package middlewares

import (
	"strings"

	"quyun/v2/app/errorx"
	"quyun/v2/app/services"
	"quyun/v2/pkg/consts"
	"quyun/v2/providers/jwt"

	"github.com/gofiber/fiber/v3"
)

func shouldSkipSuperJWTAuth(path string) bool {
	// 登录接口允许匿名访问。
	return strings.Contains(path, "/super/v1/auth/login")
}

// SuperAuth 平台侧超级管理员鉴权：
// - 校验 JWT 并写入 claims
// - 加载用户并校验包含 super_admin 角色
func (f *Middlewares) SuperAuth(c fiber.Ctx) error {
	if shouldSkipSuperJWTAuth(c.Path()) {
		f.log.Debug("middlewares.super.auth.skipped")
		return c.Next()
	}

	authHeader := c.Get(jwt.HttpHeader)
	if authHeader == "" {
		f.log.Info("middlewares.super.auth.missing_token")
		return errorx.ErrTokenMissing
	}

	claims, err := f.jwt.Parse(authHeader)
	if err != nil {
		f.log.WithError(err).Warn("middlewares.super.auth.invalid_token")
		switch err {
		case jwt.TokenExpired:
			return errorx.ErrTokenExpired
		case jwt.TokenMalformed, jwt.TokenNotValidYet, jwt.TokenInvalid:
			return errorx.ErrTokenInvalid
		default:
			return errorx.ErrTokenInvalid
		}
	}
	if claims.UserID == 0 {
		f.log.Warn("middlewares.super.auth.missing_user_id")
		return errorx.ErrTokenInvalid
	}

	userModel, err := services.User.FindByID(c, claims.UserID)
	if err != nil {
		f.log.WithField("user_id", claims.UserID).WithError(err).Warn("middlewares.super.auth.load_user_failed")
		return err
	}
	if !userModel.Roles.Contains(consts.RoleSuperAdmin) {
		f.log.WithField("user_id", claims.UserID).Warn("middlewares.super.auth.denied")
		return errorx.ErrPermissionDenied.WithMsg("需要超级管理员权限")
	}

	f.log.WithFields(map[string]any{
		"user_id": claims.UserID,
	}).Info("middlewares.super.auth.ok")

	c.Locals(consts.CtxKeyClaims, claims)
	c.Locals(consts.CtxKeyUser, userModel)
	return c.Next()
}