From 93731a987e98f4497c0d78f8319ffd773b52b728 Mon Sep 17 00:00:00 2001
From: jc <46619361+juancwu@users.noreply.github.com>
Date: Mon, 22 Apr 2024 23:42:24 -0400
Subject: [PATCH] add db migrations

---
 migrations/20240423031756_create-projects-table.down.sql    | 1 +
 migrations/20240423031756_create-projects-table.up.sql      | 6 ++++++
 migrations/20240423032721_create-techs-table.down.sql       | 1 +
 migrations/20240423032721_create-techs-table.up.sql         | 5 +++++
 ...240423032933_create-projects-techs-lookup-table.down.sql | 1 +
 ...20240423032933_create-projects-techs-lookup-table.up.sql | 5 +++++
 6 files changed, 19 insertions(+)
 create mode 100644 migrations/20240423031756_create-projects-table.down.sql
 create mode 100644 migrations/20240423031756_create-projects-table.up.sql
 create mode 100644 migrations/20240423032721_create-techs-table.down.sql
 create mode 100644 migrations/20240423032721_create-techs-table.up.sql
 create mode 100644 migrations/20240423032933_create-projects-techs-lookup-table.down.sql
 create mode 100644 migrations/20240423032933_create-projects-techs-lookup-table.up.sql

diff --git a/migrations/20240423031756_create-projects-table.down.sql b/migrations/20240423031756_create-projects-table.down.sql
new file mode 100644
index 0000000..48a1f84
--- /dev/null
+++ b/migrations/20240423031756_create-projects-table.down.sql
@@ -0,0 +1 @@
+DROP TABLE projects;
diff --git a/migrations/20240423031756_create-projects-table.up.sql b/migrations/20240423031756_create-projects-table.up.sql
new file mode 100644
index 0000000..76cd3b9
--- /dev/null
+++ b/migrations/20240423031756_create-projects-table.up.sql
@@ -0,0 +1,6 @@
+CREATE TABLE projects (
+    id SERIAL PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    repository_url VARCHAR(255),
+    description VARCHAR(255) NOT NULL
+);
diff --git a/migrations/20240423032721_create-techs-table.down.sql b/migrations/20240423032721_create-techs-table.down.sql
new file mode 100644
index 0000000..5ce6ef8
--- /dev/null
+++ b/migrations/20240423032721_create-techs-table.down.sql
@@ -0,0 +1 @@
+DROP TABLE technologies;
diff --git a/migrations/20240423032721_create-techs-table.up.sql b/migrations/20240423032721_create-techs-table.up.sql
new file mode 100644
index 0000000..5263432
--- /dev/null
+++ b/migrations/20240423032721_create-techs-table.up.sql
@@ -0,0 +1,5 @@
+CREATE TABLE technologies (
+    id SERIAL PRIMARY KEY,
+    name VARCHAR(25) NOT NULL UNIQUE,
+    url TEXT NOT NULL
+);
diff --git a/migrations/20240423032933_create-projects-techs-lookup-table.down.sql b/migrations/20240423032933_create-projects-techs-lookup-table.down.sql
new file mode 100644
index 0000000..9bba15d
--- /dev/null
+++ b/migrations/20240423032933_create-projects-techs-lookup-table.down.sql
@@ -0,0 +1 @@
+DROP TABLE projects_technologies;
diff --git a/migrations/20240423032933_create-projects-techs-lookup-table.up.sql b/migrations/20240423032933_create-projects-techs-lookup-table.up.sql
new file mode 100644
index 0000000..50e54d8
--- /dev/null
+++ b/migrations/20240423032933_create-projects-techs-lookup-table.up.sql
@@ -0,0 +1,5 @@
+CREATE TABLE projects_technologies (
+    project_id INTEGER NOT NULL REFERENCES projects(id),
+    technology_id INTEGER NOT NULL REFERENCES technologies(id),
+    PRIMARY KEY (project_id, technology_id) -- ensures a project-technology pair is unique
+);