package system

import (
	"path/filepath"
	"strconv"
	"strings"

	"github.com/gin-gonic/gin"
	"go_server/base/config"
	"go_server/global"
	"go_server/model/biz_modules/daytask"
	"go_server/model/common/response"
	"go_server/service/base"
	"go_server/utils"
	"gorm.io/gorm"
)

type FileService struct {
	base.SysCommonService
}

func (s *FileService) UploadFile(c *gin.Context) {
	_, header, err := c.Request.FormFile("file")
	if err != nil {
		response.Resp(c, "接收文件失败")
		return
	}
	path, file, err := config.EnvConf().File.UploadFile(header) // 文件上传后拿到文件路径
	if err != nil {
		response.Resp(c, err.Error())
		return
	}

	// 自动保存到素材库
	groupIdStr := c.PostForm("groupId")
	groupCode := c.PostForm("groupCode") // 分组代码，如 banner, task, notice 等
	autoSave := c.PostForm("autoSave")   // 是否自动保存到素材库，默认true

	// 默认自动保存，除非明确设置为 "false" 或 "0"
	shouldSave := autoSave != "false" && autoSave != "0"

	if shouldSave {
		// 获取daytask数据库连接
		db, dbErr := global.BizDBByAlias("daytask")
		if dbErr == nil && db != nil {
			// 解析文件信息
			filename := header.Filename
			fileSize := header.Size
			mimeType := header.Header.Get("Content-Type")

			// 判断文件类型
			fileType := getFileType(mimeType, filename)

			// 获取groupId
			var groupId int64 = 0
			if groupIdStr != "" {
				groupId, _ = strconv.ParseInt(groupIdStr, 10, 64)
			} else if groupCode != "" {
				// 通过groupCode查找或创建分组
				groupId = getOrCreateGroupByCode(db, groupCode)
			}

			// 获取管理员ID
			adminId := c.GetInt64("userId")

			// 创建素材记录（不包含cover字段）
			material := daytask.DtMaterial{
				Name:     filename,
				Path:     file,
				Url:      path,
				Type:     fileType,
				MimeType: mimeType,
				Size:     fileSize,
				Storage:  "local",
				GroupId:  groupId,
				AdminId:  adminId,
				Status:   1,
			}

			// 保存到数据库，排除cover字段
			db.Omit("cover").Create(&material)
		}
	}

	response.Resp(c, map[string]interface{}{
		"path": path,
		"file": file,
	})
}

// getOrCreateGroupByCode 通过分组代码获取或创建分组
func getOrCreateGroupByCode(db *gorm.DB, code string) int64 {
	// 分组代码与名称的映射
	codeNameMap := map[string]string{
		"banner":  "Banner图片",
		"task":    "任务素材",
		"notice":  "公告素材",
		"help":    "帮助中心",
		"avatar":  "用户头像",
		"default": "默认分组",
	}

	// 查找已存在的分组
	var group daytask.DtMaterialGroup
	result := db.Where("code = ?", code).First(&group)
	if result.Error == nil {
		return group.Id
	}

	// 分组不存在，创建新分组
	groupName := codeNameMap[code]
	if groupName == "" {
		groupName = code // 如果没有映射，直接使用code作为名称
	}

	newGroup := daytask.DtMaterialGroup{
		Name:   groupName,
		Code:   code,
		Status: 1,
	}
	db.Create(&newGroup)
	return newGroup.Id
}

// getFileType 根据MIME类型和文件名判断文件类型
func getFileType(mimeType, filename string) string {
	// 优先根据MIME类型判断
	if strings.HasPrefix(mimeType, "image/") {
		return "image"
	}
	if strings.HasPrefix(mimeType, "video/") {
		return "video"
	}
	if strings.HasPrefix(mimeType, "audio/") {
		return "audio"
	}

	// 根据文件扩展名判断
	ext := strings.ToLower(filepath.Ext(filename))
	switch ext {
	case ".jpg", ".jpeg", ".png", ".gif", ".bmp", ".webp", ".svg", ".ico":
		return "image"
	case ".mp4", ".avi", ".mov", ".wmv", ".flv", ".mkv", ".webm":
		return "video"
	case ".mp3", ".wav", ".ogg", ".flac", ".aac", ".m4a":
		return "audio"
	case ".pdf", ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".txt":
		return "document"
	default:
		return "other"
	}
}

func (s *FileService) DeleteFile(c *gin.Context) {
	filename, ok := c.GetQuery("filename")
	if !ok {
		response.Resp(c, "接收文件失败")
		return
	}
	err := config.EnvConf().File.DeleteFile(filename) // 文件上传后拿到文件路径
	if err != nil {
		response.Resp(c, err.Error())
		return
	}
	response.Resp(c)
}

func (s *FileService) OssAuth(c *gin.Context) {
	resp, err := config.StsAliEngin().AliSTS("fomo-sts")
	if err != nil {
		response.Resp(c, err.Error())
		return
	}
	savePath := utils.ToPath(config.EnvConf().StsOss.BasePath)
	response.Resp(c, map[string]any{
		"region":      config.EnvConf().StsOss.StsRegion,
		"bucket":      config.EnvConf().StsOss.BucketName,
		"bucketUrl":   config.EnvConf().StsOss.BucketUrl,
		"credentials": resp.Body.Credentials,
		"filePath":    savePath,
	})

}