/
meeple_mover.go
409 lines (351 loc) · 12.1 KB
/
meeple_mover.go
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package main
import (
"database/sql"
"encoding/json"
"errors"
"fmt"
"log"
"net/http"
"net/url"
"os"
"strconv"
_ "github.com/lib/pq"
"github.com/rcrowley/go-tigertonic"
"github.com/rkbodenner/meeple_mover/record"
"github.com/rkbodenner/parallel_universe/game"
"github.com/rkbodenner/parallel_universe/session"
)
var glog = log.New(os.Stderr, "", log.Ldate | log.Ltime | log.Lshortfile)
var games []*game.Game
var gameIndex = make(map[uint64]*game.Game)
func initGameData(db *sql.DB) error {
gameRecords := &record.GameRecordList{}
err := gameRecords.FindAll(db)
if nil != err {
return err
}
games = gameRecords.List()
for _, game := range games {
gameIndex[(uint64)(game.Id)] = game
}
glog.Printf("Loaded %d games from DB\n", len(games))
return nil
}
var sessions []*session.Session
var sessionIndex = make(map[uint64]*session.Session)
func initSessionData(db *sql.DB) error {
records := &record.SessionRecordList{}
err := records.FindAll(db)
if nil != err {
return err
}
sessions = records.List()
// Update global cache of sessions
for _, s := range sessions {
sessionIndex[(uint64)(s.Id)] = s
}
glog.Printf("Loaded %d sessions from DB\n", len(sessions))
return nil
}
type CollectionHandler struct{}
func (h CollectionHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
err := json.NewEncoder(w).Encode(games)
if ( nil != err ) {
fmt.Fprintln(w, err)
}
}
type GameHandler struct{}
func (h GameHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
id_str := r.URL.Query().Get("id")
id, err := strconv.ParseUint(id_str, 10, 64)
if nil != err {
http.Error(w, "Not found", http.StatusNotFound)
return
}
game, ok := gameIndex[id]
if ok {
err := json.NewEncoder(w).Encode(game)
if ( nil != err ) {
http.Error(w, "Error", http.StatusInternalServerError)
}
} else {
http.Error(w, "Not found", http.StatusNotFound)
}
}
type PlayersHandler struct {
db *sql.DB
}
func (h PlayersHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
playerRecords := &record.PlayerRecordList{}
err := playerRecords.FindAll(h.db)
if nil != err {
http.Error(w, "Error", http.StatusInternalServerError)
return
}
players := playerRecords.List()
err = json.NewEncoder(w).Encode(players)
if ( nil != err ) {
fmt.Fprintln(w, err)
}
}
type PlayerHandler struct {
db *sql.DB
}
func (h PlayerHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
player_id_str := r.URL.Query().Get("player_id")
player_id, err := strconv.ParseUint(player_id_str, 10, 64)
if nil != err {
http.Error(w, "Not found", http.StatusNotFound)
return
}
player := &game.Player{}
playerRecord := &record.PlayerRecord{player}
err = playerRecord.Find(h.db, (int)(player_id))
if nil != err {
http.Error(w, "Player not found", http.StatusNotFound)
return
}
err = json.NewEncoder(w).Encode(player)
if nil != err {
http.Error(w, "Error", http.StatusInternalServerError)
}
}
type PlayerCreateRequest struct {
Player game.Player `json:"player"`
}
type PlayerCreateHandler struct {
db *sql.DB
}
func (handler PlayerCreateHandler) marshalFunc() (func(*url.URL, http.Header, *PlayerCreateRequest) (int, http.Header, *game.Player, error)) {
return func(u *url.URL, h http.Header, rq *PlayerCreateRequest) (int, http.Header, *game.Player, error) {
playerRecord := &record.PlayerRecord{&rq.Player}
err := playerRecord.Create(handler.db)
if nil != err {
return http.StatusInternalServerError, nil, nil, errors.New("Could not create player in database")
}
glog.Printf("Created player #%d: %s\n", rq.Player.Id, rq.Player.Name)
return http.StatusCreated, nil, &rq.Player, nil
}
}
type PlayerDeleteHandler struct {
db *sql.DB
}
func (h PlayerDeleteHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
player_id_str := r.URL.Query().Get("player_id")
player_id, err := strconv.ParseUint(player_id_str, 10, 64)
if nil != err {
http.Error(w, "Not found", http.StatusNotFound)
return
}
playerRecord := &record.PlayerRecord{&game.Player{Id: (int)(player_id)}}
err = playerRecord.Delete(h.db)
if nil != err {
http.Error(w, "Could not delete player from database", http.StatusInternalServerError)
return
}
glog.Printf("Deleted player #%d\n", player_id)
}
type SessionsHandler struct{}
func (h SessionsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
err := json.NewEncoder(w).Encode(sessions)
if ( nil != err ) {
http.Error(w, "Error", http.StatusInternalServerError)
}
}
type SessionCreateHandler struct {
db *sql.DB
}
type SessionCreateHash struct {
StartedDate string `json:"started_date"`
Game string `json:"game"`
Players []string `json:"players"`
}
type SessionCreateRequest struct {
Session SessionCreateHash `json:"session"`
}
func fetchPlayersById(db *sql.DB, playerIds []int) ([]*game.Player, error) {
players := make([]*game.Player, len(playerIds))
for i, playerId := range playerIds {
var name string
err := db.QueryRow("SELECT name FROM players WHERE id = $1", playerId).Scan(&name)
if err != nil {
return players, err
}
players[i] = &game.Player{playerId, name}
}
return players, nil
}
// Persist a new session
func (handler SessionCreateHandler) marshalFunc() (func(*url.URL, http.Header, *SessionCreateRequest) (int, http.Header, *session.Session, error)) {
return func(u *url.URL, h http.Header, rq *SessionCreateRequest) (int, http.Header, *session.Session, error) {
var err error
var game_id uint64
game_id, err = strconv.ParseUint(rq.Session.Game, 10, 64)
if nil != err {
return http.StatusBadRequest, nil, nil, errors.New("Expected integer game ID")
}
player_ids := make([]int, 0)
for _, player_id_str := range rq.Session.Players {
player_id, err := strconv.ParseInt(player_id_str, 10, 32)
if nil != err {
return http.StatusBadRequest, nil, nil, errors.New("Expected integer player ID")
}
player_ids = append(player_ids, (int)(player_id))
}
var players []*game.Player
players, err = fetchPlayersById(handler.db, player_ids)
if nil != err {
return http.StatusInternalServerError, nil, nil, err
}
var _session *session.Session
_session, err = session.NewSession(gameIndex[game_id], players)
if nil != err {
return http.StatusInternalServerError, nil, nil, err
}
_session.StepAllPlayers()
err = record.NewSessionRecord(_session).Create(handler.db)
if nil != err {
return http.StatusInternalServerError, nil, nil, err
}
sessions = append(sessions, _session)
sessionIndex[(uint64)(_session.Id)] = _session
for _,step := range _session.SetupSteps {
glog.Printf("Session #%d: Created with step %s\n", _session.Id, _session.StepWithAssigneeString(step))
}
return http.StatusCreated, nil, _session, nil
}
}
type SessionHandler struct{}
func (h SessionHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
id_str := r.URL.Query().Get("session_id")
id, err := strconv.ParseUint(id_str, 10, 64)
if nil != err {
http.Error(w, "Not found", http.StatusNotFound)
return
}
session, ok := sessionIndex[id]
if ok {
err := json.NewEncoder(w).Encode(session)
if ( nil != err ) {
http.Error(w, "Error", http.StatusInternalServerError)
}
} else {
http.Error(w, "Not found", http.StatusNotFound)
}
}
type StepHandler struct{
db *sql.DB
}
func (h StepHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
session_id_str := r.URL.Query().Get("session_id")
session_id, err := strconv.ParseUint(session_id_str, 10, 64)
if nil != err {
http.Error(w, "Session not found", http.StatusNotFound)
return
}
session,ok := sessionIndex[session_id]
if !ok {
http.Error(w, "Session not found", http.StatusNotFound)
return
}
player_id_str := r.URL.Query().Get("player_id")
player_id, err := strconv.ParseUint(player_id_str, 10, 64)
if nil != err {
http.Error(w, "Player not found", http.StatusNotFound)
return
}
player := &game.Player{}
playerRecord := &record.PlayerRecord{player}
err = playerRecord.Find(h.db, (int)(player_id))
if nil != err {
http.Error(w, "Player not found", http.StatusNotFound)
return
}
step_desc,err := url.QueryUnescape(r.URL.Query().Get("step_desc"))
for _,step := range session.SetupSteps {
if ( step.Rule.Description == step_desc && step.CanBeOwnedBy(player) ) {
step.Finish() // FIXME. Should look in request data to see what to change.
glog.Printf("Session #%d: Finished step %s\n", session.Id, session.StepWithAssigneeString(step))
rec := &record.SetupStepRecord{Step: step, SessionId: (int)(session.Id)}
err := rec.Update(h.db)
if nil != err {
// FIXME: Revert to the previous state if we can't save.
http.Error(w, fmt.Sprintf("Error saving update to step: %s", err), http.StatusInternalServerError)
return
}
nextStep := session.Step(player)
if step.Equal(nextStep) {
glog.Printf("Session #%d: Player %s is done", session.Id, player)
} else {
glog.Printf("Session #%d: Assigned step %s\n", session.Id, session.StepWithAssigneeString(nextStep))
}
if nextStep != step && nil != nextStep {
lastAssignmentRec := &record.SetupStepAssignmentRecord{session, player, step.Rule}
err = lastAssignmentRec.Delete(h.db)
if nil != err {
http.Error(w, fmt.Sprintf("Error removing assignment of last step: %s", err), http.StatusInternalServerError)
return
}
nextAssignmentRec := &record.SetupStepAssignmentRecord{session, player, nextStep.Rule}
err = nextAssignmentRec.Create(h.db)
if nil != err {
http.Error(w, fmt.Sprintf("Error creating assignment of next step: %s", err), http.StatusInternalServerError)
return
}
}
return // Found the matching step, so return response
}
}
http.Error(w, "Step not found", http.StatusNotFound)
}
func main() {
databaseName := "meeple_mover"
if databaseNameOption := os.Getenv("MEEPLE_MOVER_DB_NAME"); databaseNameOption != "" {
databaseName = databaseNameOption
}
connectString := fmt.Sprintf("user=ralph dbname=%s sslmode=disable", databaseName)
connectMsg := fmt.Sprintf("Connected to database %s", databaseName)
if herokuConnectString := os.Getenv("HEROKU_POSTGRESQL_SILVER_URL"); herokuConnectString != "" {
connectString = herokuConnectString
connectMsg = fmt.Sprintf("Connected to Heroku database")
}
db, err := sql.Open("postgres", connectString)
if err != nil {
glog.Print(err)
} else {
glog.Println(connectMsg)
}
defer db.Close()
err = initGameData(db)
if err != nil {
glog.Panicf("Error initializing games: %s\n", err)
}
err = initSessionData(db)
if err != nil {
glog.Panicf("Error initializing sessions: %s\n", err)
}
var origin string
origin = os.Getenv("MEEPLE_MOVER_ORIGIN_URL")
if "" == origin {
origin = "http://localhost:8000"
}
cors := tigertonic.NewCORSBuilder().AddAllowedOrigins(origin).AddAllowedHeaders("Content-Type")
glog.Printf("Allowed CORS origin %s\n", origin)
mux := tigertonic.NewTrieServeMux()
mux.Handle("GET", "/games", cors.Build(CollectionHandler{}))
mux.Handle("GET", "/games/{id}", cors.Build(GameHandler{}))
mux.Handle("GET", "/players", cors.Build(PlayersHandler{db}))
mux.Handle("GET", "/players/{player_id}", cors.Build(PlayerHandler{db}))
mux.Handle("POST", "/players", cors.Build(tigertonic.Marshaled(PlayerCreateHandler{db}.marshalFunc())))
mux.Handle("DELETE", "/players/{player_id}", cors.Build(PlayerDeleteHandler{db}))
mux.Handle("GET", "/sessions", cors.Build(SessionsHandler{}))
mux.Handle("POST", "/sessions", cors.Build(tigertonic.Marshaled(SessionCreateHandler{db}.marshalFunc())))
mux.Handle("GET", "/sessions/{session_id}", cors.Build(SessionHandler{}))
mux.Handle("PUT", "/sessions/{session_id}/players/{player_id}/steps/{step_desc}", cors.Build(StepHandler{db}))
var port string
port = os.Getenv("PORT")
if "" == port {
port = "8080"
}
http.ListenAndServe(fmt.Sprintf(":%s", port), mux)
}