-- CreateEnum
CREATE TYPE "NotificationType" AS ENUM ('SYSTEM', 'ACTIVITY', 'REWARD', 'UPGRADE', 'ANNOUNCEMENT');

-- CreateEnum
CREATE TYPE "NotificationPriority" AS ENUM ('LOW', 'NORMAL', 'HIGH', 'URGENT');

-- CreateEnum
CREATE TYPE "TargetType" AS ENUM ('ALL', 'SPECIFIC');

-- CreateTable
CREATE TABLE "notifications" (
    "id" TEXT NOT NULL,
    "title" TEXT NOT NULL,
    "content" TEXT NOT NULL,
    "type" "NotificationType" NOT NULL DEFAULT 'SYSTEM',
    "priority" "NotificationPriority" NOT NULL DEFAULT 'NORMAL',
    "target_type" "TargetType" NOT NULL DEFAULT 'ALL',
    "image_url" TEXT,
    "link_url" TEXT,
    "is_enabled" BOOLEAN NOT NULL DEFAULT true,
    "requires_force_read" BOOLEAN NOT NULL DEFAULT false,
    "published_at" TIMESTAMP(3),
    "expires_at" TIMESTAMP(3),
    "created_by" TEXT NOT NULL DEFAULT 'admin',
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "notifications_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "notification_reads" (
    "id" TEXT NOT NULL,
    "notification_id" TEXT NOT NULL,
    "user_serial_num" TEXT NOT NULL,
    "read_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "notification_reads_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "notification_user_targets" (
    "id" TEXT NOT NULL,
    "notification_id" TEXT NOT NULL,
    "account_sequence" TEXT NOT NULL,

    CONSTRAINT "notification_user_targets_pkey" PRIMARY KEY ("id")
);

-- CreateIndex
CREATE INDEX "notifications_is_enabled_published_at_idx" ON "notifications"("is_enabled", "published_at");

-- CreateIndex
CREATE INDEX "notifications_type_idx" ON "notifications"("type");

-- CreateIndex
CREATE UNIQUE INDEX "notification_reads_notification_id_user_serial_num_key" ON "notification_reads"("notification_id", "user_serial_num");

-- CreateIndex
CREATE INDEX "notification_reads_user_serial_num_idx" ON "notification_reads"("user_serial_num");

-- CreateIndex
CREATE UNIQUE INDEX "notification_user_targets_notification_id_account_sequence_key" ON "notification_user_targets"("notification_id", "account_sequence");