From 91b057b0fbd9054e6c62d053eff31483cf4aec9f Mon Sep 17 00:00:00 2001
From: Alex Kotov <kotovalexarian@gmail.com>
Date: Wed, 25 Jan 2023 19:29:41 +0400
Subject: [PATCH] Add languages

---
 20230125152306_languages.down.sql |  3 +++
 20230125152306_languages.up.sql   | 23 +++++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 20230125152306_languages.down.sql
 create mode 100644 20230125152306_languages.up.sql

diff --git a/20230125152306_languages.down.sql b/20230125152306_languages.down.sql
new file mode 100644
index 0000000..4d36f7f
--- /dev/null
+++ b/20230125152306_languages.down.sql
@@ -0,0 +1,3 @@
+BEGIN;
+DROP TABLE languages;
+COMMIT;
diff --git a/20230125152306_languages.up.sql b/20230125152306_languages.up.sql
new file mode 100644
index 0000000..a3cbab7
--- /dev/null
+++ b/20230125152306_languages.up.sql
@@ -0,0 +1,23 @@
+BEGIN;
+
+CREATE TABLE languages (
+    id BIGSERIAL PRIMARY KEY,
+    code VARCHAR(2) NOT NULL,
+    english_name VARCHAR NOT NULL,
+    self_name VARCHAR NOT NULL,
+    CONSTRAINT code_is_language_code CHECK (is_language_code(code)),
+    CONSTRAINT english_name_is_name CHECK (is_name(english_name)),
+    CONSTRAINT self_name_is_name CHECK (is_name(self_name))
+);
+
+CREATE UNIQUE INDEX languages_code ON languages (code);
+CREATE UNIQUE INDEX languages_english_name ON languages (english_name);
+
+INSERT INTO languages (code, english_name, self_name) VALUES
+    ('en', 'English',  'English'),
+    ('ru', 'Russian',  'Русский'),
+    ('pl', 'Polish',   'Polski'),
+    ('es', 'Spanish',  'Español'),
+    ('ka', 'Georgian', 'ქართული');
+
+COMMIT;