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|
package main
import (
"fmt"
"log"
"net/http"
"os"
"strconv"
"time"
"github.com/jmoiron/sqlx"
_ "github.com/lib/pq"
)
type Config struct {
dbHost string
dbPort string
dbUser string
dbPassword string
dbName string
}
var config *Config
var db *sqlx.DB
func loadEnv() (*Config, error) {
dbHost, exists := os.LookupEnv("ALBATROSS_DB_HOST")
if !exists {
return nil, fmt.Errorf("ALBATROSS_DB_HOST not set")
}
dbPort, exists := os.LookupEnv("ALBATROSS_DB_PORT")
if !exists {
return nil, fmt.Errorf("ALBATROSS_DB_PORT not set")
}
dbUser, exists := os.LookupEnv("ALBATROSS_DB_USER")
if !exists {
return nil, fmt.Errorf("ALBATROSS_DB_USER not set")
}
dbPassword, exists := os.LookupEnv("ALBATROSS_DB_PASSWORD")
if !exists {
return nil, fmt.Errorf("ALBATROSS_DB_PASSWORD not set")
}
dbName, exists := os.LookupEnv("ALBATROSS_DB_NAME")
if !exists {
return nil, fmt.Errorf("ALBATROSS_DB_NAME not set")
}
return &Config{
dbHost: dbHost,
dbPort: dbPort,
dbUser: dbUser,
dbPassword: dbPassword,
dbName: dbName,
}, nil
}
const (
gameTypeGolf = "golf"
gameTypeRace = "race"
)
const (
gameStateWaiting = "waiting"
gameStateReady = "ready"
gameStatePlaying = "playing"
gameStateFinished = "finished"
)
type Game struct {
GameID int `db:"game_id"`
// "golf" or "race"
Type string `db:"type"`
CreatedAt string `db:"created_at"`
State string `db:"state"`
}
func initDB() error {
_, err := db.Exec(`
CREATE TABLE IF NOT EXISTS games (
game_id SERIAL PRIMARY KEY,
type VARCHAR(255) NOT NULL,
created_at TIMESTAMP NOT NULL DEFAULT NOW(),
state VARCHAR(255) NOT NULL
);
`)
return err
}
var gameHubs = map[int]*GameHub{}
func startGame(game *Game) {
if gameHubs[game.GameID] != nil {
return
}
gameHubs[game.GameID] = NewGameHub(game)
go gameHubs[game.GameID].Run()
}
func handleGolfPost(w http.ResponseWriter, r *http.Request) {
var yourTeam string
waitingGolfGames := []Game{}
err := db.Select(&waitingGolfGames, "SELECT * FROM games WHERE type = $1 AND state = $2 ORDER BY created_at", gameTypeGolf, gameStateWaiting)
if err != nil {
http.Error(w, "Error getting games", http.StatusInternalServerError)
return
}
if len(waitingGolfGames) == 0 {
_, err = db.Exec("INSERT INTO games (type, state) VALUES ($1, $2)", gameTypeGolf, gameStateWaiting)
if err != nil {
http.Error(w, "Error creating game", http.StatusInternalServerError)
return
}
waitingGolfGames = []Game{}
err = db.Select(&waitingGolfGames, "SELECT * FROM games WHERE type = $1 AND state = $2 ORDER BY created_at", gameTypeGolf, gameStateWaiting)
if err != nil {
http.Error(w, "Error getting games", http.StatusInternalServerError)
return
}
yourTeam = "a"
startGame(&waitingGolfGames[0])
} else {
yourTeam = "b"
db.Exec("UPDATE games SET state = $1 WHERE game_id = $2", gameStateReady, waitingGolfGames[0].GameID)
}
waitingGame := waitingGolfGames[0]
http.Redirect(w, r, fmt.Sprintf("/golf/%d/%s/", waitingGame.GameID, yourTeam), http.StatusSeeOther)
}
func handleRacePost(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, "/race/1/a/", http.StatusSeeOther)
}
func main() {
var err error
config, err = loadEnv()
if err != nil {
fmt.Printf("Error loading env %v", err)
return
}
for i := 0; i < 5; i++ {
db, err = sqlx.Connect("postgres", fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=disable", config.dbHost, config.dbPort, config.dbUser, config.dbPassword, config.dbName))
if err == nil {
break
}
time.Sleep(5 * time.Second)
}
if err != nil {
log.Fatalf("Error connecting to db %v", err)
}
defer db.Close()
err = initDB()
if err != nil {
log.Fatalf("Error initializing db %v", err)
}
server := http.NewServeMux()
server.HandleFunc("GET /js/", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public"+r.URL.Path)
})
server.HandleFunc("GET /{$}", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public/index.html")
})
server.HandleFunc("GET /golf/{$}", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public/golf/index.html")
})
server.HandleFunc("POST /golf/{$}", func(w http.ResponseWriter, r *http.Request) {
handleGolfPost(w, r)
})
server.HandleFunc("GET /golf/{gameId}/watch/{$}", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public/golf/watch.html")
})
server.HandleFunc("GET /sock/golf/{gameId}/watch/{$}", func(w http.ResponseWriter, r *http.Request) {
gameId := r.PathValue("gameId")
gameIdInt, err := strconv.Atoi(gameId)
if err != nil {
http.Error(w, "Invalid game id", http.StatusBadRequest)
return
}
var hub *GameHub
for _, h := range gameHubs {
if h.game.GameID == gameIdInt {
hub = h
break
}
}
if hub == nil {
http.Error(w, "Game not found", http.StatusNotFound)
return
}
serveWsWatcher(hub, w, r)
})
server.HandleFunc("GET /golf/{gameId}/{team}/{$}", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public/golf/game.html")
})
server.HandleFunc("GET /sock/golf/{gameId}/{team}/{$}", func(w http.ResponseWriter, r *http.Request) {
gameId := r.PathValue("gameId")
gameIdInt, err := strconv.Atoi(gameId)
if err != nil {
http.Error(w, "Invalid game id", http.StatusBadRequest)
return
}
var hub *GameHub
for _, h := range gameHubs {
if h.game.GameID == gameIdInt {
hub = h
break
}
}
if hub == nil {
http.Error(w, "Game not found", http.StatusNotFound)
return
}
team := r.PathValue("team")
serveWs(hub, w, r, team)
})
server.HandleFunc("GET /race/{$}", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public/race/index.html")
})
server.HandleFunc("POST /race/{$}", func(w http.ResponseWriter, r *http.Request) {
handleRacePost(w, r)
})
server.HandleFunc("GET /race/{gameId}/watch/{$}", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public/race/watch.html")
})
server.HandleFunc("GET /sock/race/{gameId}/watch/{$}", func(w http.ResponseWriter, r *http.Request) {
// TODO
})
server.HandleFunc("GET /race/{gameId}/{team}/{$}", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "./public/race/game.html")
})
server.HandleFunc("GET /sock/race/{gameId}/{team}/{$}", func(w http.ResponseWriter, r *http.Request) {
// TODO
})
defer func() {
for _, hub := range gameHubs {
hub.Close()
}
}()
http.ListenAndServe(":80", server)
}
|
