ALTER TABLE "instructor_platforms"
ADD COLUMN "control_duration_minutes" INTEGER NOT NULL DEFAULT 30,
ADD COLUMN "control_warning_minutes" INTEGER NOT NULL DEFAULT 5;

CREATE TABLE "platform_control_sessions" (
  "id" UUID NOT NULL DEFAULT gen_random_uuid(),
  "organization_id" UUID,
  "organization_name" TEXT NOT NULL,
  "platform_id" UUID,
  "instructor_platform_id" UUID,
  "holder_user_id" UUID NOT NULL,
  "group_id" UUID,
  "status" TEXT NOT NULL DEFAULT 'ACTIVE',
  "started_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "ends_at" TIMESTAMPTZ(3) NOT NULL,
  "warning_at" TIMESTAMPTZ(3) NOT NULL,
  "warning_sent_at" TIMESTAMPTZ(3),
  "released_at" TIMESTAMPTZ(3),
  "end_reason" TEXT,
  "created_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "updated_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

  CONSTRAINT "platform_control_sessions_pkey" PRIMARY KEY ("id"),
  CONSTRAINT "platform_control_sessions_platform_id_fkey" FOREIGN KEY ("platform_id") REFERENCES "platforms"("id") ON DELETE RESTRICT ON UPDATE CASCADE,
  CONSTRAINT "platform_control_sessions_instructor_platform_id_fkey" FOREIGN KEY ("instructor_platform_id") REFERENCES "instructor_platforms"("id") ON DELETE RESTRICT ON UPDATE CASCADE,
  CONSTRAINT "platform_control_sessions_holder_user_id_fkey" FOREIGN KEY ("holder_user_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT "platform_control_sessions_group_id_fkey" FOREIGN KEY ("group_id") REFERENCES "student_groups"("id") ON DELETE SET NULL ON UPDATE CASCADE
);

CREATE TABLE "platform_control_queue_entries" (
  "id" UUID NOT NULL DEFAULT gen_random_uuid(),
  "organization_id" UUID,
  "organization_name" TEXT NOT NULL,
  "platform_id" UUID,
  "instructor_platform_id" UUID,
  "user_id" UUID NOT NULL,
  "group_id" UUID,
  "status" TEXT NOT NULL DEFAULT 'WAITING',
  "requested_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "granted_at" TIMESTAMPTZ(3),
  "canceled_at" TIMESTAMPTZ(3),
  "created_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
  "updated_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

  CONSTRAINT "platform_control_queue_entries_pkey" PRIMARY KEY ("id"),
  CONSTRAINT "platform_control_queue_entries_platform_id_fkey" FOREIGN KEY ("platform_id") REFERENCES "platforms"("id") ON DELETE RESTRICT ON UPDATE CASCADE,
  CONSTRAINT "platform_control_queue_entries_instructor_platform_id_fkey" FOREIGN KEY ("instructor_platform_id") REFERENCES "instructor_platforms"("id") ON DELETE RESTRICT ON UPDATE CASCADE,
  CONSTRAINT "platform_control_queue_entries_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT "platform_control_queue_entries_group_id_fkey" FOREIGN KEY ("group_id") REFERENCES "student_groups"("id") ON DELETE SET NULL ON UPDATE CASCADE
);

CREATE INDEX "platform_control_sessions_organization_id_idx" ON "platform_control_sessions"("organization_id");
CREATE INDEX "platform_control_sessions_organization_name_idx" ON "platform_control_sessions"("organization_name");
CREATE INDEX "platform_control_sessions_platform_id_status_idx" ON "platform_control_sessions"("platform_id", "status");
CREATE INDEX "platform_control_sessions_instructor_platform_id_status_idx" ON "platform_control_sessions"("instructor_platform_id", "status");
CREATE INDEX "platform_control_sessions_holder_user_id_status_idx" ON "platform_control_sessions"("holder_user_id", "status");
CREATE INDEX "platform_control_sessions_ends_at_status_idx" ON "platform_control_sessions"("ends_at", "status");

CREATE INDEX "platform_control_queue_entries_organization_id_idx" ON "platform_control_queue_entries"("organization_id");
CREATE INDEX "platform_control_queue_entries_organization_name_idx" ON "platform_control_queue_entries"("organization_name");
CREATE INDEX "platform_control_queue_entries_platform_id_status_requested_at_idx" ON "platform_control_queue_entries"("platform_id", "status", "requested_at");
CREATE INDEX "platform_control_queue_entries_instructor_platform_id_status_requested_at_idx" ON "platform_control_queue_entries"("instructor_platform_id", "status", "requested_at");
CREATE INDEX "platform_control_queue_entries_user_id_status_idx" ON "platform_control_queue_entries"("user_id", "status");