import {i18n} from '@/locale'
const baseUrl = import.meta.env.VITE_SERVER_BASEURL

const UPLOAD_ENDPOINT = '/resource/oss/upload'
const CLIENT_ID = 'e5cd7e4891bf95d1d19206ce24a7b32e'


function parseUploadResponse(data: any): string {
    const parsed = typeof data === 'string' ? JSON.parse(data || '{}') : (data || {})
    if (parsed.code && parsed.code !== 200) {
        throw new Error(parsed.msg || 'upload failed')
    }
    return parsed?.data?.url || parsed?.data || parsed?.url || ''
}

// === 图片压缩函数 ===
function compressImageIfNeeded(filePath: string, size: number): Promise<string> {
    return new Promise((resolve, reject) => {
        // #ifdef APP-PLUS
        if (size > 3 * 1024 * 1024) {
            uni.compressImage({
                src: filePath,
                quality: 70,
                success: res => {
                    uni.getFileInfo({
                        filePath: res.tempFilePath,
                        success: info => resolve(res.tempFilePath),
                        fail: () => resolve(res.tempFilePath),
                    })
                },
                fail: err => reject(err),
            })
        } else {
            resolve(filePath)
        }
        // #endif

        // #ifdef H5
        if (size > 3 * 1024 * 1024) {
            const img = new Image()
            img.crossOrigin = 'Anonymous'
            img.onload = function () {
                const canvas = document.createElement('canvas')
                canvas.width = img.width
                canvas.height = img.height
                const ctx = canvas.getContext('2d')
                ctx?.drawImage(img, 0, 0, img.width, img.height)
                canvas.toBlob(
                    blob => {
                        if (blob) {
                            const url = URL.createObjectURL(blob)
                            resolve(url)
                        } else {
                            reject(new Error('图片压缩失败'))
                        }
                    },
                    'image/jpeg',
                    0.7
                )
            }
            img.onerror = () => reject(new Error('图片加载失败'))
            img.src = filePath
        } else {
            resolve(filePath)
        }
        // #endif

        // #ifndef APP-PLUS || H5
        resolve(filePath)
        // #endif
    })
}

// 上传文件到后端接口
const uploadToS3 = async function (filePath: string, suffix = '.jpg', dir = 'cheflink/'): Promise<string> {
    if (!filePath) {
        uni.showToast({icon: 'none', title: i18n.global.t('common.prompt.picture-wrong-please-try-again')})
        return Promise.reject(new Error('filePath is empty'))
    }

    // 获取文件信息
    let fileInfo: UniApp.GetFileInfoSuccessCallbackResult
    try {
        fileInfo = await new Promise((resolve, reject) => {
            uni.getFileInfo({
                filePath,
                success: resolve,
                fail: reject,
            })
        })
    } catch (err) {
        uni.showToast({icon: 'none', title: i18n.global.t('common.prompt.request-incorrect')})
        return Promise.reject(err)
    }

    // 压缩图片（如果大于 3MB）
    let uploadPath: string
    try {
        uploadPath = await compressImageIfNeeded(filePath, fileInfo.size)
    } catch (err) {
        uni.showToast({icon: 'none', title: i18n.global.t('common.prompt.request-incorrect')})
        return Promise.reject(err)
    }

    return new Promise((resolve, reject) => {
        uni.uploadFile({
            url:baseUrl+ UPLOAD_ENDPOINT,
            filePath: uploadPath,
            name: 'file',
            header: {
                clientid: CLIENT_ID,
            },
            formData: {},
            success: res => {
                if (res.statusCode !== 200) {
                    uni.showToast({icon: 'none', title: i18n.global.t('common.prompt.up-failed')})
                    reject(new Error(`上传失败，状态码: ${res.statusCode}`))
                    return
                }
                try {
                    const uploadedUrl = parseUploadResponse(res.data)
                    if (!uploadedUrl) {
                        uni.showToast({icon: 'none', title: i18n.global.t('common.prompt.up-failed')})
                        reject(new Error('上传失败，返回地址为空'))
                        return
                    }
                    uni.showToast({icon: 'none', title: i18n.global.t('common.operation-success')})
                    resolve(uploadedUrl)
                } catch (error) {
                    uni.showToast({icon: 'none', title: i18n.global.t('common.prompt.up-failed')})
                    reject(error)
                }
            },
            fail: err => {
                uni.showToast({
                    icon: 'none',
                    title: i18n.global.t('common.prompt.request-failed-please-try-again-later')
                })
                reject(err)
            }
        })
    })
}

export {uploadToS3}