server/http.go

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package main
import (
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"bitbucket.org/hackerbots/bot"
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"code.google.com/p/go.net/websocket"
"encoding/json"
"fmt"
"log"
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"net/http"
"strings"
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)
type JsonHandler func(http.ResponseWriter, *http.Request)
func (h JsonHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "application/json")
h(w, req)
}
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func startGame(w http.ResponseWriter, req *http.Request) {
new_game_name := idg.Hash()
_g := NewGame(new_game_name, *width, *height)
go _g.run()
games.Lock()
games.m[new_game_name] = _g
games.Unlock()
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w.Write([]byte(fmt.Sprintf(`{"id": "%s"}`, new_game_name)))
}
func stopGame(w http.ResponseWriter, req *http.Request) {
trimmed := strings.Trim(req.URL.Path, "/")
fullPath := strings.Split(trimmed, "/")
if len(fullPath) != 3 {
http.Error(w, "improperly formed url", http.StatusBadRequest)
return
}
key := fullPath[2]
games.Lock()
gameid, ok := games.m[key]
defer games.Unlock()
if !ok {
http.NotFound(w, req)
return
}
gameid.kill <- true
}
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func listGames(w http.ResponseWriter, req *http.Request) {
games.RLock()
defer games.RUnlock()
type pout struct {
Name string `json:"name"`
Id string `json:"id"`
}
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type gl struct {
Id string `json:"id"`
Players []pout `json:"players"`
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}
ids := make([]gl, 0)
for id, g := range games.m {
players := make([]pout, 0)
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for p, _ := range g.players {
// XXX: change this to be the user-provided bot name?
players = append(players, pout{
Name: p.Robot.Name,
Id: p.Robot.Id,
})
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}
ids = append(ids, gl{
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Id: id,
Players: players,
})
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}
if err := json.NewEncoder(w).Encode(ids); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
func addPlayer(ws *websocket.Conn) {
// route to appropriate game ...
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var gid bot.GameID
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err := websocket.JSON.Receive(ws, &gid)
if err != nil {
log.Println("problem parsing the requested game id")
return
}
games.Lock()
game, ok := games.m[gid.Id]
games.Unlock()
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if !ok {
log.Println("ERROR: game not found")
websocket.JSON.Send(ws, bot.NewFailure("game 404"))
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return
}
id := idg.Hash()
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conf, err := Negociate(ws, id, game.width, game.height)
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if err != nil {
websocket.JSON.Send(ws, bot.NewFailure(err.Error()))
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}
if conf != nil {
p := &player{
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Robot: bot.Robot{
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Stats: conf.Stats,
Id: id,
Name: conf.Name,
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Health: conf.Stats.Hp,
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Scanners: make([]bot.Scanner, 0)},
send: make(chan *bot.Boardstate),
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ws: ws,
}
p.reset()
game.register <- p
defer func() {
game.unregister <- p
}()
go p.sender()
p.recv()
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log.Printf("game %s: player %v has been disconnected from this game\n", gid.Id, p.Robot.Id)
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} else {
s := &Spectator{
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send: make(chan *bot.Boardstate),
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ws: ws,
}
game.sregister <- s
defer func() {
game.sunregister <- s
}()
s.sender()
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log.Printf("game %s: spectator %+v has been disconnected from this game\n", s)
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}
}