Boost Azure Demo

Backend/db/migrations/003_messages.sql

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+-- +goose Up
+CREATE TABLE message_threads (
+    id BIGSERIAL PRIMARY KEY,
+    created_by_user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    subject VARCHAR(255) NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    CONSTRAINT message_threads_subject_not_blank CHECK (length(btrim(subject)) > 0)
+);
+
+CREATE TABLE message_thread_participants (
+    thread_id BIGINT NOT NULL REFERENCES message_threads(id) ON DELETE CASCADE,
+    user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    joined_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    last_read_at TIMESTAMPTZ,
+    archived_at TIMESTAMPTZ,
+    PRIMARY KEY (thread_id, user_id)
+);
+
+CREATE TABLE messages (
+    id BIGSERIAL PRIMARY KEY,
+    thread_id BIGINT NOT NULL REFERENCES message_threads(id) ON DELETE CASCADE,
+    sender_user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    body TEXT NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    CONSTRAINT messages_body_not_blank CHECK (length(btrim(body)) > 0)
+);
+
+CREATE INDEX idx_message_threads_created_by_user_id ON message_threads(created_by_user_id);
+CREATE INDEX idx_message_threads_updated_at ON message_threads(updated_at DESC);
+CREATE INDEX idx_message_thread_participants_user_id ON message_thread_participants(user_id);
+CREATE INDEX idx_messages_thread_id_created_at ON messages(thread_id, created_at DESC);
+CREATE INDEX idx_messages_sender_user_id ON messages(sender_user_id);
+
+CREATE TRIGGER message_threads_updated_at BEFORE UPDATE ON message_threads
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at();
+
+CREATE TRIGGER messages_updated_at BEFORE UPDATE ON messages
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at();
+
+-- +goose Down
+DROP TRIGGER IF EXISTS messages_updated_at ON messages;
+DROP TRIGGER IF EXISTS message_threads_updated_at ON message_threads;
+
+DROP TABLE IF EXISTS messages;
+DROP TABLE IF EXISTS message_thread_participants;
+DROP TABLE IF EXISTS message_threads;