Feat: Create ELO System

This commit is contained in:
zuma 2025-06-10 20:12:09 +02:00
parent 9cb5f99c2f
commit 9645f4f195
5 changed files with 892 additions and 1 deletions

View file

@ -2,7 +2,8 @@ Le backend du site Brawlset est codé en [GO](https://go.dev/) et utilise [Pocke
# TODO
- [ ] Feat : Créer le système d'ELO
- [x] Feat : Créer le système d'ELO
- [ ] Feat : Update les ELO quand il y a un changement ou une suppression de match
- [x] Fix : Changer le recto / verso des cartes
- [ ] Feat : Système d'évènements à ajouter sur la page principale
- [ ] Fix : Refuse to create deck when cards are not found

287
backend/hooks.go Normal file
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@ -0,0 +1,287 @@
package main
import (
"fmt"
"log"
"math"
"slices"
"github.com/pocketbase/dbx"
"github.com/pocketbase/pocketbase/core"
)
type DuelResult struct {
Player1_NewELO float64
Player2_NewELO float64
Commander1_NewELO float64
Commander2_NewELO float64
}
func (app *application) SetupHooks() {
// Set default values after creation
app.pb.OnRecordAfterCreateSuccess("elo_player").BindFunc(func (e *core.RecordEvent) error {
e.Record.Set("elo_casual", 100)
e.Record.Set("elo_tournament", 100)
e.App.Save(e.Record)
log.Println("record created")
return e.Next()
})
// When a ELO entry has been added
app.pb.OnRecordCreate("elo").BindFunc(func (e *core.RecordEvent) error {
date := e.Record.GetString("date")
official := e.Record.GetBool("official")
player1Id := e.Record.GetString("player_1")
player2Id := e.Record.GetString("player_2")
commander1Id := e.Record.GetString("commandant_1")
commander2Id := e.Record.GetString("commandant_2")
score1 := e.Record.GetInt("score_1")
score2 := e.Record.GetInt("score_2")
// Base data in case it's the first match
player1_ELO := 100.0
player2_ELO := 100.0
commander1_ELO := 100.0
commander2_ELO := 100.0
// Update ELO With last match ELO (Tournament or Casual)
updateEloPlayerWithLastMatch(e, player1Id, date, &player1_ELO, official)
updateEloPlayerWithLastMatch(e, player2Id, date, &player2_ELO, official)
// Update ELO With last match ELO (Tournament or Casual)
updateEloCommanderWithLastMatch(e, commander1Id, date, &commander1_ELO, official)
updateEloCommanderWithLastMatch(e, commander2Id, date, &commander2_ELO, official)
newData := CalculateELO(player1_ELO, player2_ELO, commander1_ELO, commander2_ELO, score1, score2)
e.Record.Set("last_elo_player_1", player1_ELO)
e.Record.Set("elo_player_1", newData.Player1_NewELO)
e.Record.Set("last_elo_player_2", player2_ELO)
e.Record.Set("elo_player_2", newData.Player2_NewELO)
e.Record.Set("last_elo_commandant_1", commander1_ELO)
e.Record.Set("elo_commandant_1", newData.Commander1_NewELO)
e.Record.Set("last_elo_commandant_2", commander2_ELO)
e.Record.Set("elo_commandant_2", newData.Commander2_NewELO)
recordPlayer1, _ := e.App.FindRecordById("elo_player", player1Id)
recordPlayer2, _ := e.App.FindRecordById("elo_player", player2Id)
if official {
recordPlayer1.Set("elo_tournament", newData.Player1_NewELO)
recordPlayer2.Set("elo_tournament", newData.Player2_NewELO)
} else {
recordPlayer1.Set("elo_casual", newData.Player1_NewELO)
recordPlayer2.Set("elo_casual", newData.Player2_NewELO)
}
recordCommander1, _ := e.App.FindRecordById("carte", commander1Id)
recordCommander2, _ := e.App.FindRecordById("carte", commander2Id)
if official {
recordCommander1.Set("elo_tournament", newData.Commander1_NewELO)
recordCommander2.Set("elo_tournament", newData.Commander2_NewELO)
} else {
recordCommander1.Set("elo_casual", newData.Commander1_NewELO)
recordCommander2.Set("elo_casual", newData.Commander2_NewELO)
}
e.App.Save(recordPlayer1)
e.App.Save(recordPlayer2)
e.App.Save(recordCommander1)
e.App.Save(recordCommander2)
updateNextMatchs(e, newData, official)
return e.Next()
})
}
func updateNextMatchs(e *core.RecordEvent, newData DuelResult, official bool) {
needToRecalculateElo := false
nextMatchsCount, _ := e.App.CountRecords("elo", dbx.And(dbx.And(dbx.NewExp("date > {:date}", dbx.Params{"date": e.Record.GetString("date")}), dbx.NewExp("official = {:official}", dbx.Params{"official": official})),dbx.Or(dbx.NewExp("player_1 = {:id}", dbx.Params{"id": e.Record.GetString("player_1")}), dbx.NewExp("player_2 = {:id}", dbx.Params{"id": e.Record.GetString("player_1")}))))
if nextMatchsCount > 0 {
needToRecalculateElo = true
}
nextMatchsCount, _ = e.App.CountRecords("elo", dbx.And(dbx.And(dbx.NewExp("date > {:date}", dbx.Params{"date": e.Record.GetString("date")}), dbx.NewExp("official = {:official}", dbx.Params{"official": official})),dbx.Or(dbx.NewExp("player_1 = {:id}", dbx.Params{"id": e.Record.GetString("player_2")}), dbx.NewExp("player_2 = {:id}", dbx.Params{"id": e.Record.GetString("player_2")}))))
if nextMatchsCount > 0 {
needToRecalculateElo = true
}
nextMatchsCount, _ = e.App.CountRecords("elo", dbx.And(dbx.And(dbx.NewExp("date > {:date}", dbx.Params{"date": e.Record.GetString("date")}), dbx.NewExp("official = {:official}", dbx.Params{"official": official})),dbx.Or(dbx.NewExp("commandant_1 = {:id}", dbx.Params{"id": e.Record.GetString("commandant_1")}), dbx.NewExp("commandant_2 = {:id}", dbx.Params{"id": e.Record.GetString("commandant_1")}))))
if nextMatchsCount > 0 {
needToRecalculateElo = true
}
nextMatchsCount, _ = e.App.CountRecords("elo", dbx.And(dbx.And(dbx.NewExp("date > {:date}", dbx.Params{"date": e.Record.GetString("date")}), dbx.NewExp("official = {:official}", dbx.Params{"official": official})),dbx.Or(dbx.NewExp("commandant_1 = {:id}", dbx.Params{"id": e.Record.GetString("commandant_2")}), dbx.NewExp("commandant_2 = {:id}", dbx.Params{"id": e.Record.GetString("commandant_2")}))))
if nextMatchsCount > 0 {
needToRecalculateElo = true
}
if needToRecalculateElo {
eloMatchs := []Elo{}
log.Println(fmt.Sprintf("Matchs found after %s", e.Record.GetString("id")))
playerIdChanged := []string{ e.Record.GetString("player_1"), e.Record.GetString("player_2") }
newPlayerData := map[string]float64{}
newPlayerData[e.Record.GetString("player_1")] = newData.Player1_NewELO
newPlayerData[e.Record.GetString("player_2")] = newData.Player2_NewELO
newCommanderData := map[string]float64{}
newCommanderData[e.Record.GetString("commandant_1")] = newData.Commander1_NewELO
newCommanderData[e.Record.GetString("commandant_2")] = newData.Commander2_NewELO
commanderIdChanged := []string{ e.Record.GetString("commandant_1"), e.Record.GetString("commandant_2") }
err := e.App.RecordQuery("elo").
Where(dbx.NewExp("date > {:date}", dbx.Params{"date":e.Record.GetString("date")})).
AndWhere(dbx.NewExp("official = {:official}",dbx.Params{"official": official})).
OrderBy("date ASC").
All(&eloMatchs)
if err != nil {
log.Println(err)
}
for _, v := range eloMatchs {
// Check if Match is concerned by the ELO recalculate
if slices.Contains(playerIdChanged, v.Player1) || slices.Contains(playerIdChanged, v.Player2) {
record, _ := e.App.FindRecordById("elo", v.ID)
// If Player1 is not in the ID changed, now it is
if !slices.Contains(playerIdChanged, v.Player1) {
playerIdChanged = append(playerIdChanged, v.Player1)
} else {
record.Set("last_elo_player_1", newPlayerData[v.Player1])
}
// If Player2 is not in the ID changed, now it is
if !slices.Contains(playerIdChanged, v.Player2) {
playerIdChanged = append(playerIdChanged, v.Player2)
} else {
record.Set("last_elo_player_2", newPlayerData[v.Player2])
}
tempEloData := CalculateELO(record.GetFloat("last_elo_player_1"), record.GetFloat("last_elo_player_2"), record.GetFloat("last_elo_commandant_1"), record.GetFloat("last_elo_commandant_2"), record.GetInt("score_1"), record.GetInt("score_2"))
record.Set("elo_player_1", tempEloData.Player1_NewELO)
record.Set("elo_player_2", tempEloData.Player2_NewELO)
newPlayerData[v.Player1] = tempEloData.Player1_NewELO
newPlayerData[v.Player2] = tempEloData.Player2_NewELO
e.App.Save(record)
}
if slices.Contains(commanderIdChanged, v.Commander1) || slices.Contains(commanderIdChanged, v.Commander2) {
record, _ := e.App.FindRecordById("elo", v.ID)
// If Player1 is not in the ID changed, now it is
if !slices.Contains(commanderIdChanged, v.Commander1) {
commanderIdChanged = append(commanderIdChanged, v.Commander1)
} else {
record.Set("last_elo_commandant_1", newCommanderData[v.Commander1])
}
// If Player2 is not in the ID changed, now it is
if !slices.Contains(commanderIdChanged, v.Commander2) {
commanderIdChanged = append(commanderIdChanged, v.Commander2)
} else {
record.Set("last_elo_commandant_2", newCommanderData[v.Commander2])
}
tempEloData := CalculateELO(record.GetFloat("last_elo_player_1"), record.GetFloat("last_elo_player_2"), record.GetFloat("last_elo_commandant_1"), record.GetFloat("last_elo_commandant_2"), record.GetInt("score_1"), record.GetInt("score_2"))
record.Set("elo_commandant_1", tempEloData.Commander1_NewELO)
record.Set("elo_commandant_2", tempEloData.Commander2_NewELO)
newCommanderData[v.Commander1] = tempEloData.Commander1_NewELO
newCommanderData[v.Commander2] = tempEloData.Commander2_NewELO
e.App.Save(record)
}
}
recordPlayer1, _ := e.App.FindRecordById("elo_player", e.Record.GetString("player_1"))
recordPlayer2, _ := e.App.FindRecordById("elo_player", e.Record.GetString("player_2"))
if official {
recordPlayer1.Set("elo_tournament", newPlayerData[e.Record.GetString("player_1")])
recordPlayer2.Set("elo_tournament", newPlayerData[e.Record.GetString("player_2")])
} else {
recordPlayer1.Set("elo_casual", newPlayerData[e.Record.GetString("player_1")])
recordPlayer2.Set("elo_casual", newPlayerData[e.Record.GetString("player_2")])
}
recordCommander1, _ := e.App.FindRecordById("carte", e.Record.GetString("commandant_1"))
recordCommander2, _ := e.App.FindRecordById("carte", e.Record.GetString("commandant_2"))
if official {
recordCommander1.Set("elo_tournament", newCommanderData[e.Record.GetString("commandant_1")])
recordCommander2.Set("elo_tournament", newCommanderData[e.Record.GetString("commandant_2")])
} else {
recordCommander1.Set("elo_casual", newCommanderData[e.Record.GetString("commandant_1")])
recordCommander2.Set("elo_casual", newCommanderData[e.Record.GetString("commandant_2")])
}
e.App.Save(recordPlayer1)
e.App.Save(recordPlayer2)
e.App.Save(recordCommander1)
e.App.Save(recordCommander2)
}
}
func updateEloPlayerWithLastMatch(e *core.RecordEvent, playerId string, date string, elo *float64, official bool) {
lastMatch := Elo{}
err := e.App.RecordQuery("elo").
Where(dbx.NewExp("date < {:date}", dbx.Params{"date": date})).
AndWhere(dbx.NewExp("official = {:official}", dbx.Params{"official": official})).
AndWhere(dbx.Or(dbx.NewExp("player_1 = {:id}", dbx.Params{"id": playerId}), dbx.NewExp("player_2 = {:id}", dbx.Params{"id": playerId}))).
OrderBy("date DESC").
One(&lastMatch)
if err == nil {
// If a match exists before this one update ELO
if lastMatch.Player1 == playerId {
*elo = lastMatch.EloPlayer1
} else {
*elo = lastMatch.EloPlayer2
}
}
}
func updateEloCommanderWithLastMatch(e *core.RecordEvent, commanderId string, date string, elo *float64, official bool) {
lastMatch := Elo{}
err := e.App.RecordQuery("elo").
Where(dbx.NewExp("date < {:date}", dbx.Params{"date": date})).
AndWhere(dbx.NewExp("official = {:official}", dbx.Params{"official": official})).
AndWhere(dbx.Or(dbx.NewExp("commandant_1 = {:id}", dbx.Params{"id": commanderId}), dbx.NewExp("commandant_2 = {:id}", dbx.Params{"id": commanderId}))).
OrderBy("date DESC").
One(&lastMatch)
if err == nil {
// If a match exists before this one update ELO
if lastMatch.Commander1 == commanderId {
*elo = lastMatch.EloCommander1
} else {
*elo = lastMatch.EloCommander2
}
}
}
func CalculateELO(player1_ELO float64, player2_ELO float64, commander1_ELO float64, commander2_ELO float64, score1 int, score2 int) DuelResult {
K_PLAYER := 30.0
K_COMMANDER := 20.0
won_player1 := 0.0
won_player2 := 0.0
if score1 < score2 {
won_player2 = 1.0
} else if score1 > score2 {
won_player1 = 1.0
} else if score1 == score2 {
won_player1 = 0.5
won_player2 = 0.5
}
eloModifier_player1 := won_player1 - 1.0 / (1 + math.Pow(10, (player2_ELO - player1_ELO) / 400.0))
eloModifier_player2 := won_player2 - 1.0 / (1 + math.Pow(10, (player1_ELO - player2_ELO) / 400.0))
eloModifier_commander1 := won_player1 - 1.0 / (1 + math.Pow(10, (commander2_ELO - commander1_ELO) / 400.0))
eloModifier_commander2 := won_player2 - 1.0 / (1 + math.Pow(10, (commander1_ELO - commander2_ELO) / 400.0))
return DuelResult{
Player1_NewELO: player1_ELO + K_PLAYER * eloModifier_player1,
Player2_NewELO: player2_ELO + K_PLAYER * eloModifier_player2,
Commander1_NewELO: commander1_ELO + K_COMMANDER * eloModifier_commander1,
Commander2_NewELO: commander2_ELO + K_COMMANDER * eloModifier_commander2,
}
}

View file

@ -44,6 +44,7 @@ func main() {
app.SetupCache()
app.SetupCrons()
app.SetupRoutes()
app.SetupHooks()
log.Fatal(app.pb.Start())
}

View file

@ -0,0 +1,578 @@
package migrations
import (
"github.com/pocketbase/pocketbase/core"
m "github.com/pocketbase/pocketbase/migrations"
)
func init() {
m.Register(func(app core.App) error {
jsonData := `[
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"createRule": null,
"updateRule": null,
"deleteRule": null,
"name": "elo",
"type": "base",
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},
{
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},
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},
{
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"hidden": false,
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},
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},
{
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},
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},
{
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},
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"onlyInt": false,
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},
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"id": "autodate3332085495",
"name": "updated",
"onCreate": true,
"onUpdate": true,
"presentable": false,
"system": false,
"type": "autodate"
}
],
"indexes": [],
"system": false
},
{
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"updateRule": null,
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"name": "elo_player",
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{
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"hidden": false,
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}
],
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},
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"type": "base",
"fields": [
{
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"name": "id",
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"type": "text"
},
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},
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},
{
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"required": false,
"system": false,
"type": "url"
},
{
"exceptDomains": null,
"hidden": false,
"id": "url2961008824",
"name": "normal_image_back",
"onlyDomains": null,
"presentable": false,
"required": false,
"system": false,
"type": "url"
},
{
"autogeneratePattern": "",
"hidden": false,
"id": "text2363381545",
"max": 0,
"min": 0,
"name": "type",
"pattern": "",
"presentable": false,
"primaryKey": false,
"required": false,
"system": false,
"type": "text"
},
{
"hidden": false,
"id": "select3054531206",
"maxSelect": 5,
"name": "color_identity",
"presentable": false,
"required": false,
"system": false,
"type": "select",
"values": [
"B",
"W",
"R",
"G",
"U"
]
},
{
"hidden": false,
"id": "date3520360348",
"max": "",
"min": "",
"name": "released_at",
"presentable": false,
"required": false,
"system": false,
"type": "date"
},
{
"cascadeDelete": false,
"collectionId": "pbc_3912384429",
"hidden": false,
"id": "relation3860080092",
"maxSelect": 1,
"minSelect": 0,
"name": "mtg_set",
"presentable": false,
"required": false,
"system": false,
"type": "relation"
},
{
"autogeneratePattern": "",
"hidden": false,
"id": "text3805467153",
"max": 0,
"min": 0,
"name": "set_code",
"pattern": "",
"presentable": true,
"primaryKey": false,
"required": false,
"system": false,
"type": "text"
},
{
"hidden": false,
"id": "number3402113753",
"max": null,
"min": null,
"name": "price",
"onlyInt": false,
"presentable": false,
"required": false,
"system": false,
"type": "number"
},
{
"exceptDomains": null,
"hidden": false,
"id": "url518645060",
"name": "cardmarket_url",
"onlyDomains": null,
"presentable": false,
"required": false,
"system": false,
"type": "url"
},
{
"hidden": false,
"id": "bool1734659578",
"name": "can_be_commander",
"presentable": false,
"required": false,
"system": false,
"type": "bool"
},
{
"hidden": false,
"id": "bool2605256118",
"name": "banned",
"presentable": false,
"required": false,
"system": false,
"type": "bool"
},
{
"hidden": false,
"id": "number2334461934",
"max": null,
"min": null,
"name": "elo_casual",
"onlyInt": false,
"presentable": false,
"required": false,
"system": false,
"type": "number"
},
{
"hidden": false,
"id": "number2732192018",
"max": null,
"min": null,
"name": "elo_tournament",
"onlyInt": false,
"presentable": false,
"required": false,
"system": false,
"type": "number"
}
],
"indexes": [],
"system": false
}
]`
// add up queries...
return app.ImportCollectionsByMarshaledJSON([]byte(jsonData), false)
}, func(app core.App) error {
// add down queries...
return nil
})
}

View file

@ -55,3 +55,27 @@ type Deck struct {
Brawlset string `db:"brawlset" json:"brawslet,omitempty"`
Cards types.JSONArray[DeckCard] `db:"cartes" json:"cartes,omitempty"`
}
type Elo struct {
ID string `db:"id" json:"id"`
Date string `db:"date" json:"date"`
Player1 string `db:"player_1" json:"player_1"`
Player2 string `db:"player_2" json:"player_2"`
Commander1 string `db:"commander_1" json:"commander_1"`
Commander2 string `db:"commander_2" json:"commander_2"`
Score1 int `db:"score_1" json:"score_1"`
Score2 int `db:"score_2" json:"score_2"`
Official bool `db:"official" json:"official"`
EloCommander1 float64 `db:"elo_commandant_1" json:"elo_commander_1"`
EloCommander2 float64 `db:"elo_commandant_2" json:"elo_commander_2"`
EloPlayer1 float64 `db:"elo_player_1" json:"elo_player_1"`
EloPlayer2 float64 `db:"elo_player_2" json:"elo_player_2"`
}
type EloPlayer struct {
ID string `db:"id" json:"id"`
User string `db:"user" json:"user"`
Username string `db:"username" json:"username"`
EloCasual float64 `db:"elo_casual" json:"elo_casual"`
EloTournament float64 `db:"elo_tournament" json:"elo_tournament"`
}