Initial open source release

deploy/migrations/0050_channel_message_reactions.up.sql

@@ -0,0 +1,38 @@
+CREATE TABLE IF NOT EXISTS channel_message_reactions (
+    channel_id      BIGINT      NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
+    message_id      INT         NOT NULL,
+    reacted_user_id BIGINT      NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    sender_user_id  BIGINT      NOT NULL REFERENCES users(id) ON DELETE RESTRICT,
+    reaction_type   VARCHAR(16) NOT NULL,
+    reaction_value  TEXT        NOT NULL,
+    big             BOOLEAN     NOT NULL DEFAULT false,
+    unread          BOOLEAN     NOT NULL DEFAULT false,
+    chosen_order    INT         NOT NULL DEFAULT 1,
+    reaction_date   INT         NOT NULL,
+    created_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY (channel_id, message_id, reacted_user_id, reaction_type, reaction_value),
+    FOREIGN KEY (channel_id, message_id) REFERENCES channel_messages(channel_id, id) ON DELETE CASCADE,
+    CONSTRAINT channel_message_reactions_type_check CHECK (reaction_type IN ('emoji')),
+    CONSTRAINT channel_message_reactions_value_check CHECK (reaction_value <> ''),
+    CONSTRAINT channel_message_reactions_order_check CHECK (chosen_order > 0)
+) PARTITION BY HASH (channel_id);
+
+CREATE INDEX IF NOT EXISTS channel_message_reactions_msg_date_idx
+    ON channel_message_reactions (channel_id, message_id, reaction_date DESC, reacted_user_id DESC, reaction_value ASC);
+
+CREATE INDEX IF NOT EXISTS channel_message_reactions_value_date_idx
+    ON channel_message_reactions (channel_id, message_id, reaction_type, reaction_value, reaction_date DESC, reacted_user_id DESC);
+
+DO $$
+DECLARE
+    i int;
+BEGIN
+    FOR i IN 0..63 LOOP
+        EXECUTE format(
+            'CREATE TABLE IF NOT EXISTS channel_message_reactions_p%s PARTITION OF channel_message_reactions FOR VALUES WITH (MODULUS 64, REMAINDER %s)',
+            lpad(i::text, 2, '0'),
+            i
+        );
+    END LOOP;
+END $$;