Add cloud backend

.env.example

@@ -0,0 +1,11 @@
+# Game Security (Must match between frontend and backend)
+GAME_SECRET=
+VITE_GAME_SECRET=
+
+# Backend Config
+PORT=8080
+DB_PATH=game.db
+
+# Frontend Config
+VITE_API_URL=http://localhost:8080/api
+VITE_GA_ID=

.gitignore

@@ -22,4 +22,12 @@ dist-ssr
 *.njsproj
 *.sln
 *.sw?
-package-lock.json
+package-lock.json
+
+*.db
+*.db-shm
+*.db-wal
+
+.env
+.env.local
+.env.*.local

backend/Makefile

@@ -0,0 +1,19 @@
+# Makefile for Rick Stack Backend
+
+BUILD_DIR=bin
+BINARY_NAME=rick-server
+
+build:
+	go build -o $(BUILD_DIR)/$(BINARY_NAME) main.go
+
+run:
+	go run main.go
+
+test:
+	go test ./...
+
+clean:
+	rm -rf $(BUILD_DIR)
+	rm -f game.db game.db-shm game.db-wal
+
+all: build

backend/database/db.go

@@ -0,0 +1,111 @@
+package database
+
+import (
+	"database/sql"
+	_ "modernc.org/sqlite"
+	"log"
+	"time"
+)
+
+var DB *sql.DB
+
+func InitDB(dbPath string) (*sql.DB, error) {
+	db, err := sql.Open("sqlite", dbPath)
+	if err != nil {
+		return nil, err
+	}
+
+	// Enable WAL mode for performance
+	if _, err := db.Exec("PRAGMA journal_mode=WAL;"); err != nil {
+		log.Printf("failed to enable WAL: %v", err)
+	}
+
+	// Create tables
+	schema := `
+	CREATE TABLE IF NOT EXISTS players (
+		id TEXT PRIMARY KEY,
+		nickname TEXT DEFAULT 'Rick',
+		game_state BLOB,
+		seeds INTEGER GENERATED ALWAYS AS (json_extract(game_state, '$.seeds')) VIRTUAL,
+		max_dimension INTEGER GENERATED ALWAYS AS (json_extract(game_state, '$.maxDimensionLevel')) VIRTUAL,
+		inventory_count INTEGER GENERATED ALWAYS AS (json_array_length(json_extract(game_state, '$.inventory'))) VIRTUAL,
+		updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
+	);
+
+	CREATE INDEX IF NOT EXISTS idx_players_seeds ON players(seeds);
+	CREATE INDEX IF NOT EXISTS idx_players_max_dimension ON players(max_dimension);
+	CREATE INDEX IF NOT EXISTS idx_players_inventory_count ON players(inventory_count);
+	`
+	_, err = db.Exec(schema)
+	if err != nil {
+		return nil, err
+	}
+
+	DB = db
+	return db, nil
+}
+
+func SavePlayer(id string, nickname string, gameStateJSON []byte) error {
+	_, err := DB.Exec(`
+		INSERT INTO players (id, nickname, game_state, updated_at) 
+		VALUES (?, ?, jsonb(?), CURRENT_TIMESTAMP)
+		ON CONFLICT(id) DO UPDATE SET 
+			nickname=?,
+			game_state=jsonb(?), 
+			updated_at=CURRENT_TIMESTAMP
+	`, id, nickname, gameStateJSON, nickname, gameStateJSON)
+	return err
+}
+
+func GetPlayer(id string) (string, []byte, time.Time, error) {
+	var playerId string
+	var gameState []byte
+	var updatedAt time.Time
+	err := DB.QueryRow("SELECT id, json(game_state), updated_at FROM players WHERE id = ?", id).Scan(&playerId, &gameState, &updatedAt)
+	if err != nil {
+		return "", nil, time.Time{}, err
+	}
+	return playerId, gameState, updatedAt, nil
+}
+
+type LeaderboardEntry struct {
+	ID       string `json:"id"`
+	Nickname string `json:"nickname"`
+	Value    int64  `json:"value"`
+}
+
+func GetLeaderboard(category string, limit int) ([]LeaderboardEntry, error) {
+	var query string
+	switch category {
+	case "seeds":
+		query = "SELECT id, nickname, seeds FROM players ORDER BY seeds DESC LIMIT ?"
+	case "dimension":
+		query = "SELECT id, nickname, max_dimension FROM players ORDER BY max_dimension DESC LIMIT ?"
+	case "inventory":
+		query = "SELECT id, nickname, inventory_count FROM players ORDER BY inventory_count DESC LIMIT ?"
+	case "discovery":
+		query = `
+			SELECT id, nickname, (SELECT count(*) FROM json_each(json_extract(game_state, '$.discoveredCards'))) as discovery_count 
+			FROM players 
+			ORDER BY discovery_count DESC 
+			LIMIT ?`
+	default:
+		query = "SELECT id, nickname, seeds FROM players ORDER BY seeds DESC LIMIT ?"
+	}
+
+	rows, err := DB.Query(query, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var entries []LeaderboardEntry
+	for rows.Next() {
+		var e LeaderboardEntry
+		if err := rows.Scan(&e.ID, &e.Nickname, &e.Value); err != nil {
+			return nil, err
+		}
+		entries = append(entries, e)
+	}
+	return entries, nil
+}

backend/game/logic.go

@@ -0,0 +1,48 @@
+package game
+
+import (
+	"backend/models"
+	"fmt"
+	"time"
+)
+
+// Constants for logical verification
+const (
+	MaxSeedsPerSecond   = 500.0 // Adjusted for "Seeds"
+	MaxNewCardsPerSave  = 200
+)
+
+func ValidateProgress(oldState *models.GameState, newState *models.GameState, lastUpdate time.Time) error {
+	// If no old state, it's a new player.
+	if oldState == nil {
+		return nil
+	}
+
+	deltaSeconds := time.Since(lastUpdate).Seconds()
+	if deltaSeconds < 0 {
+		return fmt.Errorf("invalid time delta")
+	}
+
+	// 1. Seeds Verification
+	seedsDiff := newState.Seeds - oldState.Seeds
+	if seedsDiff > 0 {
+		// Calculate max possible based on some game logic
+		maxPossibleSeeds := (MaxSeedsPerSecond * deltaSeconds) + float64(newState.MaxDimensionLevel*1000)
+		if float64(seedsDiff) > maxPossibleSeeds {
+			return fmt.Errorf("impossible seeds gain: %d in %.1fs", seedsDiff, deltaSeconds)
+		}
+	}
+
+	// 2. Inventory Count Verification
+	inventoryDiff := len(newState.Inventory) - len(oldState.Inventory)
+	if inventoryDiff > MaxNewCardsPerSave {
+		return fmt.Errorf("impossible inventory growth: %d", inventoryDiff)
+	}
+
+	// 3. Dimension Level check
+	if newState.MaxDimensionLevel < oldState.MaxDimensionLevel {
+		return fmt.Errorf("max dimension level cannot decrease")
+	}
+
+	return nil
+}

backend/go.mod

@@ -0,0 +1,21 @@
+module backend
+
+go 1.25.4
+
+require (
+	github.com/go-chi/chi/v5 v5.2.5
+	github.com/go-chi/cors v1.2.2
+	modernc.org/sqlite v1.47.0
+)
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/sys v0.42.0 // indirect
+	modernc.org/libc v1.70.0 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
+)

backend/go.sum

@@ -0,0 +1,55 @@
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