package shared

import (
	"strings"

	"hyapp-admin-server/internal/model"
)

func UserDTOs(users []model.User) []map[string]interface{} {
	out := make([]map[string]interface{}, 0, len(users))
	for _, user := range users {
		out = append(out, UserDTO(user))
	}
	return out
}

func UserDTO(user model.User) map[string]interface{} {
	roleNames := make([]string, 0, len(user.Roles))
	roleIDs := make([]uint, 0, len(user.Roles))
	for _, role := range user.Roles {
		roleNames = append(roleNames, role.Name)
		roleIDs = append(roleIDs, role.ID)
	}
	role := ""
	if len(roleNames) > 0 {
		role = strings.Join(roleNames, "、")
	}

	lastLogin := "-"
	if user.LastLoginAt != nil {
		lastLogin = user.LastLoginAt.Format("01-02 15:04")
	}

	return map[string]interface{}{
		"id":          user.ID,
		"account":     user.Username,
		"username":    user.Username,
		"name":        user.Name,
		"team":        user.Team,
		"status":      user.Status,
		"mfa":         BoolText(user.MFAEnabled),
		"mfaEnabled":  user.MFAEnabled,
		"lastLogin":   lastLogin,
		"roles":       user.Roles,
		"role":        role,
		"roleIds":     roleIDs,
		"permissions": PermissionsForUser(user),
	}
}

func PermissionsForUser(user model.User) []string {
	set := map[string]struct{}{}
	for _, role := range user.Roles {
		for _, permission := range role.Permissions {
			set[permission.Code] = struct{}{}
		}
	}
	out := make([]string, 0, len(set))
	for code := range set {
		out = append(out, code)
	}
	return out
}