CREATE TABLE "chat_channel_members" (
	"workspace_id" uuid NOT NULL,
	"channel_id" uuid NOT NULL,
	"user_id" uuid NOT NULL,
	"joined_at" timestamp with time zone DEFAULT now() NOT NULL,
	CONSTRAINT "chat_channel_members_workspace_id_channel_id_user_id_pk" PRIMARY KEY("workspace_id","channel_id","user_id")
);
--> statement-breakpoint
CREATE TABLE "chat_channels" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"workspace_id" uuid NOT NULL,
	"kind" varchar(16) NOT NULL,
	"name" varchar(200),
	"owner_user_id" uuid NOT NULL,
	"direct_key" text,
	"next_sequence" bigint DEFAULT 1 NOT NULL,
	"archived_at" timestamp with time zone,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
	CONSTRAINT "chat_channels_workspace_id_id_unique" UNIQUE("workspace_id","id"),
	CONSTRAINT "chat_channels_kind_check" CHECK ("chat_channels"."kind" in ('public', 'private', 'direct')),
	CONSTRAINT "chat_channels_direct_key_check" CHECK (("chat_channels"."kind" = 'direct' and "chat_channels"."direct_key" is not null and "chat_channels"."name" is null) or ("chat_channels"."kind" <> 'direct' and "chat_channels"."direct_key" is null)),
	CONSTRAINT "chat_channels_next_sequence_check" CHECK ("chat_channels"."next_sequence" > 0)
);
--> statement-breakpoint
CREATE TABLE "chat_message_mentions" (
	"workspace_id" uuid NOT NULL,
	"message_id" uuid NOT NULL,
	"user_id" uuid NOT NULL,
	CONSTRAINT "chat_message_mentions_workspace_id_message_id_user_id_pk" PRIMARY KEY("workspace_id","message_id","user_id")
);
--> statement-breakpoint
CREATE TABLE "chat_messages" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"workspace_id" uuid NOT NULL,
	"channel_id" uuid NOT NULL,
	"sequence" bigint NOT NULL,
	"parent_message_id" uuid,
	"author_type" varchar(16) NOT NULL,
	"author_user_id" uuid,
	"author_agent_id" uuid,
	"body" text NOT NULL,
	"status" varchar(16) DEFAULT 'sent' NOT NULL,
	"client_idempotency_key" varchar(200) NOT NULL,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
	"edited_at" timestamp with time zone,
	"deleted_at" timestamp with time zone,
	CONSTRAINT "chat_messages_workspace_id_id_unique" UNIQUE("workspace_id","id"),
	CONSTRAINT "chat_messages_workspace_channel_id_unique" UNIQUE("workspace_id","channel_id","id"),
	CONSTRAINT "chat_messages_workspace_channel_sequence_unique" UNIQUE("workspace_id","channel_id","sequence"),
	CONSTRAINT "chat_messages_workspace_channel_client_key_unique" UNIQUE("workspace_id","channel_id","client_idempotency_key"),
	CONSTRAINT "chat_messages_author_check" CHECK (("chat_messages"."author_type" = 'human' and "chat_messages"."author_user_id" is not null and "chat_messages"."author_agent_id" is null) or ("chat_messages"."author_type" = 'agent' and "chat_messages"."author_user_id" is null and "chat_messages"."author_agent_id" is not null) or ("chat_messages"."author_type" = 'system' and "chat_messages"."author_user_id" is null and "chat_messages"."author_agent_id" is null)),
	CONSTRAINT "chat_messages_status_check" CHECK ("chat_messages"."status" in ('sent', 'edited', 'deleted')),
	CONSTRAINT "chat_messages_sequence_check" CHECK ("chat_messages"."sequence" >= 0)
);
--> statement-breakpoint
CREATE TABLE "chat_outbox" (
	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
	"workspace_id" uuid NOT NULL,
	"message_id" uuid NOT NULL,
	"event_version" integer DEFAULT 1 NOT NULL,
	"event_type" varchar(100) NOT NULL,
	"dedupe_key" varchar(250) NOT NULL,
	"payload" jsonb NOT NULL,
	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
	"published_at" timestamp with time zone,
	"attempts" integer DEFAULT 0 NOT NULL,
	"last_error" text,
	CONSTRAINT "chat_outbox_workspace_id_dedupe_key_unique" UNIQUE("workspace_id","dedupe_key"),
	CONSTRAINT "chat_outbox_event_version_check" CHECK ("chat_outbox"."event_version" > 0),
	CONSTRAINT "chat_outbox_attempts_check" CHECK ("chat_outbox"."attempts" >= 0)
);
--> statement-breakpoint
CREATE TABLE "chat_read_cursors" (
	"workspace_id" uuid NOT NULL,
	"channel_id" uuid NOT NULL,
	"user_id" uuid NOT NULL,
	"sequence" bigint DEFAULT 0 NOT NULL,
	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
	CONSTRAINT "chat_read_cursors_workspace_id_channel_id_user_id_pk" PRIMARY KEY("workspace_id","channel_id","user_id"),
	CONSTRAINT "chat_read_cursors_sequence_check" CHECK ("chat_read_cursors"."sequence" >= 0)
);
--> statement-breakpoint
ALTER TABLE "chat_channel_members" ADD CONSTRAINT "chat_channel_members_workspace_id_workspaces_id_fk" FOREIGN KEY ("workspace_id") REFERENCES "public"."workspaces"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_channel_members" ADD CONSTRAINT "chat_channel_members_channel_fk" FOREIGN KEY ("workspace_id","channel_id") REFERENCES "public"."chat_channels"("workspace_id","id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_channel_members" ADD CONSTRAINT "chat_channel_members_workspace_member_fk" FOREIGN KEY ("workspace_id","user_id") REFERENCES "public"."workspace_members"("workspace_id","user_id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_channels" ADD CONSTRAINT "chat_channels_workspace_id_workspaces_id_fk" FOREIGN KEY ("workspace_id") REFERENCES "public"."workspaces"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_channels" ADD CONSTRAINT "chat_channels_owner_member_fk" FOREIGN KEY ("workspace_id","owner_user_id") REFERENCES "public"."workspace_members"("workspace_id","user_id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_message_mentions" ADD CONSTRAINT "chat_message_mentions_workspace_id_workspaces_id_fk" FOREIGN KEY ("workspace_id") REFERENCES "public"."workspaces"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_message_mentions" ADD CONSTRAINT "chat_message_mentions_message_fk" FOREIGN KEY ("workspace_id","message_id") REFERENCES "public"."chat_messages"("workspace_id","id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_message_mentions" ADD CONSTRAINT "chat_message_mentions_workspace_member_fk" FOREIGN KEY ("workspace_id","user_id") REFERENCES "public"."workspace_members"("workspace_id","user_id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_messages" ADD CONSTRAINT "chat_messages_workspace_id_workspaces_id_fk" FOREIGN KEY ("workspace_id") REFERENCES "public"."workspaces"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_messages" ADD CONSTRAINT "chat_messages_channel_fk" FOREIGN KEY ("workspace_id","channel_id") REFERENCES "public"."chat_channels"("workspace_id","id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_messages" ADD CONSTRAINT "chat_messages_parent_fk" FOREIGN KEY ("workspace_id","channel_id","parent_message_id") REFERENCES "public"."chat_messages"("workspace_id","channel_id","id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_messages" ADD CONSTRAINT "chat_messages_human_author_member_fk" FOREIGN KEY ("workspace_id","author_user_id") REFERENCES "public"."workspace_members"("workspace_id","user_id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_outbox" ADD CONSTRAINT "chat_outbox_workspace_id_workspaces_id_fk" FOREIGN KEY ("workspace_id") REFERENCES "public"."workspaces"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_outbox" ADD CONSTRAINT "chat_outbox_message_fk" FOREIGN KEY ("workspace_id","message_id") REFERENCES "public"."chat_messages"("workspace_id","id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_read_cursors" ADD CONSTRAINT "chat_read_cursors_workspace_id_workspaces_id_fk" FOREIGN KEY ("workspace_id") REFERENCES "public"."workspaces"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_read_cursors" ADD CONSTRAINT "chat_read_cursors_channel_fk" FOREIGN KEY ("workspace_id","channel_id") REFERENCES "public"."chat_channels"("workspace_id","id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE "chat_read_cursors" ADD CONSTRAINT "chat_read_cursors_workspace_member_fk" FOREIGN KEY ("workspace_id","user_id") REFERENCES "public"."workspace_members"("workspace_id","user_id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
CREATE INDEX "chat_channel_members_workspace_id_idx" ON "chat_channel_members" USING btree ("workspace_id");--> statement-breakpoint
CREATE INDEX "chat_channel_members_workspace_id_user_id_idx" ON "chat_channel_members" USING btree ("workspace_id","user_id");--> statement-breakpoint
CREATE INDEX "chat_channels_workspace_id_idx" ON "chat_channels" USING btree ("workspace_id");--> statement-breakpoint
CREATE UNIQUE INDEX "chat_channels_workspace_id_direct_key_unique" ON "chat_channels" USING btree ("workspace_id","direct_key") WHERE "chat_channels"."direct_key" is not null;--> statement-breakpoint
CREATE INDEX "chat_message_mentions_workspace_id_idx" ON "chat_message_mentions" USING btree ("workspace_id");--> statement-breakpoint
CREATE INDEX "chat_messages_workspace_id_idx" ON "chat_messages" USING btree ("workspace_id");--> statement-breakpoint
CREATE INDEX "chat_outbox_workspace_id_idx" ON "chat_outbox" USING btree ("workspace_id");--> statement-breakpoint
CREATE INDEX "chat_outbox_unpublished_idx" ON "chat_outbox" USING btree ("created_at") WHERE "chat_outbox"."published_at" is null;--> statement-breakpoint
CREATE INDEX "chat_read_cursors_workspace_id_idx" ON "chat_read_cursors" USING btree ("workspace_id");