DBTextures = {}
local db = {}

local dbUploadStatus = {}
local isUploading = {}
local isDownoading = {}
local downloadCallback = {}
local downloadDir = Utl.chgToSDCard(Path.Combine(Application.persistentDataPath, CLPathCfg.self.basePath, "download"))

function DBTextures.init()
    InvokeEx.cancelInvoke(DBTextures.releaseTimeout)
    InvokeEx.invoke(DBTextures.releaseTimeout, 60)
end

function DBTextures.clean()
    InvokeEx.cancelInvoke(DBTextures.releaseTimeout)
    for k, v in ipairs(db) do
        GameObject.DestroyImmediate(v)
    end
    db = {}

    ---@param v UnityEngine.UnityWebRequest
    for k, www in pairs(dbUploadStatus) do
        if www then
            www.Dispose()
            www = nil
        end
    end
    dbUploadStatus = {}
end

function DBTextures.releaseTimeout()
    for k, v in ipairs(db) do
        if DateEx.nowMS - v.lastUseTime > 300000 then
            GameObject.DestroyImmediate(v.texture)
            db[k] = nil
        end
    end
end

---@return UnityEngine.UnityWebRequest
function DBTextures.getByUrl(url, callback, orgs)
    local tt = db[url]
    if tt then
        tt.lastUseTime = DateEx.nowMS
        db[url] = tt
        Utl.doCallback(callback, tt.texture, orgs)
        return nil
    end

    local request =
        WWWEx.get(
        url,
        nil,
        CLAssetType.texture,
        function(content)
            db[url] = {texture = content, lastUseTime = DateEx.nowMS}
            Utl.doCallback(callback, content, orgs)
        end,
        nil,
        orgs,
        true,
        1
    )
    return request
end

function DBTextures.upload(path, uploadPath, finishCallback)
    local key = joinStr(path, "_", uploadPath)
    if (not dbUploadStatus[key]) and (not isUploading[key]) then
        local www =
            NetProto.uploadFile(
            path,
            uploadPath,
            function(result, orgs)
                isUploading[key] = nil
                if result then
                    dbUploadStatus[key] = result
                end
                Utl.doCallback(finishCallback, result)
            end
        )
        isUploading[key] = www
        return www
    else
        if dbUploadStatus[key] then
            Utl.doCallback(finishCallback, dbUploadStatus[key])
        else
            printe("进到这里来了，有问题！！！！！！！")
        end
    end
end

function DBTextures.cancelUpload(path, uploadPath)
    local key = joinStr(path, "_", uploadPath)
    local www = isUploading[key]
    if www then
        www.Dispose()
        www = nil
        dbUploadStatus[key] = nil
        isUploading[key] = nil
    end
end

function DBTextures.hadDownloaded(name)
    local localPath = Path.Combine(downloadDir, name)
    if File.Exists(localPath) then
        return true, localPath
    end
    return false, localPath
end

function DBTextures.download(name, url, callback)
    downloadCallback[name] = callback
    if isDownoading[name] then
        return isDownoading[name]
    end
    local localPath = Path.Combine(downloadDir, name)
    local _url = url
    if File.Exists(localPath) then
        _url = Path.Combine("file://", localPath)
    end
    local www =
        WWWEx.get(
        _url,
        nil,
        CLAssetType.bytes,
        function(content, orgs)
            isDownoading[name] = nil
            if content then
                local bytes = content
                Directory.CreateDirectory(Path.GetDirectoryName(localPath))
                File.WriteAllBytes(localPath, bytes)
                Utl.doCallback(downloadCallback[name], content, localPath)
                downloadCallback[name] = nil
            else
                MyUtl.toastW("下载附件为空")
                Utl.doCallback(downloadCallback[name], content, nil)
                downloadCallback[name] = nil
            end
        end,
        function()
            isDownoading[name] = nil
            MyUtl.toastW("下载附件失败")
            Utl.doCallback(downloadCallback[name], nil, nil)
            downloadCallback[name] = nil
        end,
        nil,
        true,
        2
    )
    isDownoading[name] = www
    return www
end

return DBTextures