init

ticktalk/crates/db/migrations/00000000000000_diesel_initial_setup/down.sql

@@ -0,0 +1,6 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+DROP FUNCTION IF EXISTS diesel_manage_updated_at(_tbl regclass);
+DROP FUNCTION IF EXISTS diesel_set_updated_at();

ticktalk/crates/db/migrations/00000000000000_diesel_initial_setup/up.sql

@@ -0,0 +1,36 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+
+
+
+-- Sets up a trigger for the given table to automatically set a column called
+-- `updated_at` whenever the row is modified (unless `updated_at` was included
+-- in the modified columns)
+--
+-- # Example
+--
+-- ```sql
+-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
+--
+-- SELECT diesel_manage_updated_at('users');
+-- ```
+CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
+BEGIN
+    EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
+                    FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
+BEGIN
+    IF (
+        NEW IS DISTINCT FROM OLD AND
+        NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
+    ) THEN
+        NEW.updated_at := current_timestamp;
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;

ticktalk/crates/db/migrations/2025-12-10-190915-0000_setup_db/down.sql

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+DROP TABLE IF EXISTS messages;
+DROP TABLE IF EXISTS chats;
+DROP TABLE IF EXISTS users;

ticktalk/crates/db/migrations/2025-12-10-190915-0000_setup_db/up.sql

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+CREATE TABLE IF NOT EXISTS users (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    username VARCHAR(100) UNIQUE NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS chats (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    first_user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    second_user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    UNIQUE(first_user_id, second_user_id),
+    CHECK (first_user_id != second_user_id)
+);
+
+CREATE TABLE IF NOT EXISTS messages (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    sender_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    recipient_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    chat_id UUID NOT NULL REFERENCES chats(id) ON DELETE CASCADE,
+    content TEXT NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+
+CREATE INDEX IF NOT EXISTS idx_messages_chat_id ON messages(chat_id);
+CREATE INDEX IF NOT EXISTS idx_messages_sender_id ON messages(sender_id);
+CREATE INDEX IF NOT EXISTS idx_messages_chat_created ON messages(chat_id, created_at);