-- AlterTable
ALTER TABLE `Contract` ADD COLUMN `providerId` INTEGER NULL,
    ADD COLUMN `tariffId` INTEGER NULL;

-- CreateTable
CREATE TABLE `Provider` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `name` VARCHAR(191) NOT NULL,
    `portalUrl` VARCHAR(191) NULL,
    `usernameFieldName` VARCHAR(191) NULL,
    `passwordFieldName` VARCHAR(191) NULL,
    `isActive` BOOLEAN NOT NULL DEFAULT true,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updatedAt` DATETIME(3) NOT NULL,

    UNIQUE INDEX `Provider_name_key`(`name`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- CreateTable
CREATE TABLE `Tariff` (
    `id` INTEGER NOT NULL AUTO_INCREMENT,
    `providerId` INTEGER NOT NULL,
    `name` VARCHAR(191) NOT NULL,
    `isActive` BOOLEAN NOT NULL DEFAULT true,
    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    `updatedAt` DATETIME(3) NOT NULL,

    UNIQUE INDEX `Tariff_providerId_name_key`(`providerId`, `name`),
    PRIMARY KEY (`id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- AddForeignKey
ALTER TABLE `Tariff` ADD CONSTRAINT `Tariff_providerId_fkey` FOREIGN KEY (`providerId`) REFERENCES `Provider`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `Contract` ADD CONSTRAINT `Contract_providerId_fkey` FOREIGN KEY (`providerId`) REFERENCES `Provider`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE `Contract` ADD CONSTRAINT `Contract_tariffId_fkey` FOREIGN KEY (`tariffId`) REFERENCES `Tariff`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;