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

let loopEnabled = false;

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

                if (!message?.text) return;

                const summary = message.text[0]?.content || "";
                const files = message.files || [];

                if (this._managerWidget) {
                    this._managerContainer.innerHTML = "";
                    buildContent(this._managerContainer, summary, files);
                } else {
                    const container = document.createElement("div");
                    container.style.cssText = "padding:4px;overflow-y:auto;";
                    buildContent(container, summary, files);

                    this._managerContainer = container;
                    this._managerWidget = this.addDOMWidget("audio_manager", "dom", container, {
                        serialize: false,
                        hideOnZoom: false,
                    });
                }

                const listHeight = Math.min(40 + files.length * 26, 800);
                this._managerWidget.computeSize = () => [this.size[0], listHeight];
                this.setSize([Math.max(this.size[0], 500), listHeight + 80]);
                app.graph.setDirtyCanvas(true);
            };
        }
    },
});

// Track currently playing audio globally so only one plays at a time
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;
    }
}

function buildContent(container, summary, files) {
    // Header with summary + loop toggle
    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;";

    const headerText = document.createElement("span");
    headerText.textContent = summary;
    headerText.style.cssText = "font-weight:bold;color:#fff;font-size:13px;";

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

    headerRow.appendChild(headerText);
    headerRow.appendChild(loopBtn);
    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;";

        playBtn.onclick = () => {
            // If clicking the same button that's playing, stop it
            if (activeBtn === playBtn) {
                stopActive();
                return;
            }
            // Stop any other playing audio first
            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;
                }
            };
        };

        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 () => {
            // Stop if this file is playing
            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);
            }
        };

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