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-rw-r--r--src/battle.go846
1 files changed, 846 insertions, 0 deletions
diff --git a/src/battle.go b/src/battle.go
new file mode 100644
index 0000000..3d418f2
--- /dev/null
+++ b/src/battle.go
@@ -0,0 +1,846 @@
+package main
+
+import (
+	"fmt"
+	"html/template"
+	"log"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/gorilla/mux"
+)
+
+type Battle struct {
+	ID     int
+	Name   string
+	Bots   []Bot
+	Owners []User
+	Public bool
+	Archs  []Arch
+	Bits   []Bit
+}
+
+//////////////////////////////////////////////////////////////////////////////
+// GENERAL PURPOSE
+
+func BattleGetAll() ([]Battle, error) {
+	return globalState.GetAllBattles()
+}
+
+func BattleCreate(name string, public bool) (int, error) {
+	return globalState.InsertBattle(Battle{Name: name, Public: public})
+}
+
+func BattleLinkBot(botid int, battleid int) error {
+	return globalState.LinkBotBattle(botid, battleid)
+}
+
+func BattleGetByIdDeep(id int) (Battle, error) {
+	return globalState.GetBattleByIdDeep(id)
+}
+
+func BattleUpdate(battle Battle) error {
+	return globalState.UpdateBattle(battle)
+}
+
+func BattleLinkArchIDs(battleid int, archIDs []int) error {
+	return globalState.LinkArchIDsToBattle(battleid, archIDs)
+}
+
+func BattleLinkBitIDs(battleid int, bitIDs []int) error {
+	return globalState.LinkBitIDsToBattle(battleid, bitIDs)
+}
+
+//////////////////////////////////////////////////////////////////////////////
+// DATABASE
+
+func (s *State) InsertBattle(battle Battle) (int, error) {
+	res, err := s.db.Exec("INSERT INTO battles VALUES(NULL,?,?,?);", time.Now(), battle.Name, battle.Public)
+	if err != nil {
+		return -1, err
+	}
+
+	var id int64
+	if id, err = res.LastInsertId(); err != nil {
+		return -1, err
+	}
+	return int(id), nil
+}
+
+func (s *State) UpdateBattle(battle Battle) error {
+	_, err := s.db.Exec("UPDATE battles SET name=?, public=? WHERE id=?", battle.Name, battle.Public, battle.ID)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (s *State) LinkBotBattle(botid int, battleid int) error {
+	_, err := s.db.Exec("INSERT INTO bot_battle_rel VALUES (?, ?)", botid, battleid)
+	if err != nil {
+		log.Println("Error linking bot to battle: ", err)
+		return err
+	} else {
+		return nil
+	}
+}
+
+func (s *State) LinkArchIDsToBattle(battleid int, archIDs []int) error {
+	// delete preexisting links
+	_, err := s.db.Exec("DELETE FROM arch_battle_rel WHERE battle_id=?;", battleid)
+	if err != nil {
+		return err
+	}
+
+	// yes, we're building this by hand, but as we only insert int's I'm just confident that whoever
+	// gets some sqli here just deserves it :D
+	query := "INSERT INTO arch_battle_rel (arch_id, battle_id) VALUES"
+	for idx, id := range archIDs {
+		query += fmt.Sprintf("(%d, %d)", id, battleid)
+		if idx != len(archIDs)-1 {
+			query += ", "
+		}
+	}
+	query += ";"
+	log.Println(query)
+
+	_, err = s.db.Exec(query)
+	if err != nil {
+		log.Println("LinkArchIDsToBattle err: ", err)
+		return err
+	} else {
+		return nil
+	}
+}
+
+func (s *State) LinkBitIDsToBattle(battleid int, bitIDs []int) error {
+	// delete preexisting links
+	_, err := s.db.Exec("DELETE FROM bit_battle_rel WHERE battle_id=?;", battleid)
+	if err != nil {
+		return err
+	}
+
+	// yes, we're building this by hand, but as we only insert int's I'm just confident that whoever
+	// gets some sqli here just deserves it :D
+	query := "INSERT INTO bit_battle_rel (bit_id, battle_id) VALUES"
+	for idx, id := range bitIDs {
+		query += fmt.Sprintf("(%d, %d)", id, battleid)
+		if idx != len(bitIDs)-1 {
+			query += ", "
+		}
+	}
+	query += ";"
+	log.Println(query)
+
+	_, err = s.db.Exec(query)
+	if err != nil {
+		log.Println("LinkBitIDsToBattle err: ", err)
+		return err
+	} else {
+		return nil
+	}
+}
+
+func (s *State) GetAllBattles() ([]Battle, error) {
+	rows, err := s.db.Query("SELECT id, name FROM battles;")
+	defer rows.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	var battles []Battle
+	for rows.Next() {
+		var battle Battle
+		if err := rows.Scan(&battle.ID, &battle.Name); err != nil {
+			log.Println(err)
+			return battles, err
+		}
+		battles = append(battles, battle)
+	}
+	if err = rows.Err(); err != nil {
+		log.Println(err)
+		return battles, err
+	}
+	return battles, nil
+}
+
+func (s *State) GetBattleByIdDeep(id int) (Battle, error) {
+	var battleid int
+	var battlename string
+	var battlepublic bool
+
+	var botids string
+	var botnames string
+
+	var userids string
+	var usernames string
+
+	var archids string
+	var archnames string
+
+	var bitids string
+	var bitnames string
+
+	// battles have associated bots and users, we're fetching 'em all!
+
+	// This fetches the battles and relates the associated bots, users, archs and bits
+
+	err := s.db.QueryRow(`
+	SELECT DISTINCT
+		ba.id, ba.name, ba.public,
+		COALESCE(group_concat(DISTINCT bb.bot_id), ""),
+		COALESCE(group_concat(DISTINCT bo.name), ""),
+		COALESCE(group_concat(DISTINCT ub.user_id), ""),
+		COALESCE(group_concat(DISTINCT us.name), ""),
+		COALESCE(group_concat(DISTINCT ab.arch_id), ""),
+		COALESCE(group_concat(DISTINCT ar.name), ""),
+		COALESCE(group_concat(DISTINCT bitbat.bit_id), ""),
+		COALESCE(group_concat(DISTINCT bi.name), "")
+	FROM battles ba
+
+	LEFT JOIN bot_battle_rel bb ON bb.battle_id = ba.id
+	LEFT JOIN bots bo ON bo.id = bb.bot_id
+
+	LEFT JOIN user_battle_rel ub ON ub.battle_id = ba.id
+	LEFT JOIN users us ON us.id = ub.user_id
+
+	LEFT JOIN arch_battle_rel ab ON ab.battle_id = ba.id
+	LEFT JOIN archs ar ON ar.id = ab.arch_id
+
+	LEFT JOIN bit_battle_rel bitbat ON bitbat.battle_id = ba.id
+	LEFT JOIN bits bi ON bi.id = bitbat.bit_id
+
+	WHERE ba.id=?
+	GROUP BY ba.id;
+	`, id).Scan(&battleid, &battlename, &battlepublic, &botids, &botnames, &userids, &usernames, &archids, &archnames, &bitids, &bitnames)
+	if err != nil {
+		log.Println("Err making GetBattleByID query: ", err)
+		return Battle{}, err
+	}
+
+	log.Println("battleid: ", battleid)
+	log.Println("battlename: ", battlename)
+	log.Println("battlepublic: ", battlepublic)
+	log.Println("botids: ", botids)
+	log.Println("botnames: ", botnames)
+	log.Println("userids: ", userids)
+	log.Println("usernames: ", usernames)
+	log.Println("archids: ", archids)
+	log.Println("archnames: ", archnames)
+	log.Println("bitids: ", bitids)
+	log.Println("bitnames: ", bitnames)
+
+	// The below is a wonderful examle of how golang could profit from macros
+	// I should just have done this all in common lisp tbh.
+
+	// assemble the bots
+	botIDList := strings.Split(botids, ",")
+	botNameList := strings.Split(botnames, ",")
+
+	// Using strings.Split on an empty string returns a list containing
+	// nothing with a length of one
+	// https://go.dev/play/p/N1D-OcwiVAs
+
+	var bots []Bot
+	if botIDList[0] != "" {
+		for i, _ := range botIDList {
+			id, err := strconv.Atoi(botIDList[i])
+			if err != nil {
+				log.Println("Err handling bots: ", err)
+				return Battle{}, err
+			}
+			bots = append(bots, Bot{id, botNameList[i], "", []User{}, []Arch{}, []Bit{}})
+		}
+	} else {
+		bots = []Bot{}
+	}
+
+	// assemble the users
+	userIDList := strings.Split(userids, ",")
+	userNameList := strings.Split(usernames, ",")
+
+	var users []User
+	if userIDList[0] != "" {
+		for i, _ := range userIDList {
+			id, err := strconv.Atoi(userIDList[i])
+			if err != nil {
+				log.Println("Err handling users: ", err)
+				return Battle{}, err
+			}
+			users = append(users, User{id, userNameList[i], []byte{}})
+		}
+	} else {
+		users = []User{}
+	}
+
+	// assemble the archs
+	archIDList := strings.Split(archids, ",")
+	archNameList := strings.Split(archnames, ",")
+
+	var archs []Arch
+	if archIDList[0] != "" {
+		for i, _ := range archIDList {
+			id, err := strconv.Atoi(archIDList[i])
+			if err != nil {
+				log.Println("Err handling archs: ", err)
+				return Battle{}, err
+			}
+			archs = append(archs, Arch{id, archNameList[i], true})
+		}
+	} else {
+		archs = []Arch{}
+	}
+
+	// assemble the bits
+	bitIDList := strings.Split(bitids, ",")
+	bitNameList := strings.Split(bitnames, ",")
+
+	var bits []Bit
+	if bitIDList[0] != "" {
+		for i, _ := range bitIDList {
+			id, err := strconv.Atoi(bitIDList[i])
+			if err != nil {
+				log.Println("Err handling bits: ", err)
+				return Battle{}, err
+			}
+			bits = append(bits, Bit{id, bitNameList[i], true})
+		}
+	} else {
+		bits = []Bit{}
+	}
+
+	// return it all!
+	switch {
+	case err != nil:
+		log.Println("Overall err in the GetBattleByID func: ", err)
+		return Battle{}, err
+	default:
+		return Battle{
+			ID:     battleid,
+			Name:   battlename,
+			Bots:   bots,
+			Owners: users,
+			Public: battlepublic,
+			Archs:  archs,
+			Bits:   bits,
+		}, nil
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////////
+// HTTP
+
+func battlesHandler(w http.ResponseWriter, r *http.Request) {
+	switch r.Method {
+	case "GET":
+		// define data
+		data := map[string]interface{}{}
+		data["pagelink1"] = Link{Name: "battle", Target: "/battle"}
+		data["pagelink1options"] = []Link{
+			{Name: "bot", Target: "/bot"},
+			{Name: "user", Target: "/user"},
+		}
+		data["pagelinknext"] = []Link{
+			{Name: "new", Target: "/new"},
+		}
+
+		// sessions
+		session, _ := globalState.sessions.Get(r, "session")
+		username := session.Values["username"].(string)
+
+		// get the user
+		user, err := UserGetUserFromUsername(username)
+		if err != nil {
+			http.Redirect(w, r, "/login", http.StatusSeeOther)
+			return
+		} else {
+			data["user"] = user
+		}
+
+		// get all battles
+		battles, err := BattleGetAll()
+		data["battles"] = battles
+
+		// get the template
+		t, err := template.ParseGlob("./templates/*.html")
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte("500 - Error reading template file"))
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// exec!
+		t.ExecuteTemplate(w, "battles", data)
+	default:
+		http.Redirect(w, r, "/", http.StatusMethodNotAllowed)
+	}
+}
+
+func battleNewHandler(w http.ResponseWriter, r *http.Request) {
+	switch r.Method {
+	case "GET":
+		// define data
+		data := map[string]interface{}{}
+
+		// breadcrumb foo
+		session, _ := globalState.sessions.Get(r, "session")
+		username := session.Values["username"].(string)
+		data["pagelink1"] = Link{Name: "battle", Target: "/battle"}
+		data["pagelink1options"] = []Link{
+			{Name: "user", Target: "/user"},
+			{Name: "bot", Target: "/bot"},
+		}
+		data["pagelink2"] = Link{Name: "new", Target: "/new"}
+		data["pagelink2options"] = []Link{
+			{Name: "list", Target: ""},
+		}
+
+		// display errors passed via query parameters
+		queryres := r.URL.Query().Get("err")
+		if queryres != "" {
+			data["res"] = queryres
+		}
+
+		// get data needed
+		user, err := UserGetUserFromUsername(username)
+		if err != nil {
+			data["err"] = "Could not fetch the user"
+		} else {
+			data["user"] = user
+		}
+
+		archs, err := ArchGetAll()
+		if err != nil {
+			data["err"] = "Could not fetch the archs"
+		} else {
+			data["archs"] = archs
+		}
+
+		bits, err := BitGetAll()
+		if err != nil {
+			data["err"] = "Could not fetch the bits"
+		} else {
+			data["bits"] = bits
+		}
+
+		// get the template
+		t, err := template.ParseGlob("./templates/*.html")
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte("500 - Error reading template file"))
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// exec!
+		t.ExecuteTemplate(w, "battleNew", data)
+
+	case "POST":
+		// parse the post parameters
+		r.ParseForm()
+		name := r.Form.Get("name")
+
+		var public bool
+		query_public := r.Form.Get("public")
+		if query_public == "on" {
+			public = true
+		}
+
+		// gather the information from the arch and bit selection
+		var archIDs []int
+		var bitIDs []int
+
+		for k, _ := range r.Form {
+			if strings.HasPrefix(k, "arch-") {
+				id, err := strconv.Atoi(strings.TrimPrefix(k, "arch-"))
+				if err != nil {
+					msg := "ERROR: Invalid arch id"
+					http.Redirect(w, r, fmt.Sprintf("/battle/new?res=%s", msg), http.StatusSeeOther)
+					return
+				}
+				archIDs = append(archIDs, id)
+			}
+			if strings.HasPrefix(k, "bit-") {
+				id, err := strconv.Atoi(strings.TrimPrefix(k, "bit-"))
+				if err != nil {
+					msg := "ERROR: Invalid bit id"
+					http.Redirect(w, r, fmt.Sprintf("/battle/new?res=%s", msg), http.StatusSeeOther)
+					return
+				}
+				bitIDs = append(bitIDs, id)
+			}
+		}
+
+		if name != "" {
+			// create the battle itself
+			log.Println("Creating battle")
+			battleid, err := BattleCreate(name, public)
+			if err != nil {
+				log.Println("Error creating the battle using BattleCreate(): ", err)
+				msg := "ERROR: Could not create due to internal reasons"
+				http.Redirect(w, r, fmt.Sprintf("/battle/new?res=%s", msg), http.StatusSeeOther)
+				return
+			}
+
+			// link archs to battle
+			err = BattleLinkArchIDs(battleid, archIDs)
+			if err != nil {
+				log.Println("Error linking the arch ids to the battle: ", err)
+				msg := "ERROR: Could not create due to internal reasons"
+				http.Redirect(w, r, fmt.Sprintf("/battle/new?res=%s", msg), http.StatusSeeOther)
+				return
+			}
+
+			// link bits to battle
+			err = BattleLinkBitIDs(battleid, bitIDs)
+			if err != nil {
+				log.Println("Error linking the bit ids to the battle: ", err)
+				msg := "ERROR: Could not create due to internal reasons"
+				http.Redirect(w, r, fmt.Sprintf("/battle/new?res=%s", msg), http.StatusSeeOther)
+				return
+			}
+		} else {
+			msg := "ERROR: Please provide a name"
+			http.Redirect(w, r, fmt.Sprintf("/battle/new?res=%s", msg), http.StatusSeeOther)
+			return
+		}
+
+		http.Redirect(w, r, "/battle", http.StatusSeeOther)
+		return
+	default:
+		http.Redirect(w, r, "/", http.StatusMethodNotAllowed)
+	}
+}
+
+// TODO(emile): add user creating battle as default owner
+// TODO(emile): allow adding other users as owners to battles
+// TODO(emile): implement submitting bots
+// TODO(emile): implement running the battle
+// TODO(emile): add a "start battle now" button
+// TODO(emile): add a "battle starts at this time" field into the battle
+// TODO(emile): figure out how time is stored and restored with the db
+// TODO(emile): do some magic to display the current fight backlog with all info
+
+func battleSingleHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	battleid, err := strconv.Atoi(vars["id"])
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		w.Write([]byte("500 - Invalid battle id"))
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	switch r.Method {
+	case "GET":
+		// define data
+		data := map[string]interface{}{}
+		data["pagelink1"] = Link{"battle", "/battle"}
+		data["pagelink1options"] = []Link{
+			{Name: "user", Target: "/user"},
+			{Name: "bot", Target: "/bot"},
+		}
+
+		// display errors passed via query parameters
+		queryres := r.URL.Query().Get("res")
+		if queryres != "" {
+			data["res"] = queryres
+		}
+
+		session, _ := globalState.sessions.Get(r, "session")
+		username := session.Values["username"].(string)
+
+		viewer, err := UserGetUserFromUsername(username)
+		if err != nil {
+			data["err"] = "Could not get the id four your username... Please contact an admin"
+		}
+		data["user"] = viewer
+
+		// get the battle including it's users, bots, archs, bits
+		battle, err := BattleGetByIdDeep(int(battleid))
+		data["battle"] = battle
+		data["botAmount"] = len(battle.Bots)
+		data["battleCount"] = (len(battle.Bots) * len(battle.Bots)) * 2
+
+		// define the breadcrumbs
+		data["pagelink2"] = Link{battle.Name, fmt.Sprintf("/%d", battle.ID)}
+
+		allbattleNames, err := BattleGetAll()
+		var opts []Link
+		for _, battle := range allbattleNames {
+			opts = append(opts, Link{Name: battle.Name, Target: fmt.Sprintf("/%d", battle.ID)})
+		}
+		data["pagelink2options"] = opts
+
+		// get the bots of the user viewing the page, as they might want to submit them
+		myBots, err := UserGetBotsUsingUsername(username)
+		if err != nil {
+			log.Println("err: ", err)
+			http.Redirect(w, r, fmt.Sprintf("/battle/%d", battleid), http.StatusSeeOther)
+			return
+		}
+		data["myBots"] = myBots
+
+		// get all architectures and set the enable flag on the ones that are enabled in the battle
+		archs, err := ArchGetAll()
+		if err != nil {
+			data["err"] = "Could not fetch the archs"
+		} else {
+			data["archs"] = archs
+		}
+
+		for i, a := range archs {
+			for _, b := range battle.Archs {
+				if a.ID == b.ID {
+					archs[i].Enabled = true
+				}
+			}
+		}
+
+		// get all bits and set the enable flag on the ones that are enabled in the battle
+		bits, err := BitGetAll()
+		if err != nil {
+			data["err"] = "Could not fetch the bits"
+		} else {
+			data["bits"] = bits
+		}
+
+		for i, a := range bits {
+			for _, b := range battle.Bits {
+				if a.ID == b.ID {
+					bits[i].Enabled = true
+				}
+			}
+		}
+
+		// check if we're allowed to edit
+		editable := false
+		for _, owner := range battle.Owners {
+			if owner.ID == viewer.ID {
+				editable = true
+			}
+		}
+		if editable == true {
+			data["editable"] = true
+		}
+
+		// get the template
+		t, err := template.ParseGlob("./templates/*.html")
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte("500 - Error reading template file"))
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// exec!
+		t.ExecuteTemplate(w, "battleSingle", data)
+
+	case "POST":
+		log.Println("POST!")
+		// checking if the user submitting the battle information is allowed to do so
+		// session, _ := globalState.sessions.Get(r, "session")
+		// username := session.Values["username"].(string)
+
+		// get the user submitting
+		// log.Println("Getting the user submitting the change request...")
+		// requesting_user, err := UserGetUserFromUsername(username)
+		// if err != nil {
+		// 	log.Println("err: ", err)
+		// 	http.Redirect(w, r, fmt.Sprintf("/battle/%d", battleid), http.StatusSeeOther)
+		// 	return
+		// }
+
+		// get the users the battle belongs to
+		// log.Println("Getting the user the battle belongs to...")
+		// orig_battle, err := BattleGetByIdDeep(int(battleid))
+		// if err != nil {
+		// 	log.Println("err: ", err)
+		// 	http.Redirect(w, r, fmt.Sprintf("/battle/%d", battleid), http.StatusSeeOther)
+		// 	return
+		// }
+
+		// check if the user submitting the change request is within the users the battle belongs to
+		// log.Println("Checking if edit is allowed...")
+		// allowed_to_edit := false
+		// for _, user := range orig_battle.Owners {
+		// 	if user.ID == requesting_user.ID {
+		// 		allowed_to_edit = true
+		// 	}
+		// }
+
+		// if allowed_to_edit == false {
+		// 	msg := "ERROR: You aren't allowed to edit this battle!"
+		// 	http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s", battleid, msg), http.StatusSeeOther)
+		// 	return
+		// }
+
+		// at this point, we're sure the user is allowed to edit the battle
+
+		r.ParseForm()
+
+		log.Println("r.Form: ", r.Form)
+		form_name := r.Form.Get("name")
+
+		var public bool
+		if r.Form.Get("public") == "on" {
+			public = true
+		}
+
+		// gather the information from the arch and bit selection
+		var archIDs []int
+		var bitIDs []int
+
+		for k, _ := range r.Form {
+			if strings.HasPrefix(k, "arch-") {
+				id, err := strconv.Atoi(strings.TrimPrefix(k, "arch-"))
+				if err != nil {
+					msg := "ERROR: Invalid arch id"
+					http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s#settings", battleid, msg), http.StatusSeeOther)
+					return
+				}
+				archIDs = append(archIDs, id)
+			}
+			if strings.HasPrefix(k, "bit-") {
+				id, err := strconv.Atoi(strings.TrimPrefix(k, "bit-"))
+				if err != nil {
+					msg := "ERROR: Invalid bit id"
+					http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s#settings", battleid, msg), http.StatusSeeOther)
+					return
+				}
+				bitIDs = append(bitIDs, id)
+			}
+		}
+
+		// link archs to battle
+		err = BattleLinkArchIDs(battleid, archIDs)
+		if err != nil {
+			log.Println("Error linking the arch ids to the battle: ", err)
+			msg := "ERROR: Could not create due to internal reasons"
+			http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s#settings", battleid, msg), http.StatusSeeOther)
+			return
+		}
+
+		// link bits to battle
+		err = BattleLinkBitIDs(battleid, bitIDs)
+		if err != nil {
+			log.Println("Error linking the bit ids to the battle: ", err)
+			msg := "ERROR: Could not create due to internal reasons"
+			http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s#settings", battleid, msg), http.StatusSeeOther)
+			return
+		}
+
+		new_battle := Battle{int(battleid), form_name, []Bot{}, []User{}, public, []Arch{}, []Bit{}}
+
+		log.Println("Updating battle...")
+		err = BattleUpdate(new_battle)
+		if err != nil {
+			log.Println("err: ", err)
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte("500 - Error inserting battle into db"))
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=Success!#settings", battleid), http.StatusSeeOther)
+
+	default:
+		http.Redirect(w, r, "/", http.StatusMethodNotAllowed)
+	}
+}
+
+func battleSubmitHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	battleid, err := strconv.Atoi(vars["id"])
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		w.Write([]byte("500 - Invalid battle id"))
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	switch r.Method {
+	case "POST":
+		r.ParseForm()
+
+		log.Println("Adding bot to battle", battleid)
+		log.Println(r.Form)
+
+		// get all the form values that contain the bot that shall be submitted
+		var botIDs []int
+		for k, _ := range r.Form {
+			if strings.HasPrefix(k, "bot-") {
+				id, err := strconv.Atoi(strings.TrimPrefix(k, "bot-"))
+				if err != nil {
+					msg := "ERROR: Invalid bot supplied"
+					http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s", battleid, msg), http.StatusSeeOther)
+					return
+				}
+				botIDs = append(botIDs, id)
+			}
+		}
+
+		log.Println(botIDs)
+
+		battle, err := BattleGetByIdDeep(battleid)
+		if err != nil {
+			msg := "ERROR: Couln't get the battle with the given id"
+			http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s", battleid, msg), http.StatusSeeOther)
+			return
+		}
+		log.Println(battle)
+
+		// for all bots, get their bits and arch and compare them to the one of the battle
+		for _, id := range botIDs {
+			bot, err := BotGetById(id)
+			if err != nil {
+				msg := fmt.Sprintf("ERROR: Couldn't get bot with id %d", id)
+				http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s", battleid, msg), http.StatusSeeOther)
+				return
+			}
+
+			var archValid bool = false
+			for _, battle_arch := range battle.Archs {
+				for _, bot_arch := range bot.Archs {
+					if battle_arch.ID == bot_arch.ID {
+						archValid = true
+					}
+				}
+			}
+
+			var bitValid bool = false
+			for _, battle_bit := range battle.Bits {
+				for _, bot_bit := range bot.Bits {
+					if battle_bit.ID == bot_bit.ID {
+						bitValid = true
+					}
+				}
+			}
+
+			if archValid && bitValid {
+				log.Printf("arch and bit valid, adding bot with id %d to battle with id %d\n", id, battleid)
+				BattleLinkBot(id, battleid)
+			} else {
+				if archValid == false {
+					msg := "Bot has an invalid architecture!"
+					http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s", battleid, msg), http.StatusSeeOther)
+					return
+				}
+				if bitValid == false {
+					msg := "Bot has an invalid 'bit-ness'!"
+					http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s", battleid, msg), http.StatusSeeOther)
+					return
+				}
+			}
+
+			log.Println(bot)
+		}
+		msg := "Success!"
+		http.Redirect(w, r, fmt.Sprintf("/battle/%d?res=%s", battleid, msg), http.StatusSeeOther)
+	default:
+		http.Redirect(w, r, "/", http.StatusMethodNotAllowed)
+	}
+}
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