export default defineEventHandler(async event => {

    // 获取任务列表的状态进度(普通用户只能看到自己的)
    if (event.node.req.method === 'GET') {
        let {status, model, uid, bot} = getQuery(event)
        let tasks = await useStorage().getKeys().then((keys: any[]) => keys.filter(key => key.startsWith('task:')))
        tasks = await Promise.all(tasks.map(async (key: any) => await useStorage().getItem(key))) // 读取所有任务的数据
        tasks.sort((a: any, b: any) => a.createdAt - b.createdAt)                    // 按照创建时间排序
        if (tasks.length === 0) return []                                            // 如果没有任务，直接返回空数组
        if (status) tasks = tasks.filter((task: any) => task.status === status)      // 筛选出指定状态的任务
        if (model) tasks = tasks.filter((task: any) => task.model === model)         // 筛选出指定model的任务
        if (uid) tasks = tasks.filter((task: any) => task.uid === uid)               // 筛选出指定用户的任务
        if (bot) {
            tasks = tasks.filter((task: any) => task.model === tasks[0].model)  // 筛选出首位model的任务
            tasks.forEach(async (task: any) => {
                task.status = 'processing'
                await useStorage().setItem(`task:${task.id}`, task)
            })
        }
        return tasks
    }

    // 添加任务到队列(生成一个32位随机字符串作为任务ID)
    if (event.node.req.method === 'POST') {
        const {
            model   = 'SD2',       // 模型
            ckpt    = '768-v-ema', // 风格
            image   = '',          // 图片数据(img2img)
            prompt  = 'cat',       // 提示词
            remove  = 'dog',       // 排除词
            number  = 1,           // 生成数量
            width   = 512,         // 图片宽度
            height  = 512,         // 图片高度
            seed    = 0,           // 随机种子
            sampler = 'pndm',      // 扩散采样器
            prompt_guidance = 0.5, // 提示词权重
            quality_details = 25,  // 质量和细节(步数)
        } = await readBody(event)
        const id         = Math.random().toString(36).substring(2, 34) // 生成随机任务ID
        const uid        = 1234567890                                  // 用户ID
        const createdAt  = new Date().getTime()                        // 设定创建时间
        const status     = 'waiting'                                   // 任务状态
        const progress   = 0.00                                        // 任务进度
        const data:any[] = []                                          // 生成结果
        const task = { model, ckpt, image, prompt, remove, number, width, height, seed, sampler, prompt_guidance, quality_details, id, uid, createdAt, status, progress, data }
        console.log('task:', task)
        await useStorage().setItem(`task:${task.id}`, task)            // 保存任务到内存
        const tasks = await useStorage().getKeys().then((keys: any[]) => keys.filter(key => key.startsWith('task:')))
        console.log('tasks:', tasks)
        return task
    }

})