feat: sql, migrations, sql postgress db setup, movie model

projects/greenlight/migrations/000001_create_movie_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS movies;

projects/greenlight/migrations/000001_create_movie_table.up.sql

@@ -0,0 +1,10 @@
+CREATE TABLE IF NOT EXISTS movies (
+    id bigserial PRIMARY KEY,  
+    created_at timestamp(0) with time zone NOT NULL DEFAULT NOW(),
+    title text NOT NULL,
+    year integer NOT NULL,
+    runtime integer NOT NULL,
+    genres text[] NOT NULL,
+    version integer NOT NULL DEFAULT 1
+);
+

projects/greenlight/migrations/000002_add_movies_check_constraints.down.sql

@@ -0,0 +1,5 @@
+ALTER TABLE movies DROP CONSTRAINT IF EXISTS movies_runtime_check;
+
+ALTER TABLE movies DROP CONSTRAINT IF EXISTS movies_year_check;
+
+ALTER TABLE movies DROP CONSTRAINT IF EXISTS genres_length_check;

projects/greenlight/migrations/000002_add_movies_check_constraints.up.sql

@@ -0,0 +1,6 @@
+ALTER TABLE movies ADD CONSTRAINT movies_runtime_check CHECK (runtime >= 0);
+
+ALTER TABLE movies ADD CONSTRAINT movies_year_check CHECK (year BETWEEN 1888 AND date_part('year', now()));
+
+ALTER TABLE movies ADD CONSTRAINT genres_length_check CHECK (array_length(genres, 1) BETWEEN 1 AND 5);
+