add sqlc and sqlite

backend/internal/db/connect.go

@@ -0,0 +1,33 @@
+package db
+
+import (
+	"database/sql"
+	"fmt"
+	"os"
+
+	_ "modernc.org/sqlite"
+)
+
+const driver = "sqlite"
+
+func Connect() (*sql.DB, error) {
+	path := os.Getenv("DB_PATH")
+	if path == "" {
+		path = "vaultdrop.db"
+	}
+
+	dsn := fmt.Sprintf("file:%s?_journal_mode=WAL&_busy_timeout=5000&_foreign_keys=on", path)
+
+	database, err := sql.Open(driver, dsn)
+	if err != nil {
+		return nil, fmt.Errorf("open db: %w", err)
+	}
+
+	database.SetMaxOpenConns(1)
+
+	if err := database.Ping(); err != nil {
+		return nil, fmt.Errorf("ping db: %w", err)
+	}
+
+	return database, nil
+}

backend/internal/db/db.go

@@ -0,0 +1,31 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.31.1
+
+package db
+
+import (
+	"context"
+	"database/sql"
+)
+
+type DBTX interface {
+	ExecContext(context.Context, string, ...interface{}) (sql.Result, error)
+	PrepareContext(context.Context, string) (*sql.Stmt, error)
+	QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
+	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func (q *Queries) WithTx(tx *sql.Tx) *Queries {
+	return &Queries{
+		db: tx,
+	}
+}

backend/internal/db/migrations/schema.sql

@@ -0,0 +1,4 @@
+-- VaultDrop Schema
+-- Tables will be added here as the project evolves.
+
+SELECT 1;

backend/internal/db/models.go

@@ -0,0 +1,5 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.31.1
+
+package db

backend/internal/db/placeholder.sql.go

@@ -0,0 +1,21 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.31.1
+// source: placeholder.sql
+
+package db
+
+import (
+	"context"
+)
+
+const getHealth = `-- name: GetHealth :one
+SELECT 1 AS ok
+`
+
+func (q *Queries) GetHealth(ctx context.Context) (int64, error) {
+	row := q.db.QueryRowContext(ctx, getHealth)
+	var ok int64
+	err := row.Scan(&ok)
+	return ok, err
+}

backend/internal/db/queries/placeholder.sql

@@ -0,0 +1,2 @@
+-- name: GetHealth :one
+SELECT 1 AS ok;