import { api } from "../../../scripts/api.js";

let loopEnabled = false;
let activeAudio = null;
let activeBtn = null;

function stopActive() {
    if (activeAudio) {
        activeAudio.pause();
        activeAudio = null;
    }
    if (activeBtn) {
        activeBtn.textContent = "\u25B6";
        activeBtn.style.color = "#8f8";
        activeBtn = null;
    }
}

async function refreshFileList(node) {
    try {
        const resp = await api.fetchApi("/audiocraft/list");
        const data = await resp.json();
        const container = node._managerContainer;
        container.innerHTML = "";
        buildContent(container, data.summary, data.files);

        const listHeight = Math.min(40 + data.files.length * 26, 800);
        node._managerWidget.computeSize = () => [node.size[0], listHeight];
        node.setSize([Math.max(node.size[0], 500), listHeight + 80]);
        app.graph.setDirtyCanvas(true);
    } catch (e) {
        console.error("Refresh failed:", e);
    }
}

app.registerExtension({
    name: "AudioCraft.AudioManager",
    async beforeRegisterNodeDef(nodeType, nodeData, app) {
        if (nodeData.name === "AudioManager") {
            const origOnNodeCreated = nodeType.prototype.onNodeCreated;
            nodeType.prototype.onNodeCreated = function () {
                origOnNodeCreated?.apply(this, arguments);

                const container = document.createElement("div");
                container.style.cssText = "padding:4px;overflow-y:auto;";

                const loadingMsg = document.createElement("div");
                loadingMsg.textContent = "Klicke \u21BB Refresh um Dateien zu laden";
                loadingMsg.style.cssText = "color:#888;font-size:12px;padding:8px;";
                container.appendChild(loadingMsg);

                this._managerContainer = container;
                this._managerWidget = this.addDOMWidget("audio_manager", "dom", container, {
                    serialize: false,
                    hideOnZoom: false,
                });
                this._managerWidget.computeSize = () => [this.size[0], 60];

                // Auto-refresh on creation
                setTimeout(() => refreshFileList(this), 500);
            };

            // Also refresh when node is executed via Queue
            const onExecuted = nodeType.prototype.onExecuted;
            nodeType.prototype.onExecuted = function (message) {
                onExecuted?.apply(this, arguments);
                refreshFileList(this);
            };
        }
    },
});

// Listen for any prompt execution to auto-refresh AudioManager nodes
api.addEventListener("executed", (event) => {
    // After any node executes, refresh all AudioManager nodes
    if (event?.detail?.node) {
        const nodes = app.graph._nodes.filter(n => n.type === "AudioManager");
        for (const node of nodes) {
            if (node._managerContainer) {
                refreshFileList(node);
            }
        }
    }
});

function buildContent(container, summary, files) {
    const headerRow = document.createElement("div");
    headerRow.style.cssText = "display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;padding:4px;background:#333;border-radius:4px;gap:4px;";

    const headerText = document.createElement("span");
    headerText.textContent = summary;
    headerText.style.cssText = "font-weight:bold;color:#fff;font-size:12px;white-space:nowrap;";

    const btnGroup = document.createElement("div");
    btnGroup.style.cssText = "display:flex;gap:4px;";

    const refreshBtn = document.createElement("button");
    refreshBtn.textContent = "\u21BB Refresh";
    refreshBtn.style.cssText = "background:#2a3a5a;border:none;color:#8cf;cursor:pointer;padding:3px 8px;border-radius:3px;font-size:11px;white-space:nowrap;";
    refreshBtn.onclick = () => {
        const node = app.graph._nodes.find(n => n._managerContainer === container.parentElement || n._managerContainer === container);
        if (node) refreshFileList(node);
    };

    const loopBtn = document.createElement("button");
    loopBtn.textContent = loopEnabled ? "\uD83D\uDD01 Loop AN" : "\uD83D\uDD01 Loop";
    loopBtn.style.cssText = `background:${loopEnabled ? "#2a5a2a" : "#444"};border:none;color:${loopEnabled ? "#8f8" : "#888"};cursor:pointer;padding:3px 8px;border-radius:3px;font-size:11px;white-space:nowrap;`;
    loopBtn.onclick = () => {
        loopEnabled = !loopEnabled;
        loopBtn.textContent = loopEnabled ? "\uD83D\uDD01 Loop AN" : "\uD83D\uDD01 Loop";
        loopBtn.style.background = loopEnabled ? "#2a5a2a" : "#444";
        loopBtn.style.color = loopEnabled ? "#8f8" : "#888";
        if (activeAudio) activeAudio.loop = loopEnabled;
    };

    btnGroup.appendChild(refreshBtn);
    btnGroup.appendChild(loopBtn);
    headerRow.appendChild(headerText);
    headerRow.appendChild(btnGroup);
    container.appendChild(headerRow);

    if (files.length === 0) return;

    for (const f of files) {
        const row = document.createElement("div");
        row.style.cssText = "display:flex;align-items:center;padding:3px 2px;font-size:11px;color:#ccc;border-bottom:1px solid #333;min-height:22px;";

        const name = document.createElement("span");
        name.textContent = f.name;
        name.style.cssText = "overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;margin-right:6px;";

        const size = document.createElement("span");
        size.textContent = f.size_mb + " MB";
        size.style.cssText = "color:#8cf;min-width:55px;text-align:right;margin-right:6px;font-size:10px;";

        const playBtn = document.createElement("button");
        playBtn.textContent = "\u25B6";
        playBtn.title = "Abspielen";
        playBtn.style.cssText = "background:#444;border:none;color:#8f8;cursor:pointer;padding:2px 8px;border-radius:3px;font-size:11px;margin-right:4px;";

        const audioSrc = api.apiURL(
            `/view?filename=${encodeURIComponent(f.name)}&subfolder=audio&type=output`
        );

        const dlBtn = document.createElement("a");
        dlBtn.href = audioSrc;
        dlBtn.download = f.name;
        dlBtn.textContent = "\u2B07";
        dlBtn.title = "Download";
        dlBtn.style.cssText = "color:#8cf;text-decoration:none;font-size:13px;padding:0 4px;";

        const delBtn = document.createElement("button");
        delBtn.textContent = "\u2716";
        delBtn.title = "Loeschen";
        delBtn.style.cssText = "background:#533;border:none;color:#f66;cursor:pointer;padding:2px 6px;border-radius:3px;font-size:11px;margin-left:4px;";
        delBtn.onclick = async () => {
            if (activeBtn === playBtn) stopActive();
            try {
                const resp = await api.fetchApi("/audiocraft/delete", {
                    method: "POST",
                    headers: {"Content-Type": "application/json"},
                    body: JSON.stringify({filename: f.name}),
                });
                if (resp.ok) {
                    row.style.opacity = "0.3";
                    row.style.pointerEvents = "none";
                    delBtn.textContent = "\u2714";
                    delBtn.style.color = "#888";
                }
            } catch (e) {
                console.error("Delete failed:", e);
            }
        };

        playBtn.onclick = () => {
            if (activeBtn === playBtn) {
                stopActive();
                return;
            }
            stopActive();

            const audio = new Audio(audioSrc);
            audio.loop = loopEnabled;
            audio.play();
            activeAudio = audio;
            activeBtn = playBtn;
            playBtn.textContent = "\u25A0";
            playBtn.style.color = "#f88";

            audio.onended = () => {
                if (!audio.loop) {
                    playBtn.textContent = "\u25B6";
                    playBtn.style.color = "#8f8";
                    activeAudio = null;
                    activeBtn = null;
                }
            };
        };

        row.appendChild(name);
        row.appendChild(size);
        row.appendChild(playBtn);
        row.appendChild(dlBtn);
        row.appendChild(delBtn);
        container.appendChild(row);
    }
}