(function (global) {
    'use strict';

    /**
     * 资源进包（对齐 Cocos 构建规则）：
     * 1) 在 Bundle 目录/config 内 → 该 Bundle
     * 2) 不在任何 Bundle 内，被若干 Bundle 引用 → 优先级数字最大的 Bundle
     * 3) 无人引用 → internal
     * 优先级：config.priority，数字越大越高；无配置则 0。
     */

    function fmtType(asset) {
        var t = (asset && asset.constructor && asset.constructor.name) || 'Other';
        return String(t).replace(/^cc\./, '');
    }

    function memMB(bytes) {
        return (bytes || 0) / (1024 * 1024);
    }

    function texMemMB(tex) {
        if (!tex) return 0;
        var w = tex.width || 0;
        var h = tex.height || 0;
        if (!w || !h) {
            try {
                if (tex.image && tex.image.width) {
                    w = tex.image.width;
                    h = tex.image.height;
                }
            } catch (e) { /* */ }
        }
        return w && h ? memMB(w * h * 4 * 1.33) : 0;
    }

    function assetMem(asset, type, seenTex) {
        if (type === 'Texture2D' || type === 'Texture') {
            var key = String(asset._uuid || asset.uuid || '');
            if (key && seenTex[key]) return 0;
            if (key) seenTex[key] = 1;
            return texMemMB(asset);
        }
        if (type === 'SpriteFrame' || type === 'ImageAsset') return 0;
        if (type === 'AudioClip' || /Audio/.test(type)) {
            try {
                var d = asset.duration || (asset._nativeAsset && asset._nativeAsset.duration) || 0;
                return d ? memMB(d * 44100 * 2 * 2) : 0.2;
            } catch (e) { return 0.2; }
        }
        try {
            if (asset._nativeAsset && asset._nativeAsset.byteLength) return memMB(asset._nativeAsset.byteLength);
            if (asset.data && asset.data.byteLength) return memMB(asset.data.byteLength);
        } catch (e) { /* */ }
        return 0;
    }

    function frameSize(asset) {
        var rect = asset.rect || asset._rect;
        if (rect && rect.width) return { w: rect.width | 0, h: rect.height | 0 };
        return { w: asset.width | 0, h: asset.height | 0 };
    }

    function gfxTotals() {
        var cc = global.cc;
        var tex = 0;
        var buf = 0;
        var heap = 0;
        try {
            var st = cc && cc.profiler && cc.profiler.stats;
            if (st) {
                if (st.textureMemory && st.textureMemory.counter) tex = st.textureMemory.counter.value || 0;
                if (st.bufferMemory && st.bufferMemory.counter) buf = st.bufferMemory.counter.value || 0;
            }
        } catch (e) { /* */ }
        try {
            if (performance.memory && performance.memory.usedJSHeapSize) {
                heap = performance.memory.usedJSHeapSize / (1024 * 1024);
            }
        } catch (e2) { /* */ }
        return { gfxTextureMB: tex, gfxBufferMB: buf, jsHeapMB: heap };
    }

    /** 优先级：数字越大越高 */
    function readPriority(bundle, name) {
        try {
            if (bundle && bundle.priority != null && isFinite(bundle.priority)) return Number(bundle.priority);
        } catch (e) { /* */ }
        try {
            var cfg = bundle && bundle._config;
            if (cfg && cfg.priority != null && isFinite(cfg.priority)) return Number(cfg.priority);
        } catch (e2) { /* */ }
        try {
            if (bundle && bundle._priority != null && isFinite(bundle._priority)) return Number(bundle._priority);
        } catch (e3) { /* */ }
        return 0;
    }

    /** nativeUrl 里的包名：…/home/import/… → home */
    function bundleFromUrl(url) {
        if (!url) return '';
        var m = String(url).match(/\/([A-Za-z0-9_\-]+)\/(?:import|native|js|ohm|chunks)\//i);
        return m && m[1] ? m[1] : '';
    }

    /**
     * 建 uuid → bundle 显式索引（构建归属）。
     * 顺序：nativeUrl → getAssetInfo → cache → config.paths/packs
     */
    function buildIndex(cc) {
        var uuidMap = {};
        var pathMap = {};
        var packOf = {};
        var packMembers = {};
        var bundleObjs = [];
        var list = [];

        cc.assetManager.bundles.forEach(function (bundle, name) {
            var n = name || (bundle && bundle.name) || '';
            if (!n || !bundle) return;
            bundle.__pwName = n;
            bundleObjs.push(bundle);
            list.push({
                name: n,
                assetCount: 0,
                memMB: 0,
                texMB: 0,
                audioMB: 0,
                otherMB: 0,
                status: 'loaded',
                priority: readPriority(bundle, n),
            });

            var put = function (u) {
                if (u != null && u !== '') uuidMap[String(u)] = n;
            };

            // cache
            try {
                var cache = bundle.cache || bundle._cache;
                if (cache && cache._map) {
                    var keys = Object.keys(cache._map);
                    for (var i = 0; i < keys.length; i++) {
                        if (cache._map[keys[i]]) put(keys[i]);
                    }
                }
                if (cache && typeof cache.forEach === 'function') {
                    cache.forEach(function (asset, uuid) {
                        put(uuid);
                        if (asset) put(asset._uuid);
                    });
                }
            } catch (e) { /* */ }

            // config.paths
            try {
                var cfg = bundle._config;
                var paths = cfg && cfg.paths;
                if (paths) {
                    for (var p in paths) {
                        if (!Object.prototype.hasOwnProperty.call(paths, p)) continue;
                        var val = paths[p];
                        var listU = Array.isArray(val) ? val : (val ? [val] : []);
                        for (var j = 0; j < listU.length; j++) {
                            var uu = listU[j];
                            if (uu && typeof uu === 'object') uu = uu.uuid;
                            if (typeof uu === 'string' && uu) {
                                put(uu);
                                if (!pathMap[uu]) pathMap[uu] = p;
                            }
                        }
                    }
                }
                // config.packs（自动图集）
                var packs = cfg && cfg.packs;
                if (packs) {
                    for (var packId in packs) {
                        if (!Object.prototype.hasOwnProperty.call(packs, packId)) continue;
                        var members = packs[packId];
                        if (!members) continue;
                        packMembers[packId] = packMembers[packId] || [];
                        var arr = Array.isArray(members) ? members : [members];
                        for (var m = 0; m < arr.length; m++) {
                            var um = arr[m];
                            if (um && typeof um === 'object') um = um.uuid;
                            if (!um) continue;
                            put(um);
                            packOf[String(um)] = packId;
                            packMembers[packId].push(String(um));
                        }
                    }
                }
            } catch (e2) { /* */ }
        });

        return {
            list: list,
            uuidMap: uuidMap,
            pathMap: pathMap,
            packOf: packOf,
            packMembers: packMembers,
            bundleObjs: bundleObjs,
        };
    }

    /** 对每个资源：getAssetInfo / nativeUrl 再补一轮归属 */
    function refineOwnership(cc, bi, rows) {
        var objs = bi.bundleObjs || [];
        for (var i = 0; i < rows.length; i++) {
            var row = rows[i];
            var id = row.uuid;
            if (bi.uuidMap[id]) continue;

            // nativeUrl
            var asset = null;
            try {
                asset = cc.assetManager.assets.get(id);
            } catch (e) { asset = null; }
            var fromUrl = bundleFromUrl(asset && (asset.nativeUrl || asset._nativeUrl));
            if (fromUrl) {
                bi.uuidMap[id] = fromUrl;
                row.bundle = fromUrl;
                continue;
            }

            // getAssetInfo
            for (var b = 0; b < objs.length; b++) {
                var bundle = objs[b];
                if (!bundle || typeof bundle.getAssetInfo !== 'function') continue;
                try {
                    var info = bundle.getAssetInfo(id);
                    if (info && (info.path != null || info.uuid || info.redirect)) {
                        bi.uuidMap[id] = bundle.__pwName || bundle.name;
                        row.bundle = bi.uuidMap[id];
                        if (info.path && !bi.pathMap[id]) bi.pathMap[id] = info.path;
                        break;
                    }
                } catch (e2) { /* */ }
            }
        }
    }

    /**
     * 依赖进包：不在任何 Bundle 的资源 → 优先级数字最大的引用方。
     */
    function applyRefPacking(cc, bi, rows) {
        var depUtil = cc.assetManager && cc.assetManager.dependUtil;
        var byUuid = {};
        for (var i = 0; i < rows.length; i++) byUuid[rows[i].uuid] = rows[i];

        var explicit = {};
        for (var k in bi.uuidMap) {
            if (Object.prototype.hasOwnProperty.call(bi.uuidMap, k)) explicit[k] = bi.uuidMap[k];
        }

        var prio = {};
        for (var p = 0; p < bi.list.length; p++) {
            prio[bi.list[p].name] = bi.list[p].priority || 0;
        }

        // 引用根：各包内显式归属的资源
        var rootsByBundle = {};
        for (var r = 0; r < rows.length; r++) {
            var row = rows[r];
            var bb = explicit[row.uuid];
            if (!bb) continue;
            if (!rootsByBundle[bb]) rootsByBundle[bb] = [];
            rootsByBundle[bb].push(row.uuid);
        }

        var getDeps = function (uuid) {
            if (!depUtil) return [];
            try {
                if (depUtil.getDependsRecursively) return depUtil.getDependsRecursively(uuid) || [];
            } catch (e) { /* */ }
            try {
                if (depUtil.getDeps) return depUtil.getDeps(uuid) || [];
            } catch (e2) { /* */ }
            return [];
        };

        var refBy = {};
        var addRef = function (uuid, bname) {
            if (!uuid || !bname) return;
            if (!refBy[uuid]) refBy[uuid] = [];
            if (refBy[uuid].indexOf(bname) < 0) refBy[uuid].push(bname);
        };

        for (var bn in rootsByBundle) {
            if (!Object.prototype.hasOwnProperty.call(rootsByBundle, bn)) continue;
            var roots = rootsByBundle[bn];
            for (var i2 = 0; i2 < roots.length; i2++) {
                var deps = getDeps(roots[i2]);
                addRef(roots[i2], bn);
                for (var d = 0; d < deps.length; d++) addRef(String(deps[d]), bn);
            }
        }

        for (var j = 0; j < rows.length; j++) {
            var row2 = rows[j];
            var u2 = row2.uuid;

            // 已显式归属
            if (explicit[u2]) {
                row2.bundle = explicit[u2];
                row2.via = 'direct';
                row2.usedBy = refBy[u2] ? refBy[u2].slice() : [explicit[u2]];
                continue;
            }

            var refs = refBy[u2] || [];
            if (!refs.length) {
                row2.bundle = 'internal';
                row2.via = 'direct';
                row2.usedBy = ['internal'];
                continue;
            }

            // 优先级数字最大的引用方
            var best = refs[0];
            for (var n = 1; n < refs.length; n++) {
                var prBest = prio[best] || 0;
                var prCur = prio[refs[n]] || 0;
                if (prCur > prBest) best = refs[n];
            }
            row2.bundle = best;
            row2.via = 'dep';
            row2.usedBy = refs.slice();
        }
    }

    function collectAssets() {
        var cc = global.cc;
        if (!cc || !cc.assetManager || !cc.assetManager.assets) {
            return { bundles: [], rows: [], totals: gfxTotals() };
        }

        var bi = buildIndex(cc);
        var rows = [];
        var seenTex = {};

        cc.assetManager.assets.forEach(function (asset, uuid) {
            if (!asset) return;
            var id = String(uuid || asset._uuid || '');
            var type = fmtType(asset);
            var mem = assetMem(asset, type, seenTex);
            var bname = bi.uuidMap[id] || bundleFromUrl(asset.nativeUrl || asset._nativeUrl) || '';

            var kind = 'other';
            if (type === 'Texture2D' || type === 'Texture') kind = 'tex';
            else if (type === 'AudioClip' || /Audio/.test(type)) kind = 'audio';

            var w = 0;
            var h = 0;
            if (type === 'SpriteFrame') {
                var sz = frameSize(asset);
                w = sz.w;
                h = sz.h;
            } else {
                w = asset.width | 0;
                h = asset.height | 0;
            }

            var display = asset.name || '';
            var pathStr = bi.pathMap[id] || '';
            if (!display || /^[0-9a-f-]{8,}$/i.test(display)) {
                if (pathStr) {
                    var segs = String(pathStr).split('/');
                    display = segs[segs.length - 1] || pathStr;
                }
                if (!display) display = id.slice(0, 8) + '…';
            }

            rows.push({
                uuid: id,
                name: display,
                type: type,
                bundle: bname,
                mem: mem,
                ref: asset.refCount != null ? asset.refCount : 0,
                w: w,
                h: h,
                kind: kind,
                pack: bi.packOf[id] || '',
                texUuid: type === 'SpriteFrame' ? '' : id,
                path: pathStr,
                via: bname ? 'direct' : 'direct',
            });
        });

        // 补归属 + 依赖进包
        refineOwnership(cc, bi, rows);
        applyRefPacking(cc, bi, rows);

        // 汇总 bundle
        var byName = {};
        for (var i = 0; i < bi.list.length; i++) {
            byName[bi.list[i].name] = bi.list[i];
        }
        for (var z = 0; z < bi.list.length; z++) {
            bi.list[z].assetCount = 0;
            bi.list[z].memMB = 0;
            bi.list[z].texMB = 0;
            bi.list[z].audioMB = 0;
            bi.list[z].otherMB = 0;
        }
        for (var r = 0; r < rows.length; r++) {
            var row = rows[r];
            var agg = byName[row.bundle];
            if (!agg) {
                agg = {
                    name: row.bundle || 'internal',
                    assetCount: 0,
                    memMB: 0,
                    texMB: 0,
                    audioMB: 0,
                    otherMB: 0,
                    status: 'loaded',
                    priority: 0,
                };
                byName[agg.name] = agg;
                bi.list.push(agg);
            }
            agg.assetCount += 1;
            agg.memMB += row.mem;
            if (row.kind === 'tex') agg.texMB += row.mem;
            else if (row.kind === 'audio') agg.audioMB += row.mem;
            else agg.otherMB += row.mem;
        }
        for (var y = 0; y < bi.list.length; y++) {
            if (bi.list[y].assetCount === 0) bi.list[y].status = 'loaded-empty';
        }
        bi.list.sort(function (a, b) {
            return (b.memMB - a.memMB) || (b.assetCount - a.assetCount);
        });

        var totals = gfxTotals();
        totals.estimateMB = 0;
        totals.texMB = 0;
        totals.audioMB = 0;
        totals.otherMB = 0;
        for (var t = 0; t < rows.length; t++) {
            totals.estimateMB += rows[t].mem;
            if (rows[t].kind === 'tex') totals.texMB += rows[t].mem;
            else if (rows[t].kind === 'audio') totals.audioMB += rows[t].mem;
            else totals.otherMB += rows[t].mem;
        }
        totals.assetCount = rows.length;
        totals.bundleCount = bi.list.length;
        return {
            bundles: bi.list,
            rows: rows,
            totals: totals,
            packs: bi.packMembers,
            packOf: bi.packOf,
        };
    }

    /** 更稳的位图预览：HTMLImage / ImageBitmap / ImageData / nativeUrl */
    function imageFromAsset(asset, type) {
        if (type === 'SpriteFrame') {
            var tex = asset.texture || (asset.getTexture && asset.getTexture());
            return {
                img: (tex && tex.image) || (tex && tex._image) || null,
                rect: asset.rect || asset._rect || null,
                nativeUrl: (tex && tex.image && tex.image.nativeUrl) || (tex && tex.nativeUrl) || asset.nativeUrl || '',
            };
        }
        if (type === 'ImageAsset') {
            return { img: asset, rect: null, nativeUrl: asset.nativeUrl || '' };
        }
        var im = asset.image || asset._image || null;
        return {
            img: im,
            rect: null,
            nativeUrl: (im && im.nativeUrl) || asset.nativeUrl || asset._nativeUrl || '',
        };
    }

    function buildPreview(asset, type) {
        try {
            var pack = imageFromAsset(asset, type);
            var img = pack.img;
            var data = img && (img._data || img.data);
            var rect = pack.rect;

            // HTMLImageElement
            if (data && typeof HTMLImageElement !== 'undefined' && data instanceof HTMLImageElement) {
                if (rect && type === 'SpriteFrame') {
                    var ih = data.height || img.height || 0;
                    var sw = Math.max(1, rect.width | 0);
                    var sh = Math.max(1, rect.height | 0);
                    var cv = document.createElement('canvas');
                    cv.width = sw;
                    cv.height = sh;
                    cv.getContext('2d').drawImage(
                        data,
                        rect.x | 0,
                        Math.max(0, ih - (rect.y | 0) - sh) | 0,
                        sw, sh, 0, 0, sw, sh
                    );
                    return { kind: 'image', w: sw, h: sh, url: cv.toDataURL('image/png') };
                }
                return { kind: 'image', w: data.width, h: data.height, url: data.src || '' };
            }

            // ImageBitmap：画到 canvas
            if (data && typeof ImageBitmap !== 'undefined' && data instanceof ImageBitmap) {
                var c2 = document.createElement('canvas');
                c2.width = data.width;
                c2.height = data.height;
                c2.getContext('2d').drawImage(data, 0, 0);
                return { kind: 'image', w: data.width, h: data.height, url: c2.toDataURL('image/png') };
            }

            // ImageData
            if (data && data.data && data.width && typeof ImageData !== 'undefined') {
                var c3 = document.createElement('canvas');
                c3.width = data.width;
                c3.height = data.height;
                c3.getContext('2d').putImageData(new ImageData(data.data, data.width, data.height), 0, 0);
                return { kind: 'image', w: data.width, h: data.height, url: c3.toDataURL('image/png') };
            }

            // TypedArray / ArrayBuffer 位图
            if (data && data.buffer && data.width && data.height && typeof Uint8Array !== 'undefined') {
                var c4 = document.createElement('canvas');
                c4.width = data.width;
                c4.height = data.height;
                var ctx4 = c4.getContext('2d');
                try {
                    ctx4.putImageData(new ImageData(new Uint8ClampedArray(data.buffer, data.byteOffset || 0, data.width * data.height * 4), data.width, data.height), 0, 0);
                    return { kind: 'image', w: data.width, h: data.height, url: c4.toDataURL('image/png') };
                } catch (e1) { /* */ }
            }

            // nativeUrl
            if (pack.nativeUrl) {
                return {
                    kind: 'url',
                    url: pack.nativeUrl,
                    w: (img && img.width) || asset.width || 0,
                    h: (img && img.height) || asset.height || 0,
                };
            }
            if (asset.nativeUrl) {
                return { kind: 'url', url: asset.nativeUrl, w: asset.width | 0, h: asset.height | 0 };
            }
        } catch (e) { /* */ }
        return { kind: 'none' };
    }

    /** 反向引用：谁依赖了 uuid（资源/节点名） */
    function reverseRefs(uuid, cc) {
        var deps = [];
        var depUtil = cc && cc.assetManager && cc.assetManager.dependUtil;
        var assets = cc && cc.assetManager && cc.assetManager.assets;
        if (!assets || !assets.forEach) return deps;
        try {
            assets.forEach(function (asset, id) {
                if (!id || String(id) === String(uuid)) return;
                var list = null;
                try {
                    if (depUtil && depUtil.getDeps) list = depUtil.getDeps(id);
                } catch (e) { list = null; }
                if (!list || !list.length) return;
                for (var i = 0; i < list.length; i++) {
                    if (String(list[i]) === String(uuid)) {
                        deps.push({
                            uuid: String(id),
                            name: asset && asset.name ? asset.name : String(id),
                            type: fmtType(asset),
                        });
                        break;
                    }
                }
            });
        } catch (e2) { /* */ }
        // 场景节点名：遍历当前场景找引用（spriteFrame/texture 等）
        try {
            if (cc.director && cc.director.getScene && cc.UITransform) {
                var scene = cc.director.getScene();
                var walkN = function (node) {
                    if (!node) return;
                    var comps = node.components || [];
                    for (var c = 0; c < comps.length; c++) {
                        var comp = comps[c];
                        if (!comp) continue;
                        var vals = ['spriteFrame', 'texture', 'spriteAtlas', 'skeletonData', 'clip', 'audioClip'];
                        for (var v = 0; v < vals.length; v++) {
                            var a = comp[vals[v]];
                            var au = a && (a._uuid || a.uuid);
                            if (au && String(au) === String(uuid)) {
                                deps.push({
                                    uuid: node.uuid || '',
                                    name: (node.name || '?') + ' / ' + (comp.constructor && comp.constructor.name || ''),
                                    type: 'Node',
                                });
                                break;
                            }
                        }
                    }
                    var ch = node.children || [];
                    for (var k = 0; k < ch.length; k++) walkN(ch[k]);
                };
                walkN(scene);
            }
        } catch (e3) { /* */ }
        return deps.slice(0, 40);
    }

    /** 详情：预览 + 路径 + 反向引用 */
    function assetDetail(uuid) {
        var cc = global.cc;
        var asset = null;
        try {
            asset = cc.assetManager.assets.get(uuid);
        } catch (e) { /* */ }
        if (!asset) {
            return { kind: 'none', name: '', bundle: '', path: '', uuid: uuid, ref: 0, usedBy: [], refs: [] };
        }
        var type = fmtType(asset);
        var preview = buildPreview(asset, type);
        var path = '';
        try {
            cc.assetManager.bundles.forEach(function (bundle) {
                if (path) return;
                if (typeof bundle.getAssetInfo === 'function') {
                    var inf = bundle.getAssetInfo(uuid);
                    if (inf && inf.path) path = inf.path;
                }
            });
        } catch (e2) { /* */ }
        var bundleName = '';
        try {
            cc.assetManager.bundles.forEach(function (bundle, name) {
                if (bundleName) return;
                if (bundle && bundle.cache && bundle.cache.has && bundle.cache.has(uuid)) {
                    bundleName = name || bundle.name || '';
                }
            });
        } catch (e3) { /* */ }
        return {
            kind: preview.kind,
            url: preview.url || '',
            w: preview.w || 0,
            h: preview.h || 0,
            name: asset.name || uuid,
            type: type,
            bundle: bundleName,
            path: path,
            uuid: uuid,
            ref: asset.refCount != null ? asset.refCount : 0,
            refs: reverseRefs(uuid, cc),
        };
    }

    function previewAsset(uuid) {
        var d = assetDetail(uuid);
        return {
            kind: d.kind,
            url: d.url,
            w: d.w,
            h: d.h,
        };
    }

    if (global.PWAgent) {
        global.PWAgent.prototype._listAssets = function () {
            return collectAssets();
        };
        global.PWAgent.prototype._listAssetsAsync = function (done) {
            try {
                done(collectAssets());
            } catch (e) {
                console.warn('[assets]', e);
                done({ bundles: [], rows: [], totals: gfxTotals() });
            }
        };
        global.PWAgent.prototype._previewAsset = function (uuid) {
            return assetDetail(uuid);
        };
    }

    global.PWAssetsUtil = {
        collectAssets: collectAssets,
        previewAsset: previewAsset,
        assetDetail: assetDetail,
        buildPreview: buildPreview,
    };
})(window);