From aaa1eff0fe33c97bd66f72834ca922b5204f0471 Mon Sep 17 00:00:00 2001
From: Vojtech Mares <vojtech@mares.cz>
Date: Thu, 10 Oct 2024 21:29:55 +0200
Subject: [PATCH] feat: add database migrations and dockerfile for migrations

---
 build/package/migrations/Dockerfile  | 10 ++++++++++
 db/migrations/0001_training.down.sql |  5 +++++
 db/migrations/0001_training.up.sql   | 25 +++++++++++++++++++++++++
 3 files changed, 40 insertions(+)
 create mode 100644 build/package/migrations/Dockerfile
 create mode 100644 db/migrations/0001_training.down.sql
 create mode 100644 db/migrations/0001_training.up.sql

diff --git a/build/package/migrations/Dockerfile b/build/package/migrations/Dockerfile
new file mode 100644
index 0000000..bba0de9
--- /dev/null
+++ b/build/package/migrations/Dockerfile
@@ -0,0 +1,10 @@
+# syntax=docker/dockerfile:1
+FROM migrate/migrate:v4.17.1 AS migrate
+
+FROM alpine:3.20 AS runtime
+
+COPY --from=migrate /usr/local/bin/migrate /usr/local/bin/migrate
+
+COPY db/migrations/ /srv/migrations/
+
+CMD [ "ash" ]
diff --git a/db/migrations/0001_training.down.sql b/db/migrations/0001_training.down.sql
new file mode 100644
index 0000000..385b693
--- /dev/null
+++ b/db/migrations/0001_training.down.sql
@@ -0,0 +1,5 @@
+DROP TABLE IF EXISTS training.prices;
+
+DROP TABLE IF EXISTS training.trainings;
+
+DROP SCHEMA IF EXISTS training;
diff --git a/db/migrations/0001_training.up.sql b/db/migrations/0001_training.up.sql
new file mode 100644
index 0000000..6fccb12
--- /dev/null
+++ b/db/migrations/0001_training.up.sql
@@ -0,0 +1,25 @@
+BEGIN;
+
+CREATE SCHEMA IF NOT EXISTS training;
+
+CREATE TABLE IF NOT EXISTS training.trainings (
+                                                id          SERIAL PRIMARY KEY,
+                                                name        varchar(255) NOT NULL,
+                                                days        smallint NOT NULL,
+                                                published   boolean NOT NULL DEFAULT FALSE,
+                                                retired     boolean NOT NULL DEFAULT FALSE
+);
+
+CREATE TABLE IF NOT EXISTS training.prices (
+                                             training_id SERIAL REFERENCES training.trainings(id),
+                                             amount NUMERIC(10,4) NOT NULL,
+                                             currency VARCHAR(3) NOT NULL,
+                                             CONSTRAINT positive_amount CHECK (amount >= 0),
+                                             CONSTRAINT allowed_currencies CHECK (currency IN ('USD', 'EUR', 'CZK')),
+                                             type        VARCHAR(10) NOT NULL,
+                                             CHECK       (type IN ('OPEN', 'CORPORATE')),
+                                             PRIMARY KEY (training_id, currency, type) -- composite primary key
+);
+
+COMMIT;
+