@@ -0,0 +1,46 @@ 
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+  args_bin = []
+  bin = "./main"
+  cmd = "make build"
+  delay = 1000
+  exclude_dir = ["assets", "tmp", "vendor", "testdata"]
+  exclude_file = []
+  exclude_regex = ["_test.go"]
+  exclude_unchanged = false
+  follow_symlink = false
+  full_bin = ""
+  include_dir = []
+  include_ext = ["go", "tpl", "tmpl", "html"]
+  include_file = []
+  kill_delay = "0s"
+  log = "build-errors.log"
+  poll = false
+  poll_interval = 0
+  post_cmd = []
+  pre_cmd = []
+  rerun = false
+  rerun_delay = 500
+  send_interrupt = false
+  stop_on_error = false
+
+[color]
+  app = ""
+  build = "yellow"
+  main = "magenta"
+  runner = "green"
+  watcher = "cyan"
+
+[log]
+  main_only = false
+  time = false
+
+[misc]
+  clean_on_exit = false
+
+[screen]
+  clear_on_rebuild = false
+  keep_scroll = true

@@ -0,0 +1,33 @@ 
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with "go test -c"
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+tmp/
+
+# IDE specific files
+.vscode
+.idea
+
+# .env file
+.env
+
+# Project build
+main
+*templ.go
+
+# OS X generated file
+.DS_Store

@@ -0,0 +1,32 @@ 
+# Build the application
+build:
+	@echo "Building..."
+	@go build -o main cmd/api/main.go
+
+# Run the application
+run:
+	@go run cmd/api/main.go
+
+# Clean the binary
+clean:
+	@echo "Cleaning..."
+	@rm -f main
+
+# Live Reload
+watch:
+	@if command -v air > /dev/null; then \
+            air; \
+            echo "Watching...";\
+        else \
+            read -p "Go's 'air' is not installed on your machine. Do you want to install it? [Y/n] " choice; \
+            if [ "$$choice" != "n" ] && [ "$$choice" != "N" ]; then \
+                go install github.com/air-verse/air@latest; \
+                air; \
+                echo "Watching...";\
+            else \
+                echo "You chose not to install air. Exiting..."; \
+                exit 1; \
+            fi; \
+        fi
+
+.PHONY: build run clean watch

@@ -0,0 +1,48 @@ 
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"core/internal/server"
+)
+
+func main() {
+	server := server.NewServer()
+
+	done := make(chan bool, 1)
+
+	go gracefulShutdown(server, done)
+
+	err := server.ListenAndServe()
+	if err != nil && err != http.ErrServerClosed {
+		panic(fmt.Sprintf("http server error: %s", err))
+	}
+
+	<-done
+	log.Println("Graceful shutdown complete.")
+}
+
+func gracefulShutdown(apiServer *http.Server, done chan bool) {
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
+	<-ctx.Done()
+
+	log.Println("shutting down gracefully, press Ctrl+C again to force")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := apiServer.Shutdown(ctx); err != nil {
+		log.Printf("Server forced to shutdown with error: %v", err)
+	}
+
+	log.Println("Server exiting")
+
+	done <- true
+}

@@ -0,0 +1,22 @@ 
+module core
+
+go 1.23.0
+
+require (
+	github.com/go-chi/chi/v5 v5.1.0
+	github.com/go-webauthn/webauthn v0.11.2
+	github.com/joho/godotenv v1.5.1
+	github.com/mattn/go-sqlite3 v1.14.24
+)
+
+require (
+	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
+	github.com/go-webauthn/x v0.1.14 // indirect
+	github.com/golang-jwt/jwt/v5 v5.2.1 // indirect
+	github.com/google/go-tpm v0.9.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
+	golang.org/x/crypto v0.26.0 // indirect
+	golang.org/x/sys v0.23.0 // indirect
+)

@@ -0,0 +1,34 @@ 
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fxamacker/cbor/v2 v2.7.0 h1:iM5WgngdRBanHcxugY4JySA0nk1wZorNOpTgCMedv5E=
+github.com/fxamacker/cbor/v2 v2.7.0/go.mod h1:pxXPTn3joSm21Gbwsv0w9OSA2y1HFR9qXEeXQVeNoDQ=
+github.com/go-chi/chi/v5 v5.1.0 h1:acVI1TYaD+hhedDJ3r54HyA6sExp3HfXq7QWEEY/xMw=
+github.com/go-chi/chi/v5 v5.1.0/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
+github.com/go-webauthn/webauthn v0.11.2 h1:Fgx0/wlmkClTKlnOsdOQ+K5HcHDsDcYIvtYmfhEOSUc=
+github.com/go-webauthn/webauthn v0.11.2/go.mod h1:aOtudaF94pM71g3jRwTYYwQTG1KyTILTcZqN1srkmD0=
+github.com/go-webauthn/x v0.1.14 h1:1wrB8jzXAofojJPAaRxnZhRgagvLGnLjhCAwg3kTpT0=
+github.com/go-webauthn/x v0.1.14/go.mod h1:UuVvFZ8/NbOnkDz3y1NaxtUN87pmtpC1PQ+/5BBQRdc=
+github.com/golang-jwt/jwt/v5 v5.2.1 h1:OuVbFODueb089Lh128TAcimifWaLhJwVflnrgM17wHk=
+github.com/golang-jwt/jwt/v5 v5.2.1/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
+github.com/google/go-tpm v0.9.1 h1:0pGc4X//bAlmZzMKf8iz6IsDo1nYTbYJ6FZN/rg4zdM=
+github.com/google/go-tpm v0.9.1/go.mod h1:h9jEsEECg7gtLis0upRBQU+GhYVH6jMjrFxI8u6bVUY=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/mattn/go-sqlite3 v1.14.24 h1:tpSp2G2KyMnnQu99ngJ47EIkWVmliIizyZBfPrBWDRM=
+github.com/mattn/go-sqlite3 v1.14.24/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
+github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcYsOfg=
+golang.org/x/crypto v0.26.0 h1:RrRspgV4mU+YwB4FYnuBoKsUapNIL5cohGAmSH3azsw=
+golang.org/x/crypto v0.26.0/go.mod h1:GY7jblb9wI+FOo5y8/S2oY4zWP07AkOJ4+jxCqdqn54=
+golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
+golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

@@ -0,0 +1,37 @@ 
+package database
+
+import (
+	"context"
+	"database/sql"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func (s *service) CreateTables(ctx context.Context) error {
+	return s.withTransaction(ctx, func(tx *sql.Tx) error {
+		_, err := tx.ExecContext(ctx, `CREATE TABLE IF NOT EXISTS users (
+			id TEXT PRIMARY KEY,
+			name TEXT NOT NULL,
+			display_name TEXT NOT NULL,
+			created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+		);`)
+		if err != nil {
+			return err
+		}
+
+		_, err = tx.ExecContext(ctx, `CREATE TABLE IF NOT EXISTS credentials (
+			id TEXT PRIMARY KEY,
+			user_id TEXT NOT NULL,
+			public_key BLOB NOT NULL,
+			credential_id BLOB NOT NULL,
+			sign_count INTEGER NOT NULL,
+			created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+			FOREIGN KEY (user_id) REFERENCES users(id)
+		);`)
+		if err != nil {
+			return err
+		}
+
+		return nil
+	})
+}

@@ -0,0 +1,44 @@ 
+package database
+
+import (
+	"database/sql"
+	"log"
+	"os"
+
+	_ "github.com/joho/godotenv/autoload"
+	_ "github.com/mattn/go-sqlite3"
+)
+
+type Service interface {
+	Close() error
+}
+
+type service struct {
+	db *sql.DB
+}
+
+var (
+	dburl      = os.Getenv("BLUEPRINT_DB_URL")
+	dbInstance *service
+)
+
+func New() Service {
+	if dbInstance != nil {
+		return dbInstance
+	}
+
+	db, err := sql.Open("sqlite3", dburl)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	dbInstance = &service{
+		db: db,
+	}
+	return dbInstance
+}
+
+func (s *service) Close() error {
+	log.Printf("Disconnected from database: %s", dburl)
+	return s.db.Close()
+}

@@ -0,0 +1,23 @@ 
+package database
+
+import (
+	"context"
+	"database/sql"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func (s *service) withTransaction(ctx context.Context, fn func(*sql.Tx) error) error {
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+
+	defer tx.Rollback()
+
+	if err := fn(tx); err != nil {
+		return err
+	}
+
+	return tx.Commit()
+}

@@ -0,0 +1,38 @@ 
+package server
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+)
+
+func (s *Server) RegisterRoutes() http.Handler {
+	r := chi.NewRouter()
+	r.Use(middleware.Logger)
+
+	r.Get("/", s.HelloWorldHandler)
+
+	r.Get("/health", s.healthHandler)
+
+	return r
+}
+
+func (s *Server) HelloWorldHandler(w http.ResponseWriter, r *http.Request) {
+	resp := make(map[string]string)
+	resp["message"] = "Hello World"
+
+	jsonResp, err := json.Marshal(resp)
+	if err != nil {
+		log.Fatalf("error handling JSON marshal. Err: %v", err)
+	}
+
+	_, _ = w.Write(jsonResp)
+}
+
+func (s *Server) healthHandler(w http.ResponseWriter, r *http.Request) {
+	jsonResp, _ := json.Marshal(s.db.Health())
+	_, _ = w.Write(jsonResp)
+}

@@ -0,0 +1,39 @@ 
+package server
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+	"strconv"
+	"time"
+
+	_ "github.com/joho/godotenv/autoload"
+
+	"core/internal/database"
+)
+
+type Server struct {
+	port int
+
+	db database.Service
+}
+
+func NewServer() *http.Server {
+	port, _ := strconv.Atoi(os.Getenv("PORT"))
+	NewServer := &Server{
+		port: port,
+
+		db: database.New(),
+	}
+
+	// Declare Server config
+	server := &http.Server{
+		Addr:         fmt.Sprintf(":%d", NewServer.port),
+		Handler:      NewServer.RegisterRoutes(),
+		IdleTimeout:  time.Minute,
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 30 * time.Second,
+	}
+
+	return server
+}