package server

import (
	"fmt"
	"github.com/Xhofe/alist/conf"
	"github.com/Xhofe/alist/model"
	"github.com/Xhofe/alist/utils"
	"github.com/gin-gonic/gin"
	log "github.com/sirupsen/logrus"
	"gorm.io/gorm"
)

func Auth(c *gin.Context) {
	token := c.GetHeader("Authorization")
	password, err := model.GetSettingByKey("password")
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			ErrorResp(c, fmt.Errorf("password not set"), 400)
			return
		}
		ErrorResp(c, err, 500)
		return
	}
	if token != utils.GetMD5Encode(password.Value) {
		ErrorResp(c, fmt.Errorf("wrong password"), 401)
		return
	}
	c.Next()
}

func Login(c *gin.Context) {
	SuccessResp(c)
}

func CheckAccount(c *gin.Context) {
	if model.AccountsCount() == 0 {
		ErrorResp(c, fmt.Errorf("no accounts,please add one first"), 1001)
		return
	}
	c.Next()
}

func CheckParent(path string, password string) bool {
	meta, err := model.GetMetaByPath(path)
	if err == nil {
		if meta.Password != "" && meta.Password != password {
			return false
		}
		return true
	} else {
		if path == "/" {
			return true
		}
		return CheckParent(utils.Dir(path), password)
	}
}

func CheckDownLink(path string, passwordMd5 string, name string) bool {
	if !conf.CheckDown {
		return true
	}
	meta, err := model.GetMetaByPath(path)
	log.Debugf("check down path: %s", path)
	if err == nil {
		log.Debugf("check down link: %s,%s", meta.Password, passwordMd5)
		if meta.Password != "" && utils.Get16MD5Encode("alist"+meta.Password+name) != passwordMd5 {
			return false
		}
		return true
	} else {
		if !conf.CheckParent {
			return true
		}
		if path == "/" {
			return true
		}
		return CheckDownLink(utils.Dir(path), passwordMd5, name)
	}
}