From bda1ba8324015dcc14b5a0fb8c4f85ab979da1ab Mon Sep 17 00:00:00 2001
From: Drew Bednar <drew@runcible.io>
Date: Sat, 18 Jan 2025 15:27:05 -0500
Subject: [PATCH] Adding sqlite3 migrate and make utility commands

---
 .gitignore                      |  7 ++++++-
 Makefile                        | 26 +++++++++++++++++++++++++-
 README.md                       |  6 +++++-
 go.mod                          |  2 ++
 go.sum                          |  2 ++
 migrations/10_snippets.down.sql |  1 +
 migrations/10_snippets.up.sql   | 20 ++++++++++++++++++++
 7 files changed, 61 insertions(+), 3 deletions(-)
 create mode 100644 migrations/10_snippets.down.sql
 create mode 100644 migrations/10_snippets.up.sql

diff --git a/.gitignore b/.gitignore
index 26ef082..3a2321a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,4 +21,9 @@
 # Go workspace file
 go.work
 
-tmp/
\ No newline at end of file
+tmp/
+
+# Sqlite
+*.db
+*.db-shm
+*.db-wal
diff --git a/Makefile b/Makefile
index 7070b2d..ceb0eb3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,31 @@
+SQL_DATABASE?=./ratchet.db
+
 test:
 	go test -v ./...
 PHONEY: test
 
 serve:
 	go run ./cmd/ratchetd/main.go
-PHONEY: serve
\ No newline at end of file
+PHONEY: serve
+
+
+# SQLite Commands
+
+sql-cli:
+	sqlite3 $(SQL_DATABASE) -cmd ".headers on" -cmd ".mode column" -cmd ".tables"
+
+init-db: run-migrate
+	sqlite3 $(SQL_DATABASE) "PRAGMA journal_mode = WAL; PRAGMA synchronous = NORMAL;"
+
+seed-db:
+	sqlite3 $(SQL_DATABASE) "INSERT INTO snippets (title, content, expires_at) VALUES ('placeholder', 'placeholder content', datetime('now', '+6 months'));"
+
+run-migrate:
+	migrate -database sqlite3://$(SQL_DATABASE) -path ./migrations up
+
+# Checks system dependencies needed to run the local dev environment
+check-system-deps:
+	@echo "Checking system dependencies..."
+	@command -v sqlite3 > /dev/null || (echo "Missing sqlite3 command. brew install sqlite"; exit 1)
+	@command -v migrate > /dev/null || (echo "Missing migrate command. go install -tags 'sqlite3' github.com/golang-migrate/migrate/v4/cmd/migrate@latest"; exit 1)
+	@echo "System dependencies fulfilled 👍"
\ No newline at end of file
diff --git a/README.md b/README.md
index f995bd6..a3e6226 100644
--- a/README.md
+++ b/README.md
@@ -84,4 +84,8 @@ func downloadHandler(w http.ResponseWriter, r *http.Request) {
 }
 ```
 
-Warning: http.ServeFile() does not automatically sanitize the file path. If you’re constructing a file path from untrusted user input, to avoid directory traversal attacks you must sanitize the input with filepath.Clean() before using it. 
\ No newline at end of file
+Warning: http.ServeFile() does not automatically sanitize the file path. If you’re constructing a file path from untrusted user input, to avoid directory traversal attacks you must sanitize the input with filepath.Clean() before using it. 
+
+## Databases
+
+The Let's-go book calls for MySQL. We use [go-sqlite3](ggithub.com/mattn/go-sqlite3) and [go-migrate]() tool to manage migrations instead. Use `make check-system-deps` to validate all tools for this repository are installed.
diff --git a/go.mod b/go.mod
index f5929ae..6c5902a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,5 @@
 module git.runcible.io/learning/ratchet
 
 go 1.23.3
+
+require github.com/mattn/go-sqlite3 v1.14.24 // indirect
diff --git a/go.sum b/go.sum
index e69de29..9dcdc9b 100644
--- a/go.sum
+++ b/go.sum
@@ -0,0 +1,2 @@
+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=
diff --git a/migrations/10_snippets.down.sql b/migrations/10_snippets.down.sql
new file mode 100644
index 0000000..6c0a277
--- /dev/null
+++ b/migrations/10_snippets.down.sql
@@ -0,0 +1 @@
+DROP TABLE IF EXISTS snippets;
\ No newline at end of file
diff --git a/migrations/10_snippets.up.sql b/migrations/10_snippets.up.sql
new file mode 100644
index 0000000..be37e4a
--- /dev/null
+++ b/migrations/10_snippets.up.sql
@@ -0,0 +1,20 @@
+PRAGMA foreign_keys=1;
+CREATE TABLE snippets (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    title TEXT, 
+    content TEXT,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    expires_at DATETIME NOT NULL
+);
+
+-- Add an index on the created column.
+CREATE INDEX idx_snippets_created ON snippets(created_at);
+
+-- Add a trigger to keep timestamp updated.
+CREATE TRIGGER snippet_update_timestamp
+AFTER UPDATE ON snippets
+FOR EACH ROW
+BEGIN
+    UPDATE snippets SET updated_at = CURRENT_TIMESTAMP WHERE id = OLD.id;
+END;