-- CreateTable
CREATE TABLE "users" (
    "id" TEXT NOT NULL,
    "email" TEXT NOT NULL,
    "password_hash" TEXT NOT NULL,
    "currency" TEXT NOT NULL DEFAULT 'USD',
    "balance_cents" BIGINT NOT NULL DEFAULT 0,
    "status" TEXT NOT NULL DEFAULT 'active',
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

-- CreateTable
CREATE TABLE "api_keys" (
    "id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "name" TEXT NOT NULL,
    "key_hash" TEXT NOT NULL,
    "prefix" TEXT NOT NULL,
    "last_used_at" TIMESTAMP(3),
    "status" TEXT NOT NULL DEFAULT 'active',
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

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

-- CreateTable
CREATE TABLE "balance_transactions" (
    "id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "amount_cents" BIGINT NOT NULL,
    "type" TEXT NOT NULL,
    "ref_id" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateTable
CREATE TABLE "usage_records" (
    "id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "api_key_id" TEXT NOT NULL,
    "model" TEXT NOT NULL,
    "prompt_tokens" INTEGER NOT NULL,
    "completion_tokens" INTEGER NOT NULL,
    "cost_cents" INTEGER NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateTable
CREATE TABLE "orders" (
    "id" TEXT NOT NULL,
    "user_id" TEXT NOT NULL,
    "provider" TEXT NOT NULL,
    "provider_order_id" TEXT,
    "amount_cents" BIGINT NOT NULL,
    "status" TEXT NOT NULL DEFAULT 'pending',
    "currency" TEXT NOT NULL DEFAULT 'USD',
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

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

-- CreateIndex
CREATE UNIQUE INDEX "users_email_key" ON "users"("email");

-- CreateIndex
CREATE UNIQUE INDEX "api_keys_key_hash_key" ON "api_keys"("key_hash");

-- AddForeignKey
ALTER TABLE "api_keys" ADD CONSTRAINT "api_keys_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "balance_transactions" ADD CONSTRAINT "balance_transactions_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "usage_records" ADD CONSTRAINT "usage_records_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "usage_records" ADD CONSTRAINT "usage_records_api_key_id_fkey" FOREIGN KEY ("api_key_id") REFERENCES "api_keys"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "orders" ADD CONSTRAINT "orders_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE RESTRICT ON UPDATE CASCADE;