From bdaa5aa59bd7cfe54e6c40cb5080af0bde4f8e03 Mon Sep 17 00:00:00 2001
From: Dennis Schoepf <me@dnsc.io>
Date: Fri, 26 Apr 2024 22:46:14 +0200
Subject: [PATCH] Sets up sqlc

---
 database/db.go                    | 31 +++++++++++++++++++++++
 database/migrations/1_initial.sql |  9 +++++++
 database/models.go                | 11 +++++++++
 database/queries/users.sql        |  2 ++
 database/repository.go            | 41 +++++++++++++++++++++++++++++++
 database/users.sql.go             | 37 ++++++++++++++++++++++++++++
 6 files changed, 131 insertions(+)
 create mode 100644 database/db.go
 create mode 100644 database/migrations/1_initial.sql
 create mode 100644 database/models.go
 create mode 100644 database/queries/users.sql
 create mode 100644 database/repository.go
 create mode 100644 database/users.sql.go

diff --git a/database/db.go b/database/db.go
new file mode 100644
index 0000000..a3cc795
--- /dev/null
+++ b/database/db.go
@@ -0,0 +1,31 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.26.0
+
+package database
+
+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,
+	}
+}
diff --git a/database/migrations/1_initial.sql b/database/migrations/1_initial.sql
new file mode 100644
index 0000000..e50fa0c
--- /dev/null
+++ b/database/migrations/1_initial.sql
@@ -0,0 +1,9 @@
+-- +migrate Up
+CREATE table users (
+  id INTEGER PRIMARY KEY,
+  first_name text NOT NULL,
+  email text NOT NULL
+);
+
+-- +migrate Down
+DROP TABLE users;
diff --git a/database/models.go b/database/models.go
new file mode 100644
index 0000000..5520ca5
--- /dev/null
+++ b/database/models.go
@@ -0,0 +1,11 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.26.0
+
+package database
+
+type User struct {
+	ID        int64
+	FirstName string
+	Email     string
+}
diff --git a/database/queries/users.sql b/database/queries/users.sql
new file mode 100644
index 0000000..dba5df7
--- /dev/null
+++ b/database/queries/users.sql
@@ -0,0 +1,2 @@
+-- name: ListUsers :many
+SELECT * FROM users;
diff --git a/database/repository.go b/database/repository.go
new file mode 100644
index 0000000..ecf5e17
--- /dev/null
+++ b/database/repository.go
@@ -0,0 +1,41 @@
+package database
+
+import (
+	"database/sql"
+	"embed"
+	"fmt"
+
+	_ "github.com/mattn/go-sqlite3"
+	migrate "github.com/rubenv/sql-migrate"
+)
+
+type Repository struct {
+	queries *Queries
+	db      *sql.DB
+}
+
+//go:embed migrations/*
+var dbMigrations embed.FS
+
+func NewRepository(filename string) (*Repository, error) {
+	db, err := sql.Open("sqlite3", filename)
+
+	if err != nil {
+		return nil, err
+	}
+
+	migrations := migrate.EmbedFileSystemMigrationSource{
+		FileSystem: dbMigrations,
+		Root:       "migrations",
+	}
+
+	n, err := migrate.Exec(db, "sqlite3", migrations, migrate.Up)
+
+	if err != nil {
+		return nil, err
+	}
+
+	fmt.Printf("Applied %d migrations - Database is ready!\n", n)
+
+	return &Repository{queries: New(db), db: db}, nil
+}
diff --git a/database/users.sql.go b/database/users.sql.go
new file mode 100644
index 0000000..6f2b23b
--- /dev/null
+++ b/database/users.sql.go
@@ -0,0 +1,37 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.26.0
+// source: users.sql
+
+package database
+
+import (
+	"context"
+)
+
+const listAuthors = `-- name: ListAuthors :many
+SELECT id, first_name, email FROM users
+`
+
+func (q *Queries) ListAuthors(ctx context.Context) ([]User, error) {
+	rows, err := q.db.QueryContext(ctx, listAuthors)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []User
+	for rows.Next() {
+		var i User
+		if err := rows.Scan(&i.ID, &i.FirstName, &i.Email); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}