NGnius
/
lion-turtle
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Add board syncing from Workshop

master
NGnius (Graham) 4 years ago
parent
e1e97bf405
commit
59b9afb7d3
6 changed files with 746 additions and 1 deletions
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  1. +4
    -1
      .gitignore
  2. +8
    -0
      leadercraft-shopper/go.mod
  3. +4
    -0
      leadercraft-shopper/go.sum
  4. +142
    -0
      leadercraft-shopper/main.go
  5. +270
    -0
      leadercraft-shopper/sql_service.go
  6. +318
    -0
      leadercraft-shopper/sql_structs.go

+ 4
- 1
.gitignore View File

@@ -14,4 +14,7 @@

# Dependency directories (remove the comment below to include it)
vendor/
**/leadercraft-ranker
# binaries
leadercraft-ranker/leadercraft-ranker
leadercraft-shopper/leadercraft-shopper
leadercraft-shopper/criterias/*.json

+ 8
- 0
leadercraft-shopper/go.mod View File

@@ -0,0 +1,8 @@
module git.exmods.org/NGnius/lion-turtle/leadercraft-shopper

go 1.13

require (
github.com/lib/pq v1.3.0
github.com/mattn/go-sqlite3 v2.0.3+incompatible
)

+ 4
- 0
leadercraft-shopper/go.sum View File

@@ -0,0 +1,4 @@
github.com/lib/pq v1.3.0 h1:/qkRGz8zljWiDcFvgpwUpwIAPu3r07TDvs3Rws+o/pU=
github.com/lib/pq v1.3.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
github.com/mattn/go-sqlite3 v2.0.3+incompatible h1:gXHsfypPkaMZrKbD5209QV9jbUTJKjyR5WD3HYQSd+U=
github.com/mattn/go-sqlite3 v2.0.3+incompatible/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=

+ 142
- 0
leadercraft-shopper/main.go View File

@@ -0,0 +1,142 @@
// NGnius 2020-01-30

package main // leadercraft-server

import (
"flag"
"fmt"
"net/http"
"os"
"os/signal"
"encoding/json"
"strconv"
)

const (
// Version the current version
Version = "0.1"
// Name the program name
Name = "leadercraft-shopper"
)

var (
isClosing bool
printVersionAndExit bool
)

type Criteria struct {
Location [][]float64
GameID int64
Coefficient int64
ScoreMode string
}

func defaultCriteria() Criteria {
return Criteria {
Location: [][]float64 {[]float64{-10000,-10000, -10000}, []float64{10000,10000,10000}},
GameID: 0,
Coefficient: 1_000_000_000,
ScoreMode: "time",
}
}

func init() {
initArgs()
}

func main() {
parseArgs()
sqlInitErr := sqlInit()
if sqlInitErr != nil {
fmt.Printf("Failed to initialise SQL connection: %s\n", sqlInitErr)
os.Exit(1)
}
// handle interrupt (terminate) signal
signalChan := make(chan os.Signal)
signal.Notify(signalChan, os.Interrupt)
go func() {
s := <-signalChan
fmt.Println("Received terminate signal " + s.String())
isClosing = true
sqlClose()
}()
// get popular games
for page := 1; page < 10; page++ {
url := fmt.Sprintf("https://api.steampowered.com/IPublishedFileService/QueryFiles/v1/?key=%s&page=%d&numperpage=%d&appid=%d&requiredtags=%s&return_short_description=true", os.Getenv("STEAM_TOKEN"), page, 100, 1078000, "[\"featured\",\"game\"]")
resp, err := http.Get(url)
if err != nil {
fmt.Println(err)
return
}
if resp.StatusCode != 200 {
fmt.Println(resp.Status)
return
}
gamesJSON := make(map[string]interface{})
decoder := json.NewDecoder(resp.Body)
decErr := decoder.Decode(&gamesJSON)
if decErr != nil {
fmt.Println(decErr)
return
}
resp.Body.Close()
games := gamesJSON["response"].(map[string]interface{})["publishedfiledetails"].([]interface{})
//fmt.Println(len(games))
//fmt.Println(gamesJSON["response"].(map[string]interface{})["total"].(float64))
folderErr := os.MkdirAll("criterias/", os.ModeDir | os.ModePerm)
if folderErr != nil {
fmt.Println(folderErr)
}
for _, genGame := range games {
game := genGame.(map[string]interface{})
id, _ := strconv.Atoi(game["publishedfileid"].(string))
id64 := int64(id)
title := game["title"].(string)
desc := game["short_description"].(string)
//fmt.Printf("Game ID:%d title:'%s' desc:'%s'\n", id, title, desc)
gameBoard := LoadBoard(id64)
if gameBoard == nil {
// create new board
gameBoard = &Board{
ID: id64,
Name: title,
Description: desc,
}
gameBoard.Commit()
// create new criteria
crit := defaultCriteria()
crit.GameID = id64
file, createErr := os.Create(fmt.Sprintf("criterias/criteria-%d.json", id64))
if createErr != nil {
fmt.Println(createErr)
} else {
encoder := json.NewEncoder(file)
encoder.Encode(&crit)
file.Close()
}
fmt.Printf("Created new Board ID:%d Name:'%s'\n", id, title)
} else if id64 > 2 {
fmt.Printf("Found existing Board ID:%d Name:'%s'\n", id, gameBoard.Name)
if gameBoard.Name != title || gameBoard.Description != desc {
gameBoard.Name = title
gameBoard.Description = desc
}
gameBoard.Commit()
}
}
}
}

func initArgs() {
flag.BoolVar(&printVersionAndExit, "version", false, "Print version and exit")
flag.StringVar(&sqlConnection, "conn", sqlConnectionDefault, "Database connection string")
flag.StringVar(&sqlServer, "sql", sqlServerDefault, "SQL Database type")
}

func parseArgs() {
flag.Parse()
if printVersionAndExit {
fmt.Println(Name + " v" + Version)
os.Exit(0)
}
}

+ 270
- 0
leadercraft-shopper/sql_service.go View File

@@ -0,0 +1,270 @@
// NGnius 2020-02-11

package main

import (
"database/sql"
"fmt"
"time"

_ "github.com/lib/pq" // postgres
_ "github.com/mattn/go-sqlite3" // sqlite
)

const (
sqlServerDefault = "sqlite3"
sqlConnectionDefault = "test.sqlite"
)

var (
// command line arguments
sqlServer string
sqlConnection string
buildTables bool
populateTables bool
autocreate bool
// internal variables
db *sql.DB
queryType int
queryStrings [][]string
)

func sqlInit() error {
var dbOpenErr error
if sqlServer == "postgres" {
queryType = 1
} else { // sqlite3
queryType = 0
}
queryStrings = [][]string{
[]string{ // sqlite
"SELECT * FROM Boards WHERE name=? LIMIT 1;",
"SELECT * FROM Players WHERE name=? LIMTI 1;",
"INSERT INTO Entries(score, player, board, time) VALUES (?, ?, ?, ?);",
"INSERT INTO Keys(token, player, time) VALUES (?, ?, ?);",
"SELECT * FROM Keys WHERE token=? AND player=? AND time=?",
"SELECT * FROM Keys WHERE token=? LIMIT 1;",
"SELECT * FROM Keys WHERE player=? LIMIT 1;",
"SELECT * FROM Boards WHERE id=?",
"INSERT OR REPLACE INTO Boards(id, name, description) VALUES (?, ?, ?);",
"SELECT * FROM Entries WHERE board=?",
"SELECT * FROM Entries WHERE board=? and rank >= ? and rank <= ? ORDER BY rank ASC;",
"SELECT * FROM Players WHERE id=? LIMIT 1;",
"INSERT OR REPLACE INTO Players(id, name) VALUES (?, ?);",
"SELECT * FROM Entries WHERE player=?",
"SELECT * FROM Entries WHERE player=? ORDER BY time DESC LIMIT ?;",
"SELECT * FROM Entries WHERE id=? LIMIT 1;",
"INSERT OR REPLACE INTO Entries(id, rank, score, player, board, time, metadata) VALUES (?, ?, ?, ?, ?, ?, ?);",
"SELECT * FROM Keys WHERE id=? LIMIT 1;",
"INSERT OR REPLACE INTO Keys(id, token, player, time, metadata) VALUES (?, ?, ?, ?, ?);",
"CREATE TABLE IF NOT EXISTS Players (id INTEGER PRIMARY KEY, name TEXT NOT NULL);",
"CREATE TABLE IF NOT EXISTS Boards (id INTEGER PRIMARY KEY, name TEXT NOT NULL, description TEXT NOT NULL);",
"CREATE TABLE IF NOT EXISTS Entries (id INTEGER PRIMARY KEY, rank INTEGER NOT NULL DEFAULT -1, score INTEGER NOT NULL, player INTEGER NOT NULL, board INTEGER NOT NULL, time INTEGER NOT NULL, metadata BLOB NOT NULL DEFAULT x'FF', FOREIGN KEY(player) REFERENCES Players(id), FOREIGN KEY(board) REFERENCES Boards(id));",
"CREATE TABLE IF NOT EXISTS Keys (id INTEGER PRIMARY KEY, token TEXT NOT NULL, player INTEGER NOT NULL, time INTEGER NOT NULL, metadata BLOB NOT NULL DEFAULT x'FF', FOREIGN KEY(player) REFERENCES Players(id));",
},
[]string{ // postgres
"SELECT * FROM Boards WHERE name=$1 LIMIT 1;",
"SELECT * FROM Players WHERE name=$1 LIMTI 1;",
"INSERT INTO Entries(score, player, board, time) VALUES ($1, $2, $3, $4);",
"INSERT INTO Keys(token, player, time) VALUES ($1, $2, $3);",
"SELECT * FROM Keys WHERE token=$1 AND player=$2 AND time=$3",
"SELECT * FROM Keys WHERE token=$1 LIMIT 1;",
"SELECT * FROM Keys WHERE player=$1 LIMIT 1;",
"SELECT * FROM Boards WHERE id=$1",
"INSERT INTO Boards(id, name, description) VALUES ($1, $2, $3) ON CONFLICT(id) DO UPDATE SET name=$2, description=$3;",
"SELECT * FROM Entries WHERE board=$1",
"SELECT * FROM Entries WHERE board=$1 and rank >= $2 and rank <= $3 ORDER BY rank ASC;",
"SELECT * FROM Players WHERE id=$1 LIMIT 1;",
"INSERT INTO Players(id, name) VALUES ($1, $2) ON CONFLICT(id) DO UPDATE SET name=$2;",
"SELECT * FROM Entries WHERE player=$1;",
"SELECT * FROM Entries WHERE player=$1 ORDER BY time DESC LIMIT $2;",
"SELECT * FROM Entries WHERE id=$1 LIMIT 1;",
"INSERT INTO Entries(id, rank, score, player, board, time, metadata) VALUES ($1, $2, $3, $4, $5, $6, $7) ON CONFLICT(id) DO UPDATE SET rank=$2, score=$3, player=$4, board=$5, time=$6, metadata=$7;",
"SELECT * FROM Keys WHERE id=$1 LIMIT 1;",
"INSERT INTO Keys(id, token, player, time, metadata) VALUES ($1, $2, $3, $4, $5) ON CONFLICT(id) DO UPDATE SET token=$2, player=$3, time=$4, metadata=$5;",
"CREATE TABLE IF NOT EXISTS Players (id BIGSERIAL PRIMARY KEY, name TEXT NOT NULL);",
"CREATE TABLE IF NOT EXISTS Boards (id BIGSERIAL PRIMARY KEY, name TEXT NOT NULL, description TEXT NOT NULL);",
"CREATE TABLE IF NOT EXISTS Entries (id BIGSERIAL PRIMARY KEY, rank INTEGER NOT NULL DEFAULT -1, score BIGINT NOT NULL, player BIGSERIAL NOT NULL, board BIGSERIAL NOT NULL, time INTEGER NOT NULL, metadata BYTEA NOT NULL DEFAULT E'\\\\xFF', FOREIGN KEY(player) REFERENCES Players(id), FOREIGN KEY(board) REFERENCES Boards(id));",
"CREATE TABLE IF NOT EXISTS Keys (id BIGSERIAL PRIMARY KEY, token TEXT NOT NULL, player BIGSERIAL NOT NULL, time BIGSERIAL NOT NULL, metadata BYTEA NOT NULL DEFAULT E'\\\\xFF', FOREIGN KEY(player) REFERENCES Players(id));",
},
}
fmt.Printf("SQL Server %s is query type %d\n", sqlServer, queryType)
//fmt.Println(len(queryStrings[queryType]))
db, dbOpenErr = sql.Open(sqlServer, sqlConnection)
if dbOpenErr != nil {
return dbOpenErr
}
if buildTables {
fmt.Println("Building tables in database...")
sqlBuildTables()
}
if populateTables {
fmt.Println("Populating tables in database...")
sqlPopulateTables()
}
return nil
}

func sqlClose() error {
if db != nil {
err := db.Close()
if err != nil {
return err
}
db = nil
}
return nil
}

func boardByName(name string) (*Board, error) {
b := &Board{}
return b, db.QueryRow(queryStrings[queryType][0], name).Scan(b.Intake()...)
}

func playerByName(name string) (*Player, error) {
p := &Player{}
return p, db.QueryRow(queryStrings[queryType][1], name).Scan(p.Intake()...)
}

func newEntrySql(score, player, board int64) error {
tx, _ := db.Begin()
stmt, _ := tx.Prepare(queryStrings[queryType][2])
_, err := stmt.Exec(score, player, board, time.Now().Unix())
if err != nil {
tx.Rollback()
return err
}
tx.Commit()
return nil
}

func newKeySql(player int64, name string) (*Key, error) {
tx, _ := db.Begin()
if autocreate {
sqlPlayer := &Player{ID: player, Name: name}
if (sqlPlayer.Load() != nil) {
playerErr := sqlPlayer.Commit()
if playerErr != nil {
return nil, playerErr
}
}
}
newKey := &Key{Token: "new", Player: player, Time: time.Now().Unix()}
stmt, _ := tx.Prepare(queryStrings[queryType][3])
_, err := stmt.Exec(newKey.Token, newKey.Player, newKey.Time)
if err != nil {
tx.Rollback()
return nil, err
}
tx.Commit()
db.QueryRow(queryStrings[queryType][4], newKey.Token, newKey.Player, newKey.Time).Scan(newKey.Intake()...)
tokenErr := newKey.GenerateToken()
if tokenErr != nil {
return nil, tokenErr
}
newKey.Metadata = []byte{0xFE} // enable key with not extra permissions
return newKey, newKey.Commit()
}

func keyByToken(token string) (*Key, error) {
k := &Key{}
return k, db.QueryRow(queryStrings[queryType][5], token).Scan(k.Intake()...)
}

func keyByPlayer(player int64) (*Key, error) {
k := &Key{}
return k, db.QueryRow(queryStrings[queryType][6], player).Scan(k.Intake()...)
}

// internal operations
func sqlBuildTables() {
transaction, txErr := db.Begin()
if txErr != nil {
return
}
// test table
//transaction.Exec("CREATE TABLE IF NOT EXISTS Test (Sometext VARCHAR, Somenumber);")
//transaction.Exec("INSERT INTO Test (Sometext, Somenumber) VALUES (?,?);", "Hello sqlite", 123)
// build real tables
transaction.Exec(queryStrings[queryType][19])
transaction.Exec(queryStrings[queryType][20])
transaction.Exec(queryStrings[queryType][21])
transaction.Exec(queryStrings[queryType][22])
transaction.Commit()
}

func sqlPopulateTables() {
boards := []*Board{
&Board{ID: 1, Name: "main-test", Description: "Overall best (test data)"},
&Board{ID: 2, Name: "coolest-test", Description: "Coolest score (test data)"},
&Board{ID: 3, Name: "fastest-test", Description: "Fastest time (test data)"},
}
for _, b := range boards {
err := b.Commit()
if err != nil {
fmt.Printf("Error creating board %d: %s\n", b.ID, err)
}
}
players := []*Player{
&Player{ID: 1, Name: "NGnius (test)"},
&Player{ID: 2, Name: "Also NGnius (test)"},
&Player{ID: 3, Name: ".xX||eDgY TeeNaGeR||Xx. (test)"},
&Player{ID: 4, Name: "New username who dis? (test)"},
&Player{ID: 5, Name: "Extremely Ridiculously Long Name to break things (test)"},
&Player{ID: 6, Name: "P|P3 |o|z (test)"},
&Player{ID: 7, Name: "Waldo (test)"},
&Player{ID: 8, Name: "Zettagram.com (test)"},
&Player{ID: 9, Name: "The Doctor (test)"},
&Player{ID: 10, Name: "Marvin the Paranoid Android (test)"},
&Player{ID: 11, Name: "IDK HOW (test)"},
&Player{ID: 12, Name: "If you can read this your API may be wrong (test)"},
&Player{ID: 13, Name: "Unlucky 7 (test)"},
}
for _, p := range players {
err := p.Commit()
if err != nil {
fmt.Printf("Error creating player %d: %s\n", p.ID, err)
}
}
now := time.Now().Unix()
metadata := []byte{0x00, 0x00, 0x00, 0x00}
entries := []*Entry{
&Entry{ID: 1, Rank: 1, Score: 1000, Player: players[0].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 2, Rank: 2, Score: 900, Player: players[1].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 3, Rank: 3, Score: 400, Player: players[2].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 4, Rank: 4, Score: 350, Player: players[3].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 5, Rank: 5, Score: 350, Player: players[4].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 6, Rank: 6, Score: 250, Player: players[5].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 7, Rank: 7, Score: 200, Player: players[6].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 8, Rank: 8, Score: 175, Player: players[7].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 9, Rank: 9, Score: 150, Player: players[8].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 10, Rank: 10, Score: 140, Player: players[9].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 11, Rank: 11, Score: 10, Player: players[10].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 12, Rank: 12, Score: 60, Player: players[11].ID, Board: boards[0].ID, Time: now, Metadata: metadata},
&Entry{ID: 13, Rank: 13, Score: 13, Player: players[12].ID, Board: boards[0].ID, Time: now},
}
for _, e := range entries {
err := e.Commit()
if err != nil {
fmt.Printf("Error creating entry %d: %s\n", e.ID, err)
}
}
metadata = []byte{0x7E}
keys := []*Key{
&Key{ID: 1, Token: "", Player: players[0].ID, Time: now, Metadata: metadata},
&Key{ID: 2, Token: "", Player: players[1].ID, Time: now, Metadata: metadata},
}
for _, k := range keys {
genErr := k.GenerateToken()
if genErr != nil {
fmt.Printf("Error generating token for key %d, %s\n", k.ID, genErr)
}
//fmt.Printf("Key %d token: %s\n", k.ID, k.Token)
err := k.Commit()
if err != nil {
fmt.Printf("Error creating key %d, %s\n", k.ID, err)
}
// bitwise op test
//fmt.Printf("Key &d is superuser:%t, enabled:%t\n", k.ID, k.IsSuperuser(), k.IsEnabled())
}
}

+ 318
- 0
leadercraft-shopper/sql_structs.go View File

@@ -0,0 +1,318 @@
// NGnius 2020-02-12

package main

import (
"crypto/rand"
"crypto/sha512"
"encoding/binary"
"math/big"
"strconv"
// test
//"fmt"
)

var (
randomizeTokens bool
)

type Rower interface {
Intake() []interface{}
Output() []interface{}
}

type Board struct {
ID int64
Name string
Description string
}

func LoadBoard(id int64) *Board {
b := &Board{ID: id}
loadErr := b.Load()
if loadErr != nil {
return nil
}
return b
}

func (b *Board) Load() error {
return db.QueryRow(queryStrings[queryType][7], b.ID).Scan(b.Intake()...)
}

func (b *Board) Commit() error {
tx, _ := db.Begin()
statement, _ := tx.Prepare(queryStrings[queryType][8])
_, err := statement.Exec(b.Output()...)
if err != nil {
tx.Rollback()
return err
}
return tx.Commit()
}

func (b *Board) Entries() ([]*Entry, error) {
var entries []*Entry
rows, err := db.Query(queryStrings[queryType][9], b.ID)
if err != nil {
return entries, err
}
count := 0
for rows.Next() {
entries = append(entries, &Entry{})
scanErr := rows.Scan(entries[count].Intake()...)
if scanErr != nil {
return entries, scanErr
}
count++
}
return entries, nil
}

func (b *Board) SomeEntries(start, end int64) ([]*Entry, error) {
var entries []*Entry
rows, err := db.Query(queryStrings[queryType][10], b.ID, start, end)
if err != nil {
return entries, err
}
count := 0
for rows.Next() {
entries = append(entries, &Entry{})
scanErr := rows.Scan(entries[count].Intake()...)
if scanErr != nil {
return entries, scanErr
}
count++
}
return entries, nil
}

func (b *Board) Url() string {
return "/board?name=" + b.Name
}

// implementation of Rower
func (b *Board) Intake() []interface{} {
return []interface{}{&b.ID, &b.Name, &b.Description}
}

func (b *Board) Output() []interface{} {
return []interface{}{b.ID, b.Name, b.Description}
}

type Player struct {
ID int64
Name string
}

func LoadPlayer(id int64) *Player {
p := &Player{ID: id}
loadErr := p.Load()
if loadErr != nil {
return nil
}
return p
}

func (p *Player) Load() error {
return db.QueryRow(queryStrings[queryType][11], p.ID).Scan(p.Intake()...)
}

func (p *Player) Commit() error {
tx, _ := db.Begin()
statement, _ := tx.Prepare(queryStrings[queryType][12])
_, err := statement.Exec(p.Output()...)
if err != nil {
tx.Rollback()
return err
}
return tx.Commit()
}

func (p *Player) Entries() ([]*Entry, error) {
var entries []*Entry
rows, err := db.Query(queryStrings[queryType][13], p.ID)
if err != nil {
return entries, err
}
count := 0
for rows.Next() {
entries = append(entries, &Entry{})
scanErr := rows.Scan(entries[count].Intake()...)
if scanErr != nil {
return entries, scanErr
}
count++
}
return entries, nil
}

func (p *Player) SomeEntries(limit int64) ([]*Entry, error) {
var entries []*Entry
rows, err := db.Query(queryStrings[queryType][14], p.ID, limit)
if err != nil {
return entries, err
}
count := 0
for rows.Next() {
entries = append(entries, &Entry{})
scanErr := rows.Scan(entries[count].Intake()...)
if scanErr != nil {
return entries, scanErr
}
count++
}
return entries, nil
}

func (p *Player) Url() string {
return "/player?id=" + strconv.Itoa(int(p.ID))
}

// implementation of Rower
func (p *Player) Intake() []interface{} {
return []interface{}{&p.ID, &p.Name}
}

func (p *Player) Output() []interface{} {
return []interface{}{p.ID, p.Name}
}

type Entry struct {
ID int64
Rank int64
Score int64
Player int64
Board int64
Time int64 // Created time (seconds since Unix epoch)
Metadata []byte
}

func LoadEntry(id int64) *Entry {
e := &Entry{ID: id}
loadErr := e.Load()
if loadErr != nil {
return nil
}
return e
}

func (e *Entry) Load() error {
return db.QueryRow(queryStrings[queryType][15], e.ID).Scan(e.Intake()...)
}

func (e *Entry) Commit() error {
tx, _ := db.Begin()
statement, _ := tx.Prepare(queryStrings[queryType][16])
_, err := statement.Exec(e.Output()...)
if err != nil {
tx.Rollback()
return err
}
return tx.Commit()
}

// implementation of Rower
func (e *Entry) Intake() []interface{} {
return []interface{}{&e.ID, &e.Rank, &e.Score, &e.Player, &e.Board, &e.Time, &e.Metadata}
}

func (e *Entry) Output() []interface{} {
return []interface{}{e.ID, e.Rank, e.Score, e.Player, e.Board, e.Time, e.Metadata}
}

type Key struct {
ID int64
Token string
Player int64
Time int64 // Created time (seconds since Unix epoch)
Metadata []byte
}

func LoadKey(id int64) *Key {
k := &Key{ID: id}
loadErr := k.Load()
if loadErr != nil {
return nil
}
return k
}

func (k *Key) Load() error {
return db.QueryRow(queryStrings[queryType][17], k.ID).Scan(k.Intake()...)
}

func (k *Key) Commit() error {
tx, _ := db.Begin()
statement, _ := tx.Prepare(queryStrings[queryType][18])
_, err := statement.Exec(k.Output()...)
if err != nil {
tx.Rollback()
return err
}
return tx.Commit()
}

func (k *Key) IsEnabled() bool {
return (k.Metadata[0] & 0b00000001) == 0
}

func (k *Key) Disable() {
k.Metadata[0] = k.Metadata[0] | 0b00000001
}

func (k *Key) IsSuperuser() bool {
return (k.Metadata[0] & 0b00000100) == 0
}

func (k *Key) Promote() {
k.Metadata[0] = k.Metadata[0] | 0b00000100
}

func (k *Key) IsMultiuser() bool {
return (k.Metadata[0] & 0b00010000) == 0
}

func (k *Key) Develop() {
k.Metadata[0] = k.Metadata[0] | 0b00010000
}

func (k *Key) GenerateToken() error {
buf_int64 := make([]byte, 10) // 8 bytes = 64 bits
input := []byte{}
if randomizeTokens {
max := big.NewInt(2 ^ 16 - 1)
for i := 0; i < 512; i++ {
// generate randomness
num, _ := rand.Int(rand.Reader, max)
input = append(input, num.Bytes()...)
}
}
binary.PutVarint(buf_int64, k.ID)
input = append(input, buf_int64[0:8]...)
binary.PutVarint(buf_int64, k.Player)
input = append(input, buf_int64[0:8]...)
binary.PutVarint(buf_int64, k.Time)
input = append(input, buf_int64[0:8]...)
bToken := sha512.Sum512(input)
//k.Token = string(bToken)
k.Token = ""
for _, b := range bToken {
tmp_b := b & 0b01111111 // Valid 7-bit ASCII values only
for !((tmp_b > 47 && tmp_b < 58) || (tmp_b > 64 && tmp_b < 91) || (tmp_b > 96 && tmp_b < 123)) {
tmp_b = sha512.Sum512([]byte{tmp_b})[1]
tmp_b = tmp_b & 0b01111111
}
k.Token += string(tmp_b)
}
return nil
}

// Implementation of Rower
func (k *Key) Intake() []interface{} {
return []interface{}{&k.ID, &k.Token, &k.Player, &k.Time, &k.Metadata}
}

func (k *Key) Output() []interface{} {
return []interface{}{k.ID, k.Token, k.Player, k.Time, k.Metadata}
}