package model

import (
	"math/rand"
	"time"
)

type (
    Account struct {
        ID          string  `json:"id" db:"id"`
        Username    string  `json:"username" db:"username"`
        Password    []byte  `json:"password" db:"password"`
        Email       string  `json:"email" db:"email"`
        AvatarURL   string  `json:"avatar_url" db:"avatar_url"`
        Privileges  []AccountPrivilege  `json:"privileges"`
    }

    AccountPrivilege string

    Invite struct {
        Code        string      `db:"code"`
        CreatedByID string      `db:"created_by"`
        CreatedAt   time.Time   `db:"created_at"`
        ExpiresAt   time.Time   `db:"expires_at"`
    }
)

const (
    Root AccountPrivilege = "root" // grants all permissions. very dangerous to grant!

    // unused for now
    CreateInvites AccountPrivilege = "create_invites"
    ReadAccounts AccountPrivilege = "read_accounts"
    EditAccounts AccountPrivilege = "edit_accounts"

    ReadReleases AccountPrivilege = "read_releases"
    EditReleases AccountPrivilege = "edit_releases"

    ReadTracks AccountPrivilege = "read_tracks"
    EditTracks AccountPrivilege = "edit_tracks"

    ReadArtists AccountPrivilege = "read_artists"
    EditArtists AccountPrivilege = "edit_artists"
)

var inviteChars = []byte("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")

func GenerateInviteCode(length int) []byte {
    code := []byte{}
    for i := 0; i < length; i++ {
        code = append(code, inviteChars[rand.Intn(len(inviteChars) - 1)])
    }
    return code
}