142 lines
3.9 KiB
Go
142 lines
3.9 KiB
Go
package oss
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import (
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"encoding/json"
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"io"
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"log"
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"net/url"
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"strings"
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"soul-api/internal/database"
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"soul-api/internal/model"
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alioss "github.com/aliyun/aliyun-oss-go-sdk/oss"
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)
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// Config 阿里云 OSS 配置，与管理端 ossConfig 字段对应
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type Config struct {
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Endpoint string `json:"endpoint"`
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Bucket string `json:"bucket"`
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Region string `json:"region"`
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AccessKeyID string `json:"accessKeyId"`
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AccessKeySecret string `json:"accessKeySecret"`
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}
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// LoadConfig 从 system_config 读取 oss_config，配置不完整时返回 nil
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func LoadConfig() *Config {
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var row model.SystemConfig
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if err := database.DB().Where("config_key = ?", "oss_config").First(&row).Error; err != nil {
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return nil
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}
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var m map[string]interface{}
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if err := json.Unmarshal(row.ConfigValue, &m); err != nil {
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return nil
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}
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var cfg Config
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if v, ok := m["endpoint"].(string); ok && v != "" {
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cfg.Endpoint = strings.TrimSpace(v)
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}
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if v, ok := m["bucket"].(string); ok && v != "" {
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cfg.Bucket = strings.TrimSpace(v)
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}
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if v, ok := m["accessKeyId"].(string); ok && v != "" {
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cfg.AccessKeyID = v
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}
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if v, ok := m["accessKeySecret"].(string); ok && v != "" {
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cfg.AccessKeySecret = v
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}
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if cfg.Endpoint == "" || cfg.Bucket == "" || cfg.AccessKeyID == "" || cfg.AccessKeySecret == "" {
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return nil
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}
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// endpoint 去掉 scheme，SDK 需要
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cfg.Endpoint = strings.TrimPrefix(strings.TrimPrefix(cfg.Endpoint, "https://"), "http://")
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return &cfg
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}
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// IsEnabled 是否已配置 OSS 且可用
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func IsEnabled() bool {
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return LoadConfig() != nil
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}
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// Upload 上传文件到 OSS，objectKey 如 "uploads/avatars/xxx.jpg"
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// 返回公网访问 URL，如 https://bucket.oss-cn-hangzhou.aliyuncs.com/uploads/avatars/xxx.jpg
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func Upload(objectKey string, reader io.Reader, options ...alioss.Option) (string, error) {
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cfg := LoadConfig()
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if cfg == nil {
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return "", nil // 未配置，调用方需回退本地
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}
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client, err := alioss.New(cfg.Endpoint, cfg.AccessKeyID, cfg.AccessKeySecret)
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if err != nil {
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log.Printf("oss: client init failed: %v", err)
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return "", err
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}
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bucket, err := client.Bucket(cfg.Bucket)
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if err != nil {
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log.Printf("oss: bucket %s failed: %v", cfg.Bucket, err)
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return "", err
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}
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if err := bucket.PutObject(objectKey, reader, options...); err != nil {
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log.Printf("oss: PutObject %s failed: %v", objectKey, err)
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return "", err
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}
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// 公网 URL：https://{bucket}.{endpoint}/{objectKey}
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u := "https://" + cfg.Bucket + "." + cfg.Endpoint + "/" + objectKey
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return u, nil
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}
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// Delete 从 OSS 删除对象，objectKey 如 "uploads/avatars/xxx.jpg"
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func Delete(objectKey string) error {
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cfg := LoadConfig()
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if cfg == nil {
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return nil
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}
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client, err := alioss.New(cfg.Endpoint, cfg.AccessKeyID, cfg.AccessKeySecret)
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if err != nil {
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return err
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}
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bucket, err := client.Bucket(cfg.Bucket)
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if err != nil {
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return err
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}
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return bucket.DeleteObject(objectKey)
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}
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// ParseObjectKeyFromURL 从 OSS 公网 URL 解析出 objectKey
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// 格式: https://bucket.oss-cn-xxx.aliyuncs.com/uploads/avatars/xxx.jpg
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func ParseObjectKeyFromURL(rawURL string) string {
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u, err := url.Parse(rawURL)
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if err != nil {
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return ""
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}
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path := strings.TrimPrefix(u.Path, "/")
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return path
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}
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// IsOSSURL 判断是否为 OSS 公网 URL（用于删除时区分本地/OSS）
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func IsOSSURL(rawURL string) bool {
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cfg := LoadConfig()
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if cfg == nil {
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return false
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}
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// 格式: https://{bucket}.{endpoint}/...
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prefix := "https://" + cfg.Bucket + "." + cfg.Endpoint + "/"
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return strings.HasPrefix(rawURL, prefix)
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}
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// PublicURL 将路径转为 OSS 公网访问 URL，path 如 /uploads/avatars/xxx.jpg
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// OSS 未配置时返回空字符串
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func PublicURL(path string) string {
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cfg := LoadConfig()
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if cfg == nil {
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return ""
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}
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path = strings.TrimSpace(path)
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if path == "" {
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return ""
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}
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if path[0] == '/' {
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path = path[1:]
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}
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return "https://" + cfg.Bucket + "." + cfg.Endpoint + "/" + path
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}
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