-- CreateTable: 用户直授权限表（不依赖角色，单独给用户授予权限，如 ops:user-ops）
CREATE TABLE "platform_schema"."user_permissions" (
    "id" SERIAL NOT NULL,
    "user_id" TEXT NOT NULL,
    "permission_id" INTEGER NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateIndex
CREATE INDEX "user_permissions_user_id_idx" ON "platform_schema"."user_permissions"("user_id");

-- CreateIndex: 唯一约束，同一用户不重复授同一权限
CREATE UNIQUE INDEX "user_permissions_user_id_permission_id_key" ON "platform_schema"."user_permissions"("user_id", "permission_id");

-- AddForeignKey
ALTER TABLE "platform_schema"."user_permissions" ADD CONSTRAINT "user_permissions_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "platform_schema"."users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "platform_schema"."user_permissions" ADD CONSTRAINT "user_permissions_permission_id_fkey" FOREIGN KEY ("permission_id") REFERENCES "platform_schema"."permissions"("id") ON DELETE CASCADE ON UPDATE CASCADE;