From 06e21750213ba3e1d4de15f50499f99ac6bc6fcf Mon Sep 17 00:00:00 2001
From: Steve <stryan@saintnet.tech>
Date: Mon, 7 Mar 2022 14:47:21 -0500
Subject: [PATCH] session skeleton up

---
 api.go       | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 api_types.go | 20 +++++++++++++
 session.go   | 73 +++++++++++++++++++++++++++++++++++++++------
 3 files changed, 167 insertions(+), 9 deletions(-)

diff --git a/api.go b/api.go
index 7a55036..3412246 100644
--- a/api.go
+++ b/api.go
@@ -53,6 +53,7 @@ func (a *API) GetGame(res http.ResponseWriter, req *http.Request) {
 		respondWithError(res, http.StatusBadRequest, "No such game")
 		return
 	}
+	//TODO filter based off player info
 	respondWithJSON(res, http.StatusOK, gameResp{s.simulator})
 	return
 }
@@ -83,3 +84,85 @@ func (a *API) GetGameStatus(res http.ResponseWriter, req *http.Request) {
 	}
 	respondWithJSON(res, http.StatusOK, gameStatusResp{s.simulator.State, s.moveNum})
 }
+
+//PostMove attempts to make a game move
+func (a *API) PostMove(res http.ResponseWriter, req *http.Request) {
+	vars := mux.Vars(req)
+	id, err := strconv.Atoi(vars["id"])
+	if err != nil {
+		respondWithError(res, http.StatusBadRequest, "Invalid game ID")
+		return
+	}
+	var gr gameMovePostReq
+	decoder := json.NewDecoder(req.Body)
+	if err := decoder.Decode(&gr); err != nil {
+		respondWithError(res, http.StatusBadRequest, "Invalid resquest payload")
+		return
+	}
+	defer req.Body.Close()
+	if gr.PlayerID != "red" && gr.PlayerID != "blue" {
+		respondWithError(res, http.StatusBadRequest, "Bad player ID")
+		return
+	}
+	var p *Player
+
+	s, isset := a.games[id]
+	if !isset {
+		respondWithError(res, http.StatusBadRequest, "No such game")
+		return
+	}
+	if gr.PlayerID == "red" {
+		p = s.redPlayer
+	} else {
+		p = s.bluePlayer
+	}
+	parsed, err := s.tryMove(p, gr.Move)
+	if err != nil {
+		respondWithJSON(res, http.StatusOK, gameMovePostRes{false, false, parsed.String(), err})
+	}
+
+}
+
+//GetMove returns the move made at turn X
+func (a *API) GetMove(res http.ResponseWriter, req *http.Request) {
+	vars := mux.Vars(req)
+	id, err := strconv.Atoi(vars["id"])
+	if err != nil {
+		respondWithError(res, http.StatusBadRequest, "Invalid game ID")
+		return
+	}
+	move, err := strconv.Atoi(vars["move_number"])
+	if err != nil {
+		respondWithError(res, http.StatusBadRequest, "Invalid move number")
+		return
+	}
+	var gr gameMoveReq
+	decoder := json.NewDecoder(req.Body)
+	if err := decoder.Decode(&gr); err != nil {
+		respondWithError(res, http.StatusBadRequest, "Invalid resquest payload")
+		return
+	}
+	defer req.Body.Close()
+	if gr.PlayerID != "red" && gr.PlayerID != "blue" {
+		respondWithError(res, http.StatusBadRequest, "Bad player ID")
+		return
+	}
+	var p *Player
+
+	s, isset := a.games[id]
+	if !isset {
+		respondWithError(res, http.StatusBadRequest, "No such game")
+		return
+	}
+	if gr.PlayerID == "red" {
+		p = s.redPlayer
+	} else {
+		p = s.bluePlayer
+	}
+	moveRes, err := s.getMove(p, move)
+	if err != nil {
+		respondWithError(res, http.StatusBadRequest, "No such move")
+		return
+	}
+	respondWithJSON(res, http.StatusOK, gameMoveRes{moveRes})
+}
diff --git a/api_types.go b/api_types.go
index 6cfe3f6..67b9508 100644
--- a/api_types.go
+++ b/api_types.go
@@ -25,3 +25,23 @@ type gameStatusResp struct {
 	GameStatus freego.GameState `json:"game_status"`
 	Move       int              `json:"move"`
 }
+
+type gameMovePostReq struct {
+	PlayerID string `json:"player_id"`
+	Move     string `json:"move"`
+}
+
+type gameMovePostRes struct {
+	Valid  bool   `json:"valid"`
+	Result bool   `json:"result"`
+	Parsed string `json:"parsed"`
+	Error  error  `json:"error"`
+}
+
+type gameMoveReq struct {
+	PlayerID string `json:"player_id"`
+}
+
+type gameMoveRes struct {
+	Move string `json:"move"`
+}
diff --git a/session.go b/session.go
index c81e2b7..69b2f45 100644
--- a/session.go
+++ b/session.go
@@ -1,21 +1,76 @@
 package main
 
-import "git.saintnet.tech/stryan/freego"
+import (
+	"errors"
+	"fmt"
+
+	"git.saintnet.tech/stryan/freego"
+)
 
 //Session represents an active game
 type Session struct {
-	simulator *freego.Game
-	redReady  bool
-	blueReady bool
-	moveNum   int
+	simulator  *freego.Game
+	redPlayer  *Player
+	bluePlayer *Player
+	moveNum    int
+	moveList   []freego.ParsedCommand
+}
+
+//Player is a player in a match
+type Player struct {
+	Ready bool
+	Team  freego.Colour
+}
+
+//ID returns player ID
+func (p *Player) ID() int {
+	panic("not implemented") // TODO: Implement
+}
+
+//Colour returns player team
+func (p *Player) Colour() freego.Colour {
+	return p.Team
 }
 
 //NewSession creates a new game session
 func NewSession() *Session {
 	return &Session{
-		simulator: freego.NewGame(),
-		redReady:  false,
-		blueReady: false,
-		moveNum:   0,
+		simulator:  freego.NewGame(),
+		redPlayer:  &Player{false, freego.Red},
+		bluePlayer: &Player{false, freego.Blue},
+		moveNum:    0,
+		moveList:   []freego.ParsedCommand{},
 	}
 }
+
+func (s *Session) tryMove(player *Player, move string) (*freego.ParsedCommand, error) {
+	raw, err := freego.NewRawCommand(move)
+	if err != nil {
+		return nil, err
+	}
+	p, err := s.simulator.Parse(player, raw)
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
+
+func (s *Session) mutate(p *freego.ParsedCommand) error {
+	success, err := s.simulator.Mutate(p)
+	if err != nil {
+		return err
+	}
+	if !success {
+		return errors.New("invalid move")
+	}
+	s.moveList[s.moveNum] = *p
+	s.moveNum++
+	return nil
+}
+
+func (s *Session) getMove(p *Player, num int) (string, error) {
+	if num < 0 || num > s.moveNum {
+		return "", errors.New("invalid move number")
+	}
+	return fmt.Sprintf("%v %v", num, s.moveList[num].String()), nil
+}